ECD T90 Instruction Manual

INSTRUCTION MANUAL

MODEL T80 UNIVERSAL TRANSMITTER

T80 IM Rev. L

Screen Map

CAL
(Calibration)

Auto
Cal 1 (Offset) using Calibration Solution

Cal 2 (Slope) using Calibration Solution

Standardize

Enter Grab Sample Determined Value

Manual
Enter Offset, the PV value and associated mV

Enter Slope, mV/pH, mV/decade, mV/ppm…

Temp

Enter measured Temperature

CONFIG
(Configuration)

XMTR

LCD

Set Up

Temp. Format

°C or °F

Contrast

Adj. 0-100%

Back Light

Enter ON time

Range Lock

Choose: Auto, ppb, ppm, ppT

Graph
Line

Screen Duration

Gauge

Bar

Label

TAG ID

Enter Name

TAG

ON/OFF

POP UP

ON/OFF

SENSOR

Enter Name

Output

4-20 mA
(1 or 2)

Range (PV or
Temp.)

4 mA =

20 mA =

Cal (more)
Trim 4.00 mA

Trim 20.00 mA

Fault (more)

3.5 mA

22 mA

NONE

RELAY

Relay 1
Alarm

Set Point

Timed

Period, Duration

Fault

Relay 2
Alarm

Set Point

Timed

Period, Duration

Fault

Relay 3
Alarm

Set Point

Timed

Period, Duration

Fault

HOLD

Time out: None, 15 min, 30 min…

Serial
Address

Baud rate

Format

Password

Menu

Off/On “ _ _ _ _ “

CAL

Off/On “ _ _ _ _ “

CNFG

Off/On “ _ _ _ _ “

SIM

Off/On “ _ _ _ _ “

Sensor
Sensor 1 or 2
Type

Choose Type: pH, Cond, ORP…..

T COMP

Enter % Comp

ISO PT

Enter mV value

Qty of Sensors

Choose 1 sensor or 2 sensors

COMP

Dissociation, Interference, Percentage, OFF

Load Default

Sensor/Transmitter

Yes/No

DAMP

Enter Signal Dampening (# of readings to average, 0-100)

INFO
(Information)

XMTR

Configuration, Serial #, Name, Outputs

Sensor

Calibration logs, Serial #, Name

SIM
(Simulate)

System

Sensor 1 or 2
Fixed value

Ramp

Relays
#1 ON/OFF

#2 ON/OFF

#3 ON/OFF

4-20 mA
4-20 mA Ch 1

Enter Value

4-20 mA Ch 2

Enter Value

Page 1 Model T80

PREFACE

Thank you for purchasing products from Electro-Chemical Devices, Inc. ECD provides you with the finest liquid
analytical instrumentation available. If this is your first purchase from ECD, please read the entire manual before
installing and commissioning your new equipment.

Manuals are accessible on the ECD website at http://www.ecdi.com/literature/manuals.html .

If there are any questions concerning this equipment, please contact your local ECD representative, or the
factory directly at:

Electro-Chemical Devices, Inc.

1500 Kellogg Dr.

Anaheim, CA 92807 USA

Telephone: [phone]

FAX: [phone]

Website: www.ecdi.com

Email: [e-mail]

2

SYMBOLS USED IN MANUAL

This symbol is used to designate important information, warnings and cautions. Failure to follow
this information could lead to harm to the instrument or user.

No operator serviceable parts, service by authorized service personnel only.

This symbol is used to designate a WARNING “Risk of Electrical Shock”

Disconnect supply before servicing
Equipment protected throughout by double insulation.

Read the complete manual before installing or using the equipment.

Contents of this manual are believed to be correct at the time of printing and are subject to change without
notice. ECD is not responsible for damage to the instrument, poor performance of the instrument or losses
resulting from such, if the problems are caused by:

• Incorrect operation by the user.

• Use of the instrument in incorrect applications.

• Use of the instrument in an inappropriate environment or incorrect utility program (power supply).

• Repair or modification of the related instrument by anyone not authorized by ECD.

• There are no operator accessible parts. Service and maintenance to be done by authorized personnel only.

• If the equipment is used in a manner not specified by the manufacturer, the protection provided by the

equipment may be impaired.

© 2016 Electro-Chemical Devices, Inc. All rights reserved. No part of this manual may be used or reproduced in
any form or by any means, or stored in a database or retrieval system without prior written permission from
Electro-Chemical Devices, Inc. Making copies of any part of this manual for any purpose other than personal use
is a violation of United States copyright laws. Document printed in the United States of America.

Page 3 Model T80

Table of Contents

TERMS AND CONDITIONS OF SALE .............................................................................................................................9

RETURN GOODS POLICY .......................................................................................................................................... 10

UNPACKING THE INSTRUMENT ............................................................................................................................... 11

INSTRUCTION MANUAL REVISION ........................................................................................................................... 11

1.0 GENERAL DESCRIPTION ..................................................................................................................................... 12

1.1 FEATURES ...................................................................................................................................................... 12

1.2 SPECIFICATIONS ............................................................................................................................................. 12

1.2.1 Input specification .................................................................................................................................. 12

1.2.2 Input Ranges ........................................................................................................................................... 12

1.2.3 Accuracy ................................................................................................................................................. 12

1.2.4 Output Signals ........................................................................................................................................ 13

1.2.5 Contact Relays ........................................................................................................................................ 13

1.2.6 Display .................................................................................................................................................... 13

1.2.7 Enclosure ................................................................................................................................................ 13

1.2.8 Power ...................................................................................................................................................... 13

1.2.9 Environmental Conditions ...................................................................................................................... 13

1.2.10 Shipping ................................................................................................................................................ 13

1.3 Model Codes .................................................................................................................................................. 14

2.0 INSTALLATION.................................................................................................................................................... 15

2.1 MOUNTING .................................................................................................................................................... 15

2.2 WIRING .......................................................................................................................................................... 16

2.2.1 Wiring, power ......................................................................................................................................... 18

2.2.2 Wiring, Sensor ........................................................................................................................................ 19

2.2.3 Wiring, 4-20 mA Outputs ........................................................................................................................ 19

2.2.4 Wiring, Contact Relay Outputs ............................................................................................................... 20

2.2.5 Wiring, Serial Output MODBUS RTU ...................................................................................................... 20

3.0 OPERATION ........................................................................................................................................................ 21

3.1 KEYS ............................................................................................................................................................... 21

3.1.1 Home/Exit Key ........................................................................................................................................ 21

3.1.2 Back/Hold Key ......................................................................................................................................... 21

3.1.3 Selection Adjustment Keys ..................................................................................................................... 22

4

3.1.4 Alpha Numeric Entry............................................................................................................................... 22

3.2 MENU STRUCTURE ........................................................................................................................................ 22

3.2.1 HOLD (Output Hold) ............................................................................................................................... 22

3.2.2 CAL (Calibration Menu) .......................................................................................................................... 22

3.2.3 CONFIG (Configuration Menu) ............................................................................................................... 23

3.2.4 INFO (Information Menu) ....................................................................................................................... 25

3.2.5 SIM (Simulation Menu) ........................................................................................................................... 25

3.2.6 Fault Screens........................................................................................................................................... 25

3.2.7 SENTINEL® Screens ................................................................................................................................. 26

3.3 START UP GUIDE ............................................................................................................................................ 27

3.3.1 Configure 4-20 mA output range ............................................................................................................ 27

3.3.2 Configure 4-20 mA Fault Condition and Cal ........................................................................................... 27

3.3.3 Configure Alarm Relays (Relays Optional) .............................................................................................. 27

3.3.4 Exit Menus and Return to Main Display ................................................................................................. 28

3.3.5 Sensor Start Up ....................................................................................................................................... 28

3.4 USER SELECTABLE OPTIONS .......................................................................................................................... 29

3.4.1 Screen Lighting ....................................................................................................................................... 29

3.4.3 Graphical display .................................................................................................................................... 29

3.4.4 TAG Transmitter Name ........................................................................................................................... 29

3.4.5 SENSOR Name ........................................................................................................................................ 30

3.4.6 Password Protection ............................................................................................................................... 30

4.0 CALIBRATION ..................................................................................................................................................... 31

4.0.1 AUTO Calibration description ................................................................................................................. 31

4.0.2 STANDardize Calibration description ..................................................................................................... 31

4.0.3 MANUAL Calibration description............................................................................................................ 31

4.1 pH Calibration Procedures ............................................................................................................................. 33

4.1.1 AUTO Cal using pH 4.01, 7.00, 10.00 buffers ......................................................................................... 33

4.1.2 AUTO Cal using other pH buffers............................................................................................................ 33

4.1.3 Standardize ............................................................................................................................................. 33

4.2 ORP Calibration Procedures .......................................................................................................................... 34

4.2.1 Auto Cal with Quinhydrone .................................................................................................................... 34

4.1.2 Standardize ............................................................................................................................................. 34

4.3 pION Calibration Procedures ......................................................................................................................... 35

Page 5 Model T80

4.3.1 AUTO Cal using 1, 10, 100 ppm solutions ............................................................................................... 35

4.3.2 AUTO Cal using non-decimal ppm solutions .......................................................................................... 35

4.3.3 Standardize ............................................................................................................................................. 35

4.4 S80/DO90 DISSOLVED OXYGEN Calibration Procedures ............................................................................... 36

4.4.1 AUTO Cal using zero ppm solution and Air............................................................................................. 37

4.4.2 Standardize ............................................................................................................................................. 38

4.4.3 Manual Cal .............................................................................................................................................. 38

4.5 TRITON® Dissolved Oxygen Calibration Procedures ...................................................................................... 39

4.5.1 AUTO Cal using zero ppm solution and Air............................................................................................. 39

4.5.2 Standardize ............................................................................................................................................. 40

4.6 TRITON® TR6 Turbidity/Suspended Solids Sensor ......................................................................................... 40

4.6.1 AUTO Cal ................................................................................................................................................. 41

4.6.2 Standardize ............................................................................................................................................. 41

4.6.3 MANUAL Cal ........................................................................................................................................... 42

4.7 Conductivity Sensors ..................................................................................................................................... 42

4.7.1 AUTO Cal using Air and Conductivity Standard ...................................................................................... 42

4.7.2 Standardize ............................................................................................................................................. 43

4.8 TDS Conductivity Sensors .............................................................................................................................. 43

4.8.1 Standardize ............................................................................................................................................. 44

4.9 Resistivity Sensors ......................................................................................................................................... 44

4.9.1 AUTO Cal using Air and Meg-Ohm process water .................................................................................. 44

4.9.2 Standardize ............................................................................................................................................. 44

4.10 Salinity (Practical Salinity Scale) .................................................................................................................. 45

5.0 MAINTENANCE .................................................................................................................................................. 46

5.1 CLEANING ...................................................................................................................................................... 46

6.0 TROUBLESHOOTING .......................................................................................................................................... 47

7.0 PARTS AND ACCESSORIES .................................................................................................................................. 48

7.1 Front Panel Control Board Exploded ............................................................................................................. 48

7.2 Front Panel Control Board Exploded, with Relays ......................................................................................... 48

7.3 Transmitter Case, back with Cable Glands .................................................................................................... 49

7.4 Replacement Parts......................................................................................................................................... 49

7.5 Accessories .................................................................................................................................................... 50

8.0 S80 SENSORS ..................................................................................................................................................... 51

6

8.1 S80 Installation .............................................................................................................................................. 51

8.1.1 Insertion .................................................................................................................................................. 51

8.1.2 Immersion ............................................................................................................................................... 51

8.1.3 Flow through .......................................................................................................................................... 51

8.1.4 Valve Retractable .................................................................................................................................... 52

8.1.5 Flange fittings ......................................................................................................................................... 53

8.2 S80 Part Number Configurator ...................................................................................................................... 53

8.3 TRITON® DO80 Sensors ................................................................................................................................. 54

8.4 TRITON® TR6 Sensors .................................................................................................................................... 55

8.3 S80 Sensor Maintenance ............................................................................................................................... 56

8.3.1 Electrode Cartridge Installation .............................................................................................................. 56

8.3.2Electrode Cartridge Replacement ........................................................................................................... 56

8.3.3 Electrode Cleaning .................................................................................................................................. 56

8.3.4 pH Electrode Cartridge Cleaning ............................................................................................................ 57

8.3.5 ORP Electrode Cartridge Cleaning .......................................................................................................... 57

8.3.6 pIon Electrode Cartridge Cleaning .......................................................................................................... 57

8.3.7 Dissolved Oxygen Cartridges .................................................................................................................. 58

8.3.8 TRITON DO80 Dissolved Oxygen ............................................................................................................ 58

8.3.9 TRITON TR6 Turbidity ............................................................................................................................. 60

8.3.10 Conductivity and Resistivity sensors .................................................................................................... 60

8.4 S80 Sensor Specifications .............................................................................................................................. 61

8.4.1 pH electrodes.......................................................................................................................................... 61

8.4.2 ORP Electrodes ....................................................................................................................................... 62

8.4.3 Dissolved Oxygen .................................................................................................................................... 62

8.4.4 Ammonium Electrode ............................................................................................................................. 62

8.4.5 Bromide Electrode .................................................................................................................................. 62

8.4.6 Calcium Electrode ................................................................................................................................... 62

8.4.7 Chloride Electrode .................................................................................................................................. 63

8.4.8Cupric Electrode ...................................................................................................................................... 63

8.4.9 Cyanide Electrode ................................................................................................................................... 63

8.4.10 Fluoride Electrode ................................................................................................................................ 63

8.4.11 Potassium Electrode ............................................................................................................................. 63

8.4.12 Silver Electrode ..................................................................................................................................... 64

Page 7 Model T80

8.4.13 Sodium Electrode ................................................................................................................................. 64

8.4.14 Sulfide Electrode ................................................................................................................................... 64

8.4.15 TRITON® DO80 ...................................................................................................................................... 64

8.4.16 TRITON® TR6 ......................................................................................................................................... 65

APPENDIX ................................................................................................................................................................ 66

A. Auto Cal Buffer Tables ..................................................................................................................................... 66

B. T80 HART Menu ............................................................................................................................................... 66

D.MODBUS RTU Register Listing ......................................................................................................................... 68

03 (0x03) Read Holding Registers .................................................................................................................... 68

06 (0x06) Write Single Register ....................................................................................................................... 68

Registers .......................................................................................................................................................... 69

Fault Status ...................................................................................................................................................... 72

Warning Status ................................................................................................................................................ 72

Sensor Type ..................................................................................................................................................... 73

E. Resistivity Temperature Compensation .......................................................................................................... 74

F. SOFTWARE HISTORY ........................................................................................................................................ 74

8

TERMS AND CONDITIONS OF SALE

1. ACCEPTANCE. If this writing differs in any way from the terms and conditions of Buyer's order or if this writing is construed as an acceptance or as a confirmation acting as an

acceptance, then Seller’s acceptance is EXPRESSLY MADE CONDITIONAL ON BUYER’S ASSENT TO ANY TERMS AND CONDITIONS CONTAINED HEREIN THAT ARE DIFFERENT
FROM OR ADDITIONAL TO THOSE CONTAINED IN BUYER'S WRITING. Further, this writing shall be deemed notice of objection to such terms and conditions of Buyer. If this

writing is construed as the offer, acceptance hereof is EXPRESSLY LIMITED TO THE TERMS AND CONDITIONS CONTAINED HEREIN. In any event, Buyer's acceptance of the
goods shall manifest Buyer's assent to Seller's terms and conditions. No addition to or modification of these terms will be effective, unless set forth in writing and agreed to by
Seller.

2. WARRANTIES AND REMEDIES
a. Warranty. Seller warrants to Buyer that it holds and will pass marketable title to the goods sold hereunder. Seller warrants to Buyer that the items and components

manufactured by Seller will be free from defects in material and workmanship (subject, however, to tolerances and variances permitted by the trade hereunder) for a
period one (1) year for non-consumable products. Consumable electrodes and sensors have a conditional warranty based shelf life and process conditions and is
determined by Seller.

b. Exclusion and Conditions. Seller’s obligations with respect to the express warranties and remedies contained herein are conditioned on the following: (i) Buyer's return

of the non-conforming goods, if authorized by Seller: (ii) Buyer shall not assign its rights under these express warranties and any attempted assignment shall render
such warranties, but not any disclaimers or limitations, void and the goods sold shall be sold AS IS; and (iii) all products shall be carefully inspected for damage by Buyer
upon receipt, be properly calibrated for Buyer's particular use, and be used, repaired, and maintained by Buyer in accordance with the instructions set forth in Seller’s
product literature. Repair and maintenance by non-qualified personnel, product subjected to misuse or negligence, and/or damaged during shipment will invalidate
the warranty, as will the use of non-approved consumables or spare parts. As with any other sophisticated product, it is essential, and a condition of Seller’s warranty,
that all personnel using the product be fully acquainted with its use, capabilities and limitations as set forth in the applicable product literature.

3. DISCLAIMER OF IMPLIED WARRANTIES. Seller gives no warranties except those expressly contained herein. Seller disclaims all other warranties implied by law usage of the

trade, course of dealing or course of performance including, but not limited to, the Implied warranties of MERCHANTABILITY and fitness for a particular purpose.

4. LIMITATIONS OF LIABILITY. The following limitations of Seller's liability are acknowledged by the parties to be fair and reasonable and shall apply to any act or omission

hereunder, and to any breach of this contract of which these terms and conditions form a part:

a. Disclaimer of Damage. In no event shall Seller be liable for special, indirect, consequential or incidental damages whether arising under contract, warranty,

tort, strict liability or any other theory of liability. Such damages include but are not limited to loss of profits, loss of use of goods, damage to property, and

claims of third parties.

b. Suitability. Buyer acknowledges that it alone has determined the intended purpose and suitability of the goods sold hereunder. It is expressly agreed by the

parties that any technical or other advice given by the Seller with respect to the use of the goods or services is given without charge and at Buyer's risk;
therefore Seller assumes no obligation or liability for the advice given or results obtained.

c. Notice and Time of Claims.

i. Buyer agrees to check and inspect all products against shipping papers and for damage or shortage upon receipt of goods at destination.
ii. Every claim for shortage, damage in transit, or other cause visible upon inspection shall be deemed waived by the Buyer, or the Buyer’s customer in

iii. The parties expressly waive the statute of limitations and agree that any legal proceeding for any breach of this contract shall be waived unless filed

5. FORCE MAJEURE. Seller shall not be liable for any delay in delivery, or failure to deliver, due to any cause beyond the Seller’s control including but not limited to fires, floods, or

other forces of the elements; strikes, or other labor disputes; accidents to machinery; acts of sabotage; riots; precedence or priorities granted at the request or for the benefit,
directly or indirectly of the federal or any state government or any subdivision or agency thereof; delay in transportation o r lack of transportation facilities; restrictions imposed
by federal, state or other governmental legislation or rules or regulations thereof. If Seller, in its sole discretion, determines that Seller’s performance hereunder would result in
a loss to Seller’s on this sale as computed under Seller’s normal accounting procedures because of causes beyond Seller's control, then the Seller may terminate this agreement
in whole or in part without liability for any delay in the delivery of, or failure to deliver, the goods sold hereunder

6. TAXES AND OTHER CHARGES. The Buyer will pay, or reimburse Seller if it pays, any and all taxes or tariffs or any other similar charges imposed upon th is contract, the goods

covered hereby or the delivery or use or resale thereof.

7. FREIGHT CHARGES. If the sale hereunder is other than F.O.B. Seller's facility, this acknowledgement is based upon the freight charges now in effect. In the event of an increase

or decrease in applicable freight charges before the goods are shipped, such charge in freight will be for the Buyer's account.

8. PRICES AND DELIVERY. Prices quoted herein are F.O.B. shipping point. Deliveries specified are only our best estimate and are subject to change. This quotation is based upon

freight charges now in effect. Buyer will be invoiced at the freight charge prevailing at the date of shipment. Prices are firm for orders meeting Seller's normal shipping
schedules. If shipments are held or postponed for any reason other than Seller's fault, and a price increase becomes effective during the period of such hold or postponement,
the increase will apply to all shipments that are held or postponed thirty (30) days or more from the effective date of the increase.

9. PAYMENTS. If in the judgment of Seller the financial condition of Buyer at any time prior to shipment does not justify the terms of payment specified, Seller may cancel the

order, withhold shipment, and/or require full or partial payment in advance. If payment is not made when due, Seller may suspend all future delivery or other performance with
respect to Buyer without liability or penalty and, in addition to all other sums payable hereunder, Buyer shall pay to Seller (i) the reasonable costs and expenses incurred by
Seller in connection with all actions taken to enforce collection or to preserve and protect Seller’s rights hereunder, whether by legal proceedings or otherwise, including
without limitation reasonable attorneys’ fees, court costs and other expenses and (ii) interest on all amounts unpaid after 30 days charged at the monthly rate of 1-1/2% or the
highest rate permitted by law, whichever is lower.

10. CANCELLATION OR ALTERATION. Buyer may not alter or cancel any order without Seller’s written consent. For any order altered or cancelled with Seller's consent, Buyer must

pay for all expenses and labor incurred up to the time of Seller’s consent, plus a reasonable percentage for profit. Any order delayed or deferred by Buyer will be subject to price
escalation for increased costs of production, and any other expenses caused by the delay. Material on such orders will be stored at Buyer's risk. Seller reserves the right to
invoice Buyer and require payment before shipment of any delayed or deferred order.

11. TITLE AND RISK OF LOSS. Title and risk of loss shall pass to buyer at Irvine, California, unless otherwise specified in the contract. If delivery is made by common carrier, risk of

loss shall pass upon delivery to the carrier. Claims for loss or damage in transit must be made by Buyer to the carrier. Seller accepts no responsibility for loss or damage to
product in transit.

12. PATENT OR TRADEMARK INFRINGEMENT. If the goods sold hereunder are to be prepared for manufacture according to Buyers specification, Buyer shall indemnify Seller

against any claim or liability for patent, trademark, service mark or trade name infringement on account of preparation, manufacture and/or sale.

13. NON-WAIVER. If Government Contract Regulations require the addition, deletion, or modification of these terms and conditions upon prior n otification to Seller and Seller's

written acceptance thereof, such changes shall become a part of these terms and conditions. Seller shall not be bound by any Government Contract Regulations applicable to
Buyer’s contracts with the U.S. Government unless Buyer has expressly acknowledged, on the face of this document, the applicability of such Regulations to the transaction
between Buyer and Seller contemplated herein. Absent such acknowledgement, Seller is making the assumption in issuing this document that no such Regulations apply.

the case of resale, unless delivered in writing to Seller by Buyer thirty (30) days from the tender of delivery of the goods to Buyer, provided, however,
that claims for shortage must be made within seven (7) days of receipt.

within one (1) year after the accrual of the cause of action thereof.

Page 9 Model T80

14. JURISDICTION. All such disputes shall be resolved in a court of competent jurisdiction in Orange County, California. Buyer hereby consents to the jurisdiction of the State and

Federal Courts sitting in Orange County. Notwithstanding the above, should either party contest the jurisdiction of such courts, the other party may institute its suit in any court
of competent jurisdiction.

15. APPLICABLE LAW. All questions arising hereunder or in connection with the quotations or any order submitted in connection therewith and/or the performance of the parties

hereunder shall be interpreted and resolved in accordance with the laws of the state of California without regard to its conf lict of law provisions and excluding the United
Nations Convention on the International Sale of Goods.

RETURN GOODS POLICY

All requests for returned goods must be initiated through our Customer Service Department. Please call our
phone number [phone] with the specifics of your request. The following conditions must be satisfied for
consideration of applicable credit for the return of products purchased from Electro-Chemical Devices:

1) The item is unused and in the original package.

2) The item was shipped directly from Electro-Chemical Devices.

3) The item has not been damaged in shipment to Electro-Chemical Devices.

4) Items containing date-sensitive parts such as electrodes, must be returned within 1 month of the

invoiced date.

5) Items without date-sensitive parts must be returned within 3 months of the invoiced date.

A Return Merchandize Authorization Number must be obtained from Customer Service and be provided on all
paperwork and packaging. To obtain a Return Merchandize Authorization Number, please provide the reason
for return, the date of purchase, your original purchase order number, and either our order number or our
invoice number. The issuance of a Return Merchandize Authorization Number is a verbal approval for return
only and does not guarantee credit or allowance. Returned goods must be received within 30 days of the
issuance date of the Return Merchandize Authorization Number or it will become null and void.

Necessary physical and mechanical inspection is completed upon receipt of the item. Applicable credit or
equivalent allowance is determined after inspection of the returned item. If all of the above conditions are met,
and the item has been approved to return to our stock, a restocking charge of 25% of the purchase price is
deducted from the applicable credit.

10

UNPACKING THE INSTRUMENT

WARNING Electrical installation must be in accordance with the National Electrical Code
(ANSI/NFPA-70), Canadian Electrical Code and/or any other applicable national or local
codes.

Your Electro-Chemical Devices instrument has been carefully packaged to protect it from damage during
shipment and dry storage. Upon receipt please follow the procedure outlined below.

1. Before unpacking, inspect the condition of the shipping container to verify proper handling by the

carrier. If damage is noted, save the shipping container as proof of mishandling for the carrier.

2. Check the contents of the shipping container with the items and quantities shown on the packing list.

Immediately report any discrepancies to ECD.

3. Save the original packing material until you are satisfied with the contents. In the event the product(s)

must be returned to ECD, the packing material will allow you to properly ship it to ECD.

4. Familiarize yourself with the instrument before installation, and follow proper installation and wiring

procedures.

5.

Installation and wiring

Failure to follow the proper instructions may cause damage to this instrument and warranty invalidation.

Use only qualified personnel to install, operate and maintain the product.

The Model T80 transmitter should only be used with equipment that meets the relevant IEC, American or
Canadian standards. ECD accepts no responsibility for the misuse of this unit.

Basic Parts List

1. Model T80 Transmitter

2. Mounting Hardware

3. Instruction Manual

INSTRUCTION MANUAL REVISION

Revision Date Remarks

A 07/12 Initial release
B 03/13 Added Sensors and Conductivity Data
C 03/13 Updated Symbols
D 07/13 MODBUS Update
E 07/13 Turbidity, Conductivity, Cal Menu
F 05/14 Two Channels, MODBUS Update,
G 07/14 Resistivity Calibrations added
H 08/15 S80 Table corrected
I 09/15 Icons deleted
K 12/15 New Location
L 05/16 Salinity Added

Page 11 Model T80

1.0 GENERAL DESCRIPTION

The ECD Model T80 transmitter is a single or dual channel, intelligent, multi­parameter transmitter designed for the online continuous measurement of pH, ORP,
pION, dissolved oxygen, conductivity, resistivity and turbidity in a general purpose
industrial environment. The Model T80 transmitter digitally communicates with any

ECD S80 digital sensor, automatically configuring the transmitter’s menus and

display screens to the measured parameter.

The Model T80 transmitter can be loop powered, 24 VDC powered or 100-240 VAC line powered. The standard
configuration has a 4-20 mA output and a RS485 serial communication port with MODBUS®RTU output. A HART®
communication version (single channel version only) is also available. Alarm relays are optionally available on
either line powered transmitter.

1.1 FEATURES

 Multi-Parameter, pH, ORP, Specific Ion, Dissolved Oxygen, Conductivity, Resistivity
 Simple, user friendly menu structure
 Noise free digital communication with sensors
 Reads and writes calibration data to sensor
 Dual Channel option has interactive channels, pH compensated readings, interfering ion corrections…
 Non-Isolated 4-20 mA output and MODBUS® RTU standard, optional HART®

1.2 SPECIFICATIONS

1.2.1 INPUT SPECIFICATION

Digital protocol, all ECD S80 sensors
Optional analog to digital converter, 5 inputs [mV+, mV-, solution ground, temp + temp - (100 K-ohm)]

1.2.2 INPUT RANGES

pH -1.00 - 15.00 pH
ORP -1500 - +1500 mV
pION 000.1 - 999.9, Auto Ranging: ppb ↔ ppm ↔ ppT (thousand)
Dissolved Oxygen 000.1 - 999.9, Auto Ranging: ppb ↔ 20.00 ppm, % SAT, mg/L
Conductivity 0.000 - 2.000, Auto Ranging: µS ↔ mS ↔ S
TDS 0.00 - 9999 ppm
Salinity (PSU) 0.12 – 43.00
Resistivity 0.00 - 50.00 MΩ
Turbidity 0 - 4000 NTU/FNU, 0 – 9999 ppm, mg/l, 0 - 100% % solids
Temperature 100 K-ohm TC, -30°C - 140°C

1.2.3 ACCURACY

pH 0.02 pH
ORP ± 1 mV
pION Specific to electrode type
Dissolved Oxygen 2% of range

12

Conductivity 2% of range
Resistivity 2% of range
Turbidity 2% of reading
Temperature ± 0.3°C

1.2.4 OUTPUT SIGNALS

Non-isolated 4-20 mA output (standard, one per Channel), Fault Condition: 3.5 mA, 22 mA or none
Modbus RTU (standard)
HART® (optional)

1.2.5 CONTACT RELAYS

(Optional) Three (3) SPDT, 1 form C, 250 VAC, 10 Amp resistive maximum, relays, user configurable as Hi/Lo
alarms with expiration timer, Periodic Timers or Fault alarms

1.2.6 DISPLAY

128 x 64 pixels (2.75” x 1.5”) LCD, Black on Grey background on loop powered instruments, Blue on White
background with LED backlight on 100-250 VAC and 24 VDC powered instruments, English or icon based
menus, numeric and graphical displays

1.2.7 ENCLOSURE

Beige Polycarbonate, IP65, weatherproof, ½ DIN, (L x W x D) 5.7” X 5.7” X 3.5” (14.4cm X 14.4cm X 9.0cm)

1.2.8 POWER

Code -0 Loop powered, 24 VDC 600 Ω maximum load (18-36VDC @ 35 mW minimum)
Code -1 24 VDC (18-36 VDC @ 250 mW minimum)
Code -2 100-240 VAC, 50/60 Hz, 4W, protected with 250V, 1A, Slow Blow fuse

1.2.9 ENVIRONMENTAL CONDITIONS

Outdoor use (IP65)
Ambient Temperature -20°C - 70°C (24 VDC Models)

-20°C - 60°C (100-240 VAC Models)
Storage Temperature -30°C - 85°C
Relative Humidity 0 – 80%, up to 31°C
Decreasing linearly to 50% RH a 40°C
Altitude Up to 2000 m (6500 ft)
Mains Supply Voltage Fluctuations up to ±10% of the nominal voltage
Transient over voltages: CAT II
Pollution Degree: 2

1.2.10 SHIPPING

Size 8” x 8” x 5” (20.5 cm x 20.5 cm x 12.7 cm)
Weight 1.6 lbs. (0.75 kg)

Page 13 Model T80

1.3 MODEL CODES

Model T80-

1st Channel

1 (S80) S80 Digital Sensor, pH, ORP, pION, DO, DO90 ppb DO, Conductivity, Resistivity

2 Triton® DO80 Optical DO

3 Internal Preamp, Digital to S10/S17 pH, ORP, pION (+mV, -mV, 100K TC, SG)

4 Internal Preamp, Digital to SGTC Conductivity/Resistivity (CSX2 or 2 electrode contacting )

5 Internal Preamp, Digital to SGTC Dissolved Oxygen, (Steam Sterilizable Products)

6 Triton® TR6 Turbidity

2nd Channel

0 No Second Channel

1 (S80) S80 Digital Sensor, pH, ORP, pION, DO, Conductivity, Resistivity

2 (ODO) Triton® DO80 Optical DO

Power Supply

-0 Loop Powered Transmitter

-1 24 VDC Powered Transmitter

-2 100-240 VAC powered Transmitter

Relay Option

0 No Relays

1 (3) form 1C 250 V 3A relays

Outputs

0 4-20 mA output and MODBUS

1 HART®

2 2 x 4-20 mA & MODBUS

Mounting
Hardware

00 No Mounting

01 Universal

02 Panel Mount

03 Handrail Mount

04 Sunshield Pole

05 Sunshield Rail

Model T80-

1 1 -2 1 2

01

Example above shows part# T80-11-212-01, a two channel T80 transmitter for use with two S80 sensors,
110/220 VAC powered with two 4-20 mA outputs and MODBUS RTU and a universal mounting bracket.

14

2.0 INSTALLATION

2.1 MOUNTING

Mount the T80 in a location where there is easy access to the analyzer and sensors. Install the system in an area
where vibrations, electromagnetic and radio frequency interference are minimized or absent. Do not mount in
direct sunlight or areas of extreme heat (temperature > 120°F). The IP65 T80 is suitable for outdoor use but it is
best to mount it with a protective cover or sunshield to prevent discoloring over the years.

Universal Mounting Brackets

Rail Mounting

Page 15 Model T80

Panel Mounting

Cut Out: 5.35” x 5.35” (13.6 cm x 13.6cm)

2.2 WIRING

Electrical wiring should only be conducted by qualified personnel. See the T80 wiring diagram in Figure 2.2.X

Figure 2.2.1 Loop Powered Transmitter

16

Figure 2.2.2 4-Wire Transmitter, 24VDC or /110/22 VAC, MODBUS, Relays/Optional Digital Preamp

Figure 2.2.3 4-Wire Transmitter, Model TR86 turbidity and Model DO82 Dissolved Oxygen sensors

Page 17 Model T80

Warning: RISK OF ELECTRICAL SHOCK

Disconnect Power before opening instrument.

WARNING Electrical installation must be in accordance with the National Electrical Code
(ANSI/NFPA-70), Canadian Electrical Code and/or any other applicable national or local
codes.

2.2.1 WIRING, POWER

ECD recommends using a thermoplastic, outdoor sunlight resistant jacketed cable, wet location rated and ½”
flexible conduit. The power should be hard wired with a switch or breaker to disconnect the analyzer from the
main power supply. Install the switch or breaker near the analyzer and label it as the Power Switch for the
analyzer.

18

Loop Powered (2 wire configuration)
Attach the 24VDC signal cable to terminals #1 and #2 as shown in Figure 2.2.1 and on the diagram inside of the
T80 cover. Feed the cable through the gland fitting on the right hand side of the T80. Tighten the cable gland to
provide a good seal to the cable. The instrument can be powered up at this point with no harm to the analyzer
but it is best to wait until the sensor is installed.

24VDC (4 wire configuration)
Attach the 24VDC power cable to terminals #1 and #2 as shown in Figure 2.2.2 and on the diagram inside of the
T80 cover. Attach the 4-20 mA1 cable to terminals #3 (out) and #2 (return)single channel unit and attach the 4­20 mA2 cable to terminals #4 (out) and #2 (return) for a two channel instrument. Feed the cables through the
gland fitting on the right hand side of the T80. Tighten the cable gland to provide a good seal to the cable. The
instrument can be powered up at this point with no harm to the analyzer but it is best to wait until the sensor is
installed.

110/220 VAC (4 wire configuration)
Attach power cable as shown in Figure 2.2.2 or as on the diagram inside of the T80 cover. Feed the cable
through the gland fitting on the right hand side of the T80. Tighten the cable gland to provide a good seal to the
cable. The instrument can be powered up at this point with no harm to the analyzer but it is best to wait until
the sensor is installed.

2.2.2 WIRING, SENSOR

Attach the sensor wires as described on the diagram inside the T80 cover. Feed the sensor cable through the
gland fitting on the left hand side of the T80. Do not use the same gland fitting for the AC power or
Alarm/Relays. The green terminal strip connectors are detachable from the circuit boards. Remove the
connector by pulling straight back from the circuit board.

2.2.3 WIRING, 4-20 MA OUTPUTS

Loop Powered Instruments:

Connect the 4-20 mA cable to terminals #1 (+24V) and #2 (-24V), Model T80-XX-0 X-XX.

24 VDC or 110/220 VAC powered instruments:

For instruments powered with 24VDC or the internal power supply, Model T80-XX-1X-XX (24VDC) and T80-XX­2X-XX (110/220 VAC), connect the 4-20 mA cable(s) to terminals #3 (out) for channel 1 and #2 (return) and to
terminals #4 (out) for channel 2 and #2 (return).

Transmitters with HART® Communication can be wired as shown below. See HART® Communication menu in
Appendix 9.2:

Page 19 Model T80

2.2.4 WIRING, CONTACT RELAY OUTPUTS

The standard configuration has three SPDT 230V 5 A relays that can be wired either normally open (NO) or
normally closed (NC). The default configuration is set to use the relays as normally open.

2.2.5 WIRING, SERIAL OUTPUT MODBUS RTU

Attach the sensor wires as shown in Figure 2.2.2 or as described on the diagram inside the T80 cover. Feed the
sensor cable through the gland fitting on the left hand side of the T80. Do not use the same gland fitting for the
AC power or Alarm/Relays. See MODBUS command register in Appendix D.

20

3.0 OPERATION

The ECD Model T80 transmitter is an intelligent, single or dual
channel multi-parameter transmitter designed for the online
continuous measurement of pH, ORP, pION, conductivity, resistivity
or Dissolved Oxygen in a general purpose industrial environment.
The Model T80 transmitter digitally communicates with any ECD S80
digital sensor. The measurement identity is contained in the

sensor’s memory. When an S80 sensor is connected to the
transmitter it automatically configures the transmitter’s menus and

display screens to the measured parameter.

3.1 KEYS

The functions associated with each key are displayed on the screen, above the key for the Selection Adjustment
Keys and to the left of the key for the HOME and BACK keys. Press any Selection Adjustment key twice within
one second to enter the HOME Menu Screen.

3.1.1 HOME/EXIT KEY

The HOME key performs two functions, it selects which Home Screen is displayed and it returns the active
screen to the HOME Menu Screen from anywhere inside the menu structure.

Three Display screens are available:

1. DATA SCREEN: Displays the measurement type, numerical value,

engineering Units, % Output of the 4-20 mA channel and temperature.

2. mV SCREEN: Displays the measurement type, the sensor’s raw millivolt

Value, % Output of the 4-20 mA channel and temperature.

3. GRAF SCREEN: Displays a Graphical representation of the 4-20 mA channel

% Output, the measurement type, the engineering units, and temperature.
Only one of the three graphical display styles is available through the HOME
key, either the Bar, Gauge or Line display. Choose which style will be
displayed in the Graph Menu. (pathway to Graph Menu: CONFIG → XMTR
→ LCD → Graph menu)

Each of the above screens also displays the condition of the optional Alarm Relays,
black if energized and white if de-energized.

The HOME key changes to the EXIT key in the HOME Menu Screen, pressing EXIT prompts the user to “Save

Changes” YES/NO when exiting the HOME Menu. YES applies any changes made in

the menus, NO exits the HOME Menu without applying any changes made in the
menus.

3.1.2 BACK/HOLD KEY

The BACK key changes the screen to the previously displayed screen when inside a
menu, it moves BACK one screen. On a dual channel transmitter it toggles between the PV1, PV2 and Dual
Channel Screens. The HOLD key toggles the output HOLD function ON/OFF in the MENU HOME screen.

Page 21 Model T80

3.1.3 SELECTION ADJUSTMENT KEYS

The (4) Selection/Adjustment keys allow navigation and numerical adjustments to be made in the MENUs. To
enter the HOME Menu screen press any of the Selection/Adjustment keys twice within one second. The
various Menu choices and adjustment tools are displayed above the buttons once inside the MENU.

3.1.4 ALPHA NUMERIC ENTRY

The LABEL and PASSWORD (Caps and Numbers only) Menus allow alphanumeric entry. Entry is accomplished by
scrolling through the alphanumeric list with the ▲ (forward) and ▼ (backwards) arrows to the character of
choice and then moving to the NEXT digit. Pressing and holding the ▲ or ▼ keys will initiate two speed auto
scrolling. The character set is sequentially listed below. The first character in the set is an empty space.

! ” # $ % & ‘ ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ ¥ ] ^ _
‘ a b c d e f g h I j k l m n o p q r s t u v w x y z { | } → ←

3.2 MENU STRUCTURE

Double tap any Selection/Adjustment key to enter the HOME Menu Screen. Five menu choices will appear, CAL,
CONFIG, INFO, SIM and HOLD. Each of the Menus is detailed below.

3.2.1 HOLD (OUTPUT HOLD)

Pressing the HOLD Key activates the HOLD function, HOLD is ON, displayed.

 Freezes the 4-20 mA output at the last value prior to activation
 Freezes optional Alarm Relays in the current state
 While in the HOLD mode the % Output display toggles between the last

value and HOLD

Pressing HOLD again turns the hold function off, Hold is OFF, displayed. The HOLD function remains ON until it is
turned OFF. (See Time Out in CONFIG>XMTR>OUTPUT>HOLD)

3.2.2 CAL (CALIBRATION MENU)

Four options are available, AUTO, STAND, MANUAL and TEMP. On dual channel instruments choose Sensor 1 or
Sensor 2 when prompted.

The first screen asks, “Is this a New Sensor, YES / NO”. If YES the calibration history
from the previous sensor is cleared from memory and a new register is started, if NO
then the calibration is written to the memory stack, (3) sets of data are stored.

 AUTO is a two point calibration. The calibration proceeds in two steps, AutoCal 1 is an offset calibration

and AutoCal 2 is a slope calibration. Auto Cal provides automatic solution recognition of the calibration
solutions used for each measurement in accordance with the following list:

1. pH Calibration Buffers (US Standard), pH 4.01, pH 7.00 and pH 10.00 (see Appendix A)

2. ORP Calibration Solutions: Quinhydrone saturated: pH 4.01= +89 mV, pH 7.00= +266 mV

3. pIon Calibration Solutions: 1.00, 10.00, 100.0 ppb, ppm, ppt

(thousand)

4. Dissolved Oxygen: Zero ppm (Sodium sulfite, Na

saturated water, 8.25 ppm

in water), Air

2SO3

22

Any two solutions can be used for AUTO calibration however if solutions other than those listed above
are used for calibration then the calibration values must be entered manually.

 STAND is standardization, a single point calibration. Standardizations are typically used to adjust the

process reading to agree with a laboratory determined “grab sample” reading.

 MANUAL is a data entry screen. Manual calibration allows the user to enter a concentration with the

corresponding mV value and a slope for an electrode. Laboratory generated calibration data for an
electrode can be input to a remote analyzer where calibration is difficult or impractical.

 TEMP allows the displayed temperature to be trimmed to agree with actual

process temperature.

3.2.3 CONFIG (CONFIGURATION MENU)

Four options are available in the Configure Menu, XMTR, SENSOR, LOAD DEFAULT

and Dampen.

 XMTR enters the Transmitter Configuration menu.

o LCD access the Display Configuration Menu

 SETUP adjust screen lighting characteristics

 Temp. Choose °C or °F
 CONT adjust Contrast
 BACK LIGHT adjust Backlight Timeout, from always ON to OFF after 10 minutes

 GRAPH provides the choice of which Graph style is displayed on the Home screen.

 LINE , Moving average, vertical scale set to 0-100%

of the 4-20 mA output and user defined time scale

 GAUGE, Current reading 0-100% of 4-20 mA range
 BAR, Current reading 0-100% of 4-20 mA range

 LABELS

 TAG, Enter up to 2 lines x 16 characters, example,

Name, tag #... Displayed in INFO screen

 TAG ON, Turn TAG ON/OFF, adds TAG to Main

Display Sequence, DATA → mV → GRAF → TAG →
DATA

 POP UP, Turns ON/OFF, the double tap HOME Screen pop up memo
 SENSOR, Enter up to 2 lines x 16 characters

o OUTPUT access the Output Configuration Menu

 4-20 mA configure 4-20 mA output (PV or Temp or More)

 RANGE Enter 4 mA value and 20 mA value
 CAL Trim 4.00 mA output and 20.00 mA output
 FAULT Choose fault condition 3.5 mA, 22 mA, None

 Optional 2
 RELAY

nd

4-20 mA, same as above

 RLY1,2,3 Choose relay type:

o Alarm, enter the Set point ON, Set Point OFF,

Expiration time, Delay ON and Delay OFF

Page 23 Model T80

times and the State, energize: changes state from de-energized to
energized on alarm.

o Timed, Enter Period, Duration times and Hold On/Off
o Fault, No input required, relay condition changes from energize to de-

energize.

o Disable, Inactivates relay and removes the relay 1 button from the

HOME Screen display.

 HOLD, Freezes outputs at current value and locks relays in their current state.

 Hold Timeout, Removes HOLD after a certain period

of time, default setting: No Timeout, selections
include 15 minutes, ½ hour, 1 hour

o SERIAL MODBUS configure serial output,

 ADDRESS, enter address: 001 to 247
 BAUD, Choose baud rate, default 9600
 FORMAT, set serial data format, default value: 8N1, 8 bit, no

parity bit, 1 stop bit

o SERIAL HART configure output,

 ADDRESS, enter address: 01-63
 BAUD, default 1200, no adjustment available
 FORMAT, default value: 8O1, 8 bit, Odd parity bit, 1 stop bit,

no adjustment available

o PASSWD Enter 4 character password to protect access to MENU Level, CAL Menu, CONFIG

Menu and SIM Menu (simulate). Each level can be turned ON or OFF and can have a unique
password.

 MENU ON/OFF _ _ _ _ Locks Main Menu
 CAL ON/OFF _ _ _ _ Locks CAL and CONFIG
 CONFIG ON/OFF _ _ _ _ Locks CONFIG
 SIM ON/OFF _ _ _ _ Locks SIM and CONFIG

 SENSOR enters the sensor configuration menu.

o Choose SENSOR 1 or 2

 TYPE, Allows T80 transmitter to configure the S80 sensor.

For use only when switching the measurement electrode
type in an S80 sensor, i.e. for a pH electrode to a pION
electrode. Select Sensor Type: pH, ORP, DO2, NH3, NH
Ca++, Cl-, Conductivity, Resistivity, Cu++, CN-, F-, NO
Na+, S--

 T COMP, Enter % temperature compensation per degree: pH, pION 0.33%, ORP 0.00%,

DO2 4%, Conductivity 2%, Resistivity -5.4% (see Table Appendix D)

 ISO PT, Enter Iso Potential value in mV. The Iso Potential is

the point where changes in the temperature do not cause
changes to the signal.

o COMP Dual Channel Only, Sets compensation type: Dissociation

(pKa), NH

+

, Free Chlorine, HF, S-2, Interference, X ppm Sensor 1 = 1

4

ppm Sensor 2, Percentage % change per pH.

+

, Br-,

4

-

, K+, Ag+,

3

24

o Qty of SENSORS, Choose 1 or 2

Fault

Definition

Recommendation

Memory Error

AN ERROR WAS FOUND
WITH THE MEMORY OF
THE MICROCONTROLLER

RETURN TO FACTORY
FOR SERVICE

Input Voltage OOT

POWER IS OUT OF
TOLERANCE

CHECK WIRING TO
THE TRANSMITTER

+12V OOT

ONBOARD 12V IS
OUT OF TOLERANCE

RETURN TO FACTORY
FOR SERVICE

+3.3V OOT

ONBOARD 3.3V IS
OUT OF TOLERANCE

RETURN TO FACTORY
FOR SERVICE

Loss of Comm

COMMUNICATION WITH
THE SENSOR WAS LOST

CHECK WIRING TO
THE SENSOR

No Sensor

NO SENSOR WAS FOUND
AT START-UP

CHECK WIRING TO
THE SENSOR

Cal Failed

SENSOR CALIBRATION
FAILED

1) CLEAN SENSING TIP

2) VERIFY SOLUTIONS

3) DO NOT LEAVE
UNATTENDED

4) RE-CALIBRATE

Relay 1 Expired

RELAY 1 TIME
ON EXPIRED

1) CHECK SENSOR OP

2) CHECK AUX EQUIP
A) PUMPS
B) TANKS

Relay 2 Expired

RELAY 2 TIME
ON EXPIRED

1) CHECK SENSOR OP

2) CHECK AUX EQUIP
A) PUMPS
B) TANKS

Relay 3 Expired

RELAY 3 TIME
ON EXPIRED

1) CHECK SENSOR OP

2) CHECK AUX EQUIP
A) PUMPS
B) TANKS

 Load Default resets all Menus to factory default configuration.

3.2.4 INFO (INFORMATION MENU)

The Information Menu provides two choices,

 Transmitter Screen, details the Name, Power type, Serial #, Firmware

version and the output configuration(s).

 Sensor Screen, details the Name, Part #, Serial # and three sets of

Calibration data.

3.2.5 SIM (SIMULATION MENU)

The Simulation menu allows the Input or Output signals to be simulated.

 SYSTEM allows the Input to be simulated. Two choices are available, FIXED is

a fixed value, RAMP varies the signal across the 4-20 mA range, from the
lowest value to the highest value and back, activating and deactivating relays
if present. The RAMP has two adjustments the Ramp period, 30 seconds to 2
minutes and Duration; 1 cycle, 5, 10, 20, 30 minutes.

 RELAYS allows individual relays, #1, #2, and #3 to be activated and deactivated
 4-20 mA allows the output to be simulated from 4.00 mA to 20.00 mA.

3.2.6 FAULT SCREENS

Page 25 Model T80

3.2.7 SENTINEL® SCREENS

The SENTINEL feature allows the Model T80 transmitter to provide Pre-pHault
diagnostic information about the accuracy of a pH, ORP or pIon measurement. The
SENTINEL displays a filled triangular gauge that decreases proportionally to the
degradation of the reference electrode. A filled gauge indicates a properly
functioning measurement while the emptying gauge indicates the remaining life of
the electrode. This Pre-pHault diagnostic alerts the user to potential problems and
provides a visual indicator of the sensor’s remaining life before the measurement
actually fails.

The Model T80 transmitter only displays the SENTINEL functions when a Model S80
SENTINEL sensor is connected. The Model S80 SENTINEL sensor uses Diagnostic
electrodes designated by Part#’s 20053XX, these electrodes use a triaxial connector with a, PV connection (pH,
ORP, Ion), Reference connection and Diagnostic connection.

On a dual channel instrument an asterisk *, will be displayed in the sensor name block, SENSOR 2 *. The
SENTINEL function will only be visible in the Single Screen mode, not in the Dual Screen mode. Toggle the BACK
Key from Dual → Sensor 1 → Sensor 2 to see the SENTINEL function.

Configure SENTINEL Function

The SENTINEL function is located in the Configure Sensor menu:

CONFIG → SENSOR → SENSOR 1 or 2 →MORE → SNTL

There are three values displayed:

Vo = SENTINEL Voltage offset, The diagnostic voltage of a new electrode
Ve = SENTINEL expiration Voltage, Vo + Range
RANGE = The shift in the diagnostic voltage required to trigger diagnostic fault.

The default values of Vo = 0.0 mV and the Range = 60 mV are good for most
situations. The starting diagnostic voltage is typically near 0 mV on a new electrode
and if the readings have drifted 60 mV apart (a full pH unit) then electrode service is
required.

26

3.3 START UP GUIDE

Install and wire the T80 Transmitter as described in Sections 2.1 and 2.2 above.

Connect the sensor to the transmitter as described in Section 2.2 above.

Supply power to the Model T80 transmitter.

Verify the proper measurement type is displayed, pH, ORP or Ion. The sensor automatically uploads the
measured parameter, the calibration data and the range of measurement to the transmitter. The default
configuration of the 4-20 mA output is the range of the sensor, 0-14 pH for pH sensors, -1500 - +1500 for ORP or
0-XXXX ppm for a pIon Sensor. To change the 4-20 mA range, follow the instructions in Section 3.3.1 below.

3.3.1 CONFIGURE 4-20 MA OUTPUT RANGE

 Double press any key except the HOME key to enter the HOME Menu. Follow the path below to set the

4-20 mA range.

 HOME Menu → Press CONFIG → XMTR → OUTPUT → 4-20 (1)(2) → PV or

TEMP

 Press CHANGE to enter New Values.
 Choose 4 mA value, press OK

 Enter value using ▲ or ▼and NEXT to move to the next digit, press OK→Back
 Choose 20 mA value, press OK,
 Enter value using ▲ or ▼and NEXT to move to the next digit, press OK→Back
 Press BACK to return to the CONFIGURE 4-20 mA screen or HOME to return to

the HOME Menu screen.

3.3.2 CONFIGURE 4-20 MA FAULT CONDITION AND CAL

 In the CONFIGURE 4-20 mA screen, Press MORE → FAULT or
 Choose Low Fault 3.5 mA or Hi Fault 22 mA or NONE, (default setting NONE),

Press OK

 Press BACK → CAL, connect DVM to 4-20 mA line, Press 4.00 mA then adjust value to the DVM reading,

Press 20.00 mA and adjust value to the DVM reading. The 4-20 mA output is calibrated.

3.3.3 CONFIGURE ALARM RELAYS (RELAYS OPTIONAL)

 HOME Menu → Press CONFIG → XMTR → OUTPUT → RELAYS→RLY1
 Choose the ALARM, TIMER, FAULT or DISABLE mode for Relay 1
 ALARM Displays:

o SET POINT ON: The Process Variable Value that activates the relay.
o EXPIRATION: Enter a time that should not be exceeded before the PV should have changed

enough to activate the OFF set point. At the Expiration time the relay is deactivated and a Fault
condition is initiated. Fault: Relay 1 Time expired: Cause: Loss of reagent, failed sensor ….

o Delay ON: The amount of time the PV must remain above/below the set point before the relay

activates.

o SET POINT OFF: The Value of the process variable that deactivates

the relay.

 SET POINT OFF > Set Point → Low Set Point
 SET POINT OFF < Set Point → Hi Set Point

Page 27 Model T80

o Delay OFF: The amount of time the PV must remain above/below the hysteresis point before

the relay deactivates.

o STATE: Energize (relay is energized on activation)/De-energize (relay is de-energized on

activation)

 TIMER activates the relay periodically for a specific duration, user configured period and duration
 FAULT sets the relay condition to a de-energize state and NC relay closes in response to a Fault

condition.

 DISABLE turns off the relay and removes it’s icon from the HOME screen

Setting up an Alarm Relay

 Choose ALARM
 Press CHANGE to enter new values
 Choose ON Set Point, Press OK
 Enter value using ▲ or ▼and NEXT to move to the next digit, press OK, press BACK (Min –Max values

indicate the range of acceptable values)

 Choose Expiration, Press OK,
 Choose time from drop down menu using ▲ or ▼, press OK, press BACK
 Choose OFF Set Point, Press OK
 Enter value using ▲ or ▼and NEXT to move to the next digit, press OK, press BACK
 Choose Delay ON, Press OK
 Enter value using ▲ or ▼and NEXT to move to the next digit, press OK, press BACK
 Choose Delay OFF, Press OK
 Enter value using ▲ or ▼and NEXT to move to the next digit, press OK, and press BACK when done to

exit Relay 1.

 Repeat for Relay 2 and Relay 3.

3.3.4 EXIT MENUS AND RETURN TO MAIN DISPLAY

 Press HOME Key to return to the Home Menu Screen
 Press Hold to turn OFF Hold
 Press EXIT Key to exit the menu
 “Save Changes?” press YES
 Choose Display Mode, DATA, mV or GRAF by pressing selection Key. The

selection key displays which screen will be displayed next.

o The type of graphical display used, Line, Bar or Gauge is selected in

CONFIG → XMTR → LCD → GRAPH → LINE, GAUGE, BAR

3.3.5 SENSOR START UP

All sensors are supplied with protective caps over the sensing end. Remove the
cap(s) from the sensor before installing in the process. All sensors were calibrated
at the factory before shipment, no calibration should be necessary before use.
Allow the sensor to equilibrate to the process solution conditions for ½ hour before
verifying the reading against a grab sample. If calibration is required follow the
instruction in Section 4.0 below.

28

3.4 USER SELECTABLE OPTIONS

Full Screen Period

15 minutes

1 hour

12 hours

1 day

2 days

Sample Rate ( 1 point every)

10 seconds

40 seconds

8 minutes

15 minutes

30 minutes

3.4.1 SCREEN LIGHTING

LED back lighting is available on AC and DC powered instruments only, this feature is
inactive on loop powered instruments.

Contrast can be adjusted for optimal viewing. The Backlight can be adjusted to
timeout after a set period of time or remain on.

Location: CONFIG → XMTR → LCD → Set Up → CONT, BACK LIGHT

3.4.3 GRAPHICAL DISPLAY

There are three graphical display choices:

 LINE, The Line graph is a moving average of the process variable with the 4-20 mA range as the

maximum/minimum values and a choice of time scales.
The Time scale is the amount of time displayed across the full screen. Choices include:

 GAUGE, Live reading displaying 0-100% of 4-20 mA range. The Alarm Relay number(s), #1, #2 and#3

mark the respective set points on graph.

 BAR, Live reading displaying 0-100% of 4-20 mA range. The Alarm Relay number(s), #1, #2 and#3 mark

the respective set points on graph.

Pressing OK after selecting a Graphical Display will exit the menu structure and return to the Main Display.

Location: CONFIG → XMTR → LCD → GRAPH

3.4.4 TAG TRANSMITTER NAME

Two 16 character lines are available for naming the transmitter, Upper and Lower case characters, Numbers and
Punctuation are available. The information entered will be displayed in the INFO
screen and optionally in the Main display sequence if activated in the TAG ON
menu. The character set is listed below sequentially; the first character in the set is
an empty space.

! ” # $ % & ‘ ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ ¥ ] ^ _
‘ a b c d e f g h I j k l m n o p q r s t u v w x y z { | } → ←

Entry is accomplished by scrolling through the alphanumeric list with the ▲
(forward →) and ▼ (backwards ←) arrows to the character of choice and then
pressing NEXT to advance the cursor to the next digit. Pressing and holding the ▲
or ▼ keys will initiate two speed auto scrolling. Press BACK to exit the screen.

Location: CONFIG → XMTR → LCD → LABELS → TAG

Page 29 Model T80

3.4.5 SENSOR NAME

Two 16 character lines are available for naming the Sensor, Upper and Lower case characters, Numbers and
Punctuation are available. The information entered will be displayed in the INFO screen. Entry is accomplished
by scrolling through the alphanumeric list with the ▲ (forward →) and ▼ (backwards ←) arrows to the
character of choice and then pressing NEXT to advance the cursor to the next digit. Pressing and holding the ▲
or ▼ keys will initiate two speed auto scrolling. Press BACK to exit the screen.

Location: CONFIG → XMTR → LCD → LABELS → SENSOR

3.4.6 PASSWORD PROTECTION

PASSWD Enter 4 character password to protect access to MENU Level, CAL Menu, CONFIG Menu and SIM Menu
(simulate). Each level can be turned ON or OFF and can have a unique password. Upper Case Characters and
Numbers are available for use.

Place the cursor in front of the level to be changed and Press OK. Move the cursor to
ON and press OK to change the password status from OFF to ON.

Entry is accomplished by scrolling through the alphanumeric list with the ▲ (forward
→) and ▼ (backwards ←) arrows to the character of choice and then pressing NEXT
to advance the cursor to the next digit. Pressing and holding the ▲ or ▼ keys will
initiate two speed auto scrolling.

o MENU ON/OFF _ _ _ _ Locks Main Menu
o CAL ON/OFF _ _ _ _ Locks CAL and

CONFIG

o CONFIG ON/OFF _ _ _ _ Locks CONFIG
o SIM ON/OFF _ _ _ _ Locks SIM and CONFIG

In the case of a Lost or Forgotten password enter MSTR to access the screen.

Location: CONFIG → XMTR → PSSWD

30

4.0 CALIBRATION

The Model T80 transmitter provides three methods of calibration:

4.0.1 AUTO CALIBRATION DESCRIPTION

Auto calibration is the primary calibration method for all measurements. AUTO calibration automatically
recognizes the calibration solution the sensor is in and proposes the actual temperature compensated value for
acceptance. AUTO calibration can be a single point or two point calibration. A single point calibration sets the
zero point or offset value of the sensor. The second calibration sets the slope or span of the sensor.

When the AUTO key is pressed the transmitter displays the PV (Process Variable)
and the associated mV signal from the sensor. When the reading has stabilized a
calibration value is AUTOmatically proposed, i.e. 7.00 pH, 10 ppm Fluoride ion, 0.00
mg/L Dissolved Oxygen. The user is prompted to accept the proposed calibration
value or enter and accept another value. Once Cal 1 is accepted the user is ask to
continue to Cal 2, yes/no. If yes, then a second calibration value is proposed when the sensor has stabilized in
the second calibration solution. Accept the value and the calibration is complete.

At the end of each calibration the Offset and Slope are displayed in the respective units, pH, mV, ppm, mg/l.

4.0.2 STANDARDIZE CALIBRATION DESCRIPTION

A Standardize Calibration is a single point calibration where the transmitter’s
reading is adjusted to agree with a solution of known value, either a calibration
standard, a grab sample or laboratory determined value. In many cases the
constituents and the pressure and temperature of the process solution are very
different from the calibration solution. In these cases, once the sensor has
equilibrated, the Zero Point or Offset value may have shifted from the original calibration point. Standardization
allows for correction of this type of offset.

When the STAND key is pressed, the user is prompted to ENTER VALUE. The user enters the value they want the
transmitter to read and press OK. The user is then prompted to accept the value, yes/no, and the calibration is
complete. Standardizations are single point calibrations.

At the end of each calibration the Offset and Slope are displayed in the respective units, pH, mV, ppm, mg/l.

4.0.3 MANUAL CALIBRATION DESCRIPTION

Manual calibration allows the user to enter calibration data for an electrode into the transmitter without
performing a calibration. A MANUAL Calibration requires the entry of three pieces of
data, (1) A concentration with the (2) corresponding mV value and (3) a slope for
the electrode. This allows laboratory generated calibration data for an electrode to
be entered in a remote analyzer where calibration is difficult or impractical.

Example: MANUAL Calibration for a pH electrode

1. Calibrate the pH electrode in the laboratory

2. Record the mV value of some pH Standard, pH 7.00 buffer = 6.8 mV (any pH

– mV pair will work)

Page 31 Model T80

3. Calculate and Record the slope of the electrode, 58.2 mV/pH

4. Install the electrode into the field mounted sensor

5. Press MANUAL and enter the pH value, 7.00 pH, press mV and enter the

corresponding mV value, 6.8 mV, press OK, Accept Offset?, press YES, enter
slope 58.2 mV/pH, press OK, Accept Slope?, Press YES

6. The Calibration is complete, the Offset and Slope values are displayed, press

OK to exit.

32

4.1 PH CALIBRATION PROCEDURES

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)

Press Yes/NO

Place Sensor in CAL Solution ( use pH 7.00 buffer)

Press AUTO then CAL 1

STABILIZING, 7.00 pH x.x mV, 7.00 pH corrected Accept Cal 1?

Press YES

CAL1 Value 7.00 pH, Continue to CAL2? Move sensor to 4.01 pH buffer solution

Press YES

STABILIZING, 4.00 pH xxx.x mV, 4.00 pH corrected Accept Cal?

Press YES

OFFSET: 7.00 pH x.x mV, SLOPE: 59.16 mV/pH (data written to Log)

Press OK

Calibration complete

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)

Press YES/NO

Place Sensor in CAL Solution

Press AUTO then CAL 1

STABILIZING, xx.xx pH x.x mV, 7.00 pH corrected Accept Cal?

Press NO

Enter CAL 1 Value

Press ▲ ▼ NEXT

xx.xx pH (use arrows and NEXT to enter pH Buffer value)

Press OK

xx.xx pH, xxx.x mV, Accept this Value

Press YES

CAL 1 Value xx.xx pH, Continue to CAL 2? (Place Sensor in 2nd calibration buffer)

Press YES

STABILIZING, xx.xx pH xxx.x mV, 4.00 pH corrected Accept Cal?

Press NO

Enter CAL 2 Value

Press ▲ ▼ NEXT

xx.xx pH (use arrows and NEXT to enter pH Buffer value)

Press OK

xx.xx pH, xxx.x mV, Accept this Value

Press YES

OFFSET: xx.xx pH x.x mV, SLOPE: 59.16 mV/pH (data written to Log)

Press OK

Calibration complete

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

AUTO Calibration recognizes pH 4.01, pH 7.00 and pH 10.00 buffer solutions for automatic, temperature
compensated calibrations. Any calibration solutions can be used but the pH value will have to be entered
manually. Follow the steps below to accomplish a pH calibration. Example uses pH 7.00 and pH 4.01 buffers.

4.1.1 AUTO CAL USING PH 4.01, 7.00, 10.00 BUFFERS

4.1.2 AUTO CAL USING OTHER PH BUFFERS

4.1.3 STANDARDIZE

Leave the sensor in the process solution, take a grab sample from the process and determine the pH or place
sensor in a calibration standard solution.

Page 33 Model T80

Press CAL

Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)

Press NO

Place Sensor in CAL Solution (or leave in the process solution)

Press STAND

Enter Value

Press ▲ ▼ NEXT

xx.xx pH (use arrows and NEXT to enter process pH value)

Press OK

xx.xx pH, xxx.x mV, Accept Value?

Press YES

OFFSET: xx.xx pH x.x mV, SLOPE: xx.xx mV/pH (this data written to Log)

Press OK

Back to Cal Menu

Press HOME

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

4.2 ORP CALIBRATION PROCEDURES

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)

Press Yes/NO

Place Sensor in CAL Solution ( use pH 7.00 Q solution)

Press AUTO then CAL 1

STABILIZING, xxx.x mV, xxx.x mVa, 90.0 mV corrected Accept Cal?

Press YES

CAL1 Value 90.0 mV, Continue to CAL2? Move sensor to pH 4.01 Q solution

Press YES

STABILIZING, 269.2 mV 267.0 mVa, 267 mV corrected Accept Cal?

Press YES

OFFSET: 90.0 mVa, 87 mV, SLOPE: 1.02 mV/ mVa (data written to Log)

Press OK

Calibration complete

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)

Press NO

Place Sensor in CAL Solution (or leave in the process solution)

Press STAND

Enter Value

Press ▲ ▼ NEXT

xx.xx mV (use arrows and NEXT to enter process ORP value)

Press OK

xxx.x mV, xxx.x mV, Accept Value?

Press YES

OFFSET: xxx.x mV xxx.x mV, SLOPE: xx.xx mV/mV (this data written to Log)

Press OK

Back to Cal Menu

Press HOME

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

AUTO Calibration recognizes Quinhydrone solutions (mVa), pH 7.00 quinhydrone solution (90 mV) and pH 4.01
quinhydrone solution (267 mV) for automatic ORP calibrations. Any calibration solutions can be used but the
ORP value will have to be entered manually. Follow the steps below to accomplish an ORP calibration.

4.2.1 AUTO CAL WITH QUINHYDRONE

4.1.2 STANDARDIZE

Leave the sensor in the process solution, take a grab sample from the process and determine the ORP.

34

4.3 PION CALIBRATION PROCEDURES

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)

Press Yes/NO

Place Sensor in CAL Solution ( use 10 ppm solution)

Press AUTO then CAL 1

STABILIZING, 10.00 ppm, xxx.x mV, 10.00 ppm corrected, Accept Cal?

Press YES/NO

CAL1 Value 10.00 ppm, Continue to CAL2? Move sensor to 100 ppm solution

Press YES

STABILIZING, 100.0 ppm, xx.xx mV, 100 ppm corrected, Accept Cal?

Press YES

OFFSET: 10.00 ppm, 310 mV, SLOPE: 55.1 mV/ decade (data written to Log)

Press OK

Calibration complete

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)

Press YES/NO

Place Sensor in CAL Solution

Press AUTO then CAL 1

STABILIZING, xx.xx pH x.x mV, 10.00 ppm corrected Accept Cal?

Press NO

Enter CAL 1 Value

Press ▲ ▼ NEXT

xxxx.x ppm (use arrows and NEXT keys to enter Cal value)

Press OK

xxxx.x ppm, xxx.x mV, Accept this Value

Press YES

CAL 1 Value xxxx.x ppm, Continue to CAL 2? (Place Sensor in 2nd calibration
solution)

Press YES

STABILIZING, xxxx.x ppm xxx.x mV, xxx.x ppm corrected Accept Cal 2?

Press NO

Enter CAL 2 Value

Press ▲ ▼ NEXT

xxxx.x ppm (use arrows and NEXT keys to enter Cal value)

Press OK

xxxx.x ppm, xxx.x mV, xxx.x ppm corrected Accept Cal 2?

Press YES

OFFSET: xxxx.x ppm xxx.x mV, SLOPE: 55.40mV/decade (data written to Log)

Press OK

Calibration complete

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

AUTO Calibration recognizes 1, 10 or 100 ppm/ppb calibration solutions. Any calibration solutions can be used
but the ppm value will have to be entered manually. Follow the steps below to accomplish a pION calibration.

4.3.1 AUTO CAL USING 1, 10, 100 PPM SOLUTIONS

4.3.2 AUTO CAL USING NON-DECIMAL PPM SOLUTIONS

4.3.3 STANDARDIZE

Leave the sensor in the process solution, take a grab sample from the process and determine the Ion
concentration.

Page 35 Model T80

Press CAL

Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)

Press NO

Place Sensor in CAL Solution (or leave in the process solution)

Press STAND

Enter Value

Press ▲ ▼ NEXT

xxxx.x ppm (use arrows and NEXT to enter process Ion ppm value)

Press OK

xxxx.x ppm, xxx.x mV, Accept Value?

Press YES

OFFSET: xxxx.x ppm xxx.x mV, SLOPE: xx.xx mV/DEC (this data written to Log)

Press OK

Back to Cal Menu

Press HOME

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

Temperature

°C (°F)

Saturation

mg/L

Temperature

°C (°F)

Saturation

mg/L

Temperature

°C (°F)

Saturation

mg/L

0 (32)

14.64

14 (57)

10.28

28 (82)

7.82

4.4 S80/DO90 DISSOLVED OXYGEN CALIBRATION PROCEDURES

There are two separate calibration procedures for Dissolved Oxygen sensors, Section 4.4 for S80 DO and DO90
ppb DO and Section 4.5 for TRITON® DO80 Optical.

The dissolved oxygen AUTO Cal acknowledges zero ppm, mg/l, % SAT for CAL 1 and the temperature
compensated value for atmospheric oxygen, 8.25 ppm, mg/l at 25°C or 100 % SAT for CAL 2.

The zero point is set by placing the sensor into an oxygen free solution and verifying the displayed value drops to
a value below 1 mV. The sensor will take a few minutes to equilibrate to the zero oxygen solution but for the
highest accuracy it is best to wait 15-20 minutes before initiating a calibration. The typical sensor will burn down
to 0.5 – 0.7 mV in an hour or so in a zero ppm solution. A zero ppm O2 solution can be made by adding
approximately 5 grams of sodium sulfite to a liter of distilled water or purging the sample with nitrogen gas.

The slope (CAL 2) is set by placing the sensor in air saturated distilled water or water saturated (100% humidity)
air. The easiest method is to suspend the sensor vertically in beaker with a ½” of water in the bottom slightly
above the water.

A STANDardize calibration adjusts the CAL 2 value, resetting the slope of the sensor, mV/ppm.

The actual concentration in mg/L (C) is equal to the Saturation value at the given temperature multiplied by the
altitude and air pressure corrections. Determine the calibration temperature and look up the saturation value
(S) in Table 1 below. Then determine the altitude correction (K) from Table 2 and the current air pressure in bar
(P), 1 bar equals 14.7 psi. Use 1 bar if the actual air pressure is unknown.

C = S x K x P

Example:

Temperature = 20°C → Saturation = 9.08 mg/L, Altitude = 1200 ft → K = 0.960, Air Pressure 1.014 bar

C = 9.08 x 0.960 x 1.014 = 8.84 mg/L

The T80 transmitter uses the temperature compensated Saturation Index for AUTO Cal, however the user can
enter the altitude and pressure compensated value of 8.84 ppm as the calibration value when prompted to
“Accept Value?” in CAL 2.

Table 1 Saturation Index

36

1 (34)

14.23

15 (59)

10.06

29 (84)

7.69

2 (36)

13.83

16 (61)

9.85

30 (86)

7.55

3 (38)

13.45

17 (63)

9.64

31 (88)

7.42

4 (39)

13.09

18 (64)

9.45

32 (90)

7.30

5 (41)

12.75

19 (66)

9.26

33 (91)

7.18

6 (43)

12.42

20 (68)

9.08

34 (93)

7.06

7 (45)

12.11

21 (70)

8.90

35 (95)

6.94

8 (46)

11.81

22 (72)

8.73

36 (97)

6.83

9 (48)

11.53

23 (73)

8.57

37 (99)

6.72

10 (50)

11.25

24 (75)

8.41

38 (100)

6.61

11 (52)

10.99

25 (77)

8.25

39 (102)

6.51

12 (54)

10.75

26 (79)

8.11

40 (104)

6.41

13 (55)

10.51

27 (81)

7.96

Table 2 Altitude Correction

Altitude

m (ft)

K

Altitude

m (ft)

K

Altitude

m (ft)

K

Sea Level 0

1.000

700 (2300)

0.922

1400 (4600)

0.849

50 (160)

0.994

750 (2450)

0.916

1450 (4750)

0.844

100 (330)

0.988

800 (2600)

0.911

1500 (4900)

0.839

150 (500)

0.982

850 (2800)

0.905

1550 (5100)

0.834

200 (660)

0.977

900 (2950)

0.900

1600 (5250)

0.830

250 (820)

0.971

950 (3100)

0.895

1650 (5400)

0.825

300 (980)

0.966

1000 (3300)

0.890

1700 (5600)

0.820

350 (1200)

0.960

1050 (3450)

0.885

1750 (5750)

0.815

400 (1300)

0.954

1100 (3600)

0.879

1800 (5900)

0.810

450 (1500)

0.949

1150 (3775)

0.874

1850 (6050)

0.805

500 (1650)

0.943

1200 (3950)

0.869

1900 (6200)

0.801

550 (1800)

0.938

1250 (4100)

0.864

1950 (6375)

0.796

600 (2000)

0.932

1300 (4250)

0.859

2000 (6550)

0.792

650 (2150)

0.927

1350 (4400)

0.854

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)

Press Yes/NO

Place Sensor in CAL 1 Solution ( use 0.00 ppm solution) or CAL 2 Solution (Air)

To perform zero CAL press CAL 1, to skip zero cal press CAL 2

Press AUTO then CAL ?

STABILIZING, 0.00 ppm, xxx.x mV, 0.00 ppm corrected, Accept Cal?

Press YES

CAL 1 Value 0.00 ppm, Continue to CAL2? Move sensor to Air or saturated water

Press YES

STABILIZING, 8.25 ppm, xxx.x mV, 8.25 ppm corrected, Accept Cal?

Press YES

OFFSET: 0.00 ppm, 2.3 mV, SLOPE: 40.1 mV/ ppm (data written to Log)

Press OK

Calibration complete

4.4.1 AUTO CAL USING ZERO PPM SOLUTION AND AIR

The dissolved oxygen sensors are calibrated at the factory before shipment and should read correctly when
installed in the process solution. Low level ppb measurements may not stabilize for 48 hours in a low ppb
environment. The internal electrolyte and lead anode will stabilize to the 0.1 ppm level in a couple of hours but
they will continue to diminish the internal background voltage for two days after which time ppb level
measurements are possible.

Page 37 Model T80

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Main Display

4.4.2 STANDARDIZE

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)

Press NO

Place Sensor in Air or the process solution

Press STAND

Enter Value

Press ▲ ▼ NEXT

xxx.xx ppm or % SAT (use arrows and NEXT to enter process value)

Press OK

xxx.xx ppm, xxx.x mV, Accept Value?

Press YES

OFFSET: 0.00 ppm xx.x mV, SLOPE: xx.xx mV/ppm (this data written to Log)

Press OK

Back to Cal Menu

Press HOME

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)

Press NO

Place Sensor in Air or the process solution, it doesn’t matter which

Press MANUAL

Enter Zero Value

Press ▲ ▼ NEXT

000.00 ppm or % SAT (use arrows and NEXT to enter ppm value)

Press mV Button

Enter mV value for zero ppm solution (default use 0.5 mV)

Press ▲ ▼ NEXT

000.00 mV (use arrows and NEXT to enter mV value)

Press OK

OFFSET: 0.00 ppm 00.5 mV, Accept Value?

Press YES

Slope 000.0 mV/ppm or 000.0 mV/% SAT

Press ▲ ▼ NEXT

048.00 mV/ppm (use calculated value or 45 mV/ppm or 4.0 mV/% SAT)

Press OK

Slope 48.00 mV/ppm, Accept this Value?

Press YES

Back to Cal Menu

Press HOME

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

Leave the sensor in the process solution or in the air, take a grab sample from the process and determine the
dissolved oxygen concentration or enter the temperature and pressure corrected value for air.

4.4.3 MANUAL CAL

Leave the sensor in the process solution or in the air, take a grab sample from the process and determine the
dissolved oxygen concentration or enter the temperature and pressure corrected value for air.

38

4.5 TRITON® DISSOLVED OXYGEN CALIBRATION PROCEDURES

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Place Sensor in Zero Solution (0.00 ppm solution) (Optional Zero Cal)

Press AUTO(Optional)

CALIBRATING, SAVING CAL, AUTO CAL COMPLETE, OK? (up to 10 minutes)

Press OK (Optional)

AIR CALIBRATION

Move sensor to Air (100% humidity) or Air saturated water

Press AUTO

CALIBRATING, SAVING CAL, AUTO CAL COMPLETE, OK?

Press OK

Returned to Cal Menu

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Main Display

Before starting a calibration Enter the Salinity and Barometric pressure in the CONFIG→SENSOR menu. The

default values are Salinity 0% and 1013 mbar. Use Table 2 above to calculate the pressure using elevation if the
actual pressure is not known.

The TRITON® DO80 sensor was calibrated at the factory prior to shipment and should not require a re­calibration at start up. Calibration is required whenever the fluorescence cap/membrane cap is replaced.
Calibrations can be performed as a one point (Air cal), a two point (zero point & Air cal) or a standardization,
there is no Manual Cal option available for the TRITON® dissolve oxygen sensors.

The Auto Cal allows both 0% and100% calibrations. The sensor senses the oxygen partial pressure and if it is less
than 20% of saturation it assumes a Zero Point calibration and calibrates to 0.00% saturation, 0.00 mg/l or 0.00
mbar depending on the measurement mode. If the sensed value is above 75% of saturation it assumes an Air
Calibration and calibrates to the value equivalent to 100% saturation.

The zero point of the sensor is relatively stable through the life of the fluorescence/membrane cap. The zero
point is checked by placing the sensor into an oxygen free solution and verifying the displayed value drops to a
value near zero ppm. The sensor will take a few minutes to equilibrate to the zero oxygen solution but it is best
to wait 15-20 minutes before initiating a calibration (up to a 10 minute cycle time) for the highest accuracy. A
zero ppm O2 solution can be made by adding approximately 5 grams of sodium sulfite to a liter of distilled water
or purging the sample with nitrogen gas.

Air saturated water and water saturated air (100% humidity) have the same oxygen partial pressure. The
preferred calibration method uses water saturated air. The Protective Guard can be removed from the front of
the sensor and filled a small amount of distilled water, ~5 ml, for an easy to use Calibration Cap.

The calibration cycle takes up to 10 minutes once initiated. The DO80 sensor should be equilibrated for 10-15
minutes to the air sample (100% humidity, 0% Salinity) and the ambient temperature before starting the
calibration. When measuring in the “% Saturation mode”, 100% will be reported as the calibration value.

4.5.1 AUTO CAL USING ZERO PPM SOLUTION AND AIR

Page 39 Model T80

4.5.2 STANDARDIZE

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Place Sensor in Air or with the sensor in the process solution

Press STAND

Enter Value

Press ▲ ▼ NEXT

xx.xx ppm or % SAT (use arrows and NEXT to enter process value)

Press OK

xx.xx ppm, Accept Value?

Press YES

CALIBRATING, SAVING CAL, CURRENT VALUE: x.xx ppm, DESIRED VALUE: x.xx
ppm, OFFSET xxx ppb or ppm

Press OK

Back to Cal Menu

Press HOME

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

Leave the sensor in the process solution or in the air, take a grab sample from the process and determine the
dissolved oxygen concentration or enter the temperature and pressure corrected value for air.

4.6 TRITON® TR6 TURBIDITY/SUSPENDED SOLIDS SENSOR

The TRITON® TR6 turbidity sensors are dual range sensors available in four different ranges. The TR6 turbidity
sensors have a non-linear output. The calculation of the turbidity is accomplished using a 2nd order polynomial of
the millivolt output, NTU = ax2 + bx + c, where x = millivolt output of the sensor. A three point calibration is
required to define the shape of the curve. The Model T80 turbidity analyzer was calibrated at the factory before
shipment in three Formazine solutions using the values listed below. The calibration was performed with the
three solutions specific for the NTU range of the sensor ordered.

Changing the range of the sensor (Hi to Low or Low to Hi) or changing the measurement unit will require a new
three point calibration. The calibration points for the three point calibration are 0%, 50% and 100% of the
measurement range, NTU, FNU, ppm, mg/L or % Solids. Calibrations of NTU or FNU can be made with formazine
solutions diluted from the 4000 NTU stock solution to the values listed in the table below. Calibrations of ppm,
mg/L, and % Solids require the actual process solutions to be used for the calibration. The 100% solution for the
ppm, mg/L and % solids should be near the high point of the measurement, it does not need to be the maximum
value but it should be in the upper range of the measurement. The value of the solution must be known or
determined by another method such as a grab sample and laboratory measurement. Then make the 50%
solution from 1 part of the high sample to one part deionized water, its value is half of the high value and finally
use deionized water for the 0% solution.

Calibrations should be performed in a vessel with similar characteristics to the actual process installation. Black
plastic containers work best, minimizing reflectance problems in lower NTU solutions. ECD offers a TRITON® TR6
Turbidity Calibration Kit that includes a TR6 Calibration Cup, 250 ml, 100 ml and 50 ml graduated cylinders and a
1 liter volumetric flask. The kit provides the necessary laboratory equipment to make calibration standards from
a 4000 NTU formazine stock solution and an easy to use calibration cup. This kit is ideal for calibration of inline
pipe mounted TR6 turbidity sensors.

Example of a mg/L Calibration: The process solution ranges around 3000 mg/L. A 2 liter sample was taken from
the process and tested, it was determined to be 2850 mg/L. Keep one liter of the 2850 mg/L solution for the
(100%) solution calibration and mix 500 mls of the 100% solution with 500 mls of deionized water, making the

40

(50%) solution, 1425 mg/L and one liter of deionized water (0%). Start the calibration in the deionized water in

Sensor Measurement Ranges

Low Calibration Values

High Calibration Values

0-250 NTU and 0-1000 NTU

0 NTU, 125 NTU, 250 NTU

0 NTU, 500 NTU, 1000 NTU

0-500 NTU and 0-2000 NTU

0 NTU, 250 NTU, 500 NTU

0 NTU, 1000 NTU, 2000 NTU

0-1000 NTU and 0-4000 NTU

0 NTU, 500 NTU, 1000 NTU

0 NTU, 2000 NTU, 4000 NTU

0-2000 NTU and 0-4000 NTU

0 NTU, 1000 NTU, 2000 NTU

0 NTU, 2000 NTU, 4000 NTU

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)

Press YES/NO

Place Sensor in 0.00 NTU (or FNU, mg/L, ppm, % Solids)CAL Solution

Press AUTO (CAL 1)

STABILIZING, xx.xx NTU x.xx V, 0.00 NTU corrected Accept Cal 1?

Press YES

Place sensor in 50 % solution

STABILIZING, 492.0 NTU 1.18V, 500.0 ppm corrected, Accept Cal 2?

Press YES/NO

If suggested corrected value is not correct press NO, Enter CAL 2 Value

Press ▲ ▼ NEXT

xxxx.x NTU (use arrows and NEXT keys to enter Cal value)

Press OK

xxxx.x NTU, xxx.x V, 500.0 NTU corrected Accept Cal 2?

Press YES

Place sensor in 100% solution

STABILIZING, 1000 NTU 2.46V, 1000.0 ppm corrected, Accept Cal 3?

Press YES/NO

If suggested corrected value is not correct press NO, Enter CAL 3 Value

Press ▲ ▼ NEXT

xxxx.x NTU (use arrows and NEXT keys to enter Cal value)

Press OK

1000 NTU, 2.46 V, 1000.0 NTU corrected Accept Cal 3?

Press OK

Calibration complete, returns to Cal Menu

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Place Sensor in Air or with the sensor in the process solution

the calibration cup and accept 0.00 mg/L when prompted, then put the sensor into the 1425 mg/L solution and
enter 1425 mg/L when prompted and finally into the 2850 mg/L solution and enter 2850 mg/L. Accept the
calibration and put the sensor back into the process.

4.6.1 AUTO CAL

The TRITON® TR6 turbidity sensors use a three point AUTO Cal sequence. Cal 1 is a zero point calibration, Cal 2 is
a 50% of the measured range calibration and Cal 3 is a 100% of range calibration.

4.6.2 STANDARDIZE

Standardize is an online/in process Zero Point Calibration Only. To change a non-zero value to a new value use
the Slope feature in the Manual Cal section. (see below) Standardize is used to zero out the reflectance effects
generated by the installation. The sensor will generate a mV signal in a zero NTU environment and this will be
different than the zero point value recorded in the AUTO Cal. Standardize shifts the calibration curve to the new
zero value. Perform a Standardize calibration with the sensor installed in the process line or tank and immersed
in clear water only.

Page 41 Model T80

Press STAND

Enter Zero Value

Press ▲ ▼ NEXT

0.00 NTU or ppm, mg/L, % Solids (use arrows and NEXT to enter process value)

Press OK

0.00 NTU, Accept Value?

Press YES

Stand Cal Complete: 8.61 NTU, DESIRED VALUE: 0.00 NTU, OFFSET 8.61 NTU

Press OK

Back to Cal Menu

Press HOME

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

4.6.3 MANUAL CAL

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Place Sensor in Air or with the sensor in the process solution

Press MANUAL

OFFSET or SLOPE

Press SLOPE

Enter SLOPE Value108.00

Press ▲ ▼ NEXT

113.7 (use arrows and NEXT to enter process value)

Press OK

113.7 Accept Value?

Press YES

Manual Cal Complete: OFFSET 8.61 NTU, SLOPE 113.7

Press OK

Back to Cal Menu

Press HOME

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)

Manual Cal provides two options, OFFSET and SLOPE. OFFSET is an online/in process Zero Point Calibration
Only. It is the same value that is adjusted in Standardize and it is the set same way. SLOPE is an adjustment of
the NTU/volt aspect of the turbidity curve pivoting from the Offset point. The SLOPE window displays a unit less
number that is changed to adjust the calibration.

Example: TRITON® TR6 in 400 NTU solution but reads 380 NTU. The SLOPE reads 108. The slope of the
calibration curve needs to increase so that the voltage that is generating 380 NTU will generate 400NTU. To
determine the new slope, first divide the desired value (400 NTU) by the actual value (380 NTU) and multiply the
current slope by that number. 400 NTU/380 NTU * 108 = 113.7 the new slope. Enter 113.7 in the SLOPE window,
Save the calibration and the analyzer will read 400 NTU.

SLOPE ADJUSTMENT

4.7 CONDUCTIVITY SENSORS

AUTO Calibration recognizes Air for zero point (Cal 1) and 50µS, 100µS, 500µS, 1mS, 5mS, 10mS, 50mS and
100mS solutions for the span (Cal 2). Any calibration solutions can be used but the conductivity value will have
to be entered manually. Use a calibration standard near the conductivity of the process solution. Example uses
air and 1mS.

4.7.1 AUTO CAL USING AIR AND CONDUCTIVITY STANDARD

42

Press Yes/NO

Remove the Sensor from Solution and dry the front end, Air = 0.00 µS

To perform zero CAL press CAL 1, to skip zero cal press CAL 2, only if a zero cal was previously done on the sensor

Press AUTO then CAL 1

STABILIZING, 0.00 µS, 1.17 V, 0.00 µS corrected, Accept Cal?

Press YES

CAL 1 Value 0.00 µS, Continue to CAL2? Move sensor to 1.00 mS solution

Press YES

STABILIZING, 1.00 mS, 98X.X mV, 1.000 µS corrected, Accept Cal?

Press YES

OFFSET: 0.00 ppm, 174.4 mV, SLOPE: 984 (data written to Log)

Press OK

Calibration complete

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Main Display

4.7.2 STANDARDIZE

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)

Press NO

With the sensor in the process solution

Press STAND

Enter the laboratory determined conductivity value

Press ▲ ▼ NEXT

xxx.xx µS/mS (use arrows and NEXT to enter process value)

Press OK

xxx.xx µS/mS, xxx.x mV, Accept Value?

Press YES

OFFSET: 0.00 µS 1.0 mV, SLOPE: xx.xx mV/ppm (this data written to Log)

Press OK

Back to Cal Menu

Press HOME

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

With the sensor in the process solution, take a grab sample from the process and determine the conductivity
using a qualified laboratory conductivity meter.

4.8 TDS CONDUCTIVITY SENSORS

The Total Dissolved Solids measurement (TDS) on the Model T80 transmitter is made with an S80 conductivity
sensor and a correlation factor. (Conductivity in µS x correlation factor = ppm)

Conductivity is a measurement of a solution’s electrolytic conductivity, 1/ohms. The type of dissolved ions in the
solution is irrelevant to the measurement. TDS is a measurement of concentration, ppm (mg/L). Since different
salts contribute different amounts of conductivity to a solution, TDS measurements are only valid between
solutions of the same chemical makeup. As an example, 1000 ppm of TDS in natural waters has a conductivity
around 1400 µS (correlation factor 0.6712), 1000 ppm of KCl has a conductivity around 2000 µS (correlation
factor 0.5000) and 1000 ppm of NaOH has a conductivity around 6000 µS (correlation factor 0.1667). All three
solutions have a TDS of 1000 ppm but the conductivities are 1400 µS, 2000 µS and 6000 µS. A TDS measurement
is only valid for a solution with the same chemical make up as the solution used for calibration.

Calibration is accomplished in two steps; Step 1 Conductivity AUTO Calibration of the sensor (see section 4.7.1
above) and then Step 2 correlation of conductivity to the TDS. The second step can be done by entering the
correlation factor into the CONFIG →SENSOR→ TDS menu or by standardizing the sensor in a solution of known
TDS in the CAL→STAND menu by entering the TDS value. Since the correlation of conductivity to concentration is
not linear it is best to calibrate the sensor near the measured value.

Page 43 Model T80

4.8.1 STANDARDIZE

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)

Press NO

With the sensor in the process solution or calibration standard

Press STAND

Enter the laboratory determined TDS value

Press ▲ ▼ NEXT

xxx.xx ppm (use arrows and NEXT to enter process value)

Press OK

xxx.xx ppm, xxx.x mV, Accept Value?

Press YES

Current value: xx.xx ppm, Desired value: xx.xx ppm, Offset: xx.xx ppm

Press OK

Back to Cal Menu

Press HOME

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)

Press Yes/NO

Remove the Sensor from Solution and dry the front end

To perform zero CAL press CAL 1, to skip zero cal press CAL 2, only if a zero cal was previously done on the sensor

Press AUTO then CAL 1

STABILIZING, 55.000 MΩ, 1.20 V, 55.000 MΩ corrected, Accept Cal?

Press YES

CAL 1 Value 55.000 MΩ, Continue to CAL2? Move sensor to MΩ solution

Press YES

STABILIZING, 9.875 MΩ, 517 mV, 9.875 MΩ corrected, Accept Cal?

Press NO

Enter actual MΩ value of the solution, Accept Cal

Press YES

OFFSET: 55.000 MΩ, 1.20 V , SLOPE: 0.938 (data written to Log)

Press OK

Calibration complete

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)

With the sensor in the process solution, take a grab sample from the process and determine the TDS using a
qualified laboratory method.

4.9 RESISTIVITY SENSORS

AUTO Calibration recognizes Air for zero point (Cal 1) and a Meg-Ohm process solution for the span (Cal 2). Use
the actual process solution or a solution near the resistivity of the process solution. The example below uses air
and 15 MΩ. The Cal 1, air calibration value is very stable and need not be done for every calibration.

4.9.1 AUTO CAL USING AIR AND MEG-OHM PROCESS WATER

4.9.2 STANDARDIZE

With the sensor in the process solution, take a grab sample from the process and determine the conductivity
using a qualified laboratory conductivity meter.

44

Press NO

With the sensor in the process solution

Press STAND

Enter the laboratory determined conductivity value

Press ▲ ▼ NEXT

xxx.xx MΩ (use arrows and NEXT to enter process value)

Press OK

Current Value xx.xx MΩ, Desired Value: xx.xx MΩ, Offset XX.XX OK?

Press OK

Back to Cal Menu

Press Home

Hold is ON (Press HOLD to turn off Hold)

Press HOLD

Turn off Hold

Press EXIT

Main Display

Action

Prompt

Double Press any Button

MENU HOME, Hold is OFF

Press HOLD

Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration

Press CAL

Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)

Press Yes/NO

Remove the Sensor from Solution and dry the front end, Air = 0.00 µS

To perform zero CAL press CAL 1, to skip zero CAL press CAL 2, only if a zero CAL was previously done on the sensor

Press AUTO then CAL 1

STABILIZING, 0.00 µS, 1.17 V, 0.00 µS corrected, Accept Cal?

Press YES

CAL 1 Value 0.00 µS, Continue to CAL2? Move sensor to 42.91 mS solution

Press YES

STABILIZING, 53.64 mS, 200.0 mV, 50.00 mS corrected value, Accept Cal?

Press NO

Enter the temperature corrected value

Press ▲ ▼ NEXT

42.91 mS or Temperature Corrected value (use arrows and NEXT to enter process
value)

Press OK

42.91 mS, 200.0 mV, Accept Value?

Press OK

OFFSET: 0.00 ppm, 1.17 V, SLOPE: 784 (data written to Log)

Press OK

Calibration complete

Press HOME

Hold is ON

Press HOLD

Turn off Hold

Press EXIT

Home Screen 35.0 PSU

4.10 SALINITY (PRACTICAL SALINITY SCALE)
Practical Salinity, symbol S, of a sample of seawater, is defined in terms of the ratio K15 of the electrical
conductivity of the seawater sample at the temperature of 15°C and the pressure of one standard atmosphere,
to that of a potassium chloride (KCl) solution, in which the mass fraction of KCl is 32.4356g per kg of solution, at
the same temperature (15°C) and pressure (1 atm). The K15 value exactly equal to 1 corresponds, by definition, to
a practical salinity exactly equal to 35. The conductivity of 32.4356g of KCl per kg of solution is 42.914 mS at 15°C
and 53.64 mS at 25°C.

Calibration of the conductivity sensor is slightly different than a standard S80 conductivity calibration. Most
calibrations are referenced to the value at 25°C, this calibration is referenced to the conductivity value at 15°C.
Since the temperature correction for conductivity is 2% / °C, the calibration solution value is 80% of the standard
value at 25°C, 50 mS @25°C solution is entered as 40 mS.

2%/°C x (25°C - 15°C) = 20% correction so 50 mS x 0.80 = 40 mS

Use the PSU Calibration solution 42.914 mS (PN 2010086) or use another Conductivity Standard and correct the
value to the value at 15°C.

Page 45 Model T80

5.0 MAINTENANCE

No periodic maintenance is required for the ECD Model T80 Transmitter.

When you open the front cover and/or cable glands, make sure that the seals are clean and correctly fitted
when the unit is re-assembled in order to maintain the housing’s NEMA 4X weatherproof integrity against water
and water vapor.

Fuse: There is a circuit board mounted fuse protecting the instrument. If you suspect that this needs to be
replaced, contact the ECD service center for parts and instructions.

5.1 CLEANING

The Model T80 transmitter requires no periodic maintenance, except to make sure the front window is kept
clean in order to permit a clear view of the display and allow proper operation of the navigation buttons. If the
window becomes soiled, clean it using a soft damp cloth or soft tissue. To deal with more stubborn stains, a
neutral detergent or spray cleaner like Windex may be used. Never use harsh chemicals or solvents.

46

6.0 TROUBLESHOOTING

Symptom

Probable cause

Remedy

Blank Display

No Power

Sensor Failure, causing power draw
down below transmitter threshold

Check power source, 24VDC loop,
24VDC, 110/220VAC

Unplug sensor from transmitter,
replace sensor if instrument
powers up.

Incorrect Readings

Sensor needs calibration

Incorrect Temperature
measurement

Temperature Compensation set up
incorrectly

Perform a standardization
calibration. See INFO for calibration
log
Calibrate/Trim Temperature to
correct value

Verify: 0.33% for pH, pIon

0.00% for ORP

4.0% for DO

“Looking For Sensor” prompt

Lost connection between sensor
and transmitter

Check sensor connection to
transmitter, loose connector?
Visually inspect cable for cuts or
crushed areas, replace sensor if
cable is compromised

Page 47 Model T80

7.0 PARTS AND ACCESSORIES

Item #

Part #

Description

1

9630005

Spring, Mounting Screw Set

2

9870621

Retaining Washer, Mounting Screw Set

3

3600390

8-32 x 1” SS Screw, Mounting Screw Set

4

3400152

Front Housing

5

9560005

Sealing O-ring, grey silicone

6

9240503-1

Touch pad membrane

7

2101800-1

PCB, Control Board, Loop Powered

7

2101800-2

PCB, Control Board, Loop Powered, Relays

7

2101800-3

PCB, Control Board, Loop Powered, HART

8

9870650

Locking Washer, PCB Screw Set

9

9730905

6-32 x 5/16” SS Screw, PCB Screw Set

10

9870620

Flat Washer, PCB Screw Set

11

3400006-1

Control Board Cover

12

9090112

24 VDC, 4-20 mA Terminal Block/2 pins

13

9090114

Sensor Terminal Block/4 pins

14

9090113

Serial connection Terminal Block/3 pins

15

9090119

Relay Connection Terminal Block/9 pins

7.1 FRONT PANEL CONTROL BOARD EXPLODED

7.2 FRONT PANEL CONTROL BOARD EXPLODED, WITH RELAYS

48

7.3 TRANSMITTER CASE, BACK WITH CABLE GLANDS

Item #

Part #

Description

1

3600449

Transmitter Case

2

9360005

PVC Cable Gland, ½” NPT, Grey

3

9300034

Locking Nut, ½” NPT, Steel

4

9300017

Sealing ring, ½” elastomer

5

9870650

Split Washer, PS mounting

6

9870620

Flat Washer, PS mounting

7

2101820-1

Power Supply Board

8

9730604

6-32 x ¼” screw, SS, PS mounting

Part #

Description

2000002-1

Front Panel, Loop-Powered

2000002-2

Front Panel, AC/DC Powered

2000002-3

Front Panel, Loop-Powered, Hart Output

2101820-1

Power Supply Board, 110/220 VAC Input

2101820-3

Power Supply Board, 110/220 VAC Input, w/preamp

2101820-4

Preamp Board

3400006

Control Board Cover

9090112

Connector Plug, 2 Position (Loop, AC/DC, or Hart Versions)

9090113

Connector Plug, 3 Position (Loop or AC/DC Versions)

9090114

Connector Plug, 4 Position (Loop, AC/DC or Hart Versions)

9090119

Connector Plug, 9 Position (AC/DC Version)

9240503-1

Front Panel Membrane Switch

9300017

Sealing ring, Cable Gland

9300034

Locking Nut, Cable Gland

9360005

Fitting, Cable Gland

9830214

Screw, Front Panel

7.4 REPLACEMENT PARTS

Page 49 Model T80

7.5 ACCESSORIES

Part #

Description

2000006

Kit, Universal Mount

2000007

Kit, Handrail Mount

2000008

Kit, Panel Mount

1000300-1

4-20 mA USB Data Logger

9130007

Replacement Battery for Data Logger

1000260-1

Sunshield for Pole Mount

1000260-2

Sunshield for Rail Mount

50

8.0 S80 SENSORS

S80 sensors are a family of digital sensors designed for use with ECD digital analyzers, the Model T80 transmitter
or the Model C80 controller. S80 sensors accept the standard ECD electrode cartridges. The S80 sensors convert
the analog signals into a temperature compensated digital protocol that allows two way communications with
the transmitter. The type of sensor, identity and serial number are stored in the sensor’s memory along with
three calibration registers. When connected to an ECD digital analyzer the sensor’s information is uploaded to
the analyzer configuring the displays and outputs to the values appropriate to the sensor’s measured parameter.
Connect an S80 pH sensor to a Model T80 Transmitter and the Transmitter configures itself into a calibrated pH
transmitter.

The internal components of the S80 sensors, the signal conditioner, temperature sensor and cable assembly are
epoxy encapsulated inside the ¾” O.D. housing. Epoxy encapsulation of the components increases the reliability
of the sensor by eliminating failures caused by wiring and connector breakage. The S80 sensors use the same
easily replaceable electrode cartridges as the S10 and S17 sensor assemblies.

8.1 S80 INSTALLATION

Four typical installation configurations are available for ECD sensors: insertion, immersion, flow-through and
valve-retraction. Although there are many ways to accomplish these mounting configurations, ECD recommends
the following installation configurations.

8.1.1 INSERTION

The S80 sensor is installed using a ¾” MNPT compression fitting with choice of nylon, Teflon or 316 SS ferrule.
The ¾” MNPT can be inserted into a pipe Tee or through a tank wall, the S80 is then inserted through the fitting

and compression gland is tightened to secure the sensor in place. The torque specification for the gland fitting is
20-ft/lbs. Over-tightening of the nut may swage the nylon or Teflon ferrules to the housing crushing the internal
sensor components.

8.1.2 IMMERSION

The ¾” MNPT compression fitting is reversed and threaded into an extension/immersion pipe so the
compression gland is facing the measurement end of the sensor. Feed the cable through the immersion tube,
insert the S80 sensor at least 5” into the tube and tighten the sensor in place.

8.1.3 FLOW THROUGH

Page 51 Model T80

Although the insertion configuration can be used as a flow-through mounting by inserting the S80 sensor into a
pipe tee, ECD has various flow cells available for convenience. The flow cells are 2.0” diameter by 5” long, ported
½” FNPT through and ¾” FNPT for the sensor. The flow cells are available in 316 Stainless Steel, PVC and Kynar.
Use of the flow cell can facilitate an optional spray cleaning nozzle for the electrode. Connecting 40+ psi of water
or air to the nozzle will remove particulate materials or biofilms from the sensor tip. Detergents or solvents can
be used to remove greases or oils from the sensor while acids can be used for hard water scale.

8.1.4 VALVE RETRACTABLE

The S80 sensor is optionally designed for valve retraction service, (-1) Sensor Style. Mounting is directly into a
process line or through a tank wall. The ball valve system allows the sensor to be removed from service without
shutting down the line or emptying the tank. ECD recommends the valve-retraction mounting for ease of
maintenance or in applications where the process line cannot be shut down and the pressure does not exceed
100 psig.

To remove the sensor from the valve assembly refer to the following directions:

CAUTION: Do not put hands or fingers between the safety lanyard cables and any part of the sensor. Use the
external cable seal/handle to pull or guide the sensor through the valve.

1. Loosen the small swage nut at the rear of the fitting assembly slowly as this compression fitting is

holding the sensor in place. CAUTION the sensor may snap back quickly if it is under pressure. (do not
remove the nut from the body of the fitting).

2. Slide the sensor to its stop by pulling it through the ball valve. The safety lanyards will be extended,

confirming that the sensor is fully retracted. Note: the safety lanyards are redundant protection; the
sensor will come to a stop when the high pressure stop reaches the front of the retainer fitting.

3. Close the ball valve.

4. Remove the handle retaining nut and the valve handle.

5. Remove the safety lanyards from the valve stem.

6. For the stainless steel ball valves, loosen and remove the large retainer nut from the retainer fitting. For

Kynar ball valves, loosen and remove the union nut on the sensor side of the ball valve.

7. Firmly pull the retainer fitting from the valve. The sensor will be removed with the fitting.

52

8.1.5 FLANGE FITTINGS

S80 Digital Sensor

Measurement Type

-0 S80 Digital Sensor, pH, ORP, pION measurement

-1 S80 Digital Sensor, Dissolved Oxygen measurement

-2 S80 Digital Sensor, Contacting Conductivity, 1µS to 50 mS

-3 S80 Digital Sensor, Inductive Conductivity, 50 mS to 1000 mS

-5 S80 Diagnostic Sensor, pH, ORP, pION measurement SENTINEL S80 Sensor

-6 S80 Digital sensor, ppb Dissolved Oxygen

-7 S80 Digital Sensor, Resistivity

Sensor Style

0 Insertion Style (Standard)

1 Valve Retractable Style with flanged blow out protector

Housing Material

-0 Stainless Steel, ¾” O.D., (Standard)

-1 Titanium, ¾” O.D.

-2 Hastelloy, ¾” O.D.

-5 Polypropylene, 1”O.D.

-9 Other Material, Consult with Factory

Housing Length

0 10” length

1 17” length

2 24” length

3 30” length

4 36” length

Process Connection

00 No Fitting or Valve Assembly

01 (75) ¾” MNPT SS Fitting with Nylon Ferrule

02 (75HT) ¾” MNPT, 316 SS gland, Teflon ferrule

03 (75SF) ¾” MNPT, 316 SS gland, SST ferrule

04 (75HC) ¾” MNPT, Hastelloy gland, Teflon ferrule

05 (75TT) ¾” MNPT, Titanium gland, Teflon ferrule

06 (75PP) ¾” MNPT, All Polypropylene gland fitting

07 (75K) ¾” MNPT, All Kynar gland Fitting

08 (75TFE) ¾” MNPT, All Teflon gland fitting

29 Other Fittings, Consult Factory

30 (VSS) 1” NPT 316 Stainless Steel Valve Retraction Assembly, nylon

31 (VSSHT) 1” NPT 316 Stainless Steel Valve Retraction Assembly, Teflon

32 (VSSE) 1” NPT 316 Stainless Steel Valve Retraction Assembly Toroidal

33 (VHC) 1” NPT Hastelloy Valve Retraction Assembly

34 (VTT) 1” NPT Titanium Valve Retraction Assembly

36 (VPP) 1” NPT All Poly Propylene Valve Retraction Assembly

37 (VKY) 1” NPT All Kynar Valve Retraction Assembly

59 Other Assemblies, Consult Factory

80 1/1.5” Sanitary Flange, 316ss, Viton o-rings, nylon ferrule

81 2” Sanitary Flange, 316ss, Viton o-rings, nylon ferrule

82 2 ½” Sanitary Flange, 316ss, Viton o-rings, nylon ferrule

99 Other Fittings, Consult Factory

Detachable Cable Connector

0 None

1 Straight (axial) Connector

2 Right Angle Connector

Flange mountings can be accomplished with the insertion and valve-retraction configurations using the desired
flange and by mounting the gland fitting or valve-retraction assembly to the flange.

8.2 S80 PART NUMBER CONFIGURATOR

S80 sensors are available in five measurement types, (-0) a millivolt style for pH, ORP and ion selective
measurements, (-1) dissolved oxygen style, (-2) contacting conductivity style, (-3) inductive conductivity style
and (-4) resistivity style. Each style is available in a variety of materials and insertion lengths.

Page 53 Model T80

Cable Length

-0 No Cable (Detachable Cable Version only)

-1 10 ft. (Standard)

-2 20 ft.

-3 30 ft.

-4 40 ft.

-5 50 ft.

-A 100 ft.

“T” Handle

0 No “T” Handle

1 (T) “T” Style handle with Lanyards for Valve Retractable

2 (TP) “T” Style handle, ¾” polypro fitting (1000096)

3 (TS) “T” Style handle, ¾” stainless steel fitting (1000098)

4 (TN) “T” Style handle , 1” Nylon fitting (1000104)

5 (TD) 3/4" Tee for INSERTION w/ Detachable Conn (2000092)

6 (TDV) 3/4" Tee for VALVE w/ Detachable Conn (2000166)

7 (1TD) 1" Tee for INSERTION w/ Detachable Conn (2000119)

8 (1TDV) 1" Tee for VALVE w/ Detachable Conn (2000118)

O-rings Guard & Fittings

0 Viton Any/All

1 HF Viton Cond Guard

2 EPR Cond Guard

3 Kalrez Cond Guard

4 CV75 Cond Guard

5 HF Viton Valve & Fitting

6 EPR Valve & Fitting

7 Kalrez Valve & Fitting

9 CV-75 Valve & Fitting

A HF Viton Grd & Val & Fit

B EPR Grd & Val & Fit

C Kalrez Grd & Val & Fit

D CV-75 Grd & Val & Fit

S80

-0 0 - 0 0 01

-0

1

1

0

8.3 TRITON® DO80 SENSORS

DO80 Dissolved Oxygen Sensor

Sensor Style

-0

(I) Immersion Style Sensor - ¾” MNPT Mounting Thread

-1

(IM) Immersion Style Sensor - G1 thread Mounting Thread

-2

(F) Flow Cell and Sensor - ¾” FNPT entries

-3

(FM) Flow Cell and Sensor – 1” Slip entries

Spray Cleaner

00

No Spray Cleaner

01

(SC) Spray Cleaner

02

PVC Compression Fitting, DO80 to 1¼” MNPT

Cable Style

-0

Fixed Cable

-1

(DA) Axially Detachable Cable

Cable Length

00

No Cable

10

10 ft (3 meters)

20

20 ft (6.1 meters)

30

30 ft (9.1 meters)

40

40 ft (12.2 meters)

50

50 ft (15.2 meters)

X0

Specify Length

DO80

-1

00

-1

10

54

8.4 TRITON® TR6 SENSORS

TR6 Turbidity Suspended Solids Sensor

Optical Style

1

Front Mounted Optics, for use with Immersion assembly

2

Side Mounted Optics, for use with Immersion assembly

3

Side Mounted Optics, for use with Flow Through Cell

Process Connection

0

None

1

1” MNPT Nylon Gland Fitting

2

Flow Through Cell, 2 x 2” FNPT entries, 1 x 1” FNPT sensor port

Cable Type and Length

01

10 ft (3.0 meters) (Waterproof/Submersible Cable Style)

02

20 ft (6.1 meters) (Waterproof/Submersible Cable Style)

03

30 ft (9.1 meters) (Waterproof/Submersible Cable Style)

04

10 ft (3.0 meters) (Water Resistant Cable Style)

05

20 ft (6.1 meters) (Water Resistant Cable Style)

06

30 ft (9.1 meters) (Water Resistant Cable Style)

Measurement Range

0

0-250 NTU and 0-1000 NTU

1

0-500 NTU and 0-2000 NTU

2

0-1000 NTU and 0-4000 NTU

3

0-2000 NTU and 0-4000 NTU

TR6 3 2

01

1

Page 55 Model T80

8.3 S80 SENSOR MAINTENANCE

All electrochemical sensors require periodic cleaning and/or replacement. The life of an electrode is dependent
on the process conditions it is exposed to, a pH electrode may last a year or longer in potable water and only a
few weeks in a hot caustic bath. The chemical constituents in the process may coat the electrode surfaces
requiring the electrode to be removed and cleaned or replaced.

Cleaning agents should be specific to the type of coating, detergents and alcohols for removing greases and oils,
acids for removing hard water scales and metallic deposits or spray washing for flocculants and biofilms.

8.3.1 ELECTRODE CARTRIDGE INSTALLATION

Unless ordered separately, electrode cartridges are generally shipped installed in a sensor. Sensors ordered
without an electrode are shipped with a shipping plug to keep contamination from getting inside the sensor
during shipment or storage. The following procedure explains how to install the electrode cartridge in the sensor
assembly:

1. Remove the shipping plug by turning it counterclockwise.

2. Remove the electrode cartridge from the protective soaker boot. Be careful not to flex the electrode

body while removing the tape and the protective boot.

3. Rinse the electrode tip in tap water and wipe the electrode body dry then lubricate the o-ring seals with

the included lubricant. Save the protective soaker boot in the event the electrode must be stored at a
future time.

4. Carefully insert the electrode cartridge into the sensor assembly by turning until hand tight. The first o-

ring, closest to the front of the electrode, will be slightly visible if held horizontally.

NOTE: IF EXCESS FORCE IS REQUIRED DURING ELECTRODE INSTALLATION, CHECK FOR PROPER THREAD
ENGAGEMENT OR FOR AN OBSTRUCTION.

8.3.2ELECTRODE CARTRIDGE REPLACEMENT

Periodic replacement of the electrode cartridge is required for pH, ORP and Specific Ion sensors. The following
procedure explains how to replace the electrode cartridge in the sensor assembly:

1. Remove the electrode cartridge from the front of the sensor assembly by turning it counterclockwise.

2. For installation procedure follow steps 2, 3, and 4 in section 8.3.1 electrode cartridge installation.

8.3.3 ELECTRODE CLEANING

An important aspect of sensor maintenance is the service of the electrode cartridge. After being in operation, an
electrode may begin to exhibit slow response or non-reproducible measurements. This may be due to coating of
the measurement electrode or clogging of the reference junction. Regular electrode cleaning reduces problems
associated with the coating and clogging. Frequency of cleaning will depend on the process and application. The
following procedures are used to clean pH and ORP electrodes.

If possible, the electrode should be cleaned without removing it from the sensor body. However, if the electrode
must be removed, the o-rings must be inspected and re-lubricated. See section 3.10.

56

8.3.4 PH ELECTRODE CARTRIDGE CLEANING

Remove the sensor from the process and carefully wash the wetted end of the electrode cartridge in a mild
solution of detergent and water or with methyl alcohol. If the electrode response is not improved, soak the
electrode in 0.1 Molar HCl for 5 minutes. Remove and rinse the electrode with tap water and soak in 0.1 Molar
NaOH for 5 minutes.

Remove the electrode from the NaOH solution, rinse the electrode and soak in a 4 pH buffer solution for 10
minutes. This should improve the response of the electrode. If not, replace the electrode.

If the electrode must be left out of the process for an extended period of time, store it in a solution of water
saturated with KCl or a 4.0 pH buffer solution. ECD does not recommend the storage of electrodes in distilled or

deionized water.

8.3.5 ORP ELECTRODE CARTRIDGE CLEANING

Cleaning the platinum surface to remove coating can be done using an abrasive cleaner like 600-800 grit wet/dry
sand paper or chemical reagents specific for the type of coating. Abrasive cleaning is the most common method
of cleaning and is usually sufficient to restore the platinum surface; however, some processes can form a hard
coating requiring chemical cleaning with a strong acid solution. Acid solutions greater than 10% are not
recommended.

8.3.6 PION ELECTRODE CARTRIDGE CLEANING

Ion selective electrodes require periodic service. Weekly checks should be performed to assure the accuracy of
the measurement.

The ion selective crystal that senses the ion concentration can become sluggish in response due to coating or
reactions with the process solution. Periodic cleaning or polishing will minimize drift and maintain the sensors
response.

CLEANING
The solid state crystal based electrodes, bromide, chloride, copper, cyanide, fluoride, silver, sulfide are fairly
robust and can be cleaned with alcohols, detergents or dilute acids to remove coatings caused by greases, oils or
films. A soft tooth brush or paper towel should be used to remove stubborn coatings. Do not clean with a wire
brush. Metal carryover from the brush will compromise the measurement. Cleaning should be followed by
polishing before calibrating the sensor.

The PVC membrane sensors, Ca++, K+, NH4+, NO3- are fragile membranes and should be cleaned using a soft
artist style paint brush while rinsing with a stream of water. Dilute dish washing detergents can be used to
remove oily films Solvents or strong acid/alkaline solution will irreparably harm the electrode.
Calibration may be necessary after cleaning.

POLISHING
Abrasive polishing is only recommended for the solid state crystal style Combination Electrodes. ECD supplies
two styles of abrasive cleaning kits, a package of light blue colored polishing strips or a small vial of 0.3 micron
alumina powder with Q-tips with the fluoride electrodes.
The sensing surface of solid state electrodes can wear over time, which causes drift, poor reproducibility and
loss of response in low level samples. The electrode can be restored by polishing the sensing surface with a
polishing kit. The polishing kit can also be used if the sensing surface has been etched or chemically poisoned.

Page 57 Model T80

Fluoride Electrodes

a. Moisten the end of the Q-tip with water and dip it in the alumina polishing powder to pick up a

small amount of the powder.

b. Rub the polishing powder onto the fluoride crystal in a circular motion and moisten the tip if

necessary to produce a liquid consistency more than a paste.

c. Polish the electrode for about 30 seconds and examine the tip for a shiny surface, repeat if

necessary.

d. Rinse the electrode with distilled water and soak the electrode in a low ppm Calibration solution

for a few minutes.

e. Perform a Two Point Calibration.

Other Solid State electrodes, Bromide, Cadmium, Chloride, Copper, Lead, Sulfide, Silver…

a. Place a few drops of distilled water on the blue polishing strip to wet the polishing surface.
b. Hold the electrode with the sensing surface facing up.
c. Slide the polishing strip back and forth across the electrode tip, the sensing tip will be abraded

and a new electrode surface will be generated.

d. Polish the electrode for about 30 seconds and examine the tip for a shiny surface, repeat if

necessary.

e. Rinse the electrode with distilled water and soak the electrode in a low ppm Calibration solution

for a few minutes.

f. Perform a Two Point Calibration.

8.3.7 DISSOLVED OXYGEN CARTRIDGES

The Teflon membrane of the Dissolved Oxygen sensors is fragile and should be cleaned using a soft cloth or an
artist style paint brush while rinsing with a stream of water. Dilute dish washing detergents can be used to
remove oily films. Solvents are not recommended as they could diffuse through the membrane and harm the
electrode. Strong acid/alkaline solutions should not harm the electrode but should only be used as a last resort
before replacing the electrode.

8.3.8 TRITON DO80 DISSOLVED OXYGEN

The Triton DO80 sensor should receive maintenance on a regular basis. The maintenance interval should be
determined empirically as it will depend on the installation conditions and the nature of the media being
measured. The interval should be no greater than every two months.

Maintenance Procedure

The typical procedure would include;

 Cleaning the sensor
 Check the measuring function:

o Remove the sensor from the medium.
o Clean and dry the sensor/membrane.
o After about 10 minutes in air, measure the oxygen saturation index (without recalibration).
o The measured value should be at 100 ± 4 % SAT

 If necessary, replace a defective membrane or one which cannot be cleaned any more.
 Recalibration, if necessary.

58

Cleaning the Sensor

The fluorescence cap of the Triton DO80 sensor must be clean to ensure an accurate measurement. The
measurement will degrade as the fluorescence cap gets coated. Build-up of material on the cap will increase the
response time and decrease the slope. The sensor should be cleaned on a regular basis and before every
calibration.

*** Do Not Scrub the Sensing Portion of the Cap with any abrasive material, use only a soft sponge or cloth
and water to clean the tip***

The cleaning method depends on the nature of the coating. For insoluble mineral or salt deposits, the sensor
should be soaked in a 1-5 % solution of HCl, hydrochloric acid, for no more than 10 minutes. After this acid
treatment rinse the sensor with copious amounts of tap water and then allow it to soak in the tap water for at
least 5 minutes before evaluating the performance. Repeat if necessary.

For biological films or dirt, rinse the tip with tap water and gently wipe the sensing surface with a soft sponge or
cloth.

Cleaning Internal Optics

The internal optical surface should only need cleaning if the Fluorescence Cap is broken or defective. The
following steps should be followed in the case of a leaking cap.

1. Unscrew the protective guard and the fluorescence cap from the sensor head.

2. Carefully clean the optical surface with a soft cloth and water until the buildup is fully removed.

3. Use only drinking or distilled water to clean the optics, do not scratch the optical surface.

4. Dry the optics with a soft lint free cloth and screw on a new fluorescence cap.

8.3.8.1 Replacing the Fluorescent Cap

The Fluorescence Cap (P/N 2500207) can provide up to two years service, if damaged or when it expires, it is
easily replaced.

Removing the Old Fluorescence Cap

 Remove the sensor from the medium.
 Unscrew the protection guard.
 Clean the outside of the sensor.
 Unscrew the fluorescence cap.
 Clean and dry the optical surface if necessary.

Installing the New Fluorescence Cap

 Make sure that there are no dirt particles on the sealing surface.
 Visually inspect the sealing o-ring, replace if necessary. (P/N 1000225)
 Carefully screw the fluorescence cap onto the sensor head until the stop.
 Screw the protection guard back on.

*** After replacing the Fluorescence Cap the sensor must be calibrated. ***

Page 59 Model T80

8.3.9 TRITON TR6 TURBIDITY

The TR6 turbidity sensors don’t require periodic service except in coating applications. Quarterly checks should
be performed to assure the accuracy of the measurement.

The TR6 response can become sluggish due to coating from materials in the process solution. Periodic cleaning
will minimize drift and maintain the sensors response.

CLEANING

The most important maintenance item is keeping the optically clear epoxy window clean. The TR6 turbidity
sensors are fairly robust and can be cleaned with alcohols, detergents or dilute acids to remove coatings caused
by greases, oils or films. Do not use solvents such as MEK, Toluene, Acetone, or trichloroethylene on TR6
sensors. A soft tooth brush or paper towel should be used to remove soft coatings. A Scotch Brite scouring pad
works well for most types of stubborn window fouling. First wet the pad and then place it on a counter with a
plastic-laminate top so that the side of the pad is aligned with the edge of the counter. Work the window of the
TR6 sensor back and forth on the pad until it is clean while removing as little epoxy as possible. If encrusting
organisms such as barnacles or tube worms have attached to the sensor, it will have to be gently scraped with a
flexible knife blade prior to using the pad.

POLISHING

Some applications will result in pitting of the sensor face. Pits can be removed with abrasive cloth. Polish the
sensor window as follows:

1) Tape a strip of 400 grit wet-or-dry abrasive cloth to the edge of a counter.

2) Add a few drops of water to the abrasive and work the sensor window in smooth one-way

strokes on the cloth using the counter edge as a guide.

3) Continue until the sensor is shiny and pit free.

It is important to remove as little epoxy as possible.

8.3.10 CONDUCTIVITY AND RESISTIVITY SENSORS

Cleaning agents should be specific to the type of coating, detergents or alcohols for removing greases and oils,
acids for removing hard water scales and metallic deposits or spray washing with water and a soft brush for
flocculants and biofilms.

Resistivity sensors rarely need cleaning due to the nature of the measurement. If cleaning is necessary or the
sensor has been in service for greater than two years follow the instructions listed below.

Rinse the sensing end with alcohol, methanol, ethanol or isopropyl will work fine.

Soak for 5 minutes in a dilute nitric acid solution, a 3.5% solution is made by a 20:1 dilution of concentrated
Nitric Acid (5 ml HNO3 in 100ml of water).

Then rinse thoroughly with tap water and soak in distilled water for 5-10 minutes.

60

8.4 S80 SENSOR SPECIFICATIONS

Part#

Description

pH Range

Temperature

Max. Pressure

2005005-HPW

High Purity Water, RADEL Body, dbl jct TFE Ref, Full
bulb pH glass,

2-12 pH

-10°-90°C

150 psig

2005145

General Purpose, RADEL body, dbl jct TFE Ref, Flat pH
glass,

0-14 pH

-10°-90°C

150 psig

2005146

General Purpose, PEEK body, dbl jct ceramic Ref, Flat
pH glass,

0-14 pH

-10°-90°C

150 psig

2005148

Non aqueous service, RADEL body, dbl jct TFE Ref, Flat
pH glass,

0-14 pH

-10°-90°C

150 psig

2005157

Hi Temp/ Hi pH, PEEK body, dbl jct TFE Ref, Hemi pH
glass,

0-14 pH

0°-130°C

150 psig

2005059

Recessed Bulb, RADEL Body, dbl jct TFE Ref, Hemi pH
glass,

0-14 pH

-10°-90°C

150 psig

2005066

Chemical Resistant, PEEK body, triple jct TFE Ref, Flat
pH glass,

0-14 pH

0°-130°C

150 psig

2005169

Chemical Resistant, PEEK body, dbl jct TFE Ref, Hemi
pH glass,

0-14 pH

0°-130°C

150 psig

2005130

Sulfide Resistant, PEEK body, triple jct TFE Ref, Hemi
pH glass,

0-14 pH

0°-130°C

150 psig

2005150

Solvent Resistant, PEEK body, dbl jct TFE Ref, Flat pH
glass,

0-14 pH

-10°-90°C

150 psig

Dimensions:

S80 - ¾”OD x 10” Length, optional lengths, 17”, 24”, 30”, 36” .… in 6” increments to 8 ft.

Cable Length:

10 ' standard, Optional lengths in 10 ' increments
4 conductors shielded

Housing Materials:

Standard, 316 Stainless Steel, Optional, Titanium (T), grade 2, Hastelloy (H), C-22, PVDF (K),

O-Ring Materials:

Viton™ (VIT), Standard, Ethylene Propylene (EPR), Optional, Fluoro-silicone (FSIL), Optional, Silicone (SIL),
Optional, KALREZ™ (KLZ), Optional, CV75 (CV), Optional

Process Connections:

-75 ¾” 316 SS gland fitting with nylon ferrule

-75PP ¾” poly propylene gland fitting with ferrule

-75SF ¾” 316 SS gland fitting with stainless steel ferrule

-75TFE ¾” Teflon™ gland fitting with Teflon™ ferrule

-100 1” Teflon™ glands fitting for PVDF housing only

-VSS 1” 316 SS valve retraction assembly

-VKY 1” PVDF valve retraction assembly

Shipping Weight:

S80 2.5 lbs (1.2 kg)
S80 with VSS 5.8 lbs (2.65 kg)

8.4.1 PH ELECTRODES

Page 61 Model T80

2005103

Fluoride resistant, Peek body, Rugged pH glass, dbl jct
TFE Ref,

0-14 pH

-10°-90°C

150 psig

2005013

pH, antimony, RADEL body, TFE junction

3-10 pH

10°-50°C

150 psig

8.4.2 ORP ELECTRODES

Part#: 2005167 (2005367 SENTINEL)
ORP sensor: Platinum
Construction: PEEK body,
Reference Electrode: double porous Teflon junction
Measurement Range: -1500 mV - +1500 mV
Temperature Range: -10° - 80°C
Pressure Range: 150 psig

8.4.3 DISSOLVED OXYGEN

Part#: 2005622
2 mil Teflon membrane
Galvanic cell: Silver/Lead
Construction: PEEK body,
Measurement Range: 0-20 ppm

Temperature Range: -10° - 130°C
Pressure Range: 30 psig

8.4.4 AMMONIUM ELECTRODE

Part #: 2005083 (2005383 SENTINEL)
ISE sensor: PVC membrane
Construction: Radel (PES) body,
Reference Electrode: double porous Teflon junction
Measurement range: 0.05 - 18,000 ppm
pH Range: 2-10 pH
Temperature Range: 0°- 40°C
Pressure Range: 50 psig

8.4.5 BROMIDE ELECTRODE

Part #: 2005062 (2005362 SENTINEL)
ISE sensor: solid state AgS/AgBr membrane
Construction: Radel (PES) body,
Reference Electrode: double porous Teflon junction
Measurement range: 0. 1 - 80,000 ppm
pH Range: 2-12 pH
Temperature Range: 0°-50°C
Pressure Range: 150 psig

8.4.6 CALCIUM ELECTRODE

Part #: 2005043 (2005343 SENTINEL)
ISE sensor: PVC membrane
Construction: Radel (PES) body,
Reference Electrode: double porous Teflon junction
Measurement range: 0.1 - 40,000 ppm
pH Range: 2.5 - 10 pH

62

Temperature Range: 0°-40°C
Pressure Range: 50 psig

8.4.7 CHLORIDE ELECTRODE

Part #: 2005008 (2005308 SENTINEL)
ISE sensor: solid state AgS/AgCl membrane
Construction: Radel (PES) body,
Reference Electrode: double porous Teflon junction
Measurement range: 2 - 35,000 ppm
pH Range: 2-12 pH
Temperature Range: 0°-80°C
Pressure Range: 150 psig

8.4.8CUPRIC ELECTRODE

Part #: 2005058 (2005358 SENTINEL)
ISE sensor: solid state CuS membrane
Construction: Radel (PES) body,
Reference Electrode: double porous Teflon junction
Measurement range: 1 ppb – 6,300 ppm
pH Range: 2 - 8 pH
Temperature Range: 0°-80°C
Pressure Range: 150 psig

8.4.9 CYANIDE ELECTRODE

Part #: 2005042 (2005342 SENTINEL)
ISE sensor: solid state AgS/AgCN membrane
Construction: Radel (PES) body,
Reference Electrode: double porous Teflon junction
Measurement range: 0.1- 260 ppm
pH Range: 11-13 pH
Temperature Range: 0°-80°C
Pressure Range: 150 psig

8.4.10 FLUORIDE ELECTRODE

Part #: 2005163 (2005363 SENTINEL)
ISE sensor: solid state LaF crystal
Construction: PEEK body,
Reference Electrode: double porous Teflon junction
Measurement range: 0.02 - 2,000 ppm
pH Range: 5-8 pH
Temperature Range: 0°- 80°C
Pressure Range: 50 psig

8.4.11 POTASSIUM ELECTRODE

Part #: 2005034 (2005334 SENTINEL)
ISE sensor: PVC membrane
Construction: Radel (PES) body,
Reference Electrode: double porous Teflon junction
Measurement range: 0.1- 40,000 ppm
pH Range: 2-12 pH

Page 63 Model T80

Temperature Range: 0°-40°C
Pressure Range: 50 psig

8.4.12 SILVER ELECTRODE

Part #: 2005016 (2005316 SENTINEL)
ISE sensor: solid state AgS membrane
Construction: PEEK body,
Reference Electrode: double porous Teflon junction
Measurement range: 0.1-107,000 ppm
pH Range: 2-14 pH
Temperature Range: 0°-80°C
Pressure Range: 150 psig

8.4.13 SODIUM ELECTRODE

Part #: 2005031 (2005331 SENTINEL)
ISE sensor: Sodium selective Glass membrane
Construction: PEEK body,
Reference Electrode: double porous Teflon junction
Measurement range: 0.2 - 23,000 ppm
pH Range: 2-14 pH (pH must be 3 units higher than pNa)
Temperature Range: 0°-80°C
Pressure Range: 150 psig

8.4.14 SULFIDE ELECTRODE

Part #: 2005122 (2005322 SENTINEL)
ISE sensor: solid state AgS membrane
Construction: PEEK body,
Reference Electrode: double porous Teflon junction
Measurement range: 0.01 - 32,000 ppm
pH Range: 11-14 pH
Temperature Range: 0°-80°C
Pressure Range: 150 psig

8.4.15 TRITON® DO80

Measurement Range: 0 - 20 mg/l (0 - 20 ppm)

0 - 200 % Saturation

0 - 400 mbar (0 - 6 psi)
Pressure Range: Maximum Pressure 10 bar (159 psi)
Temperature Range: -5° - 50°C (20° - 120°F) Measuring

-20° - 60°C (0° - 140°F) Ambient
Response Time: T90 = 60 sec
Accuracy: Max. Error < 2 % of measured range
Repeatability: ±0.5 % of measured range
Resolution: 0.01 ppm or 0.01 % Saturation
Operating Lifetime of Sensor Cap: Up to 2 years in recommended service, typically > 1 year
Wetted Materials: 316 SS, POM, PVC, Silicone
Sensor Cable: Shielded 7 core cable, 7 meter (23 ft) or 15 meter (49 ft) lengths
Process Connection: G1 Thread (¾” FNPT adapter available)

Maximum Cable Length: 100 m maximum from C-22 controller
Dimensions: Length 8.7” (220 mm), Diameter 1.6” (40 mm)

64

Weights: Cable length 7 m (23 ft): 0.7 kg (1.5 lbs)
Cable length 15 m (49 ft): 1.1 kg (2.4 lbs)

8.4.16 TRITON® TR6

Measuring principle:
Particle caused back scattering of 850 nm near infrared light with sunlight rejection filter

Measuring Range:

-1 Sensor

0.0 ... 250.0 NTU, FNU & 0 ... 1000 NTU, FNU

-2 Sensor

0.0 ... 500.0 NTU, FNU & 0 ... 2000 NTU, FNU

-3 Sensor
0 ... 1000 NTU, FNU& 0 ... 4000 NTU, FNU

-4 Sensor
0 ... 2000 NTU, FNU & 0 ... 4000

NTU, FNU ppm, mg/L and %solids to equivalent NTU value

Accuracy:
2% of reading or 0.5 NTU, whichever is larger

Process Temperature Range:
–5 ... 50°C

Temperature Compensation:
Internal Temperature compensation

Process pressure range:
50 psi maximum in Flow Cell
500meter submersion depth (50 bar, 725 psi)
Vacuum operation is not permitted

Drift:
< 1% / month

Wetted Materials
Sensor body: stainless steel AISI 316 Ti
Sensing end: epoxy

Process Connection:
1” NPT Nylon compression fitting

Electrical connection
Waterproof 5-wire measuring cable or
Water Resistant 5-wire measuring cable (Standard)

Cable Length:
10ft. (3.0 m), 20ft (6.1 m), 30ft (9.1 m) cables

Page 65 Model T80

APPENDIX

°C

pH

pH

pH 0 4.00

7.115

10.32

5

4.00

7.085

10.25

10

4.00

7.06

10.18

15

4.00

7.04

10.12

20

4.00

7.015

10.06

25

4.005

7.00

10.01

30

4.015

6.985

9.97

35

4.025

6.98

9.93

40

4.03

6.975

9.89

45

4.045

6.975

9.86

50

4.06

6.97

9.83

55

4.075

6.97

60

4.085

6.97

65

4.10

6.98

70

4.13

6.99

75

4.14

7.01

80

4.16

7.03

85

4.18

7.05

90

4.21

7.08

T80 Root Menu

1 DEVICE SETUP

DEVICE SETUP

CALIBRATION

1 CALIBRATION

1 AUTO

2 STANDARDIZE

3 MANUAL

4 TEMP

2 BASIC SETUP

CONFIG

1 XMTR

XMTR CONFIG

ANALOG CONFIG

1 ANALOG

1 SCALE

ANALOG SCALE

1 UPPER

2 LOWER

2 PID

PID CONFIG

1 P Term

2 I Term

3 D Term

3 CALIBRATE

CALIBRATE

1 Zero cal

2 Gain cal

3 Save

2 ALARMS

ALARM CONFIG

1 Alrm 1 thresh

2 Alrm 1 hyst

A. AUTO CAL BUFFER TABLES

B. T80 HART MENU

66

3 Alrm 1 dly on

4 Alrm 1 dly off

5 Alrm 2 thresh

6 Alrm 2 hyst

7 Alrm 2 dly on

8 Alrm 2 dly off

9 Alrm 3 thresh

10 Alrm 3 hyst

11 Alrm 3 dly on

12 Alrm 3 dly off

3 Address

2 Device
information

DEVICE
INFORMATION

1 Distributor

2 Model

3 Dev ID

4 Cfg chng count

5 Tag

6 Long tag

7 Date

9 Descriptor

10 Message

11 Final asmbly num

3 INFORMATION

INFORMATION

1 XMTR

XMTR INFO

1 Serial #

2 FW Rev

3 HW Rev

4 Fld dev rev

2 SENSOR

SENSOR INFO

1 Serial #

2 FW Rev

3 HW Rev

3 DEVICE

DEVICE
INFORMATION

1 Distributor

2 Model

3 Dev ID

4 Cfg chng count

5 Tag

6 Long tag

7 Date

9 Descriptor

10 Message

11 Final asmbly
num

2 PV

3 Temperature

4 Output %

5 Sensor Name

Page 67 Model T80

D.MODBUS RTU REGISTER LISTING

Modbus ID (Slave Address)

1 Byte

1 to 247 (0x01 to 0xF7)

Function code

1 Byte

0x03

Starting Address

2 Bytes

0x0000 to 0xFFFF

Quantity of Registers

2 Bytes

1 to 125 (0x01 to 0x7D)

CRC

2 Bytes

calculated

Modbus ID (Slave Address)

1 Byte

1 to 247 (0x01 to 0xF7)

Function code

1 Byte

0x03

Byte Count

1 Byte

2 X N*

Register Value(s)

*N X 2 Bytes

CRC

2 Bytes

calculated

*N = Quantity of Registers

Modbus ID (Slave Address)

1 Byte

1 to 247 (0x01 to 0xF7)

Error Code

1 Byte

0x86

Exception Code

1 Byte

01, 02, 03 or 04

CRC

2 Bytes

calculated

Request

Modbus ID (Slave Address)

1 Byte

1 to 247 (0x01 to 0xF7)

Function code

1 Byte

0x06

Register Address

2 Bytes

0x0000 to 0xFFFF

Register Value

2 Bytes

0x0000 to 0xFFFF

CRC

2 Bytes

calculated

Response

Modbus ID (Slave Address)

1 Byte

1 to 247 (0x01 to 0xF7)

Function code

1 Byte

0x06

Register Address

2 Bytes

0x0000 to 0xFFFF

03 (0X03) READ HOLDING REGISTERS

This function code is used to read the contents of a contiguous block of holding registers in a remote device.
The Request Protocol Data Unit specifies the starting register address and the number of registers. In the
Protocol Data Unit Registers are addressed starting at zero. Therefore registers numbered 1-16 are address as
0-15.
The register data in the response message are packed as to bytes per register, with the binary contents right
justified within each byte. For each register, the first byte contains the high order bits and the second contains
the low order bits.

Request

Response

Error

06 (0X06) WRITE SINGLE REGISTER

This function code is used to write a single holding register in a remote device.
The Request Protocol Data Unit specifies the address of the register to be written. Registers are addressed
starting at zero. Therefore register number 1 is addressed as 0.
The normal response is an echo of the request, returned after the register contents have been written.

68

Register Value

2 Bytes

0x0000 to 0xFFFF

CRC

2 Bytes

calculated

*N = Quantity of Registers

Error

Modbus ID (Slave Address)

1 Byte

1 to 247 (0x01 to 0xF7)

Error Code

1 Byte

0x86

Exception Code

1 Byte

01, 02, 03 or 04

CRC

2 Bytes

calculated

REGISTERS

Name

Meaning (2 bytes each register)

Number
of
Registers

Return
Data
Format

Read
Write

Requires
Storage
Initiate

Register #

dec

hex

Modbus ID (slave address)

Defined as 1 to 247 per the Modbus Application

Protocol Specification (V1.1b)

1

16 bit

Integer

RW 0

00

Data Format

Data Format of the User Bus to the T80 (0-DF8N2, 1-

DF8O1, 2-DF8E1, 3-DF8N1)

1

16 bit

Integer

RW 1

01

Baud Rate

Baud Rate of the User Bus to the T80 (0-1200, 1-

2400, 2-4800, 3-9600)

1

16 bit

Integer

RW 2

02

BusMessage

total message count detected by the slave (remote

device)

1

16 bit

Integer

R 3

03

BusCommunicationsError

total CRC error count

1

16 bit

Integer

R 4

04

SlaveExceptionError

total count of exceptions detected

1

16 bit

Integer

R 5

05

SlaveMessage

total messages addressed to the slave (remote

device)

1

16 bit

Integer

R 6

06

SlaveNoResponse

total count of messages not responded to by the

slave (remote device)

1

16 bit

Integer

R 7

07

SlaveNAK

total Negative Acknowledges returned by slave

(remote device)

1

16 bit

Integer

R 8

08

SlaveBusy

total count of "slave busy" was returned for an

address message

1

16 bit

Integer

R 9

09

BusCharacterOverrun

count of messages that couldn't be handled due to

character over-run condition

1

16 bit

Integer

R 10

0A

Reset all Modbus Error

Counters

Resets all of the Modbus Error counters (defined in

Modbus spec) to 0, Write any value.

1

16 bit

Integer

W 11

0B

Product T80 Model Number

(Modbus)

The Model Number of the Unit polled

1

16 bit

Integer

R 12

0C

T80 Serial Number (hi word)

Unit Serial Number (32 bit integer hi word, bytes 3

and 2)

2

32 bit

Long

Integer

R

13

0D

T80 Serial Number (lo word)

Unit Serial Number (32 bit integer lo word, bytes 1

and 0)

14

0E

T80 Mode

Unit operating mode (1-Startup, 2-Sensor Search, 3-

Operate)

1

16 bit

Integer

R 15

0F

T80 Fault Status

Unit Fault flags, bit defined

1

16 bit

Integer

R 16

10

T80 2nd Fault Status

Unit Fault flags (2nd word reserved, currently not

used)

1

16 bit

Integer

R 17

11

T80 Warning Status

Unit Warning flags, bit defined

1

16 bit

Integer

R 18

12

T80 2nd Warning Status

Unit Warning flags (2nd word reserved, currently not

used)

1

16 bit

Integer

R 19

13

T80 FW Rev

Firmware revision of the Control BD in ASC, ex. " 1".

1

16 bit

Integer

R 20

14

Relay Number to read/write

Relay number to access data (0 - Relay 1, 1 - Relay 2,

2 - Relay 3)

1

16 bit

Integer

RW 21

15

Relay Type

Read/Write Relay Type (0 - Fault Type, 1 - Alarm

Type, 2 - Disabled, 3 - Timed)

1

16 bit

Integer

RW Y 22

16

Per the Modbus Application Protocol Specification (V1.1b)

Page 69 Model T80

Relay ON Setpoint (hi word)

Read/Write Relay ON Setpoint (byte 3 and byte 2)

2

32 bit

Floating

Point

RW

Y

23

17

Relay ON Setpoint (lo word)

Read/Write Relay ON Setpoint (byte 1 and byte 0)

24

18

Relay OFF Setpoint (hi

word)

Read/Write Relay OFF Setpoint (byte 3 and byte 2)

2

32 bit

Floating

Point

RW

Y

25

19

Relay OFF Setpoint (lo

word)

Read/Write Relay OFF Setpoint (byte 1 and byte 0)

26

1A

Relay ON Delay (hi word)

Read/Write Relay turn on Delay time (byte 3 and

byte 2)

2

32 bit

Floating

Point

RW

Y

27

1B

Relay ON Delay (lo word)

Read/Write Relay turn on Delay time (byte 1 and

byte 0)

28

1C

Relay OFF Delay (hi word)

Read/Write Relay turn off Delay time (byte 3 and

byte 2)

2

32 bit

Floating

Point

RW

Y

29

1D

Relay OFF Delay (lo word)

Read/Write Relay turn off Delay time (byte 1 and

byte 0)

30

1E

Relay Energized State

Read/Write Relay 0 - Energized, 1 - De-Energized

1

16 bit

Integer

RW Y 31

1F

Relay Expiration

Read/Write Expiration Time, used with alarm type (0

- None, 2 - 5min., 3 - 10min., 4 - 15min., 6 - 30min.)

1

16 bit

Integer

RW Y 32

20

Relay Period

Read/Write Timed Relay Period (0 - 15min., 1 -

30min., 2 - 1hr., 3 - 2hr., 4 - 4hr., 5 - 8hr., 6 - 24hr.)

1

16 bit

Integer

RW Y 33

21

Relay Duration

Read/Write Timed Relay Duration (0 - 15sec., 1 ­30sec., 2 - 1min., 3 - 2min., 4 - 5min., 5 - 15min., 6 ­10min.)

1

16 bit

Integer

RW Y 34

22

Relay Hold Time

Read/Write Timed Relay Hold Time (0 - Off, 1 - held
for the duration time, 2 - duration + 15sec., 3 - duration
+ 30sec., 4 - duration + 1min., 5 - duration + 2min., 6 ­duration + 5 min., 7 - duration + 15min., 8 - duration +
30min.)

1

16 bit

Integer

RW Y 35

23

4-20 mA Channel Number to

read/write

4-20 mA channel number to access data (0 - 1st 4­20mA, 1 - 2nd 4-20)

1

16 bit

Integer

RW Y 36

24

4-20 Analog Type

Read/Write 4-20 Type (0 - Range, 1 - Temperature, 2

- Sentinel)

1

16 bit

Integer

RW Y 37

25

4-20 Analog Range, 4mA

range (hi word)

Read/Write 4mA range (bytes 3 and 2) applies to
both range and temperature types

2

32 bit

Floating

Point

RW

Y

38

26

4-20 Analog Range, 4mA

range (lo word)

Read/Write 4mA range (bytes 1 and 0) applies to
both range and temperature types

39

27

4-20 Analog Range, 20mA

range (hi word)

Read/Write 4mA range (bytes 3 and 2) applies to
both range and temperature types

2

32 bit

Floating

Point

RW

Y

40

28

4-20 Analog Range, 20mA

range (lo word)

Read/Write 4mA range (bytes 1 and 0) applies to
both range and temperature types

41

29

Long Tag Line number to

read/write

Tag Line number to access data (0 - Line 1, 1 - Line 2)

1

16 bit

Integer

RW Y 42

2A

Long Tag Line 1 (16

characters max)

ASCII character bytes 0 and 1, ex. "AB" A - 65 (41
hexadecimal), B - 66 (42 hex), send 6566 (4142 hex).
The characters permitted are space ' ' (32 base 10, 20
hex) through '}' 125 base 10, 7D hex).

1

16 bit

Integer

RW Y 43

2B

Long Tag Line

ASCII bytes 2 and 3

1

16 bit

Integer

RW Y 44

2C

Long Tag Line

ASCII bytes4 and 5

1

16 bit

Integer

RW Y 45

2D

Long Tag Line

ASCII bytes 6 and 7

1

16 bit

Integer

RW Y 46

2E

Long Tag Line

ASCII bytes 8 and 9

1

16 bit

Integer

RW Y 47

2F

Long Tag Line

ASCII bytes 10 and 11

1

16 bit

Integer

RW Y 48

30

Long Tag Line

ASCII bytes 12 and 13

1

16 bit

Integer

RW Y 49

31

Long Tag Line

ASCII bytes 14 and 15

1

16 bit

Integer

RW Y 50

32

Initiate T80 Parameter

Storage

Signals the user has completed entering the data and
wants it stored. Write any value.

1

16 bit

Integer

RW 51

33

Sensor Channel to

read/write

Sensor channel number to access data (0 - Sensor 1,
1 - Sensor 2)

1

16 bit

Integer

RW 52

34

S80 Mode

Unit operating mode (0-

1

16 bit

Integer

R 53

35

70

Page 71 Model T80

S80 Serial Number (hi word)

Unit Serial Number (32 bit integer hi word)

2

32 bit

Long

Integer

R

54

36

S80 Serial Number (lo word)

Unit Serial Number (32 bit integer lo word)

55

37

S80 Fault Status

1

16 bit

Integer

R 56

38

S80 Sensor Type

Specific S80 sensor type (see S80 Sensor Types tab)

1

16 bit

Integer

R 57

39

S80 Sensor Chemical Type

Specific chemicals the S80 is set to detect (see S80
Sensor Types tab)

1

16 bit

Integer

RW Y 58

3A

S80 Max Range (hi word)

Max sensor range (bytes 3 and 2)

2

32 bit

Floating

Point

R

59

3B

S80 Max Range (lo word)

Max sensor range (bytes 1 and 0)

60

3C

S80 Min Range (hi word)

Min sensor range (bytes 3 and 2)

2

32 bit

Floating

Point

R

61

3D

S80 Min Range (lo word)

Min sensor range (bytes 1 and 0)

62

3E

S80 Sensor Value (hi word)

Current sensor value (bytes 3 and 2)

2

32 bit

Floating

Point

R

63

3F

S80 Sensor Value (lo word)

Current sensor value (bytes 1 and 0)

64

40

S80 Sensor Voltage (hi

word)

Corresponding sensor voltage to the sensor value
(byte 3 and byte 2)

2

32 bit

Floating

Point

R

65

41

S80 Sensor Voltage (lo

word)

Corresponding sensor voltage to the sensor value
(byte 1 and byte 0)

66

42

S80 Sensor Temperature (hi

word)

Sensor Temperature (bytes 3 and 2)

2

32 bit

Floating

Point

R

67

43

S80 Sensor Temperature (lo

word)

Sensor Temperature (bytes 1 and 0)

68

44

S80 Sensor is a Sentinel

Sensor is a Sentinel Type (0 - No, 1 - Yes)

1

16 bit

Integer

R 69

45

S80 Sentinel Life %

% of Sensor life remaining

1

16 bit

Integer

R 70

46

S80 Sentinel Vs (hi word)

Scaled Sentinel Voltage (in mV) normalized to Vo
(bytes 3 and 2)

2

32 bit

Floating

Point

R

71

47

S80 Sentinel Vs (lo word)

Scaled Sentinel Voltage (in mV) normalized to Vo
(bytes 1 and 0)

72

48

S80 Sentinel Vo (hi word)

Sentinel 100% value (in mV) on the life relative to 0V
(bytes 3 and 2)

2

32 bit

Floating

Point

RW

Y

73

49

S80 Sentinel Vo (lo word)

Sentinel 100% value (in mV) on the life relative to 0V
(bytes 1 and 0)

74

4A

S80 Sentinel Range (hi word)

Sentinel Range (bytes 3 and 2)

2

32 bit

Floating

Point

RW

Y

75

4B

S80 Sentinel Range (lo word)

Sentinel Range (bytes 1 and 0)

76

4C

Sensor Full Name (18

characters max)

ASCII character bytes 0 and 1, ex. "AB" A - 65 (41
hexidecimal), B - 66 (42 hex), send 6566 (4142 hex).
The characters permitted are space ' ' (32 base 10, 20
hex) through '}' 125 base 10, 7D hex).

1

16 bit

Integer

RW Y 77

4D

Sensor Full Name

ASCII bytes 2 and 3

1

16 bit

Integer

RW Y 78

4E

Sensor Full Name

ASCII bytes 4 and 5

1

16 bit

Integer

RW Y 79

4F

Sensor Full Name

ASCII bytes 6 and 7

1

16 bit

Integer

RW Y 80

50

Sensor Full Name

ASCII bytes 8 and 9

1

16 bit

Integer

RW Y 81

51

Sensor Full Name

ASCII bytes 10 and 11

1

16 bit

Integer

RW Y 82

52

Sensor Full Name

ASCII bytes 12 and 13

1

16 bit

Integer

RW Y 83

53

Sensor Full Name

ASCII bytes 14 and 15

1

16 bit

Integer

RW Y 84

54

Sensor Full Name

ASCII bytes 16 and 17

1

16 bit

Integer

RW Y 85

Sensor Abbreviated Name (8

characters max)

ASCII character bytes 0 and 1, ex. "AB" A - 65 (41
hexidecimal), B - 66 (42 hex), send 6566 (4142 hex).
The characters permitted are space ' ' (32 base 10, 20
hex) through '}' 125 base 10, 7D hex).

1

16 bit

Integer

RW Y 86

56
Sensor Abbreviated Name

ASCII bytes 2 and 3

1

16 bit

Integer

RW Y 87

57

Sensor Abbreviated Name

ASCII bytes 4 and 5

1

16 bit

Integer

RW Y 88

58

Sensor Abbreviated Name

ASCII bytes 6 and 7

1

16 bit

Integer

RW Y 89

59

Initiate S80 Storage

Signals the user has completed entering the data and
wants it stored. Write any value.

1

16 bit

Integer

W 90

5A

Cal log number to read

Cal log number to read (0 - Cal Log 1, 1 - Cal Log 2, 2 ­Cal Log 3)

1

16 bit

Integer

RW 91

5B

S80 Cal Log slope (hi word)

(bytes 3 and 2)

2

32 bit

Floating

Point

R

92

5C

S80 Cal Log slope (lo word)

(bytes 1 and 0)

93

5D

S80 Cal Log offset (hi word)

(bytes 3 and 2)

2

32 bit

Floating

Point

R

94

5E

S80 Cal Log offset (lo word)

(bytes 1 and 0)

95

5F

S80 Cal Log offset Voltage

(hi word)

(bytes 3 and 2)

2

32 bit

Floating

Point

R

96

60

S80 Cal Log offset Voltage

(lo word)

(bytes 1 and 0)

97

61

FAULT STATUS

Bit #

bit meaning

0

Memory Error, either a Program Flash, RAM or NVM RAM checksum error has occurred

1

Input Voltage Out Of Tolerance

2

The On Board +12V is Out of Tolerance

3

The On Board +3.3V is Out of Tolerance

4

The Transmitter has lost communication link with the Sensor

5

There is no Sensor connected

6

Sensor Calibration Failed

7

Relay 1 on-time expired

8

Relay 2 on-time expired

9

Relay 3 on-time expired

10

Sentinel Error (useable life has expired)

11

Sentinel Poisoned

12

Membrane Error

13

NU

14

NU

15

NU

Bit #

bit meaning

0

The Sensor has changed from previously connect Sensor

1

Not Used (NU)

2

NU

3

NU

4

NU

5

NU

6

NU

7

NU 8 NU 9 NU

10

NU

11

NU

12

NU

13

NU

14

NU

15

NU

WARNING STATUS

72

SENSOR TYPE

Data

Meaning

Decimal

Hexadecimal

Chemical

Sensor Type

Measurement

Units

0

0000

Unknown
Chemical

None

None

1

0001

Ammonia

mV

ppm

2

0002

Ammonium

mV

ppm

3

0003

Bromide

mV

ppm

4

0004

Calcium

mV

ppm

5

0005

Chloride

mV

ppm

6

0006

Conductivity

Conductivity

S

7

0007

Cupric

mV

ppm

8

0008

Cyanide

mV

ppm

9

0009

DO

mV

ppm

10

000A

DO

mV

% saturation

11

000B

DO

mV

mg/L

12

000C

Fluoride

mV

ppm

13

000D

Hardness (CaCO₃)

mV

ppm

14

000E

Nitrate

mV

ppm

15

000F

ORP

mV

mVa

16

0010

pH

mV

none

17

0011

Potassium

mV

ppm

18

0012

Resistivity

Conductivity

Ohm (W)

19

0013

Silver

mV

ppm

20

0014

Sodium

mV

ppm

21

0015

Sulfide

mV

ppm

22

0016

Turbidity

TR6

FNU

23

0017

Turbidity

TR6

NTU

24

0018

Turbidity

TR6

ppm

25

0019

Turbidity

TR6

mg/L

26

001A

Turbidity

TR6

% solid

27

001B

DO

DO80

ppm

28

001C

DO

DO80

% saturation

29

001D

DO

DO80

mg/L

30

001E

Calcium

mV

mg/L

31

001F

TDS

Conductivity

ppm

32

0020

Nitrite

mV

ppm

33

0021

TCA (max range)

TCA

mg/L

34

0022

TCA (min range)

TCA

mg/L

35

0023

FCA (max range)

FCA

mg/L

36

0024

FCA (min range)

FCA

mg/L

Page 73 Model T80

E. RESISTIVITY TEMPERATURE COMPENSATION

Date

Version

Changes

July 2012

Rev. A

Initial Release

Feb. 2013

Rev. B

Conductivity Resistivity specifications added

June 2013

Rev. C

TRITON® DO80 and TR6 added

July 2013

Rev. D

Conductivity Calibrations added

July 2013

Rev. E

MODBUS Register update

May 2014

Rev. F

2 Channel addition, MODBUS Register update

July 2014

Rev. G

Resistivity Calibrations added

August 2014

Rev. H

S80 Table corrected

August 2014

Rev. I

Icons deleted

The temperature coefficient of pure water changes with concentration and temperature. The graph below
shows the % change per °C for 18.2 MΩ water. For the range of 20°- 40°C the mean value is -5% per °C, this is
the default value set in the Model T80. The temperature coefficient of 10 MΩ water drops to a mean value of

-2.6%. The standard Resistivity temperature coefficient of -2.0%/°C is valid for all values below 1.0 MΩ water.

The Temperature Coefficient is set in CONFIG→SENSOR→T COMP→-5.000%

F. SOFTWARE HISTORY

74