Critical Environment Technologies LPT-A Series Operation Manual

Operation Manual

Rev. H | 2018.04

LPT-A Analog Transmitter

www.critical-environment.com

LPT-A - Operation Manual Rev. H | 2018.04

TABLE OF CONTENTS

1 POLICIES ..........................................................................................................5

1.1 Important Note ................................................................................................5

1.2 Warranty Policy ................................................................................................6

1.3 Service Policy ...................................................................................................6

1.4 Copyrights ........................................................................................................7

1.5 Disclaimer ........................................................................................................8

1.6 Revisions ..........................................................................................................8

2 INTRODUCTION .............................................................................................9

2.1 General Description ..........................................................................................9

2.2 Key Features ...................................................................................................10

3 INSTRUMENT SPECIFICATIONS .................................................................11

3.1 Technical Speci cations ..................................................................................11

3.2 Standard Enclosure Dimensions .....................................................................14

4 SENSOR SPECIFICATIONS ...........................................................................15

4.1 List of Available Internal Sensors ....................................................................15

4.2 List of Available ESH-A Remote Sensors .........................................................17

4.3 Special Considerations for Sensors .................................................................17

4.4 Calibration Extending Firmware (CEF) and Sensor Aging................................19

5 FEATURES & FUNCTIONS ............................................................................19

5.1 Exterior Enclosure ..........................................................................................19

5.2 Interior System Layout ...................................................................................21

5.2.1 Electrochemical Sensor Board .........................................................................21

5.2.2 Solid State (Internal) Sensor Board .................................................................22

5.2.3 Solid State (Remote) Sensor Board ..................................................................23

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6 INSTALLATION ..............................................................................................24

6.1 General Safety Warnings ................................................................................24

6.2 Protection Against Electrical Risks ..................................................................25

6.3 Protection Against Mechanical Risks ..............................................................25

6.4 System Installation ........................................................................................26

6.4.1 Wet Environment Considerations ....................................................................26

6.4.2 EMI and RF Interference Considerations ..........................................................27

6.5 Sensor Mounting Heights ...............................................................................27

6.6 Enclosure Mounting Components ..................................................................29

6.6.1 Enclosure Base ................................................................................................29

6.6.2 Enclosure Bottom ............................................................................................30

6.7 Wiring Connections ........................................................................................30

6.7.1 Power Connection ...........................................................................................31

Wiring Example: 3-Wire ..................................................................................31

Wiring Example: 4-Wire ..................................................................................31

6.7.2 Relay Connection ............................................................................................32

Wiring Example: Relay ....................................................................................32

6.7.3 Wiring LPT-A to Remote ESH Sensor (dongle style) .........................................33

Wiring Example: Remote ESH (dongle style) Sensor .......................................33

6.7.4 Wiring LPT-A to ESH-A Remote Sensor ............................................................34

Wiring Example: ESH-A Remote Sensor ..........................................................34

6.7.5 Wire Gauge vs Run Length...............................................................................35

6.7.6 Open Loop ....................................................................................................... 36

7 SYSTEM OPERATION & CONFIGURATION ................................................37

7.1 Power Up and Warm-up ................................................................................. 37

7.2 Display Select ................................................................................................. 38

7.3 Enable / Disable the Buzzer ............................................................................ 39

7.4 Selecting the Output Signal ...........................................................................39

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7.5 Fault Detection...............................................................................................40

7.6 Test Function ..................................................................................................40

7.7 Relay Operation / Setting the “Alarm” Level ...................................................41

8 CALIBRATION ................................................................................................43

8.1 Calibration Speci cations ...............................................................................43

8.1.1 Gas ..................................................................................................................43

8.1.2 Regulators & Flow ...........................................................................................44

8.1.3 Adapters..........................................................................................................44

8.1.4 Humidi er .......................................................................................................44

8.1.5 Calibration Frequency .....................................................................................44

8.1.6 Gas Testing Frequency (Bump Testing) ............................................................45

8.1.7 Sticky Gases.....................................................................................................45

8.1.8 Non-Intrusive Calibration ................................................................................45

8.2 Setting the Calibration Gas Level....................................................................46

8.3 Calibrating the Internal Sensor ......................................................................46

8.4 Calibrating an ESH-A Remote Sensor Connected to an LPT-A .........................53

8.4.1 Zero and Span Calibration of a Responsive ESH-A Remote Sensor ...................53

8.4.2 Zero Calibration of a New or Replacement ESH-A Remote Sensor .................... 53

8.5 Calibrating an Oxygen Sensor ........................................................................54

9 ACCESSORIES ...............................................................................................59

9.1 Splash Guard ..................................................................................................59

9.2 Magnetic Wand ..............................................................................................59

9.3 Metal Protective Guard ..................................................................................60

9.4 Calibration Kit ................................................................................................60

10 MAINTENANCE ..........................................................................................61

11 TROUBLE SHOOTING ................................................................................62

Rev. H | 2018.04 LPT-A - Operation Manual

1 POLICIES

1.1 Important Note

Read and understand this manual prior to using this instrument. Carefully read the warranty policy, service policy, notices, disclaimers and revisions on the following pages.

This product must be installed by a quali ed electrician or factor y trained technician and according to instructions indicated in this manual. This instrument should be inspected and calibrated regularly by a quali ed and trained technician. For more information, refer to Section 8 Calibration and Section 10 Maintenance of this manual.

This instrument has not been designed to be intrinsically safe. For your safety, do not use it in classi ed hazardous areas (explosion-rated environments).

INSTRUMENT SERIAL NUMBER:

______________________________________________________

PURCHASE DATE:

______________________________________________________

PURCHASED FROM:

______________________________________________________

LPT-A - Operation Manual Rev. H | 2018.04

1.2 Warranty Policy

Critical Environment Technologies Canada Inc. (CETCI), also referred to as the manufacturer, warrants this instrument, (excluding sensors, battery packs, batteries, pumps and  lters) to be free from defects in materials and workmanship for a period of two years from the date of purchase

from our facility. The sensors have a warranty period of one year on a pro-rated basis from the date of purchase from our facility. If the product should become defective within this

warranty period, we will repair or replace it at our discretion.

The warranty status may be a ected if the instrument has not been used and maintained per the instructions in this manual or has been abused, damaged, or modi ed in any way. This instrument is only to be used for purposes stated herein. The manufacturer is not liable for auxiliary interfaced equipment or consequential damage.

Due to ongoing research, development, and product testing, the manufacturer reserves the right to change speci cations without notice. The information contained herein is based on data considered accurate. However, no warranty is expressed or implied regarding the accuracy of this data.

All goods must be shipped to the manufacturer by prepaid freight. All returned goods must be pre-authorized by obtaining a Returned Merchandise Authorization (RMA) number. Contact the manufacturer for a number and procedures required for product transport.

1.3 Service Policy

CETCI maintains an instrument service facility at the factory. Some CETCI distributors / agents may also have repair facilities; however, CETCI assumes no liability for service performed by anyone other than CETCI personnel.

Repairs are warranted for 90 days after date of shipment (sensors have individual warranties). Should your instrument require non-warranty repair, you may contact the distributor from whom it

Rev. H | 2018.04 LPT-A - Operation Manual

was purchased or you may contact CETCI directly.

Prior to shipping equipment to CETCI, contact our o ce for an RMA #. All returned goods must be accompanied with an RMA number.

If CETCI is to do the repair work, you may send the instrument, prepaid, to:

Attention: Service Department Critical Environment Technologies Canada Inc. Unit 145, 7391 Vantage Way Delta, BC, V4G 1M3

Always include your Returned Merchandise Authorization (RMA) number, address, telephone number, contact name, shipping / billing information, and a description of the defect as you perceive it. You will be contacted with a cost estimate for expected repairs, prior to the performance of any service work.

For liability reasons, CETCI has a policy of performing all needed repairs to restore the instrument to full operating condition.

Pack the equipment well (in its original packing if possible), as we cannot be held responsible for any damage incurred during shipping to our facility.

1.4 Copyrights

This manual is subject to copyright protection; all rights are reserved. Under international and domestic copyright laws, this manual may not be copied or translated, in whole or in part, in any manner or format, without the written permission of CETCI.

LPT-A - Operation Manual Rev. H | 2018.04

1.5 Disclaimer

Under no circumstances will CETCI be liable for any claims, losses or damages resulting from or arising out of the repair or modi cation of this equipment by a party other than CETCI service technicians, or by operation or use of the equipment other than in accordance with the printed instructions contained within this manual or if the equipment has been improperly maintained or subjected to neglect or accident. Any of the forgoing will void the warranty.

Under most local electrical codes, low voltage wires cannot be run within the same conduit as line voltage wires. It is CETCI policy that all wiring of our products meet this requirement.

It is CETCI policy that all wiring be within properly grounded (earth or safety) conduit.

1.6 Revisions

This manual was written and published by CETCI. The manufacturer makes no warranty or representation, expressed or implied including any warranty of merchantability or  tness for purpose, with respect to this manual.

All information contained in this manual is believed to be true and accurate at the time of printing. However, as part of its continuing e or ts to improve its products and their documentation, the manufacturer reserves the right to make changes at any time without notice. Revised copies of this manual can be obtained by contacting CETCI or visiting www.critical-environment.com.

Should you detect any error or omission in this manual, please contact CETCI at the following address:

Critical Environment Technologies Canada Inc. Unit 145, 7391 Vantage Way, Delta, BC, V4G 1M3, Canada Toll Free: +1.877.940.8741

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Telephone: +1.604.940.8741 Fax: +1.604.940.8745 Email: marketing@cetci.com Website: www.critical-environment.com

In no event will CETCI, its o cers or employees be liable for any direct, special, incidental or

consequential damages resulting from any defect in any manual, even if advised of the possibility of such damages.

2 INTRODUCTION

2.1 General Description

Thank you for purchasing our LPT-A Analog Transmitter.

The LPT-A transmitter is a single sensor, analog transmitter available with a wide range of sensors and sensor types of continuous monitoring of gases or oxygen in non-hazardous (non-explosion rated) environments such as commercial HVAC and light industrial applications.

Operating as an analog transmitter or a stand-alone  xed system, the LPT-A o ers a back lit LCD display, an internal audible alarm, one dry relay contact, a jumper selectable 4-20 mA or 0 - 10 VDC analog output signal, 3-wire VDC or 4-wire VAC power, a thermal resetting fuse and temperature compensation all in a RoHS compliant package. It comes in a standard with a water / dust tight, corrosion resistant ABS / polycarbonate enclosure with a hinged, secured door. With the optional splash guard installed, the enclosure is IP54 rated and ideal for use in water spray or washdown applications.

LPT-A transmitter is available with internal or remote sensor options. All LPT-A transmitters operate by di usion. The sensors utilized in this device are accurate enough to measure to Occupational

LPT-A - Operation Manual Rev. H | 2018.04

Health & Safety (OHS) hazardous levels for toxic gases.

If after reading through the manual, you have any questions, please do not hesitate to contact our service department for technical support.

2.2 Key Features

• Single channel

• Wide range of internal sensor types including electrochemical, solid state and TVOC

• Remote combustible and PID sensor options

• Graphic LCD display (user selectable function)

• Audible alarm

• 3-wire VDC or 4-wire VAC power

• 24 volt DC or AC power (nominal)

• Linear 4 - 20 mA or 0 - 10 volt output signal

• 1 dry contact relay, 30 volt 2 amps maximum

• Standard water / dust tight, corrosion resistant enclosure (drip proof). With optional splash guard installed, the enclosure is IP54 rated.

• Copper coated interior to reduce RF interference

• RoHS compliant circuit boards

• Includes sensor Calibration Extending Firmware (CEF) for some electrochemical sensors

• Auto resetting fuse

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3 INSTRUMENT SPECIFICATIONS

3.1 Technical Speci cations

MECHANICAL

Enclosure

Weight 400 g (14 oz)

Size 127 mm x 127 mm x 53.34 mm (5.0 in x 5.0 in x 2.1 in )

ELECTRICAL

Power Requirement

3-wire mode 4-wire mode

Current Draw 125 mA @ 24 VDC

Wiring

Fuses Automatic resetting thermal

ABS / Polycarbonate, IP54 rating with splash guard installed. Copper coated interior to reduce RF interference.

16 - 30 VDC, 3 W, Class 2 12 - 27 VAC, 50-60 Hz, 3 VA, Class 2 Use Class 2 transformer. See Section 6.7 Wiring Connections.

VDC (or ground referenced AC) three conductor shielded 18 awg (or larger) stranded within conduit VAC four conductor shielded 18 awg stranded within conduit (refer to Section 6.7.5 Wire Gauge vs. Run Length)

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USER INTERFACE

Graphic LCD, grey border. Text prompting for calibration operation

Display

and fault indications. Installer con gurable to suppress all other displays.

Magnetic Sensors

Using the magnetic wand to initiate calibration without opening enclosure.

INPUTS / OUTPUTS

Linear 4 - 20 mA

Maximum 216 Ω load (wiring plus termination resistor) @ 12 VDC

Outputs

Maximum 316 Ω load (wiring plus termination resistor) @ 12 VAC

Voltage 0 - 10 volt Minimum 1k ohm load

Relay One SPDT dry contact relay, rated 2A @ 30V maximum

ENVIRONMENTAL

-20°C to 40°C (-4°F to 104°F) NOTE: Low temperature option available to -40°C (-40°F) (Sensor

Operating Temperature

dependent, some extremely cold applications may require a small internal silicone heater to maintain temperature stability for sensor. Contact CETCI for details and pricing.)

Operating Humidity 15 - 90% RH non-condensing

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CERTIFICATIONS

Model: LPT-A-XXX S/N: LPTAE1601H00374 Rating: 16-30 VDC, 3W, Class 2 12-27 VAC, 50-60 Hz 3VA, Class 2

CERTIFIED FOR ELECTRIC SHOCK & ELECTRICAL FIRE HAZARD ONLY. LA CERTIFICATION ACNOR COUVRE UNIQUEMENT LES RISQUES DE CHOC ELECTRIQUE ET D’INCENDIE D’ORIGINE ELECTRIQUE.

Conforms to: CSA-C22.2 No. 205-M1983 (R2009), UL508 (Edition 17):2007 Conforms to: EMC Directive 2004/108/EC, EN 50270:2006, Type 1, EN61010 Conforms to: FCC. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

LPT-A - Operation Manual Rev. H | 2018.04

3.2 Standard Enclosure Dimensions

127 mm (5.0 in )

Above dimensions are shown with optional splash guard. Without splash guard, thickness is

53.34 mm (2.1 in). The area required for enclosure door to be open 90 degrees is 178 mm (7 in) or 254 mm (10 in) for fully open. With the splash guard, the enclosure has an IP54 rating.

NOTE: During calibration, the sensor response time will be slower with a splash guard installed.

NOTE: Splash guard is not available for transmitters with internal electrochemical Ozone (O3),

Hydrogen Chloride (HCL) or Chlorine (Cl2) sensors.

61 mm (2.4 in )

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4 SENSOR SPECIFICATIONS

4.1 List of Available Internal Sensors

Internal Electrochemical Sensors

Ammonia (NH3) LPT-A-NH3 0 - 500 ppm 2 years

Carbon Monoxide (CO) LPT-A-COA 0 - 200 ppm 3 years

Carbon Monoxide (CO) LPT-A-COB 0 - 200 ppm 6 years

Chlorine (Cl2) LPT-A-CL2 0 - 5 ppm 3 years

Chlorine Dioxide (ClO2) LPT-A-CLO2 0 - 1.0 ppm 2 years

Ethylene (C2H4) LPT-A-C2H4 0 - 200 ppm 2 years

Ethylene Oxide (C2H4O) LPT-A-EETO 0 - 20 ppm 2 years

Fluorine (F2) LPT-A-F2 0 - 2 ppm 1 - 2 years

Formaldehyde (CH2O) LPT-A-CH2O 0 - 5 ppm 2 years

Hydrogen (H2) LPT-A-EH2 0 - 2,000 ppm 2 years

Hydrogen Chloride (HCl) LPT-A-HCL 0 - 20 ppm 2 years

Hydrogen Cyanide (HCN) LPT-A-HCN 0 - 100 ppm 2 years

Hydrogen Fluoride (HF) LPT-A-HF 0 - 10.0 ppm 1 - 2 years

Hydrogen Sulphide (H2S) LPT-A-H2S 0 - 50 ppm 2+ years

Hydrogen Sulphide (H2S) LPT-A-H2SB 0 - 50 ppm 5+ years

Nitric Oxide (NO) LPT-A-NO 0 - 100 ppm 2 years

Part Number Range Lifespan

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Internal Electrochemical

Part Number Range Lifespan

Sensors continued...

Nitrogen Dioxide (NO2) LPT-A-NO2A 0 - 10 ppm 3 years

Nitrogen Dioxide (NO2) LPT-A-NO2B 0 - 10 ppm 6 years

Oxygen (O2) LPT-A-O2 0 - 25% Vol 3 years

Ozone (O3) LPT-A-O3 0 - 2 ppm 2 years

Phosphine (PH3) LPT-A-PH3 0 - 5 ppm 2 years

Silane (SiH4) LPT-A-SIH4 0 - 20 ppm 2 years

Sulphur Dioxide (SO2) LPT-A-SO2 0 - 20 ppm 2+ years

Internal Solid State Sensors Part Number Range Lifespan

Refrigerant (R22) LPT-A-SR22 0 - 2,000 ppm 5 years

Refrigerant (R134A) LPT-A-SR134A 0 - 2,000 ppm 5 years

Refrigerant (R402A) LPT-A-SR402A 0 - 2,000 ppm 5 years

Refrigerant (R404A) LPT-A-SR404A 0 - 2,000 ppm 5 years

Refrigerant (R407C) LPT-A-SR407C 0 - 2,000 ppm 5 years

Refrigerant (R410A) LPT-A-SR410A 0 - 2,000 ppm 5 years

Refrigerant (R422D) LPT-A-SR422D 0 - 2,000 ppm 5 years

Refrigerant (R438A) LPT-A-SR438A 0 - 2,000 ppm 5 years

Refrigerant (R507) LPT-A-SR507 0 - 2,000 ppm 5 years

TVOC (Isobutylene) LPT-A-STVOC 0 - 500 ppm 5 years

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Internal Catalytic

Part Number Range Lifespan

(Combustible) Sensors

Hydrogen (H2) LPT-A-CH2-100 0 - 100% LEL 5 years

Methane (CH4) LPT-A-CCH4-100 0 - 100% LEL 5 years

Propane (C3H8) LPT-A-CC3H8-100 0 - 100% LEL 5 years

4.2 List of Available ESH-A Remote Sensors

ESH-A Remote Sensors - Catalytic (Combustible)

Hydrogen (H2) ESH-A-CH2-100 0 - 100% LEL 5 years

Methane (CH4) ESH-A-CCH4-100 0 - 100% LEL 5 years

Propane (C3H8) ESH-A-CC3H8-100 0 - 100% LEL 5 years

ESH-A Remote Sensors - TVOC PID

TVOC PID ESH-A-SPL 0 - 30 ppm

TVOC PID ESH-A-SPH 0 - 300 ppm

usage / application dependent

4.3 Special Considerations for Sensors

If you install the LPT-A when it arrives, the sensor will not require a long warm up period (about 5 minutes for Ammonia and Nitrogen dioxide and 2 minutes for all the others). The sensors go through a burn in period at our factory so they are ready for operation upon arrival. If the device is not installed within two weeks of delivery, the sensor may require a longer warm up time to stabilize (approximately 48 hours) and provide accurate readings.

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After installing an LPT-A with an Oxygen sensor, leave it to warm up for 2 hours before looking at the readings.

After a substantial warm up period, an Ethylene Oxide sensor should be zeroed on site if the ambient temperature is above 22°C (71.6°F). This particular sensor has a drift factor that can be as

much as 1 ppm if the temperature rises to 25°C (77°F). With the low set point you could experience false alarms.

For an R11 refrigerant sensor, allow 30 minutes after power up before considering the LPT-A’s

readings valid. The sensor’s response to R11 refrigerant and to humidity levels can a ect the readings of the LPT-A and can take up to 30 minutes after power up to recover and stabilize.

During calibration, when  owing span gas on an Ammonia sensor, if the reading climbs higher than the calibration point after applying gas for 3 minutes, use that reading as the calibration point. It should be around 300 ppm. Ozone sensors are reactive to temperature changes and will drift.

Silicone, lead and chlorinated hydrocarbon vapours can poison catalytic sensors.

A bump test will help you determine if a sensor requires calibration. If the sensor still does not respond as it should after a successful calibration, it probably requires replacing.

Temperature a ects calibration. It is impor tant to ensure the gas is at the appropriate temperature during calibration. If the sensor is being used in an extreme temperature range, calibration should be done in that same temperature range.

Rev. H | 2018.04 LPT-A - Operation Manual

4.4 Calibration Extending Firmware (CEF) and Sensor Aging

Some LPT-A systems with certain electrochemical sensors have been programmed with our Calibration Extending Firmware (CEF). This  rmware takes into consideration the aging of the sensors so that less frequent calibrations are acceptable in less-critical applications such as parking garages. The system tracks the age of the sensor and automatically compensates for the reduced output of the sensor as it ages.

5 FEATURES & FUNCTIONS

5.1 Exterior Enclosure

•

‘

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NUMBER FEATURE FUNCTION

•

‘

Door Hinge Secures door

Display with gray border

Door Screw Secures door

Sensor Opening Allows gas di usion into sensor

Padlock Opening For security padlock

Magnetic Calibration Trigger Point To enter calibration

Indicates transmitter operation

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Critical Environment Technologies LPT-A Series Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual