Hoffer Flow Controls HRT1 User Manual

HP-313

July 2009

Model: HRT1

Flow Rate Indicator/Totalizer With

HART Communications Protocol

USER’S MANUAL

HP-313

April 2018

107 Kitty Hawk Lane ● P.O. Box 2145 ● Elizabeth City, NC 27909

1-800-628-4584 ● [phone] ● Fax [phone]

www.hofferflow.com email: [email protected]

HFC 9907-B

_________________________________________________________

NOTICE

Hoffer Flow Controls, Inc. makes no warranty of any kind with regard to this
material, including, but not limited to, the implied warranties of merchantability
and fitness for a particular purpose.

This manual has been provided as an aid in installing, connecting, calibrating,
operating, and servicing this unit. Every precaution for accuracy has been taken in
the preparation of this manual; however, Hoffer Flow Controls, Inc. neither
assumes responsibility for any omissions or errors that may appear nor assumes
liability for any damages that result from the use of the products in accordance
with information contained in the manual.

HOFFER FLOW CONTROLS' policy is to provide a user manual for each item
supplied. Therefore, all applicable user manuals should be examined before
attempting to install or otherwise connect a number of related subsystems.

During installation, care must be taken to select the correct interconnecting wiring
drawing. The choice of an incorrect connection drawing may result in damage to the
system and/or one of the components.

Please review the complete model number of each item to be connected and locate
the appropriate manual(s) and/or drawing(s). Identify all model numbers exactly
before making any connections. A number of options and accessories may be added
to the main instrument, which are not shown on the basic user wiring. Consult the
appropriate option or accessory user manual before connecting it to the system. In
many cases, a system wiring drawing is available and may be requested from
Hoffer Flow Controls.

This document contains proprietary information, which is protected by
copyright. All rights are reserved. No part of this document may be photocopied,
reproduced, or translated to another language without the prior written consent
of Hoffer Flow Controls, Inc.

HOFFER FLOW CONTROLS’ policy is to make running changes, not model
changes, whenever an improvement is possible. This affords our customers the
latest in technology and engineering. The information contained in this
document is subject to change without notice.

THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES,
EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. HFC SHALL

NOT BE LIABLE FOR ANY LOSS OR DAMAGE RESULTING

, DIRECTLY OR INDIRECTLY,

FROM THE USE OR LOSS OF USE OF THE GOODS

. WITHOUT LIMITING THE

GENERALITY OF THE FOREGOING

, THIS EXCLUSION FROM LIABILITY EMBRACES THE

PURCHASER'S EXPENSES FOR DOWNTIME OR FOR MAKING UP DOWNTIME, DAMAGES

FOR WHICH THE

PURCHASER MAY BE LIABLE TO OTHER PERSONS, DAMAGES TO

PROPERTY

, AND INJURY TO OR DEATH OF ANY PERSONS. HFC NEITHER ASSUMES

NOR AUTHORIZES ANY PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN
CONNECTION WITH THE SALE OR USE OF

HFC'S GOODS, AND THERE ARE NO ORAL

AGREEMENTS OR WARRANTIES COLLATERAL TO OR AFFECTING THE AGREEMENT

.

PURCHASER'S SOLE AND EXCLUSIVE REMEDY IS THE REPAIR AND/OR REPLACEMENT OF

NONCONFORMING GOODS AS PROVIDED IN THE PRECEDING PARAGRAPHS

. HFC SHALL

NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT

,

INCIDENTAL

, OR CONSEQUENTIAL DAMAGES.

HFC 9907-B

________________________________________________________________

LIMITED WARRANTY POLICY FOR HOFFER FLOW CONTROLS

________________________________________________________________

HOFFER FLOW CONTROLS, INC. ("HFC") warrants HFC's Precision Series and API
Series of turbine flowmeters to be free from defects in material and workmanship under
normal use and service, only if such goods have been properly selected for the service
intended, properly installed and properly operated and maintained as described in the
turbine flowmeter manual. Reference "turbine flowmeter manual" for specific details. This
warranty shall extend for a period of five (5) years from the date of shipment to the
original purchaser and covers the Precision Series, API Series and CT Series of
flowmeters supplied with their standard hybrid ceramic ball bearings only. All other HFC
products carry a one (1) year warranty. This warranty is extended only to the original
purchaser ("Purchaser"). Purchaser's sole and exclusive remedy is the repair and/or

replacement of nonconforming goods as provided in the following paragraphs.

In the event Purchaser believes the Hoffer product is defective, the product must be
returned to HFC, transportation prepaid by Purchaser, within the appropriate warranty
period relative to the product. If HFC's inspection determines that the workmanship or
materials are defective and the required maintenance has been performed and, has been
properly installed and operated, the product will be either repaired or replaced, at HFC's
sole determination, free of additional charge, and the goods will be returned, transportation
paid by HFC, using a transportation method selected by HFC.

Prior to returning the product to HFC, Purchaser must obtain a Returned Material
Authorization (RMA) Number from HFC's Customer Service Department within 30 days
after discovery of a purported breach of warranty, but not later than the warranty period;
otherwise, such claims shall be deemed waived. See the Return Requests/inquiries Section
of this manual.

If HFC's inspection reveals the Hoffer product to be free of defects in material and
workmanship or such inspection reveals the goods were improperly used, improperly
installed, and/or improperly selected for service intended, HFC will notify the purchaser in
writing and will deliver the goods back to Purchaser upon receipt of Purchaser's written
instructions and agreement to pay the cost of transportation. If Purchaser does not respond
within thirty (30) days after notice from HFC, the goods will be disposed of in HFC's
discretion.

HFC does not warrant the product to meet the requirements of any safety code of any
state, municipality, or other jurisdiction, and Purchaser assumes all risk and liability
whatsoever resulting from the use thereof, whether used singlely or in combination with
other machines or apparatus.

This warranty shall not apply to any HFC product or parts thereof, which have been
repaired outside HFC's factory or altered in any way, or have been subject to misuse,
negligence, or accident, or have not been operated in accordance with HFC's printed
instructions or have been operated under conditions more severe than, or otherwise
exceeding, those set forth in the specifications.

________________________________________________________________

FOR NON-WARRANTY REPAIRS OR CALIBRATIONS, consult HOFFER FLOW CONTROLS

for current repair/calibration charges. Have the following information available

BEFORE

contacting HOFFER FLOW CONTROLS:

1.

P.O. number to cover the COST of the repair/calibration,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems relative to the product.

________________________________________________________________

HRT1 HP-313

CONTENTS

1. INTRODUCTION------------------------------------------------1

Model Number Designation--------------------------------------------- 3

2. SPECIFICATIONS AND PRODUCT FEATURES-------7

2.1 General ---------------------------------------------------------- 7

2.2 Inputs ------------------------------------------------------------ 8

2.3 DC Power/Loop Powered------------------------------------ 8

2.4 Analog Output ------------------------------------------------- 9

2.5 Pulse Output---------------------------------------------------- 9

2.6 Alarm 1 and Alarm 2----------------------------------------- 9

2.7 Physical---------------------------------------------------------- 9
Product Features-------------------------------------------------------- 9

3. INSTALLATION----------------------------------------------- 11

3.1 4-20 mA Current Loop--------------------------------------13

3.2 Flowmeter Input----------------------------------------------15

3.3 Pulse Output---------------------------------------------------16

3.4 Alarm Outputs------------------------------------------------16

3.5 Wiring Summary---------------------------------------------18

4. CONFIGURATION-------------------------------------------- 19

4.1 Local Configuration -----------------------------------------19

4.2 Default Configuration---------------------------------------22

5. OPERATION AND MAINTENANCE--------------------- 23

5.1 Display Parameters ------------------------------------------23

5.2 Saving Grand Total------------------------------------------23

5.3 Clearing the Total--------------------------------------------23

5.4 System Response Time --------------------------------------24

5.5 Error Conditions ---------------------------------------------24

5.6 Battery Replacement Indication --------------------------25

6. HART COMMUNICATIONS------------------------------- 27

6.1 Dynamic Variables-------------------------------------------27

6.2 Universal Commands----------------------------------------28

6.3 Common-Practice Commands-----------------------------28

6.4 Device-Specific Commands--------------------------------29

6.5 Device Status --------------------------------------------------31

6.6 Additional Device Status------------------------------------32

6.7 EDDL – Process Variables ---------------------------------35

6.8 EDDL – Device Diagnostics --------------------------------36

6.9 EDDL – Online -----------------------------------------------36

7. MAINTENANCE----------------------------------------------- 41

HP-313 HRT1

APPENDIX A – DEFAULT CONFIGURATION------------ 43
APPENDIX B – Declaration and Conformity----------------- 45
APPENDIX C – Installation Drawings and Conditions

for Safe Use for Certified Systems------------------------------- 47

Introduction 1

HRT1 HP-313

1. INTRODUCTION

The HRT1 is a loop-powered microprocessor-based flow rate indicator
and totalizer with HART Field Communications Protocol. The
instrument can accept a low-level signal from a magnetic type pickup
coil, logic level pulse signal, or contact closure on the signal input.
Pulses from the signal input are counted and converted into volume and
rate values based on flowmeter calibration settings in the instrument.
The total volume and flow rate is displayed on a two-line liquid crystal
display (LCD). The top line is an 8-digit Total Volume display and the
bottom is a 5-digit Rate display. A 4-20 mA analog signal proportional
to the flowrate is output on the current loop. The HRT1 is configurable
by way of the instrument keypad or via HART communications.

Figure 1 – HRT1 Front Panel Overview

Optional features include 20-point linearization to correct for
flowmeter non-linearities, a Scaled Pulse Output and 2 Alarm Outputs
configurable for Rate or Total.

The instrument may be housed in a NEMA 4X polycarbonate
enclosure, which may be wall mounted or directly mounted on a
flowmeter using an optional riser. Other options include panel mount
or an EX proof enclosure for hazardous areas.

Introduction 2

HP-313 HRT1

This instrument is designed to conform to the EMC-Directive of the
Council of European Communities 89/336/EEC and the following
standards:

Generic Emission Standard EN 61000-6-3

Residential, Commercial & Light Industry Environment.

Generic Immunity Standard EN 61000-6-1

Residential, Commercial & Light Industry Environment.

Electrostatic discharge requirements EN 61000-4-2

Radiated, radio-frequency, electromagnetic immunity EN 61000-4-3

Electrical fast transient/burst requirements EN 61000-4-4

Immunity to conducted disturbances EN 61000-4-6

Introduction 3

HRT1 HP-313

MODEL NUMBER DESIGNATION

MODEL HRT1

FLOW RATE INDICATOR/TOTALIZER

WITH HART® COMMUNICATIONS PROTOCOL

MODEL HRT1-( A )-( B )-( C )-( D )-( E )-( F )-( G )
ENCLOSURE STYLE
PULSE INPUT

A

NALOG OUTPUT

PULSE OUTPUT

A

LARMS
MOUNTING
SPECIAL FEATURES

ENCLOSURE STYLE

MODEL HRT1-( A )-( )-( )-( )-( )-( )-( )
OPTION ( A )

(2) NEMA 4X ENCLOSURE

(HRT1 MOUNTED BEHIND CLEAR COVER)

(3*) ALUMINUM CASTING POWDER COATED ENCLOSURE (IP66)
(P) PANEL MOUNT ENCLOSURE (IP40)
(PD) PANEL MOUNT ENCLOSURE WITH CLEAR DOOR AND LOCK (IP40)
(4) NEMA 1 ENCLOSURE

(HRT1 MOUNTED TO THE OUTSIDE OF CLEAR COVER FOR DOOR/DRY

INSTALLATION ONLY)

(5) NEMA 4X ENCLOSURE/HRT1 ENCLOSURE
(MOUNTED BEHIND CLEAR COVER WITH SUNSHADE)

(7*) STAINLESS STEEL ENCLOSURE (IP66)

(ALL CONDUIT PORTS ARE 3/4" FNPT)

*OPTIONS FOR ENCLOSURE STYLE 3 AND 7:

(_M) M20 CONDUIT THREAD (NOT ALLOWED FOR USE IN CANADA)
(_S) SUNSHADE

PULSE INPUT
MODEL HRT1-( )-( B )-( )-( )-( )-( )-( )
OPTION

( B )

(M) MAGNETIC COIL, DRY PULSE CONTACT
(R) ISOLATED PULSE, RPM, RPR, HALL EFFECT COILS

Introduction 4

HP-313 HRT1

ANALOG OUTPUT

MODEL HRT1-( )-( )-( C )-( )-( )-( )-( )

OPTION

( C )

(W) WIRED 4-20MA LOOP POWERED

PULSE OUTPUT

MODEL HRT1-(

)-( )-( )-( D )-( )-( )-( )

OPTION

( D )

(5) 0-5 TTL/CMOS
(OC) OPEN COLLECTOR
(V) 8-30 VDC WITH PULLUP TO VDC+

ALARMS

TWO OPTO-ISOLATED ALARMS WITH USER-DEFINED LEVELS FOR RATE
AND/OR TOTAL

MODEL HRT1-( )-( )-( )-( )-( E )-( )-( )

OPTION

( E )

(5) 0-5 TTL/CMOS
(OC) OPEN COLLECTOR
(V) 8-30 VDC WITH PULLUP TO VDC+

MOUNTING

MODEL HRT1-(

)-( )-( )-( )-( )-( F )-( )

OPTION

( F )

(F) NEMA 4X STYLE 2 ENCLOSURE MOUNTED ON TURBINE.
MUST BE USED WITH “X” RISER TURBINE OPTION.

(FHT) 8" LONG TEMPERATURE RISER FOR NEMA 4X STYLE 2
ENCLOSURES MOUNTED ON TURBINE. REQUIRED WHEN
FLUID TEMPERATURES EXCEED 140 DEG. F. USED WITH “X”
RISER TURBINE OPTION.

(FX) STYLE 3 OR STYLE 7 ENCLOSURES MOUNTED ON TURBINE.
MUST BE USED WITH “X” RISER TURBINE OPTION.

(FXHT) 8" LONG TEMPERATURE RISER FOR STYLE 3 OR STYLE 7
ENCLOSURES MOUNTED ON TURBINE. REQUIRED WHEN
TEMPERATURES EXCEEDS 140 DEG. F.
USED WITH “X” RISER TURBINE OPTION.

(NP) ENCLOSURE PIPE MOUNTING KIT; 2" PIPE OR SMALLER.
SPECIFY IF PIPE IS VERTICAL OR HORIZONTAL.

Introduction 5

HRT1 HP-313

SYSTEM CERTIFIED MOUNTING OPTIONS FOR ENCLOSURE STYLE 3 AND 7:

(MX_) METER MOUNTED

NOTE: USED WITH “X” RISER, AND 1" X ¾" SS ADAPTER. PROCESS

TEMP -40°C TO +70°C.

(MA_) METER MOUNTED

NOTE: USE WITH A (X-ATEX) RISER. PROCESS TEMP -40°C

TO +70°C.

(RX_) REMOTE MOUNTED

NOTE: USE WITH “X” RISER. INCLUDES “E2” JUNCTION BOX AND

1" X 3/4" SS ADAPTER.

(RA_) REMOTE MOUNTED

NOTE: USE WITH A (X-ATEX) RISER. INCLUDES “E2” JUNCTION BOX.

UNION OPTIONS:

(___U1) OPTIONAL 1" MALE X 1" FEMALE EX-PROOF UNION

NOTE: USE WITH MX AND RX OPTIONS

(___U2) OPTIONAL 3/4" MALE X 3/4" FEMALE EX-PROOF UNION
NOTE: USE WITH MA AND RA OPTIONS

EXPLOSION-PROOF ENCLOSURE RATINGS:
Canada/US Zones

Ex db IIB+H

2

T6; Gb; Ex tb IIIC T72°C Db; IP66;

Class I, Zone 1, AEx db IIB+H2 T6; Gb; Zone 21, AEx tb IIIC T72°C Db; IP66:
ATEX/IECEX :

II 2 G Ex db IIB+H2 T6 Gb
II 2 D Ex tb IIIC T72°C Db IP66
T1-T6 = -40°C to +70°C

SPECIAL FEATURES

MODEL HRT1-( )-( )-( )-( )-( )-( )-( G )

OPTION

( G )

(CE) CE MARK REQUIRED FOR EUROPE
(SP) ANY SPECIAL FEATURES THAT ARE NOT COVERED IN THE

MODEL NUMBER, USE A WRITTEN DESCRIPTION OF THE -SP.
(X) NO SPECIAL FEATURES.

Introduction 6

HP-313 HRT1

This Page Intentionally Left Blank

Specifications and Product Features 7

HRT1 HP-313

2. SPECIFICATIONS AND PRODUCT FEATURES
General Specifications

2.1 General

Display: LCD, updated every 2.0 seconds.
Total: 8 digits 0.26" high. Resettable using a

magnet, a contact closure to power common
on the RESET input terminal, from the front
panel keypad or via HART communications.

Total Units:

GAL, LIT, FT3, M3, BBL, & “blank”.

Grand Total: 8 digits 0.26" high, non-resettable. Value

stored once per minute in non-volatile
memory. Grand Total is displayed for 15
seconds after pressing the

▲ button.

Rate: 5 digits 0.5" high.

Rate Units: /SEC, /MIN, /HR, & /DAY

K-factor: The pulses per unit of Total (e.g.

pulses/gallon) are configurable in the range

0.001 to 99,999,999.

Linearization: Up to 20 points.

Decimal Points: Decimal Point positions are configurable for

0, .0, .00, or .000 for both rate and total.

Accuracy: Total: 1 count, Rate: 0.01%

Specifications and Product Features 8

HP-313 HRT1

2.2 Inputs

Magnetic Pickup:

Frequency Range: 0.2 Hz to 5000 Hz.
Signal Level: 30 mV

P-P

to 30 V

P-P

.

Opto-Isolated DC Pulse:

Frequency Range: 0 Hz to 3000 Hz.
Signal Type: DC pulse.

High (Logic 1): 4 to 30 VDC

Low (Logic 0): < 1 VDC

Min Pulse width: 0.1 msec

Contact Closure:

Frequency Range: 0 Hz to 5000 Hz
Signal Type: Contact closure, Sig+ Terminal to DC

common

Internal Pull-up: 220 kΩ to +3.3 VDC

Reset:

Signal Type: Contact closure, Reset Terminal to DC

common
Min On: 25 msec
Internal Pull-up: 100 kΩ to +3.3 VDC
External Magnet: Activates internal reed switch

2.3 DC Power/Loop Powered

Voltage: 8 to 30 VDC
Current: < 24 mA
Loop Burden: 8 VDC maximum
Supply Backup: C size Lithium or battery pack for Ex

system
Battery Life: 8 months typical
Protection: Reverse polarity protected

Specifications and Product Features 9

HRT1 HP-313

2.4 Analog Output

Scale: 4 – 20 mA follows rate.
Accuracy: 0.02% of Full Scale @ 20ºC.
Temperature drift: 40 ppm/°C
Update Time: 2.0 seconds.
Connection: Two wire.
Protection: Reverse polarity protected

2.5 Pulse Output

Type: 0-5V TTL, 0-Supply Voltage, Open collector

(30 VDC, 100 mA)
Divider: 1, 10, 100, or OFF
Rate & Duration: See below.

Frequency (Hz): 1 2 4 8
On/Off (msec) 500 250 125 62.5

2.6 Alarm 1 and Alarm 2

Type: 0-5V TTL, 0-Supply Voltage, Open collector

(30 VDC, 100 mA)
Function: Rate or Total

2.7 Physical

Temperature: Operating: -40°F (-40C) to 158°F (70C).
Humidity: 0 – 90% Non-condensing.
Packaging: NEMA 4X, Panel mount or Explosion proof
Dimensions for
NEMA 4X enclosure:

4.33" (110 mm) wide x 4.33" (110 mm)

long 4.33" (110 mm) tall.

Specifications and Product Features 10

HRT1 HP-313

Product Features

 HART Field Communications Protocol, Revision 7.0
 LCD display
 8-Digit Total display with configurable decimal point

location

 5-Digit Rate display with configurable decimal point

location

 8-Digit, Non-resettable Grand Total display
 4-button membrane keypad
 Pulse Input supports turbine as well as many other pulse

generating flowmeters

 Up to 20-Point Linearization to correct for flowmeter

non-linearities

 4-20 mA analog output proportional to flow rate
 Optional Scaled Pulse Output representing an increment

of volume for each pulse

 2 Optional Alarm Outputs configurable for Rate or Total
 Magnetically operated switch for Total reset

 Internal battery backup
 Configuration and Grand Total stored in non-volatile

memory. Grand Total saved once per minute.

Installation 11

HRT1 HP-313

3. INSTALLATION

Field Wiring Connections

Connections are made to the HRT1 on two six-position terminal
blocks, labeled as terminals 1-12 (Fig. 3.1). Connections are made to
the terminal blocks using wire gauges 16-28 AWG, tightening Torque

0.22 to 0.25Nm. A ten-position DIP switch (SW2) located on the back
of PCA186A provides a quick selection of various input/output
options. The following pages illustrate connections and switch settings
for various options.

To make field wiring connections to the HRT1-4 option (NEMA 4X,
front panel mounted on the outside of the clear cover), complete the
following:

1. Loosen the four cover screws.

2. Remove the clear cover and HRT1 assembly.

3. Use a small flat blade screwdriver and turn counter-clockwise

to loosen the proper terminal screw.

4. Insert wire and turn terminal screw clockwise to tighten.

5. Lightly pull on wire to ensure proper connection.

For the HRT1-2 option (NEMA 4X, front panel mounted behind the
clear cover):

1. Loosen the four cover screws and remove the clear cover.

2. Remove the four #4-40 x 5/16” black oxide screws from the

corners of the panel and remove the HRT1 assembly.

3. Use a small flat blade screwdriver and turn counter-clockwise

to loosen the proper terminal screw.

4. Insert wire and turn terminal screw clockwise to tighten.

5. Lightly pull on wire to ensure proper connection.

For the HRT1-3 or HRT1-3A option (Explosion proof enclosure):

1. Unscrew the cover of the enclosure counter-clockwise until it

separates from the body of the enclosure.

2. Remove the two #4-40 x 1” black oxide screws from the top

left and bottom right section of the front panel.

3. Remove the HRT1 assembly from the mounting standoffs.

4. Use a small flat blade screwdriver and turn counter-clockwise

to loosen the proper terminal screw.

5. Insert wire and turn terminal screw clockwise to tighten.

6. Lightly pull on wire to ensure proper connection.

Warning: When contained in an Explosion-Proof
enclosure, do not open the cover while circuits are live in
hazardous atmospheres.

Installation 12

HP-313 HRT1

NOTE:
When installing HRT1 unit directly on the turbine meter, follow the

steps below to avoid twisting signal wires from pickup coil.

1. Remove the HRT1 electronics from the enclosure.

2. Disconnect the signal wires from the HRT1 electronics, if
connected.

3. Mount/Thread the enclosure on the turbine flowmeter.

4. Reconnect the signal cable to the HRT1 unit.

Installation 13

HRT1 HP-313

3.1 4-20 mA Current Loop

The HRT1 is powered from a two-wire 4-20 mA current loop, in the
voltage range of 8-30 Volts DC, depending on the loop resistance. One
C-Size 3.6V Lithium or battery pack for Ex d system, is included as a
backup power supply to ensure that volume accumulation will not be
interrupted during a power failure. Switch 2 of SW-2 must be ON for
loop power.

Figure 3.1.1 – 4-20mA Loop Wiring and Switch Settings

Figure 3.1.2 – Loop Load Limitations

Operating

Region

1

6

3

JP2

1

8

TB2

TB1

4

SW2

9

7

10

11

12

5

2

-+

POWER SUPPLY
8-30 VDC

Supply Voltage VS Load

0

200

400

600

800

1000

1200

0 5 10 15 20 25 30

Supply Voltage

Load (Ohms)

Installation 14

HP-313 HRT1

1

The HRT1 outputs a 4-20mA analog signal on the current loop that is
proportional to the calculated flow rate. The 4mA and 20mA settings
referred to as outLo and outHi respectively, may be configured from
the front panel of the instrument or via HART communications.

3.2 Flowmeter Input

The flowmeter input accepts a low-level sinusoidal signal from a
magnetic type pickup coil, contact closure, or an isolated DC pulse
signal. Switches 7, 8, 9 and 10 on SW-2 must be set according to the
type of flowmeter input to be used. Proper switch settings will be made
at the factory if the flowmeter input is specified at the time of order.

SW-2 SWITCH SETTINGS FOR FLOWMETER INPUT OPTIONS:

INPUT OPTION SW-2 SETTINGS

Mag pickup / Contact Closure 7, 8 AND 9 ON (10 OFF)

Isolated Redi-Pulse - TTL 10 ON (7, 8 AND 9 OFF)

Isolated Redi-Pulse – Open-Collector 10 ON (7, 8 AND 9 OFF)

Magnetic Pickup Coil/Contact Closure

JP2

B

7

2

TB2

10

SIG IN -

11

1

4

SW2

SIG IN +

9

TB1

12

3

8

6

A

Magnetic Pickup

5

Figure 3.2.1 – Magnetic Pickup/Contact Closure Wiring and Switch Settings

SW2

1 2 3 4 5 6 7 8 9 10

NOTE:
HART Communications requires a loop resistance between 250
and 1100 Ohms.

Installation 15

HRT1 HP-313

SW2

SW2

Isolated Redi-Pulse (TTL Pulse)
Requires 3-Wire Installation

P

OWER SUPPLY

8

-

3

0 VDC

63S

IG IN

-

JP2

1

8

TB2

TB14

9

S

W2

10

11

7

12

52S

IG IN +

B
A

Redi-Pulse Pickup

C

+

-

Figure 3.2.2 – Isolated Redi-Pulse TTL Wiring and Switch Settings

Isolated Redi-Pulse (Open Collector)

Requires 3-Wire Installation

POWER SUPPLY
8-30 VDC

JP2

6

3

1

8

TB2

TB1

4

SW2

9

7

10

11

12

5

2

Redi-Pulse Pickup

B
A

C

+

-

Figure 3.2.3 – Isolated Redi-Pulse Open-Collector Wiring and Switch Settings

1 2 3 4 5 6 7 8 9 10

1

1

1 2 3 4 5 6 7 8 9 10

Installation 16

HP-313 HRT1

3.3 Pulse Output

HRT1 Pulse Output can be configured for turbine raw frequency or for
unit of measure scaled for the least significant digit of the displayed
total. A scaling factor of 1, 10 or 100 is available to reduce or increase
the resolution of the pulse output. For example, if the Total Decimal
Point is set to 0000000.0, and the Pulse Scale is 1, then 1 pulse will be
output for each tenth (0.1) of a unit of measure. Changing the Pulse
Scale to 10, would result in an output pulse for each 1.0 unit of
measure. The output must be scaled so that the pulse frequency does
not exceed the Pulse Frequency setting (8 Hz. Max) at the maximum
flow rate.

The Pulse Output may be configured as an Open Collector, 0-5V (TTL)
or Internal pullup to VDC+ using dip switch SW-2.

SW-2 SETTINGS AND PROTECTION DIODE VALUE FOR PULSE
OUTPUT OPTIONS:

OPTION SW-2

SETTINGS

TS1

OPEN COLLECTOR 6 OFF 36V TRANSORB

TTL 6 ON 5.1V ZENER

PULLUP TO VDC+ 6 ON 36V TRANSORB

63JP218T

B2

PULSE OUTPUT +

TB1

49SW2117

10122

5

SW2-

610K

DC_IN(+)

1

1 PULSE OUTPUT +

1

2

Figure 3.3.1 – Pulse Output Wiring and Circuit Overview

3.4 Alarm Outputs

HRT1 provides an optional Alarm Output feature, which includes 2
alarm outputs configurable for Rate or Total. The outputs may be
configured as an Open Collector, 0-5V (TTL) or Internal pullup to
VDC+.

Installation 17

HRT1 HP-313

SW-2 SETTINGS AND PROTECTION DIODE VALUES FOR ALARM
OUTPUT OPTIONS:

OPTION ALARM1

SW-2
SETTINGS

ALARM1

TS5

ALARM2
SW-2
SETTINGS

ALARM2

TS2

OPEN

COLLECTOR

4 OFF 36V

TRANSORB

5 OFF 36V

TRANSORB

TTL 4ON 5.1V ZENER 5 ON 5.1V ZENER

PULLUP TO

VDC+

4 ON 36V

TRANSORB

5 ON 36V

TRANSORB

Figure 3.4.1 – Alarm Outputs Circuit Overview

JP2

6

3

1

ALARM2 OUTPUT +

8

TB2

ALARM1 OUTPUT +

TB1

4

9

SW2

10

11

7

12

5

2

Figure 3.4.2 – Alarm Outputs Wiring

SW2-4

10K

DC_IN(+)

A

LARM 1

7

9

10A

LARM 2

8

SW2-5

10K

DC_IN(+)

Installation 18

HP-313 HRT1

3.5 Wiring Summary

When installing HRT1, it is a good practice to use shielded cables for
all input and output signals. The shield should be connected to the
chassis ground lug on the HRT1. The shield on the opposite end of the
cable should be left open.

This wiring practice is mandatory in order to comply with the
requirements for Electromagnetic Compatibility, as per EMC-Directive
89/336/EEC of the Council of European Community.

Configuration 19

HRT1 HP-313

4. CONFIGURATION

The HRT1 is fully configurable, with all parameters being stored in
non-volatile memory. The instrument may be configured locally using
the front panel keys or remotely via a HART communicator.

4.1 Local Configuration

Each consecutive press moves to the next menu item. The functions for
each button in the configuration mode are described below.

The following table outlines all menu items in the configuration mode:

Display Option Menu item Description

CLEArtot

no

Yes

No

Clear Total

Clears accumulated total and sets
TOTAL display to zero.

10000000

tA9

Tag Number

User defined 8-digit serial number.

AuErAgE

FAC NN

Linear

Average

Linearization Method

Sets the flow calculation method to
average K-factor or K-factor table.

00000.000

FAC d

00000000

0000000.0

000000.00

00000.000

K-factor Decimal Point

Set K-factor decimal point location.

The local configuration mode is entered by pressing the

P

b

utton.

Press for next menu item.

Press to edit selection and
to accept selection.

Press to move cursor
one position to the right.

Press to increment digit or
change selection.

P

OK

Configuration 20

HP-313 HRT1

Display Option Menu item Description

1.000

A FAC

8-digit

number

Average K-factor

Enter average K-factor.

PointS

20

2

to

20

Number of Points

Sets the number of entries in the
linearization table.

4999.981

Fr 01

0

to

5000

Frequency 1-20

Enter a frequency in Hz for each
entry in the table. Decimal point is
fixed.

1.000

FAC01

8-digit

number

K-factor 1-20

Enter a k-factor in pulses/gal for
each entry in the table.

1.000

C FAC

0.001
to

99999.999

Correction Factor

User defined number between 0.001
and 99999.999 to multiply flow and
total. Default 1.0.

tot unit

100

100 = GAL

110 = FT3

140 = LIT

150 = M3

180 = BBL

Total Units

Select Total units.
If custom is selected all indicators

are off. (gal, lit, ft3, m3, bbl,
custom)

0000000.0

tot d

00000000

0000000.0

000000.00

00000.000

Total Decimal Point

Set Total decimal point location.

FLo u

NN in

SEC

Min
HrS

dAY

Rate Units

Select RATE units.

00000.000

FL d

00000000

0000000.0

000000.00

00000.000

Rate Decimal Point location

Set Rate decimal point location.

Configuration 21

HRT1 HP-313

Display Option Menu item Description

SAPLE

1

1

to

80

Max Sample Time

Set maximum time in tenths of a
second to sample the input
frequency. This setting determines
the amount of time the HRT1 will
wait for the next input pulse before
returning to 0. For example, 80 = 8
seconds. Default is 1. Changing
this setting is only recommended for
low flow applications below 1 Hz.

1.000

outLo

Out Low

Sets flow rate value for 4 mA
output.

99.999

outHi

Out High

Sets flow rate value for 20 mA
output.

PuLSE S

oFF

oFF

1

10

100

Pulse Scale

Sets scale for pulse out. 1, 10, 100
units of total for one pulse out.
Pulses are scaled according to the
least significant digit of the
displayed total. For example, if
Total Decimal places is set to

0000000.0, and Pulse Scale is 1,
then 1 pulse is output for each tenth
(0.1) of a unit. Changing the Pulse
Scale to 10 would output one (1)
pulse for every 1.0 unit of volume.

OFF- turns pulse out off.

PuLSE F

8

1
2
4
8

Pulse Frequency

Sets frequency of burst of pulse out.
(1, 2, 4, 8)

PASS

1234

0000

to

9999

Password

Sets 4-digit password. Default

0000.

unit LoC

no

Yes

No

Lock Unit

Locks the unit. Password entry is
required to unlock the unit or make
any configuration changes after the
unit is locked.

Configuration 22

HP-313 HRT1

Display Option Menu item Description

ALNN 1

oFF

oFF

rAtE

tot

Alarm1 Function

Select Rate or Total for alarm
output. OFF- turns alarm function
off.

100000.0

ALNN 1

Alarm1 Value

Sets value to activate the alarm
output. Default 99999.999

ALNN 2

OFF

oFF

rAtE

tot

Alarm2 Function

Select Rate or Total for alarm
output. OFF- turns alarm function
off.

100000.0

ALNN 2

Alarm2 Value

Sets value to activate the alarm
output. Default 99999.999

0.0

Set t

Set Total

Sets Total to user defined value.
Grand Total is not affected.

Cur out

rAtE

rAtE

4
12
20

Current Out

Sets analog output to follow rate or a
predefined level for loop
diagnostics.

PuL test

no

Yes

No

Pulse Output Test

Outputs a test frequency of 1Hz,
50% duty cycle.

AL 1 test

no

Yes

No

Alarm1 Output Test

Activates alarm1 output.

AL 2 test

no

Yes

No

Alarm2 Output Test

Activates alarm2 output.

4.2 Default Configuration

HRT1 is fully configured by the factory prior to shipment. When the
instrument is purchased with a Hoffer Flowmeter or when calibration
and configuration data are supplied, the instrument is configured as
specified. When calibration or configuration data is not available, the
instrument is shipped with default values. Refer to Appendix A for a
listing of the HRT1 factory default configuration.

Operation and Maintenance 23

HRT1 HP-313

5. OPERATION AND MAINTENANCE

5.1 Display Parameters

The HRT1 calculates and displays total volume and flow rate on a
two-line liquid crystal display (LCD). The top line is an 8-digit Total
Volume display and the bottom is a 5-digit Rate display. The 8-digit
non-resettable Grand Total is also viewed on the top line by

pressing

The Grand Total will be displayed for approximately 15 seconds before
returning to the Total Volume display.

Volume units and the time base for flow rate are indicated by icons on
the right hand side of the LCD. When no icon for time units is
displayed, the time base is /SEC.

A Bar graph located at the bottom of the LCD provides a graphical
representation of the flow rate based on a percentage of the maximum
flow setting.

The flow rate and flow total are calculated and updated on the display
once every 2 seconds.

5.2 Saving Grand Total

To minimize the number of write cycles to non-volatile memory, the
Grand Total is saved once per minute. In the event that both loop
power and battery power are removed simultaneously, the Total will be
lost and the Grand Total could be up to one minute old when restoring
power. When changing the battery (see Section 7 Maintenance), it is
recommended to stop the flow at least two minutes prior to removing
power from the unit to ensure that the stored Grand Total is current
when restoring power.

5.3 Clearing the Total

The Volume Total may be cleared by using a magnet, a contact closure
to power common on the RESET input terminal, from the front panel
keypad or via HART communications (See Chapter 6 HART
Communications).

Operation and Maintenance 24

HP-313 HRT1

To clear the total using a magnet, slide the magnet slowly across the
HRT1 model name at the top of the front panel overlay.

To reset the total from the front panel keypad, use the following key
sequence:

Press P CLEArtot is displayed
Press OK To enter edit mode.

Press ▲

To select yes

Press OK To clear total
Press ▲

To return to operating mode

5.4 System Response Time

The displayed Rate and Total are updated every two seconds. The
analog output response time to reach steady state due to a change in the
input is also approximately two seconds.

The time for the display to reach 0 and for the analog output to return to
4 mA when flow stops will be between 3 and 12 seconds, depending on
the Max Sample Time setting (MST). Changing the MST is only
recommended for low flow applications where the input frequency is
below 1 Hz. See Chapter 4 Configuration for more information on
Max Sample Time.

5.5 Error Conditions

The HRT1’s self-checking capability is used to detect and report
malfunctions by displaying error messages on the LCD. When an error
occurs, the display will flash an error message until the error condition
is eliminated, or the user presses the OK button to acknowledge the
condition. Once the error condition has been acknowledged by
pressing OK, the error message will stop flashing. The message will be
displayed again after 60 seconds if the condition that caused the error
has not been resolved. The message will automatically stop flashing
and any associated alarms reset once the error condition is no longer
present.

Operation and Maintenance 25

HRT1 HP-313

The following table outlines the detected conditions and recommended
corrective action:

ERROR

MESSAGE

CAUSE

CORRECTIVE

ACTION

EPuLSE

Pulse output exceeds Pulse
Frequency setting. Output
pulses will stop during this
condition.

- Change pulse scale.

- Increase Pulse
Frequency setting(Max
8 Hz).

- Reduce the number
of places after the Total
decimal point.

EErES

EEPROM reset to factory
defaults.

Consult factory

ErAtE

Flow rate exceeds the flow rate
display capability. Displayed
flow rate will consist of all 9s.

Reduce flow rate or
reduce the number of
places after the flow
rate decimal point

EFLo

Flow rate exceeds the 20 mA
max flow setting. Analog
output will saturate at 24 mA.

Reduce flow rate or
increase the 20 mA
max flow setting.

LO BAT

Low battery. Replace battery

5.6 Battery Replacement Indication

The instrument has circuitry designed to monitor the battery voltage
and illuminate a

LO BAT message on the LCD when the battery is

approaching the end of its life.
When changing the battery, it is recommended to stop the flow at least

two minutes prior to removing power from the unit to ensure that the
stored Grand Total is current when restoring power (see section 5.2
Saving Grand Total).

See Section 7 Maintenance for detailed instructions on battery
replacement.

Operation and Maintenance 26

HP-313 HRT1

This Page Intentionally Left Blank

HART Communications 27

HRT1 HP-313

6. HART COMMUNICATIONS

The HRT1 has been designed to comply with Revision 7.0 of the HART
protocol. A full list of features new to Revision 7.0 may be obtained at
the Hart Communication Foundation website.

A HART Communicator or HART Master may be used to configure,
monitor process variables and obtain diagnostic information from the
HRT1. The instrument must be equipped with the HART Modem
Board (PCA187), which plugs into a 10-pin connector on the backside
of the HRT1 Main Board (PCA186).

Refer to Chapter 3 Installation for information on connections to
HART devices.

HART functions are defined as part of an enhanced device description
language (EDDL). Contact the factory if the HRT1 device is not
available in the list of DD libraries.

6.1 Dynamic Variables

The following Dynamic Variables have been implemented:

Meaning Units

Primary Variable Flow Rate Volume - Gal, Lit, Ft3, M3,

Bbl, Custom
Time

- /Day, /Hour, /Min, /Sec
Secondary Variable Flow Total Follows PV Volume units
Tertiary Variable Grand Total Follows PV Volume units
Quaternary Variable Frequency Hz

The HRT1 may be identified by the following:

Manufacturer ID Code: 224 (E0 Hex)
Device Type Code: 161 (A1 Hex)

HART Communications 28

HP-313 HRT1

6.2 Universal Commands

The following Universal Commands have been implemented:
0 Read Unique Identifier
1 Read Primary Variable
2 Read Primary Variable Current and Percent Range
3 Read Dynamic Variables and Primary Variable Current
6 Write Polling Address
7 Read Loop Configuration
8 Read Dynamic Variable Classifications
9 Read Device Variables with Status
11 Read Unique Identifier with Tag
12 Read Message
13 Read Tag Descriptor Date
14 Read Primary Variable Sensor Info
15 Read Primary Variable Output Info
16 Read Final Assembly Number
17 Write Message
18 Write Tag Descriptor Date
19 Write Final Assembly Number
20 Read Long Tag
21 Read Unique identifier with Long Tag
22 Write Long Tag

6.3 Common-Practice Commands

The following Common-Practice Commands have been implemented:

35 Write Range Values

38 Reset "Configuration Changed" Flag
40 Enter/Exit Fixed Current Mode
42 Perform Master Reset
45 Trim DAC Zero
46 Trim DAC Gain
48 Read Additional Device Status

HART Communications 29

HRT1 HP-313

6.4 Device-Specific Commands

The following Device-Specific Commands have been implemented:

#

COMMAND DESCRIPTION

128

Read Decimal Point
Location

Read the decimal point location
for Rate and Total.

129

Write Rate Decimal Point
Location

Select displayed flow rate
resolution as 00000, 0000.0,

000.00 or 00.000.

130

Write Total Decimal Point
Location

Select displayed total resolution
as 00000000, 0000000.0,

000000.00 or 00000.000.

131

Clear Total Reset the Total to zero.

132

Set Total Set the Total to a user defined

value.

133

Read Linearization
Variables

Read the flowmeter linearization
parameters

.

134

Write Linearization Set flowmeter linearization

method as Average K-Factor or
Linearization Table.

135

Write K-Factor Decimal
Point

Select k-factor resolution as
00000000, 0000000.0,

000000.00 or 00000.000.

136

Write Average-K Factor Write the value of the Average

K-Factor. Valid entries are
between 0.001 and 99999999.

137

Write Number of Points Write the number of points in

the Linearization Table. 20 is
the max number of points.

138

Write Correction Factor Write the value of the Correction

Factor. The correction factor is
a multiplier used to correct flow
rate and total.

139 Read Linearization Table Read the flowmeter

Linearization Table.

140 Write Linearization

Frequency

Write the Frequency values for
the linearization table points.

HART Communications 30

HP-313 HRT1

#

COMMAND DESCRIPTION

141 Write Linearization

K-Factor

Write the K-Factor values for the
linearization table points.

142 Read Pulse Information Read Pulse Scale and Pulse

Frequency information.

143 Write Pulse Scale Set the Pulse Scale to 1, 10, 100

or OFF.

144 Write Pulse Frequency Set the frequency in Hz. of the

pulse output burst to 1, 2, 4 or 8.
145 Pulse Output Control Stop 1 Hz Pulse Output Test.
146 Pulse Output Test Start 1Hz Pulse Output Test.
147 Read Alarm Info Read Function and Level for

Alarm 1 and 2.
148 Write Alarm Function Define the function of the Alarm

Output as Rate or Total.
149 Write Alarm Level Write the value at which an

alarm condition is indicated.
150 Alarm Release Release the Alarm Output test.
151 Alarm Test Activate Alarm Output.
152 Read Tag Read Tag Number.
153 Write Tag Write Tag Number. 0 to

99999999.
154 Read Sample Time Read Sample Time.
155 Write Sample Time Write Sample Time. Valid

entries 1-80.

156 Write Password Write 4-digit password. 9999 is

max value.

157 Read Lock Status Read Lock Status. Password is

required when unit is locked.

158 Write Lock Unit Lock the unit and enable

password protection.

159 Read Current Mode Read mode for analog output

current (4mA, 12mA, 20mA,
Follows Rate).

HART Communications 31

HRT1 HP-313

#

COMMAND DESCRIPTION

160 Write Current Mode Write mode for analog output

current (4mA, 12mA, 20mA,
Follows Rate).

161 Read Units Read units for volume total and

rate.

162 Write Flow Rate Time Write units for flow rate time

base (/Sec, /Min, /Hr, /Day).

163 Write Total Units Write units for volume total

(GAL, FT3, L, M3, BBL).

6.5 Device Status

The following Status Bits are implemented:

Bit 0 - Primary Variable Out Of Limits
Bit 1 - Non-Primary Variable Out Of Limits
Bit 2 - Primary Variable Analog Output Saturated
Bit 3 - Primary Variable Analog Output Fixed
Bit 4 - More Status Available
Bit 5 – Cold Start
Bit 6 – Configuration Changed
Bit 7 – Device Malfunction

HART Communications 32

HP-313 HRT1

6.6 Additional Device Status

The following Additional Device Status Bits are implemented:

Byte Bit Meaning

0 Unused
1 Unused
2 Pulse Output Overflow
3 Flow Over range
4 Flow Rate Display Too High
5 DAC Zero Not Calibrated
6 DAC Gain Not Calibrated

0

7 Bit Current Override
0 Total Units Error
1 Rate Time Units Error
2 Linearization Function Error
3 K-Factor Decimal Point Error
4 Number of Points Error
5 Total Decimal Point Error
6 Rate Decimal Point Error

1

7 Sample Time Error
0 Unused
1 Unused
2 Unused
3 Pulse Scale Error
4 Pulse Frequency Error
5 Unit Locked
6 Alarm 2 Function Error

2

7 Alarm 1 Function Error

HART Communications 33

HRT1 HP-313

Byte Bit Meaning

0 Unused
1 Unused
2 Unused
3 Unused
4 Unused
5 Pulse Output Test
6 Alarm 2 Test

3

7 Alarm 1 Test
0 Unused
1 Unused
2 Unused
3 Unused
4 Unused
5 Unused
6 Alarm 2 Activated

4

7 Alarm 1 Activated
0 Unused
1 Unused
2 Unused
3 Unused
4 Unused
5 Unused
6 Unused

5

7 Unused
0 Maintenance Required
1 Device Variable Alert
2 Critical Power Failure
3 Unused
4 Unused
5 Unused
6 Unused

6

7 Unused

HART Communications 34

HP-313 HRT1

Byte Bit Meaning

0 Unused
1 Unused
2 Unused
3 Unused
4 Unused
5 Unused
6 Unused

7

7 Unused
0 Simulation Active
1 Non-Volatile Memory Defect
2 Volatile Memory Defect
3 Watchdog Reset Executed
4 Voltage Conditions Out of Range
5 Environment Conditions Out of
6 Electronic Defect

8

7 Unused

HART Communications 35

HRT1 HP-313

6.7 EDDL – Process Variables

Primary Variables

 Flow Rate – Display of currently measured volumetric flow

with units selected.

 Flow Rate Loop Current – Display of current value of

analog output (4-20 mA) based on flow rate.

 Flow Rate % rnge – Display of current % of flow rate range.
 Flow Rate LRV – Display of Lower Range Value for 4 mA

flow setting.

 Flow Rate URV – Display of Upper Range Value for 20 mA

flow setting.

 Total – Display of currently measured volumetric flow total

with units selected.

 Grand Total - Display of currently measured grand total with

units selected.

 Frequency – Display of currently measured flowmeter input

frequency in Hz

Identification

 Tag – Assign HART Tag to device
 Long Tag – Assign long HART Tag to device
 Manufacturer – Display HOFFER FLOW CNTRLS
 Model – Display HRT1
 Dev id – Display ID number associated with device.

 PV Snsr s/n – Display of serial number for Primary

Variable sensor.

HART Communications 36

HP-313 HRT1

6.8 EDDL – Device Diagnostics

Warning

 Alarm 1 Being Tested – Indicates Alarm Output 1 is in test

mode.

 Alarm 2 Being Tested – Indicates Alarm Output 2 is in test

mode.

 Pulse Output Being Tested – Indicates Pulse Output is in test

mode.

 Alarm 1 Activated – Indicates an alarm has occurred in

response to a condition assigned to Alarm 1 output.

 Alarm 2 Activated – Indicates an alarm has occurred in

response to a condition assigned to Alarm 2 output.

 Flow Rate Exceeds Display - Flow rate exceeds the flow rate

display capability. Displayed as

ErAtE on the HRT1 LCD

display. See section 5.5 Error Conditions for more
information.

 Flow Exceeds 20 mA Calibration - Flow rate exceeds the 20

mA flow rate upper range value (URV). Analog output will
saturate at 24 mA. Displayed as

EFLo on the HRT1 LCD

display. See section 5.5 Error Conditions for more
information.

 Pulse Rate Overflow - Pulse output exceeds Pulse Frequency

setting. Output pulses will stop during this condition.
Displayed as

EPuLSE on the HRT1 LCD display. See

section 5.5 Error Conditions for more information.

6.9 EDDL – Online

Device Setup

 HRT1 Tag – Assign HRT1 serial number
 Max Sample Time – Assign the maximum time in tenths of a

second to sample the input frequency. This setting determines
the amount of time the HRT1 will wait for the next input pulse
before returning to 0. Valid entry is 1-80, with 80 = 8
seconds. Default is 1. Changing this setting is only
recommended for low flow applications below 1 Hz. See
section 4.1 Local Configuration for more information.

HART Communications 37

HRT1 HP-313

 Change Lock Status – Enable password protection by

selecting YES, disable by selecting NO.

 Password – Assign a 4-digit password.

Flow Setup

 Rate Units – Select SECONDS, MINUTES, HOURS or

DAYS for flow rate units.

 Lower Flow Rate for 4 mA output (LRV) – Assign flow rate

for 4 mA output.

 Upper Flow Rate for 20 mA output (URV) – Assign flow

rate for 20 mA output.

 Rate Decimal Point – Select displayed flow rate resolution as

00000, 0000.0, 000.00 or 00.000.

Total Setup

 Clear Total – Select YES to clear Total (Grand Total is non-

resettable)

 Set Total – Write a specific value to Total.
 Units – Select L, M3, GAL, BBL, FT3 OR

“BLANK”(custom) for Total units.

 Total Decimal Point – Select displayed total resolution as

00000000, 0000000.0, 000000.00 or 00000.000.

Outputs Setup

Pulse Output

 Pulse Scale – Select OFF, 1, 10 or 100. Pulses are scaled

according to the least significant digit of the displayed total.
For example, if Total Decimal places is set to 0000000.0, and
Pulse Scale is 1, then 1 pulse is output for each tenth (0.1) of a
unit. Changing the Pulse Scale to 10 would output one (1)
pulse for every 1.0 unit of volume. OFF turns Pulse Output
off.

HART Communications 38

HP-313 HRT1

 Pulse Frequency – Select 1, 2, 4 or 8 to select the frequency

in Hz. of the pulse output burst.

 Pulse Test – Outputs a test frequency of 1 Hz / 50% duty

cycle on the pulse output terminals.

Analog Setup

 Current Mode – Select FOLLOWS RATE or SET TO 4 mA,

12 mA, or 20 mA.

 D/A trim – Calibrate the analog output 4 mA and 20 mA

reading with a reference meter connected.

 Loop Test – Set analog output to fixed mode by selecting 4

mA, 20 mA or OTHER.

Alarm 1

 Alarm 1 Function – Select TOTAL, RATE or OFF.
 Alarm 1 Out – Numeric entry to assign an alarm threshold.
 Set Alarm 1 ON – Toggle Alarm 1 Output to test.

Alarm 2

 Alarm 2 Function – Select TOTAL, RATE or OFF.
 Alarm 2 Out – Numeric entry to assign an alarm threshold.
 Set Alarm 2 ON – Toggle Alarm 2 Output to test.

Meter Setup

 Linearization – Select AVERAGE K-FACTOR to use a

single K-Factor or LINEARIZATION TABLE to enter up to
20 points.

 K-Factor Decimal Point Location - Select k-factor resolution

as 00000000, 0000000.0, 000000.00 or 00000.000

HART Communications 39

HRT1 HP-313

 Number of Points in Table – Select the number of points (1-

20) in the table when LINEARIZATION TABLE is selected.

 Frequency/K-Factor – Enter Frequency and K-Factors for

each point in table.

 Average K-Factor – Enter Average K-Factor when

AVERAGE K-FACTOR is selected for Linearization.

 Correction Factor – User defined flow total multiplier

between 0.001 and 99999.999.

HART Setup

 Poll Addr – (Polling address) Assign a number between 0-15

to be used in multidrop applications.

 Date – Enter the Date
 Descriptor – Enter a descriptor
 Message – Enter a message
 Final asmbly num – Enter Assembly number.

HART Communications 40

HP-313 HRT1

This Page Intentionally Left Blank

Appendix A – Default Configuration 41

HRT1 HP-313

7. MAINTENANCE

The only maintenance for the HRT1 is a possible battery replacement
after several years in service.

All configuration settings are stored in nonvolatile memory; therefore,
configuration settings will not be lost in the event of battery failure.

Lithium Battery Pack Replacement

WARNING: To prevent ignition of hazardous atmospheres, do

not remove the cover unless the area is void of combustible gas
and vapors. Replace the batteries only with battery part
number 100-2732 for Ex systems.

WARNING: The lithium battery that powers the HRT1 is a

sealed unit; however, should Lithium batteries develop a leak,
toxic fumes could escape upon opening the enclosure. Ensure
that the instrument is in a well-ventilated area before opening
the enclosure to avoid breathing fumes trapped inside the
enclosure. Exercise caution in handling and disposing of spent
or damaged batteries.

Important: Before replacing the lithium battery stop the flow
for at least two minutes prior to removing power from the unit
to ensure that the stored Grand Total is current when
restoring power. See Section 5.2 Saving Grand Total.

The lithium battery is secured inside the enclosure by a Velcro straps
and connected to a connector (JP2) near the top of the circuit assembly.

To replace a lithium battery pack in the HRT1, perform the following
steps:

Ex Proof Enclosure:

1. Loosen the cover set screw and unscrew the cover of the enclosure

counter-clockwise until it separates from the main body of the
enclosure.

2. Using a small standard blade screwdriver, remove the two #4-40
screws located to the lower right and upper left side of the LCD
display.

Appendix A – Default Configuration 42

HP-313 HRT1

3. Lift the display/keypad assembly from the enclosure, making sure

the circuit assembly does not contact the enclosure.

4. Loosen the Velcro straps, disconnect the battery from the JP2

connector on the circuit assembly, and remove the battery from
the enclosure.

5. Install the new battery in the enclosure in the same position as the
original battery, and secure the Velcro straps tightly around the
battery.

6. Connect the replacement battery to the JP2 connector.

7. Place the circuit assembly over the standoffs and fasten with the

two #4-40 screws, ensuring that all connector wiring is inside the

enclosure.

8. Replace the enclosure cover, threading it onto the enclosure in a
clockwise direction.

NEMA Enclosure:

1. Loosen, by turning counter-clockwise, the screws in each corner of

the enclosure cover to remove.

2. Remove four #4-40 screws from the front panel by turning

counter-clockwise.

3. Lift the display assembly from the enclosure.

4. Loosen the Velcro strap, disconnect the battery from the JP2

connector on the circuit assembly, and remove the battery from the
enclosure.

5. Install the new battery in the enclosure in the same position as the

original battery, and secure the Velcro tightly around the battery.

6. Connect the replacement battery to the JP2 connector.

7. Replace the display assembly and enclosure cover.

Battery shelf life is estimated at 10 years at a storage temperature of 25° C.

Appendix A – Default Configuration 43

HRT1 HP-313

APPENDIX A – Default Configuration

Factory default configuration:

FIELD Value

TAG 10000000

LINEARIZATION

METHOD

Average

K-FACTOR DECIMAL

LOCATION

3

AVERAGE K-FACTOR 1.00

NUMBER OF POINTS 20

FREQUENCY 01 4999.981
FREQUENCY 02 4999.982
FREQUENCY 03 4999.983
FREQUENCY 04 4999.984
FREQUENCY 05 4999.985
FREQUENCY 06 4999.986
FREQUENCY 07 4999.987
FREQUENCY 08 4999.988
FREQUENCY 09 4999.989
FREQUENCY 10 4999.990
FREQUENCY 11 4999.991
FREQUENCY 12 4999.992
FREQUENCY 13 4999.993
FREQUENCY 14 4999.994
FREQUENCY 15 4999.995
FREQUENCY 16 4999.996
FREQUENCY 17 4999.997
FREQUENCY 18 4999.998
FREQUENCY 19 4999.999
FREQUENCY 20 5000.000

K-FACTOR 01 1.00
K-FACTOR 02 1.00
K-FACTOR 03 1.00
K-FACTOR 04 1.00
K-FACTOR 05 1.00
K-FACTOR 06 1.00
K-FACTOR 07 1.00
K-FACTOR 08 1.00
K-FACTOR 09 1.00
K-FACTOR 10 1.00
K-FACTOR 11 1.00
K-FACTOR 12 1.00

Appendix A – Default Configuration 44

HP-313 HRT1

K-FACTOR 13 1.00
K-FACTOR 14 1.00
K-FACTOR 15 1.00
K-FACTOR 16 1.00
K-FACTOR 17 1.00
K-FACTOR 18 1.00
K-FACTOR 19 1.00
K-FACTOR 20 1.00

CORRECTION FACTOR 1.000

TOTAL UNITS 100 (GAL)

RATE UNITS MINUTES

MAX SAMPLE TIME 01

OUT LOW (LRV–4MA) 00000.000

OUT HIGH (URV–20 MA) 99.999

PULSE SCALE 0 (OFF)

PULSE FREQENCY 8

ALARM 1 FUNCTION Off

ALARM 1 SETPOINT 99999.981

ALARM 2 FUNCTION Off

ALARM 2 SETPOINT 99999.981

CURRENT OUT FOLLOWS RATE

PULSE TEST No
ALARM 1 TEST No
ALARM 2 TEST No

Appendix B – Declaration of Conformity 45

HRT1 HP-313

APPENDIX B – Declaration of Conformity

Appendix B – Declaration of Conformity 46

HP-313 HRT1

Appendix C – Installation Drawings and Conditions 47

for Safe Use for Certified Systems

HRT1 HP-313

APPENDIX C

Installation Drawings and Conditions for Safe Use for

Certified Systems

48 Appendix C – Installation Drawings and Conditions
for Safe Use for Certified Systems

HP-313 HRT1

Appendix C – Installation Drawings and Conditions 49

for Safe Use for Certified Systems

HRT1 HP-313

50 Appendix C – Installation Drawings and Conditions
for Safe Use for Certified Systems

HP-313 HRT1

Appendix C – Installation Drawings and Conditions 51

for Safe Use for Certified Systems

HRT1 HP-313

52 Appendix C – Installation Drawings and Conditions
for Safe Use for Certified Systems

HP-313 HRT1

Appendix C – Installation Drawings and Conditions 53

for Safe Use for Certified Systems

HRT1 HP-313

54 Appendix C – Installation Drawings and Conditions
for Safe Use for Certified Systems

HP-313 HRT1

Appendix C – Installation Drawings and Conditions 55

for Safe Use for Certified Systems

HRT1 HP-313

56 Appendix C – Installation Drawings and Conditions
for Safe Use for Certified Systems

HP-313 HRT1

Appendix C – Installation Drawings and Conditions 57

for Safe Use for Certified Systems

HRT1 HP-313

58 Appendix C – Installation Drawings and Conditions
for Safe Use for Certified Systems

HP-313 HRT1

Appendix C – Installation Drawings and Conditions 59

for Safe Use for Certified Systems

HRT1 HP-313