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: [e-mail]

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)