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
MODELHRT1-( 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+H2T6; Gb; Ex tb IIIC T72°C Db; IP66;
Class I, Zone 1, AEx db IIB+H2T6; 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 mVP-P to 30 VP-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 kΩto +3.3 VDC
Reset:
Signal Type: Contact closure, Reset Terminal to DC
common
Min On: 25 msec
Internal Pull-up: 100 kΩto +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.