Heath Consultants HVC User Manual
Heath Consultants Inc.
Houston, TX
713-844-1300
Fax: 713-844-1309
1-800-HEATH-US
www.heathus.com
Heath Volume Corrector
HVC 325 Series
User’s Manual & Field Installation Guide
325 IS Series
HVC User’s Manual & Field Installation Guide
Proprietary Notice
The contents of this manual are proprietary to Heath Consultants Incorporated. Reproduction
of this manual, in whole or in part, is prohibited without the express written consent of Heath
Consultants Incorporated.
Heath Consultants Incorporated operates under a continual product improvement program and
reserves the right to make improvements and/or changes without prior notification.
Purpose of this Manual
The HVC 325 series is a powerful device that can be assembled and programmed in a variety of
configurations. The purpose of this manual is to provide information for use in instrument shop setup
and field installations.
Models
325 HVC IS HPN 77R91-1000
325 HVC HPN 77R91-1000-1
HPN 77R91-1071, rev A
©COPYRIGHT 2011, Heath Consultants Incorporated
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Table of Contents
325 IS Series ................................................................................................................................... 2
Heath Volume Corrector (HVC) Overview .................................................................................... 4
HVC Features ...............................................................................................................................4
Mounting & Installation ...................................................................................................................7
Equipment Required .....................................................................................................................7
Matching the HVC to the Meter Rotation ....................................................................................7
Meter Mounting ............................................................................................................................7
Pressure Connection .....................................................................................................................8
Temperature Probe Installation ....................................................................................................8
Electrical Installation ....................................................................................................................8
Battery Pack & Back-up Batteries................................................................................................8
External Power .............................................................................................................................9
Pulse Outputs ................................................................................................................................9
Form “C” PCB (Optional) ..........................................................................................................10
External Modem .........................................................................................................................10
Internal Modem ..........................................................................................................................10
Alarms ........................................................................................................................................10
HVC Host Operating Software ......................................................................................................11
Software Installation ..................................................................................................................11
Quick Start Guide Note: Click “F1” key for help on any item .....................................12
Configuration 1 Screen ...............................................................................................................13
Download and Printing Data ......................................................................................................16
Configuring for use with an IP Modem .....................................................................................17
Specifications .................................................................................................................................24
Troubleshooting .............................................................................................................................26
Annual Checks ...............................................................................................................................28
Back-up Battery Replacement Procedure ......................................................................................28
Spare Parts and Accessories...........................................................................................................31
Service Information .......................................................................................................................32
Configuration Worksheet ...............................................................................................................33
Technical Support ..........................................................................................................................36
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Heath Volume Corrector (HVC) Overview
The HVC 325 is a microprocessor based, self-contained system designed for the purpose of performing
ideal gas law calculations using integral pressure, temperature and volume sensing devices.
HVC Features
• Intrinsically safe: Class I Div I Group D (without internal modem)
• Single Alkaline “D” battery provides power for up to 4 years
• Single Lithium “AA” Backup battery will provide 100% operation for up to 1 year after main
battery is depleted
• Measures & records pressure and temperature sensors every meter revolution or every min
(programmable)
• Continuous LCD defaults to Corrected Volume. Scrolling allows Uncorrected Volume, Pressure,
Gas Temperature, Correction Factor, Main and Lithium Battery Voltage, as well as any active
Alarm to be displayed.
• Non-volatile Flash memory saves Calibration, Transducer Coefficients Configuration & Site info
if all power is lost
• Profiler data recording- Circular log: 130 days/hourly: Time/ Corrected/ Uncorrected/ Ave
Pressure/ Ave Gas Temperature
• Event Log (Records alarms & configuration changes)
• System Alarms (H/L Press, H/L Temp, main and lithium backup battery)
• Contract Usage Alarms (High Day/ Warning Month/ High Month)
• Contract Management (Nomination/ Allocation)
• All alarms can be reset via scroll button (No laptop needed)
• Call out upon alarm
• Remote Communications Ready (External Direct port & Internal Remote RS232’s)
• Multi-Drop to several instruments from one modem (Up to 62)
• Previous Month Total Volumes (Uncor & Corr) can be displayed on LCD
• Max Day Volume “total” & Date stamp of Max Day can be displayed on LCD (Max Day can be
reset via scroll button)
• Protocols included: Sandia (Native)/ Modbus RTU or ASCII
• Pulse Outputs (Uncorrected & Corrected)
• Units of measure (PSIA, KPA, BAR Deg. F/ Deg. C)
• Reliable Falling magnet/ Reed switch input
• Index uses all brass miter gears that are easily reversible for CW & CCW meter direction
• HVC Firmware can be upgraded via PC
• IP64, Aluminum, Powder coated paint over chromate surface prep, lockable stainless steel hasp
closure (Saltwater spray tested)
• HVC Host software will also operate the LVC and XVC devices
• HVC Host software is very user friendly
• HVC Host is compatible with Windows 7, Win Vista and Win XP
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Display
Uncorrected
mechanical index
Scroll Button
External Modem
Wiring Port
RS232
PC Com
Optional Temperature
Pressure port
Universal
mounting plate
Locking
Hasp
Earth
Ground
Stud
Drill spot faces
front of the meter
Optional Transducer #2
(not yet available)
Figure 1: LCD Display List: Corrected Volume (default after 4 minutes)/ Uncorrected Volume/
Correction Factor/ Gas Pressure/ Gas Temp/ Main Battery Voltage/ Backup Lithium Voltage/ Active
Alarms. Active Alarms will be indicated with decimal points along the bottom of the LCD and the full
Display List and actual Alarms can be viewed by scrolling.
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Primary
battery
Earth
Ground
Stud
Back up battery
(under cover)
Reversible gears for
adapting to CW or CCW
rotating meters
Figure 2: Inside configuration. Refer to drawing MTM-308-1 for field wiring requirements for external
power and modem connections to maintain intrinsic safety.
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Mounting & Installation
Equipment Required
• Lap Top Computer (Using Win XP, Win Vista or Win 7)
• Communications Cable
• Test Gauge, Dead Weight Tester or Accurate Pressure gauge
• Temperature Reference (If equipped with gas temperature probe)
• HVC Mounting Kit (gasket, wrench)
• Mechanics Tool Kit
Matching the HVC to the Meter Rotation
The HVC 325 is equipped with a “Falling magnet/ reed switch” Mechanical Index Assembly. The
HVC 325 is suitable for direct mounting on most diaphragm, rotary or mechanical turbine meters
including, among others, Rockwell, Equimeter, Roots, Dresser, Romet or American with instrument
drives.
When directly mounted to a meter, the user should ensure that the mechanical index rotation of the HVC
325 matches the rotation of the meter. Unless otherwise specified, the HVC 325 will be shipped suitable
for clockwise (CW) rotating meters. The proper rotation can be confirmed by spinning the drive dog
on the bottom of the instrument in the direction required by the meter. If the mechanical counter
odometer turns in the wrong direction, change rotation.
When configuring the HVC 325 using HVC Host, the “UnCor Vol Input” will be configured by default to
“Digital Input”. This will grey out the: “Clockwise” selection and will set the “Meter Speed” to “Fast”
regardless of actual meter rotation as the falling magnet/ reed switch mechanical index is in use. If the
optional Optical Index is used, the “UnCor Vol Input” will be configured to “Opto Input” which will
enable the direction and speed selections.
Meter Mounting
The standard HVC 325 will fit most any mechanical meter instrument drive. Use gasket (provided)
between the HVC 325 and meter base. Mount on to top of the meter while insuring that the HVC 325 drive
pin engages properly with the meter drive. Verify meter rotation. Secure the HVC 325 with bolts (not
supplied with mounting kit) to the meter base.
A “Large Mounting kit” (77R61-9580) can be supplied as an option. This kit consists of mounting
hardware, test plug, isolation valve, miscellaneous fittings and 1/8” tubing to allow connection of
pressure to the HVC.
NOTE: A rotatable base plate allows for user desired orientation of the instrument. The base plate is
removed using a 5/32 hex wrench to remove four bolts. The INSTRUMENT may then be re-installed
with a different orientation. The base plate MUST maintain its original position and be positioned
toward the front of the meter indicated by a drill spot on the top of the base plate. CAUTION: TO
PREVENT DAMAGE TO THE METER DO NOT CHANGE ORIENTATION OF THE BASE PLATE
ON THE METER. ONLY CHANGE ORIENTATION OF THE INSTRUMENT.
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Pressure Connection
Connect the pressure (or gas) supply to the 1/4” NPT female connector located on the back of the HVC
325 housing. After piping is complete, check all connections to ensure that no leaks are present. Note:
For ease and isolation of testing, the HVC large mounting kit is recommended. This kit will assist in
future calibrations and inspection while the unit is in service.
Temperature Probe Installation
If equipped, the standard temperature probe (6” x 1/4” OD) should be installed into the appropriately
sized thermowell filled with a thermo conductive medium such as glycol or alcohol. Insert the
temperature probe into the thermowell through the standard 1/4” inch NPT male fitting (provided) until
the tip of the probe reaches the bottom of the well. Secure excess armor cable length of the probe.
It may be necessary to isolate the pressure and temperature connections to the pipeline, so as not to
disturb the cathodic protection system.
Electrical installation
NOTE: Refer to drawing MTM-308-1 for field wiring requirements for external power and
modem connections to maintain intrinsic safety.
The HVC 325 unit must be earth grounded to maintain safe operation and warranty.
The ground stud of the HVC 325 (located on the bottom left of the instrument) must be connected to a
suitable known external earth ground (usually a dedicated ground rod and NOT AC ground). All of the
major components in the HVC 325 are bonded together and connected internally to this ground stud.
It is required that grounding be performed, especially when an external modem and/or external power
supply (which requires a dedicated ground rod in close proximity to the safe area) is used. All cabling
connecting to the HVC 325 must be shielded with all shields tied to case ground.
For multiple device interconnections (modems, power supplies etc.) the ground stud of the HVC 325
must be tied directly to this same (safe area) ground rod rather than having a separate ground rod of its
own. It may be necessary to isolate the portion of the pipe that the HVC 325 is mounted to (with
insulating flanges) so as not to disturb the cathodic protection system.
The American Gas Association recommends grounding all electronic field devices to a driven ground
rod. This will help protect the device from transients including lightning and power surges on the
pipeline.
To reduce the possibility of “secondary” lightning strike damage (damage caused by static electricity
fields in the immediate area), the above precautions are required. However, these precautions cannot
prevent damage to an instrument that receives a “direct” lightning strike.
Battery Pack and Back-up Batteries
The HVC 325 units utilize (1) 1.5-volt, encapsulated “D” cell alkaline battery as its primary power
source. The pack supplied with the HVC 325 consists of an alkaline dry cell and a protection circuit.
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HVC 325 units are shipped from the factory, powered up and ready to install (Unless otherwise
specified).
The HVC 325 incorporates an on board uninterruptible power supply. This consists of one factory
installed “AA” lithium cell (BT1) rated at 3.6 volts. This cell is easily replaced in the field.
The HVC incorporates an on board battery (CR2032) for backup of the profiler log. This consists of a
replaceable button style lithium battery (BT2) located on the component side of the PCB.
Normal battery voltage should be displayed between the ranges of 1.5 to 1.7 volts for a new battery, and
when the primary power drops below .8 volts, the unit will switch to lithium backup. Under normal
conditions, the main battery pack should last up to four years and the lithium backup battery should last
up to 1 year without power from the main battery.
Caution: The maximum voltage allowed on the “Main battery” input is 2 volts DC. Only use the 1.5
volt battery pack supplied by Heath. If this voltage is exceeded, a protection fuse may blow and the
warranty will be void.
Note: If all three batteries lose power, the data that is stored in non- volatile memory will not be lost.
This includes Calibration, Poly (transducer) and configuration data.
Caution: To maintain the Intrinsic Safe rating, use only proper replacement batteries: main battery pack
HPN 77R91-1037, Lithium backup battery, HPN 77R65-8001, and coin battery, HPN 77R65-8002.
Contact Heath Consultants for replacement batteries and main battery packs. Refer to Annual Checks on
page 28 for replacement procedure.
External Power
The HVC can be connected to an external power source (6- 15VDC). External Power is
recommended when using modems which are externally powered.
Pulse Outputs
Form “A” (Standard)
The HVC 325 is equipped to provide pulse outputs representative of uncorrected and corrected volume.
There are two pulse channels available and are designated “A” and “B”. The pulse outputs are two-wire
open drain. Pulser A is designated for uncorrected pulse out. Pulser B is designated for corrected pulse
out.
Specifications for Pulsers
Pulse output electrical specification is as follows: Open drain, requires external 1 to 30 volts
maximum, 25 mA maximum, and 1 K minimum load resistance. Each pulse has a standard fixed pulse
width of 62.5 milliseconds with a duty cycle of 50% (62.5 ms on and 62.5 ms off). An optional 1000
milliseconds (1 sec) pulse width is also available.
Because of the wide variety of applications requiring connection to the pulse output channels,
consideration should be given to the site electrical classification as to the use of intrinsic safety barriers.
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Form “C” PCB (Optional)
This is an optional feature that adds two Form “A” pulses for Corrected and two for Uncorrected.
External Modem
The HVC 325 is equipped with two RS232 communication ports. “Com Port 1” is dedicated to local
direct communication at 19200 baud using the HVC “comm cable”. “Com Port 2” is used for connecting
a modem. Remote baud rates available are 300, 1200, 2400, 9600 and 19200. When configuring for a
remote modem, the “Remote Modem Baud Rate” in the unit MUST match the baud rate of the field
modem being used.
NOTE: The “Remote Port” must have RX, TX, and GND connected (RTS is required for the
“call out upon alarm” feature).
NOTE: When connecting the HVC to an external modem, it is recommended to connect external power
to the HVC due to higher current demand. If not, the primary alkaline battery pack’s run-time will be
reduced.
Internal Modem
The HVC 325 may be equipped with an internal modem and phone line surge suppressor. The internal
modem is a 2400-baud modem. The modem is pre-configured and pre-wired from the factory, ready for
remote communication. If the HVC is equipped with the phone line suppressor, it will be connected
directly into the modem’s RJ-11 connector. A 12-volt battery pack (8 “AA” batteries) is supplied, but not
connected when shipped. The user must connect prior to remote communication. Assuming one twominute call per day, every day, the battery should provide approximately 2 years of service.
The optional phone line surge suppressor will sacrifice itself to protect the equipment in the event of a
destructive power surge on the phone line.
To connect a phone line to the modem, insert the phone cable through the black wire gland on back of the
case (see Figure 1). The cable must be terminated with a RJ-11 connector. Plug into surge protector if
provided; otherwise, plug directly to the modem.
CAUTION: The HVC must be connected to earth ground to allow the surge suppressor to operate
properly.
CAUTION: Internal modem option is not currently certified for use in hazardous environments. An
external modem should be used when necessary. Refer to drawing MTM-308-1 for field wiring
requirements on external power and modem connections to maintain intrinsic safety.
Alarms
All alarms can be reset manually by holding the scroll button closed for more than 4 seconds. They can
also be configured and reset by using the HVC Host. An active alarm will be indicated by a lower row of
dots on the LCD display.
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HVC HOST Operating Software
HVC Host is the companion software interface to the HVC instrument. The application program
provides for configuration, calibration, local and remote communication, interrogation, data collection
and data processing.
The Auto Download feature allows automatically polling any or all the instruments (on remote
communications- modems or TC/IP) from a “Master Directory” list. This “Auto Download” feature is
included in the HVC Host and is supplied on CD ROM media. The self expanding executable “setup”
file will guide the user through the installation process.
This install will work in Windows operating systems for Win XP, Win Vista and Win 7.
NOTE: This install must be on each workstation in a network. The data can be sent to a network drive
and be shared by other workstations that have HVC Host installed. Remember to change the “Data
Paths” of each workstation to use the same network drive and directory. DO NOT INSTALL THIS
SOFTWARE DIRECTLY ONTO THE NETWORK SERVER DRIVE.
Software Installation
To install, locate the file “HVCHostSetup.exe”. Double-click the file to install. Follow the instructions
to complete the installation process. After the software is installed, you may need to configure the com
port to directly connect to the instrument. Com 1 is very common for direct communications; however,
many newer computers are not equipped with a 9-pin connector for direct connect with the standard
com cable. A “USB to Serial adapter” may be required. Follow the instructions included with the USB
to serial adapter. After the adapter is installed and connected to the PC, go to “Start”/ Control Panel/
System/ Hardware/ Device Manager/ “Ports” (click the “+” to the left of “ports”) Look for “USB to
Serial Bridge (com xx)” Enter this port number in the HVC Host (Host Setup/ Configure Host)/
“Direct”. Any port from 1-255 can be chosen. Note: Only the available ports will be listed in HVC
Host/ Host setup “Name” dropdown.
NOTE: HVC Host requires a screen setting of at least 800 X 600.
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