Bacharach HGM 300 Manual

This procedure describes the use of gas verification kits with the HGM PC software.

MATERIALS REQUIRED

Reference gas

Variable flow regulator

Approximately 5 feet of 3/16" tubing

Plastic stem connector

Computer with HGM 300 software installed

(available at www.mybacharach.com)

PROCEDURE

1. Power up the HGM. The green LED on the monitor will blink until the warm-up cycle is complete.
2. Connect the variable regulator to the reference cylinder and connect the tubing to the variable regulator.
Connect the plastic stem connector to the other side of the tubing.
3. Connect the RS232 cable from the PC to the HGM's RS232 connector located in lower left side of the
monitor.
NOTE: For instructions on PC software and setup, see the instruction manual.
4. Launch the PC software. A series of beeps will sound as the software reads all the HGM registers.
5. Verify Rezero Mode is set to auto by reading the system parameter list. If it is not set to Auto, do the
following:
a. Select the "Edit Pull down Menu".
b. Choose the "System" item from the selection list.
c. Change the Rezero Mode to "Auto".
d. Press the Enter key to update the setting.
The program should respond with "System Data Updated".

(On version 1.0 software it is necessary to select the "HGM Pull down Menu" and then send the

setup in order to confirm the changes)
6. Select the "HGM Pull down Menu" and choose the setup item from the menu list. This will update the setup
from the HGM.
7. Select the "Edit Menu" and choose "Zones" from the menu item list.
8. Select zone by pressing the Enter key. Modify the parameters for Zone 1:
a. Change the refrigerant selection to the reference cylinder type
b. Change the distance to 5 ft.
c. Press the Enter key, then the ESC key.
d. Verify that the PC software recognizes that the HGM Zone data was updated.
NOTE: Be sure to wait for response from the PC software. Selecting another menu before the response is
echoed will cause the communications to timeout. On version 1.0 software it is necessary to select the "HGM
pull down menu" and then send the item to the setup in order to confirm the changes.
9. Select "HGM Menu" and choose "Zone Hold" from the menu list.
P/N: 3015-3843 (Rev 2)
Testing HGM 300 with Gas Verification Kit
BACHARACH
Using PC Software
3015-3843 Rev. 2
February 2017
1