Bacharach HGM300 Installation & Operation Manual - page 13
Instruction 3015-4149
13
SECTION 7
Programming the HGM300 Using the RDM800
1. From the System Screen on the RDM800, press the button adjacent to “ZONES”. Then press the
button adjacent to ZONE 1 to display its Zone Setup Screen #1.
2. Press button adjacent to “LOCATION”. Then using the keypad left/right buttons to move across and
the up/down buttons to enter alphanumeric data, enter a location for zone one (up to 12 characters).
Press “ENTER” to lock in data and allow you to move to the next function.
3. Press the “REFRIGERANT” button. Using the up/down keys, select the proper refrigerant gas for this
zone; then press “ENTER”.
4. Press the “DISTANCE” button. Use the left/right keys to move across and the up/down keys to enter
the length of tubing for this zone; then press “ENTER”.
NOTE: To bypass a zone during normal
operation, set the distance to “0”.
The word “DISABLED” will appear in place of the PPM reading
for this zone in the Zone Screen.
5. Press the “AVE TEMP” button. This function is used to ‘standardize’ the readings to ‘Standard
Temperature and Pressure’ (STP, which is 1 atmosphere and 25 degrees C). This function is rarely if
ever used. The PPM readings displayed are inversely related (i.e., as temperature goes up, PPMs
decrease) to the temperature of the sample (and thus the sample area). If the sample area
temperature does not vary from standard temperature (i.e., 25
°C or 77°F) significantly the PPM
reading will not be greatly affected. A 10
°C (18°F) change in the area/sample temperature will result
in ~3.5% change in the PPM reading. The Ave temp. parameter can be used to compensate the PPM
reading as the sample/sample area temperature varies from “standard” temperature (25
°C or 77°F).
The adjustment range is from –50 to +70 degrees C.
6. Use the left/right and up/down keys to change the Ave temperature, and the “ENTER” key to
complete the action.
7. “CURRENT PPM” – This function cannot be accessed.
8. Press the “LOG INTERVAL” button only if the interval is to be reduced from the 1440 minute (once
every 24 hours) factory setting to a lower setting. (At the 1440 minute setting the HGM300 will record
the observed PPM level once every 24 hours.
This can be reset to lower numbers to trend a problem
in a given zone.)
9. Press the “MORE” button to display Zone Setup Screen #2.
System Screen
Zone Setup Screen #1