MGS-250 Manual
36 6490-9000
Revision
4
Parameter
Description
Display Mode
The display can be turned on by using this
parameter. When set to ON the display never shuts
off (all operating modes). When ON the display
shows the current gas concentration (or 0 if below
the squelch). Note that P.-09 is disabled if P.-19=0.
00
OFF during normal operation when the ppm
value is below the alarm setpoint (default)
01 ON
In either case, the display will blink the measured
PPM value during an alarm state.
RS485 Node Address
Sets the RS-485 node address (0001 to 0255).
Gas Groups / Specific Gas Selection
Selects either gas group number for broadband
operation or specific gas name for gas-specific
mode.
Broadband: Select from 4 groups of gases:
1 R134a, R404a, R407a, R407c,
R407f, R427a, R507,
HFO1233ZD, R448a, R449a
2 R422a, R422d HFO1234YF, and
HFO1234Ze, R513a, R452a
3 R22 (by itself)
4 R32 (by itself).
Specific Gas: The actual refrigerant name is shown.
Select the appropriate refrigerant.
NOTE:
Gas-specific detectors are factory calibrated
to a single refrigerant using specialized
manufacturing equipment. If another refrigerant is
selected which differs from the factory calibrated
setting, the built in calibration no longer applies.
Further improvement in detector accuracy may be
gained by applying calibration gas containing the
newly selected refrigerant and adjusting the gas
detector reading to match (see Parameter P.-17).
www.calcert.com
1.888.610.7664
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