GASMAX II Operation & Maintenance Manual, Revision 7.0
Page 32
SENSOR REPLACEMENT
–
LOCAL AND DIRECT TOXIC SENSORS
For local or remote direct toxic sensors use GDS Corp type 10-95XX-RYYYY sensors
, where “ ” is the gas
type and “YYYY” is the full scale range
. For example, a replacement H2S sensor for 0-100 ppm would be
part number
“
-9515-
”.
Local Smart Sensors are automatically recognized by the GASMAX II when installed. If the sensor is the
same gas type as was previously installed, the sensor’s
calibration data
“Gain” and “ ffset”
will be
uploaded into the GASMAX II memory. All other parameters stored in the GASMAX II will be retained.
Remote direct toxic sensors are not automatically recognized by the GASMAX II. After installing the
sensor, e
xecute the “Install ew ensor” command found on the G M II T P I menu
page. This will erase previous calibration values and reset the Sensor Life value to 100%.
SENSOR REPLACEMENT
–
REMOTE TOXIC SENSOR TRANSMITTERS
GASMAX II remote toxic sensor transmitters use GDS Corp type 10-90XX-
YYYY toxic sensors, where “ ”
is the gas type and “YYYY” is the full scale range. or example, a replacement sensor
for a toxic sensor
transmitter for 0-
ppm would be part number “
-9015-
”.
SENSOR REPLACEMENT
–
LOCAL BRIDGE SENSORS
GASMAX II monitors use GDS Corp type 10-95XX-
YYYY bridge sensors, where “ ” is the sensor type and
“YYYY” is the full scale range. or example, a replacement catalytic bead sensor for
-100% LEL methane
would be
part number “
-9570-
”.
Local Smart Sensors are automatically recognized by the GASMAX II when installed. If the sensor is the
same gas type as was previously installed, the sensor’s calibration data “Gain” and “ ffset” will be
uploaded into the GASMAX II memory. All other parameters stored in the GASMAX II will be retained.
Although the sensor balance value is uploaded from the sensor during initialization, GDS Corp
recommends a Balance adjustment prior to full operation.
SENSOR REPLACEMENT
–
REMOTE BRIDGE SENSORS
GASMAX II monitors use GDS Corp type 10-95XX-
YYYY bridge sensors, where “ ” is the gas type and
“YYYY” is the full scale range.
For example, a replacement catalytic bead sensor for 0-100% LEL methane
would be pa
rt number “
-9570-
”.
Remote bridge sensors are not automatically recognized by the GASMAX II. After installing the sensor,
execute the “Install ew ensor” command found on the G M II T P I menu page.
This will erase previous calibration values and reset the Sensor Life value to 100%.
When replaced, bridge sensor excitation Voltage should be checked to ensure it is within required
tolerance. After allowing time for warm-up, the bridge sensor Balance adjustment should be performed
prior to calibration.
