Heath Consultants Optical Methane Detector (OM) User Manual
Page 5
5
S
YSTEM
S
PECIFICATIONS
OMD
TM
System Specifications
Configuration:
Double - ended
Sensitivity:
1 PPM / meter CH4
Measurement Range:
1 to 200 PPM
Accuracy:
± 10% (1 to 100 PPM range)
± 20% (100 to 200 PPM range)
Above 200 PPM = Not relatively
accurate
Display Ranges:
10, 30 and 90 PPM
Self - test:
During boot – up
Calibration/Test:
Via operator, self - contained
Calibration:
Via RS-232 through software
Base - Line Compensation:
Via RS-232 through software
Display:
Back-lit 2" x 6" graphics LCD,
adjustable contrast
Operator Interface:
Sealed membrane switch overlay
Operator Alarms:
Signal:
High pitch audible with
adjustable set point, pitch
increases with concentration.
Adjustable volume.
Error:
Low pitch audible with
adjustable set point
Error alarms
provided for:
Warm-up, Low Light,
Communication Failure &
Battery low
System Power:
72 Watts @ 12 VDC
System Voltage:
12 - 16 VDC
NOTE: To avoid damage to the OMD™ power box, the fuse
must be removed prior to charging or jumping the battery
in the survey vehicle!