7 - Technical Specifications
59
Chapter 7
| Technical Specifications
Gas monitor
Function
Manufacturer :
OLDHAM SIMTRONICS
Function:
Area Gas Monitor
Type:
BM 25A and BM 25AW (wireless)
Gas
Configuration:
One to four sensors (catalytic, electrochemical, infrared
or PID sensors)
Gases detected:
Combustible, toxic and oxygen
Measurement:
Continuous on all sensors in operation
Sensors:
Plug & Play
Display
■
Graphic LCD with backlit
■
Clear messages
■
Flip-Flap
function
Various alarms
Operations check:
■
Self-test at start-up
■
Unit flashes every 2 minutes (Confidence test)
Alarm thresholds:
■
Combustible: 2 adjustable instantaneous thresholds
in 0-60 % LEL range
■
Oxygen: two adjustable instantaneous thresholds
over the sensor's entire measuring scale (over-
oxygenation and under-oxygenation) or two optional
under-oxygenation thresholds
■
Toxic (per sensor): two adjustable instantaneous
thresholds over the sensor's entire measuring scale
■
Toxic (per sensor): two adjustable averaged
thresholds over the sensor's entire measuring scale
for STEL and TWA monitoring
Gas Alarm:
■
Visual and Audible alarm (1Hz and 2Hz)
■
Clear message on the display
Summary of Contents for BM 25A/AW
Page 1: ...BM 25A AW Area Gas Monitor Part Number NP25AEN Version C 4 User Manual ...
Page 10: ...10 BM 25A AW Instruction Manual Product Overview Figure 2 Product Overview ...
Page 18: ...18 BM 25A AW Instruction Manual ...
Page 34: ...34 BM 25A AW Instruction Manual ...
Page 70: ...70 BM 25A AW Instruction Manual ...
Page 75: ...9 Special Instructions 75 CSA Control Drawing for BM 25A AW Connections ...
Page 78: ...78 BM 25A AW Instruction Manual ...