164 • Overview
EAGLE 2 Operator’s Manual
Appendix E: ESM-01 Toxic Sensors
Overview
The ESM-01 sensors are used to monitor levels of a variety of toxic gases. This appendix
describes the EAGLE 2’s ESM-01 sensors and includes instructions to use an EAGLE 2
that has one or more ESM-01 sensors installed. It also includes instructions to replace an
ESM-01 sensor.
Table 19: ESM-01 Sensor Specifications
Description
Table 19 above lists the available ESM-01 sensors. The ESM-01 is a smart sensor that
stores sensor parameters including the target gas, detection range, alarm points, and
calibration settings in its memory. So a sensor can be calibrated at the factory and shipped
as a replacement sensor without the need to calibrate the sensor when it is installed as long
as it is installed during the sensor’s valid calibration period which is typically 3 months. In
addition, you can change an existing ESM-01 channel from one type of ESM-01 sensor to
another and the EAGLE 2 will automatically load all the sensor parameters and configure
the ESM-01 channel for the new sensor without the need to enter CONFIGURE
CHANNELS or CONFIGURE GASES in Setup Mode. See “Replacing the ESM-01
Sensor or Changing Sensor Type” on page 180 for instructions to replace or change an
ESM-01 sensor.
Target Gas
Detection
Range (ppm)
Reading
Increment
Alarm 1
Factory
Setting
Alarm 2
Factory
Setting
STEL
(ppm)
TWA
(ppm)
Ammonia
(NH
3
)
0 - 75.0
0.5 ppm
12.0 ppm
25.0 ppm
35
25
Arsine
(AsH
3
)
0 - 1.50
0.01 ppm
0.20 ppm
0.50 ppm
OFF
OFF
Chlorine
(Cl
2
)
0-3.00
0.02 ppm
0.50 ppm
1.50 ppm
1.00
0.50
Hydrogen
Cyanide
(HCN)
0 - 15.0
0.1 ppm
3.00 ppm
5.00 ppm
4.7
OFF
Phosphine
(PH
3
)
0 - 1.00
0.01 ppm
0.10 ppm
0.30 ppm
1.00
0.30
Sulphur
Dioxide
(SO
2
)
0 - 6.00
0.05 ppm
1.00 ppm
2.00 ppm
1.00
0.50
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