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General Information
US
SM5000 Sampling Module - DC Pump Model
1.1.4 Terminology
Tab. 2 Terminology
Electrochemical sensor
Sensor employing the reactions of chemicals generating electric
currents to detect certain gases.
Exhaust gas Gas after it has passed through the sensor.
Flow rate The volume-per-minute of gas in the sample line.
Span gas value
The gas concentration in % LEL that is used to set the calibration value
during spanning. This value is usually printed on the gas cylinder
containing the gas.
Spanning
Process of placing a full scale or up scale meter reading on the display
by using calibration span gas cylinders.
Zero
A zero (0) indication on the meter display usually indicates ambient air
present or no hazardous gases present.
Zeroing Processes for placing a zero indication on meter display.
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