Sierra Monitor Corporation 4501-05 Model 4501-XXToxic Gas Sensor Module, Sub-RoutineA, Function

				Model 4501-XX Toxic Gas Sensor Module
5.4 MAINTENANCE SUB-MENU
Key		Function	Display	Description	Reference
			H2S	Default Display (example 4501-05)
			XX PPM
M	E	Mode	H2S
S	T		CALIB:
M	E	Down	H2S
S	T		MAINT:
M	E	Enter	Cal: 4mA	Enter Calibration 4 mA Menu
S	T			Banner: Use [S] or [T] to change 4mA output, [E] when done
				A multi-meter should be inserted into the current loop
				to measure the loop current between the power and
				the sensor module No gas is required for this step
M	E	Enter	4mA	Acknowledges 4mA calibration	or Sub-Routine A
S	T		DONE
M	E	Down	H2S
S	T		MAINT:
M	E	Enter	MAINT	Enter Calibration 20 mA Menu
			CAL:20mA	Banner: Use [S] or [T] to change 20mA output, [E] when
S	T
				done
				A multi-meter should be inserted into the current loop
				to measure the loop current between the power and
				the sensor module No gas is required for this step
M	E	Enter	20mA	Acknowledges 20mA calibration	or Sub-Routine A
S	T		DONE
			H2S
			MAINT:
M	E	Down	MAINT:
S	T		4mA
M	E	Down	MAINT:
S	T		20mA
M	E	Enter	H2S	Enter Range Menu
S	T		Range
			M- Range	Enter Calibration Range Menu
			100 PPM	Banner: Use [S] or [T] to change range, [E] when done
M	E	Enter	Range	Acknowledge range selection
S	T		DONE
				Sub-Routine A
			CAL: XmA	The expected range of the 4mA and 20mA is limited to factory
				defined values. If the actual signal is outside of this
			ERROR!	predefined range, an error is displayed indicating a hardware
				or installation problem. Contact technical support.
				Table 5-3
				Maintenance Sub Menu

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