Sierra Monitor Corporation 2060-00, 2060-10 manual Factory Alarm Calibration, Model Time Gas Cc/min

Instruction Manual

4.0ALARM CALIBRATION

4.1Factory Alarm Calibration

The module has been factory calibrated to alarm as indicated in Table 4.1 and as marked on the cali- bration label shipped with the module.

Model	Time	Gas	cc/min
2050-XX	100sec. 100 ppm NH3			50
2060-XX	60 sec. 500 ppm R11			50
		500 ppm R12		50
		50 ppm R22		50
		100 ppm R113		50
		70 ppm R123		50
		50 ppm R134a		50
		40 ppm R141b		50
		40 ppm R142b		50
		40 ppm R500		50
		70 ppm R502		50

Table 4.1

4.2 Frequency of Alarm Calibration Check

The manufacturer recommends that the calibration

of each gas sensor module be verified monthly dur- ing the first three months of operation and then quar- terly. More frequent checks are necessary during periods of extreme humidity and temperature changes. The monitor should have operated con- tinuously (uninterrupted) for at least 24 hours prior to calibration adjustment.

4.3Alarm Calibration Check Process

The output signal of the gas sensor module is calibrated using a calibration gas mixture containing a known concentration of the gas of interest and a balance of air, or using a substitute gas. The concentration of the span gas must be equal to the alarm point desired.

The equivalent substitute gas is 80 ppm Hydrogen (H2) for the Model 2050 and 150 ppm Carbon Monoxide (CO) for the Model 2060.

Calibration requires application of the span gas to the sensor and adjustment of the sensitivity adjustment po- tentiometer.

Warning: During calibration the alarm will turn on and remote alarms connected to the alarm relays will be activated. Disable the remote alarm if necessary.

		Fig. 4-1 Location of Calibration Voltmeter Connections and Adjustments
Page:	5	2050/2060 Gas Monitors (5/04)