2. Refer to FIG. A, “Calibration Kit Setup”. Attach the regulator to the calibra-
tion gas cylinder (make sure the valve is closed). Attach the hose from the cal-
ibration adapter kit to the regulator, then place the adapter cap over the sen-
sor housing on the back of the instrument.
NOTE:
The regulator used with the Dwyer Instruments Calibration Kit has a
fixed flow rate of 0.5 Liters/Minute. If a different calibration kit is used, make
sure the flow is set to approximately 0.5 Liters/Minute. A flow rate greater than
1 Liter/Minute will result in an inaccurate reading.
3. Span Calibration: Turn on the valve on the regulator and allow gas to flow
for at least three minutes. Press the key until the display reads CAL0.
Press and hold the and enter keys for five seconds until the lower dis-
play reads CAL1. Verify that the upper display reads between 125 and 400,
then press the
and keys simultaneously. The display will blink to
show the calibration value has been stored. If the value is <125 or greater than
400, the sensor is bad needs to be replaced. Refer to “SENSOR REPLACE-
MENT”.
4. Index the menu back to the home position. The instrument should read 200
PPM +/- 2.
Push calibration adaptor
cap over sensor housing.
1. CALIBRATION
GAS CYLINDER - 200 PPM CO/AIR
2. REGULATOR:
CALIBRATION KIT A-450-1
3. ADAPTER:
CALIBRATION KIT A-450-1
Adapter also available
seperately: Part Number A-450-2
Fig. A
6
HOLD
STORE
ENTER
ON
OFF
BACKLIGHT
INDEX
HOLD
STORE
ENTER
ON
OFF
BACKLIGHT
INDEX
HOLD
STORE
ENTER
ON
OFF
BACKLIGHT
INDEX
HOLD
STORE
ENTER
ON
OFF
BACKLIGHT
INDEX
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