Conspec Controls CS0352-MP Benutzerhandbuch - Seite 11

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CO Sensor Calibration

Required parts:

These parts are included in the P1879-CO-250-NC-3 Calibration Kit.

To calibrate the sensor the panel door must be opened so the user can view the LCD display on the

Universal Transmitter and the adjustable flow regulator.

The UP99 Universal Programmer is used to put the Universal Transmitter into Calibration mode. To do so

point the programmer at the infrared sensor on the top of the Universal Transmitter, then the unlock code

must be entered. To unlock the Universal Transmitter press 25 (the unlock code will not be displayed on

the screen) then press enter (E) on the programmer. Next enter the password which is factory defaulted to

1 then press enter (E). When the monitor is unlocked enter 111 then press enter to access calibration

mode. When in calibration the PLC will shut off the pump so it does not interfere with the calibration. The

Universal Transmitter interface is also explained in the Universal Transmitter Manual.

Once in Calibration mode turn the handle of the ball valve on the right side of the enclosure to the upward

position and connect the 3/16" I.D. hose from the 3LPM regulator on the "zero gas" cylinder to the

calibration port on the right side of the enclosure. The status light on the bottom of the Universal

Transmitter will turn green when in calibration mode indicating that the zero gas should be applied to the

sensor. Open the valve on the regulator and apply the zero gas.

Make sure that the adjustable flow regulator inside the panel is fully open to allow maximum flow. Apply

the zero gas for two minutes. After two minutes or a stabilized reading, point the IR programmer at the

Universal Transmitter and press enter. The status light will now turn red indicating the monitor is ready to

have the "span gas" applied. Remove the zero gas and apply the span gas for two minutes.

Notice the LPM level on the flow regulator; it should be approximately 3 LPM. The sample flow rate will

have to be adjusted to match this flow for the most accurate sampling possible. After two minutes or a

stabilized reading, point the IR programmer at the Universal Transmitter and press enter. The monitor will

display if the calibration has passed or failed and go into standby mode for 60 seconds to allow the PPM

level to drop to avoid false alarms.

Immediately after you have finished the span gas calibration, while the monitor displays either "Cal Pass" or

"Cal Fail" quickly turn off and remove the span gas and turn the handle of the ball valve back to sample

mode. The PLC will automatically enter startup mode and turn the pump back on while the monitor is in

standby mode to lower the gas value.

At this point the adjustable flow regulator will need to be adjusted to match the 3LPM flow rate that the

sensor was calibrated at.

When the sample panel is in calibration mode the pump is turned off and all activities such as high pressure

blow back and low flow blow back are disabled. The Universal Transmitter calibration is also explained in

the Universal Transmitter Manual.

Zero gas (20.9% O2)

Span gas (250 PPM CO)

3/16" I.D. rubber hose

3LPM regulator

UP99 Universal IR programmer