Teledyne 465L operation manual Memory Reset, Zero Calibration

Teledyne API Model 465L O3 Monitor Operation Manual

Signal Name	Rear Panel Label	Function
XRELAY 11	STRM 4 – 2	STREAM 4 HI ALARM
XRELAY 12	STRM 4 - 3	STREAM 4 HI-HI ALARM
XRELAY 13	STRM 5 - 1	STREAM 5 ACTIVE
XRELAY 14	STRM 5 – 2	STREAM 5 HI ALARM
XRELAY 15	STRM 5 - 3	STREAM 5 HI-HI ALARM
XRELAY 16	STRM 6 - 1	STREAM 6 ACTIVE
XRELAY 17	STRM 6 – 2	STREAM 6 HI ALARM
XRELAY 18	STRM 6 - 3	STREAM 6 HI-HI ALARM
XVALVE 1	N/A	STREAM 1 INPUT VALVE
XVALVE 2	N/A	STREAM 2 INPUT VALVE
XVALVE 3	N/A	STREAM 3 INPUT VALVE
XVALVE 4	N/A	STREAM 4 INPUT VALVE
XVALVE 5	N/A	STREAM 5 INPUT VALVE
XVALVE 6	N/A	STREAM 6 INPUT VALVE

7.2.3.3. Memory Reset

This function is currently disabled.

7.2.3.4. Zero Calibration

The zero calibration allows the instrument to calibrate its internal ozone offset factor. This should only be done with a source of zero air connected to the “Sample In” port of the M465L. Allow the instrument to stabilize on the zero air source before attempting to zero. This normally takes 10-15 minutes.

When entering the Zero Calibration menu, the prompt “ENT TO CAL” appears on the display. Simply confirm the calibration by pressing the ENT button to perform the calibration (to abort the calibration, press and hold the CFG button to return to the previous menu level.) After pressing ENT, the instrument will automatically exit the menu mode and return to Concentration mode. The concentration reading should quickly go to zero. Please note that while measuring zero air, a certain amount of noise or “dithering” of the concentration about the zero point will occur and is normal. This noise is typically 1-3 ppb (0.001 - 0.003 ppm) in magnitude.

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