Table 7-4: Signal I/O List

Signal Name

Rear Panel Label

Function

AUX 1 IN

CTRL IN - 1

UNDEFINED

AUX 2 IN

CTRL IN - 1

UNDEFINED

RELAY 1

RELAY 1

SENSOR OK

RELAY 2

RELAY 2

HI ALARM

RELAY 3

RELAY 3

HI-HI ALARM

STAT OUT 1

STATUS OUT – 1

SENSOR OK

STAT OUT 2

STATUS OUT – 2

INVALID READING

STAT OUT 3

STATUS OUT – 3

CHECK LAMP

STAT OUT 4

STATUS OUT – 4

PNEUMATIC ERROR

STAT AUX 1

AUX OUT – 1

UNDEFINED

STAT AUX 2

AUX OUT – 2

UNDEFINED

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 it’s internal ozone offset factor. This should only be done with a source of zero air connected to the “Sample In” port of the M465M. Allow the instrument to stabilize on the zero air source before attempting to zero. This normally takes 10-15 minutes.

If the zero calibration is enabled, the internal ozone offset factor will automatically be reported as zero every 6 minutes. If the zero calibration is disabled, then manual calibration is necessary based on the customer’s applications. For normal applications, the zero calibration is not necessary.

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.

P/N 06160D DCN6409 Teledyne API Model 465M O3 Monitor Instruction Manual - Page 37

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Teledyne 465M instruction manual Zero Calibration, Signal Name Rear Panel Label Function