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Teledyne 5000B - Near Infrared Photometer User Manual

Page 42

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3 Operation

/Control Unit

Model 5000B

3-14 Part I

Teledyne Analytical Instruments

This function and the TRACK/HOLD feature will prevent false alarms

while performing remote or autoscheduled calibrations. These functions are
not applicable if the calibration is initiated through the front panel. To enter
the Calibration/Hold Timer function, you must:

1.

Press the System key to start the System function:

DIG_FILT SELF-TEST
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2.

Using the Right or Left arrow keys, select MORE and press

Enter: The Second System screen appears:

AUTOCAL FILSOL TRACK
CAL-HOLD-TIMER MORE

or

AUTOCAL FILSOL HOLD
CAL-HOLD-TIMER MORE

3.

Select with the Right or Left keys CAL-HOLD-TIMER, and

press the Enter key to access this function menu:

Calbrt hold: 3 min

Sample hold: 1 min

The calibration hold time is set on the first row, while the sample hold

time is set on the second row. To select one or the other, use the Right or
Left keys. To modify the time of either timer, use the Up or Down keys.
The time is in the minutes.

3.3.11 Analog 4 to 20 mA Output Calibration

This function will let the operator calibrate the 4 to 20 mA analog

output to match the display reading. A DMM configure as a DC ammeter is
needed. The DMM should be connected across the output terminals of the 4
to 20 mA output to monitor the output current. To enter the 4 to 20 mA
output adjust function, you must:

1.

Press the System key to start the System function:

DIG_FILT SELF-TEST
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2.

Using the Right or Left arrow keys, select MORE and press

Enter. The second System screen appears:

AUTOCAL FILSOL TRACK
CAL-HOLD-TIMER MORE