Fluke Calibration 1586A Super-DAQ, Руководство по калибровке, Страница: 36 / 54

1586A
Calibration Manual
28
1586-2588 Module CJC Accuracy Verification
1. Connect 10 calibrated E-type thermocouples with TC adapors to channels 1
through 10 on the Module TC input connectors.
2. Insert all thermocouples into a drywell calibrator which is set and stabilized at
25
°
C.
3. Configure the channels of the Product for E-type thermocouples.
4. Insert the reference thermistor probe into the drywell to measure the actual
temperature.
5. Use the reference thermometer with reference thermistor probe and the
thermocouples with the Product (UUT) to measure the drywell temperature
until all readings are stable.
6. Compare the 10 thermocouple readings and the reference thermometer
reading. The maximal difference should be <0.25
°
C.
Calibration Adjustment
Calibration adjustment should be done at the desired time interval, or whenever a
verification test indicates that a Product function is out of tolerance. Product
accuracy stays within specifications only if the adjustment procedure is done at
regular intervals. A one-year interval is adequate for most applications. Product
accuracy specifications are not valid beyond the one-year interval.
Adjustments are accessed through both the remote interface and front panel with
a series of adjustment steps. The remote program directs the test equipment to
apply a series of shorts, opens, voltages, currents, and resistances to the
Product. At each step, the Product internally makes the necessary adjustment to
bring the Product into specification. No internal mechanical adjustments are
necessary.
With an automated, computer-controlled procedure, the calibration and
verification procedures can be done in under an hour. A MetCal program is
available at www.fluke.com to adjust the Product.
Adjustments are password protected to prevent accidental or unauthorized
adjustments. The admin password must be entered through the front panel or
remote interface.
Unlock the Product
To unlock the Product for adjustments from the front panel:
1. Push
Instrument Setup .
2. Push Calibrate .
3. Use the numeric keypad to enter the 4-digit admin password. The Product is
shipped from the factory with the password set to 1586 .
4. Push OK to enter the password and continue the adjustments procedure.