BIRD Thruline APM-16, Руководство по эксплуатации

Страница: 31 / 37

Maintenance
21
Calibration
Calibration of the Bird APM-16 will be required after replacing the meter or the
instrumentation module, and also when the calibration certification expires.
Note:
Calibrating the unit, or disturbing the calibration label,
within the one-year warranty period will void the warranty.
Calibration Environment
For best results, make sure that the workspace meets the following
requirements:

The workspace should be free from electrical noise and radiated
signals.

The workspace and equipment should be at a uniform and stabilized
temperature, between 20 and 25°C (68 to 77°F).

The relative humidity should be less than 50% and noncondensing.
Equipment Required
To calibrate the Bird APM-16, you will need the following equipment:

Standard digital multimeter with DC voltmeter resolution of 0.01 V or
better (Fluke Model 87)

Bird 4401A200 plug-in calibration element

Regulated DC power supply, supplying 2 ± 0.1 V

50 ohm coaxial cables (RG-58-U), no more than 3 feet (1 m) long

BNC “T” adapter
Figure 11 Calibration Setup