Fluke 2700G, Руководство по калибровке

Страница: 16 / 18

2700G
Calibration Manual
8
Calibration Tests
Calibration verifies the complete operation of the Product and measures the
accuracy of each function against Product specifications. If the Product fails a
part of the test, adjustment or repair is necessary. See “Serial Point Adjustment”.
It is recommended that you apply full-scale pressure to the Product and then vent
before calibration adjustment. Let the Product stabilize for 1 minute after venting
before continued testing.
Note
Calibration and adjustment can be performed anywhere in the
operating ambient temperature range of 18
°
C to 28
°
C (64
°
F to
82
°
F). Calibration or adjustment outside this temperature range will
invalidate the compensation program in the Product. For optimum
results, the calibration or adjustment should be done with ambient
temperature as close as possible to 23
°
C (72
°
F).
Connections
The Product uses a ¼ inch NPT male connection in the pressure input port.
Adapters may be necessary to connect to the pressure standard. Make sure the
hose, tubing, and fittings have a rated working pressure at or above the pressure
of the unit. Make sure there are no leaks when you do the calibration process.
Use Teflon tape where necessary.
Initiate Communication
Serial communications can be set up with terminal communication software on a
PC, such as Windows HyperTerminal.
1. Connect the USB RS232 cable to the serial jack on the rear of the Product.
2. Connect the other end of the cable to the PC. Terminal settings are shown in
Figure 2.
hmo001.bmp
Figure 2. Terminal Settings