25
7.2 Auto Ramping the Output
Auto ramping gives you the ability to continuously apply a varying stimulus from the
calibrator to a transmitter, while your hands remain free to test the response of the
transmitter. When you press
, the calibrator produces a continuously repeating
0 % - 100 % - 0 % ramp in your choice of three ramp waveforms :
0%-100%-0%
40-second smooth ramp
0%-100%-0%
15-second smooth ramp
0%-100%-0%
Stair-step ramp in 25 % steps, pausing 5 seconds at each
step.
Press any key to quit ramp output function.
7.3 Factory Reset
Factory reset consists of the following items:
The upper and lower working modes recover to DC V measurement function.
Automatic shutdown time is reset to be 30 min and becomes effective.
LCD backlight brightness is reset to be 60%.
Output range is recovered to be factory default.
Press
and
simultaneously until the buzzer work and the factory reset is
executed .
7.4 Calibrating a Transmitter
Use the measurement (upper display) and source (lower display) modes to calibrate a
transmitter. This section applies to all but pressure transmitters. The following example
shows how to calibrate a temperature transmitter.
Connect the calibrator to the instrument under test as shown in Figure 7.4-1. Proceed
as follows to calibrate a transmitter:
1.
Press
to select loop current (upper display) .
2.
Press
(lower display). If desired, continue pressing this key to select the
