Model PD690 Universal Process Meter Instruction Manual
22
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General Calibration/Scaling Instructions
Calibration is performed from the front panel using the ENTER but-
ton. It does not require any tools or disassembly of the meter. A
calibrated signal source is required if external calibration (E-[AL) is
selected.
For best results, allow meter to warm up for at least 30 minutes.
The calibration input signals must be within the range of the meter
and input 2 must be greater than input 1. (However, display for input
2 does not have to be greater than desired display for input 1.)
An Error message will appear if input 1 signal and input 2 signal are
too close together:
Table 2: Input Range Minimum Spans
Scale Using Internal Calibration (I-[al)
If I-[AL (Internal Calibration) was selected above in
Select Calibration
Method
, the meter can be scaled without applying an input. Desired
values can be programmed using the
Five Basic Digit/Display-setting
Instructions
described on page 19. See Figure 13:
Two-point External
Calibration Flow Chart
on page 18.
1. Push ENTER, when S[ALE appears push ENTER again.
2. I
nPt 1 flashes. Push ENTER and program desired value for input 1.
3. dSPy 1 flashes. Push ENTER and program desired value for
display 1.
4. InPt 2 flashes. Push ENTER and program desired value for input 2.
5. dSPy 2 flashes. Push ENTER and program desired value for
display 2.
Input Minimum Difference
Range: Between Input 1 & Input 2:
0-5 V 0.16 V
0-10 V 0.32 V
4-20 mA 1.60 mA
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