Minco TI334
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5
Calibration Method 2
Equipment:
Current calibrator (±0.02% accuracy & 1
µ
A resolution)
Small slotted screwdriver
Procedure
1. Hook-up the equipment as shown in Figure 4. Pull terminal block off from PC board, screw
wires onto block, then re-plug block onto board.
2. Determine and set the meter’s switch settings to correspond to your desired temperature
range as described in
Method 1, steps 2 and 3
.
3. Set the calibrator to output 4.000 mA.
4. Adjust the meter’s Zero potentiometer (Fig. 3) until the meter reads your low end (Zero)
temperature.
5. Set the calibrator to output 20.000mA.
6. Adjust the Span potentiometer until the meter reads your high end (Span) temperature.
7. Repeat Steps 3 – 6 until no further adjustment is necessary.
Current Calibrator
2
V- V+
1
4 - 20 mA
METER
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