Double Power Technology T-708 Návod k obsluze stáhnout pdf (Strana 124)

124 708-DS / 709-DS Operator’s Manual

5 Maintenance and Troubleshooting

Water Bath Temperature Probe Accuracy Test

The temperature probe can be tested using a high-quality ohmmeter

capable of at least four-digit resolution and a known temperature bath.

Both the multi-meter and the bath temperature must be traceable to a

known reference standard such as NIST.

1 Place the probe into a water bath with a known temperature and

allow several minutes for the probe to equilibrate.

2 The resistance is measured by attaching the leads of the multi-meter

to the top and shank of the ¼-inch phone plug.

3 Refer to the table on Page page 124 to find the resistance value of the

probe at the bath temperature. Temperatures between the values

listed may be interpolated.

4 Probes are interchangeable and manufactured with a tolerance of +/-

0.1 °C. Probes found to be outside of the tolerance of +/- 0.1 °C

should be replaced.

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Double Power Technology T-708 Návod k obsluze Strana 124