Omega 868F, User Manual

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2.2 BATTERY INSTALLATION
A nine volt battery is supplied with the instrument but is not installed, to
avoid possible damage due to leakage during storage or shipment.
Install the battery as follows:
1. Remove the instrument back cover.
2. Insert the battery in place; make sure correct polarity is observed
and battery terminals are contacting the battery clips.
3. Install back cover.
SECTION 3 OPERATION
3.1 SAFETY PRECAUTION AND NOTES
WARNING
Do not subject the probe to a voltage more than 30 V
RMS, 42.4 V peak above earth ground, or a shock
hazard may result.
NOTE
Use only 100 ohm platinum RTD sensors that conform to the DIN
43760 standard (alpha = .00385). Other type sensors will give
inaccurate results. Maximum allowable lead resistance for
rated accuracy is 50 ohms per lead (four wire) or 10 ohms per
lead (three wire).
NOTE
For best accuracy, it is recommended that the instruments be
used in the four wire configuration with a suitable four wire
probe. If three wire probes are used with the instrument in the
four wire mode, noisy readings will result (the displayed reading
will jump around).
3.2 CONTROL AND DISPLAY
Figure 3-1 shows the control layout and nomenclature. The following
paragraphs contain information on probe connection, three and four
wire selection, range selection, and basic temperature measuring
procedures.
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