Temptek VETERAN LS Series, Instruction Manual

Page: 43 / 80

Temperature Control Units : With ‘LS’ Series Instrument
Page: 43
TEMPTEK, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-6352 Fax: 317-881-1277
Service Department Fax: 317-885-8683
www.Temptek.com
(figure 5.4A) is a temperature transducer. The transducer is
embedded into a threaded bulb
well. The transducer converts the
temperature of the water into a
proportional current output, which
the microprocessor controller
reads, displays, and bases it
controlling functions. The gain is
automatically calibrated within the
microprocessor electronics. The
zero adjustment potentiometer is
located on the CPU.
B. The temperature transducer and
instrument circuitry is very stable. A
small drift may occur over time. To ensure correct temperature
reading, calibrate the probe annually or per your facility calibration
standards. Operation in high humidity and high vibration
environments may require more frequent calibration.
C. The operator should follow this procedure to calibrate the probe.
1. Disengage operations and verify all system pressure is
relieved and the unit’s pressure gauges read “0”.
2. Disengage main power supply and verify the Power light on
the display is “off”.
3. Remove the To Process temperature probe and insert
a 1/2” plug in its place
(figure 5.4B). To complete
the calibration procedure,
the unit will be operated
at full flow and pressure.
The plug is to maintain the
mechanical integrity of the
unit during the calibration
procedure.
4. Prepare an ice water
bath. The operator should
place an accurate digital
thermometer in the ice
water bath to read the temperature of the bath. The probe
will be calibrated to the temperature of the ice water bath.
5. Place the probe in the ice water bath.
6. Start the unit.
7. Reduce the unit’s set point, via the Down Arrow push button
to 32°F.
8. With the unit in the operations mode, the “to process”
Typical sensor probe
Figure 5.4A
Plug
Figure 5.4B