10
12457-24: Insert M:
1 each: 1/8 inch; 3/16 inch; 1/4 inch; 3/8 inch Diameter Holes
12457-25: Insert E:
Blank, No Holes, (user drill)
Note
: 12457-21 is included as standard
4.
Design and function
4.1.
Description
The Palmer Wahl portable Dry Well Calibrator is designed for use on the factory floor or in the
calibration laboratory and is provided for calibrating thermometers, temperature switches /
thermostats, and RTD, thermistor and thermocouple sensors and probes. The operational safety of
the equipment is only guaranteed when used as planned (calibration of temperature sensors).
The temperature limit values specified should not be exceeded under any circumstances (see
Chapter 3 "Technical Specifications and Information "). The corresponding equipment, such as
reference thermometer or reference probe, must be selected, tested and validated according to
the application. Routine maintenance is recommended.
4.2.
Scope of Delivery
The portable Dry Well Calibrator is shipped in specially designed packaging, which should be
retained for future shipping, in the event the calibrator needs to be returned to the manufacturer
for repair or recalibration.
Standard supply list for model CDW30
•
Dry Well Calibrator
•
Standard Insert “J”
•
Insert Removal Tool
•
Power cord (1.5m) (North American plug is standard, European plug on “-E” models)
•
Certificate of Conformance
•
User Manual (available online at palmerwahl.com/downloads)
Inspect contents to the packing list to make sure all parts have been delivered.
WARNING!
Use only the supplied power cable
4.3.
Physical Description
•
The portable Dry Well Calibrator is housed in a sturdy steel enclosure with a painted
exterior and is provided with a carrying handle.
•
The back section of the housing contains the thermally insulated dry well with
interchangeable inserts. The well opening is located on top, behind the handle.
•
The front section of the housing contains the temperature controller for adjusting the
target temperature and displaying the current dry well temperature.
•
The portable Dry Well Calibrator includes heating and cooling circuits for realization of the
target temperature. Heating and cooling are controlled via Solid State Relays.
