PRT Thermistor Thermocouple
ProbeConnection PatentedDWF connectors accepts spade lug, bare-wire, or banana
plugterminations
Universalreceptacle accepts
miniatureand standard
connectors
Communications RS-232and IR ports included, IEEE-488 (GPIB) optional
ACPower 100to 240 VAC, 50-60 Hz, 0.4A
DCPower 12to 16 VDC, 0.5 A (battery charges during operation from 14.5 to 16 VDC, 1.0A)
Battery NiMH,8 hours operation typical without backlight, 3 hours to charge, 500 cycles
Size 4.0”H x 7.5” W x 8.2” D (102 x 191 x 208 mm)
Weight 4.5lbs. (2 kg)
1
Thesensor generally limits the actual temperature range. Temperature accuracy specifications do not include sensor accuracy. Thermis-
tortemperature accuracy assumes a 10k
Ω
sensor.Thermocouple accuracy is with internal reference junction compensation; accuracy is
improvedwith external reference junction compensation. Thermocouple temperature accuracies are given for external reference junction
compensationand internal reference junction compensation, respectively.
2
Measurementaccuracy specifications apply within the operating temperature range and assume 4-sample averaging and 4 lead wires for
PRTs.With 3-wire RTDs add 0.05
Ω
tothe measurement accuracy plus the maximum possible difference between the resistances of the
leadwires.
3
Actualresolution can be set greater than typical resolution, but the added digits (0.0001 max.) may not be meaningful to the measurement.
3.2 Environmental Conditions
Although the instrumenthas been designed for optimum durability and trou-
ble-freeoperation, it must be handled with care. The instrument should not be
operated inan excessively dusty, dirty, or wet environment.Maintenance and
cleaning recommendationscan be found in the Maintenance section of this
manual.
Forfull accuracy, operate the instrument in ambient temperatures between
16–30°C (61–86°F). Thebattery may not charge properly at temperatures
above30°C. Do not operate the instrument in an environment colder than 5°C
(41°F) or warmerthan 40°C (104°F).
The instrument operates safely under thefollowing conditions:
•Operating temperature range: absolute 5–40°C (41–104°F) [full accuracy
16–30°C (61–86°F)]
•Ambient relative humidity: maximum 80% for temperature <31°C, de-
creasing linearly to 50% at 40°C
•Pressure: 75 kPa–106 kPa
•Vibration should be minimized
•Altitude less than 2,000 meters
•Indoor use only
1529 Chub-E4 Thermometer Readout
User’s Guide
10