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1529 Chub-E4 Thermometer Readout
Environmental Conditions
Probe Connection
Communications
AC Power
DC Power
Battery
Size
Weight
The sensor generally limits the actual temperature range. Temperature accuracy specifications do not
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include sensor accuracy. Thermistor temperature accuracy assumes a 10kW sensor. Thermocouple
accuracy is with internal reference junction compensation; accuracy is improved with external reference
junction compensation. Thermocouple temperature accuracies are given for external reference junction
compensation and internal reference junction compensation, respectively.
Measurement accuracy specifications apply within the operating temperature range and assume 4-sample
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averaging and 4 lead wires for PRTs. With 3-wire RTDs add 0.05W to the measurement accuracy plus the
maximum possible difference between the resistances of the lead wires.
Actual resolution can be set greater than typical resolution, but the added digits (0.0001 max.) may not be
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meaningful to the measurement.
2.2 Environmental Conditions
Although the instrument has been designed for optimum durability and trouble-free
operation, it must be handled with care. The instrument should not be operated in an
excessively dusty, dirty, or wet environment. Maintenance and cleaning recommenda-
tions can be found in Section 9, Maintenance on page 123.
For full accuracy, operate the instrument in ambient temperatures between 16–30 °C
(61–86 °F). The battery may not charge properly at temperatures above 30 °C. Do
not operate the instrument in an environment colder than 5 °C (41 °F) or warmer than
40 °C (104 °F).
The instrument operates safely under the following conditions:
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PRT
Patented DWF connectors accepts spade lug,
bare-wire, or banana plug terminations
RS-232 port included, IEEE-488 (GPIB) optional
100 to 240 VAC, 50-60 Hz, 0.4A
12 to 16 VDC, 0.5 A (battery charges during operation from 14.5 to 16 VDC, 1.0A)
NiMH, 8 hours operation typical without backlight, 3 hours to charge, 500 cycles
4.0" H x 7.5" W x 8.2" D (102 x 191 x 208 mm)
4.5 lbs. (2 kg)
Ambient 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, decreasing
linearly to 50% at 40 °C
Pressure: 75 kPa–106 kPa
Vibration should be minimized
Altitude less than 2,000 meters
Indoor use only
Thermistor
Thermocouple
Universal receptacle accepts
miniature and standard
connectors
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