Specifications - ACR Electronics SmartReader Plus Reference Manual

SmartReader Plus Data Loggers
81
Extending Cable Lengths
If you find the standard length of your ET Series Temperature Probe cable is not long enough
for your intended application, you can extend the cable yourself up to 30m (100ft). Use
2-conductor 22-gauge shielded wire. To prevent measurement errors, make sure the
connections are properly insulated and well protected from moisture.
Applications
The ET Series Temperature Probes lend themselves to a wide range of applications. For
example, to log temperatures from pipes, you can insert your ET Probe into an existing
thermometer well or strap the tip of the probe to the pipe for a surface conduction temperature
(for best thermal conductivity, epoxy the probe tip directly to the pipe and replace the pipe
insulation back over top). You can also easily measure duct temperatures by simply drilling a
hole in the duct and inserting your ET probe.
1.17.5

Specifications

ET-016 General Purpose Probe
Description:
Equation:
R25 Value:
Range:
Max. Temp.:
Resolution:
Accuracy:
Cable:
NTC thermistor and cable potted into the end of a 25mm (1")
long by 5mm (3/16") diameter cylindrical stainless steel tip.
45
10k ohms
-35 to 95°C (-30 to 200°F)
150°C (300°F)
Refer to Figure C-1
±0.2°C (±0.36°F) from the temperature values listed in Table
C-1 over the range of 0 to 70°C (32 to 158°F)
±0.5°C (±0.9°F) from -35 to 0°C (-30 to 32°F)
±0.5°C (±0.9°F) from 70 to 120°C (158 to 248°F)
6m (20ft) standard length with a Teflon® protective jacket;
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