Model 109 Temperature Probe
4
mount the 109 and limit solar radiation loading. See
Specifications
for a
complete list of compatible dataloggers.
6. Specifications
Features:
•
Measures air, soil, or water temperature
•
Compatible with AM16/32-series multiplexers
•
Easy to install or remove
•
Durable
•
Compatible with the following CRBasic dataloggers:
CR200(X) series, CR300 series, CR6 series, CR800 series, CR1000,
CR1000X series, CR3000, and CR5000
Sensor Element:
Measurement Specialties™ 10K3A1iA
thermistor
Survival Range:
–50 to 100 °C
Measurement Range:
–50 to 70 °C
Time Constant in Air:
30 to 60 s in a wind speed of 5 m/s
Maximum Cable Length:
1000 ft
Accuracy
1
Worst case:
±
0.60
°
C (–50 to 70
°
C)
±
0.25
°
C (–10 to 70
°
C)
Interchangeability Error:
±
0.10
°
C (0 to 70
°
C)
±
0.13 °C at –10 °C
±
0.15 °C at –20 °C
±
0.18 °C at –30 °C
±
0.20 °C at –40 °C
±
0.50 °C at –50
°
C
Steinhart-Hart
Linearization Error:
≤
0.03 °C (–50 to 70 °C)
Probe Weight and Dimensions
Weight with 10 ft cable:
136 g (5 oz)
Length:
10.4 cm (4.1 in)
Diameter:
0.762 cm (0.3 in)
1
Overall probe accuracy is a combination of thermistor interchangeability, bridge-resistor
accuracy, and error of the Steinhart-Hart equation. Interchangeability is the principle component
error. If needed, an estimate of the interchangeability error for 0 to 50 °C, that can be used as the
Offset
parameter of the
Therm109()
instruction, can be determined with a 1-point or 2-point
calibration.
7. Installation
If you are programming your datalogger with
Short Cut
, skip Section
(p. 5)
(p. 5)
.
Short Cut
does this work for you. See Section
, for a
Short
Cut
tutorial.