6. Specifications
Sensor description:
100 ohm Class A platinum (PT100)
1
Measurement uncertainty
2
:
±0.1 K over –40 to +40 °C (-40 to +104 °F) range
±0.3 K over –60 to 60 °C (–76 ° to +140 °F) range
Temperature measurement range:
–60 to 60 °C (–76 ° to +140 °F)
Time constant in air:
20 seconds to 63% of step change in 1 m/s wind
Resolution:
Two decimal places (0.01 °C)
Connector type:
M12 (to extend beyond 1 m [3 ft] standard cable length)
Signal type/output:
Digital output SDI-12 version 1.4
Default SDI-12 address:
0
Probe diameter:
1.9 cm (0.75 in) maximum
Probe length:
12.1 cm (4.75 in) tip to end of cable gland
Extended probe length:
18.1 cm (7.125 in) tip to end of shield extender
Weight:
70 g (0.15 lb) for probe with shield extender, including
standard 1 m (3 ft) cable with M12 connector
Compliance:
View documents at:
www.campbellsci.com/tempvue20-sdi-12
1
Class A refers to ISO 60751:2008 class A standards and the corresponding ASTM E1137 Class A
standards.
2
Kelvin is the SI unit (International System of Units) for temperature, and used for uncertainty
measurements, whereas the range of the product is in Celsius and therefore both are used in
these specifications. The WMO guide to Instruments and Observations, Guide no. 8, also uses
both Kelvin and Celsius in their recommendation. Regarding resolution of the unit, 1 Kelvin = 1
°Celsius.
TempVue 20 SDI-12 PT-100 Class A, Precision Air Temperature Sensor
7
