Sutron 8310 - Page 168

Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 168
Fuel Temperature Probe
A “fuel temperature” sensor is used to monitor the temperature of surrounding trees by
measuring the temperature inside a standard wooden dowel. The Campbell Scientific CS205/107
Fuel Temperature probe is the example shown here. It utilizes Campbell Scientific’s model 107
temperature probe which uses a thermistor with a slightly different setup than normal
thermistors. It has two internal resistors plus the thermistor. Since it already has a reference
resistor inside the probe, there is no need for an extra reference resistor shown with other
thermistors setups.
Wiring
A schematic of the 107 Temperature Probe and the necessary connections are shown below.
Measurement Setup
Field
Value
InputType
Bridge
Module
1
Channel
Analog Input port number
where Analog Voltage is wired
Differential
No
FullScale
78mV
SettlingTime
100
FilterNotch
60
Has Vexcite+ Sense
No
Sensor
Wires
Function
Connection
Black
Excitation
voltage
Vref
Red
Analog
Voltage
Analog
Input (any)
Purple
Analog
Ground
AGND
Clear
Earth
Ground
Earth
Ground