Sutron 8310 - Page 70

Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 70
Interval, Time
Define when the measurement task runs. (See details under Instantaneous)
TempUnits
Specify if the AirTemperature and DewPoint are to be expressed in Fahrenheit or
Celsius.
Input Type (AT)
Specifies the input type and associated fields for making the temperature measurement.
Input Type (RH)
Specifies the input type and associated fields for making the humidity measurement.
DiffResistance (Differential Resistance)
This measurement type is used to measure Differential Resistance sensors, such as those made
by Carlson Concrete Instruments for Dam Safety and concrete structure monitoring applications,
where stresses and strains on the structure are monitored and recorded, and is typically used in
combination with the Differential Resistance input type.
This measurement takes two inputs, Rt and Z, and produces four outputs, Out, t, Rt, and Z.
“Out” is typically a computed stress/strain or displacement, “t” is temperature, and Rt and Z are
reflections of the inputs.
This measurement has the following properties:
Interval, Time
Define when the measurement task runs. (See details under Instantaneous)
K, R0, f, b
These values come directly off the sensor’s cal sheet. When measuring temperature
only, set f and b to 0.0.
Z0, t0
Determined at the time of installation. When measuring temperature only, set f and b to
0.0.
Input Type (Rt)
Specifies the input type to use for the Rt parameter of the temperature calculation used
to produce this measurements temperature (t) output: t = K * (Rt – R0). This input type
is typically set to DiffResistance, with its corresponding DiffResParam property set to
“R1+R2”.
Note: when using the DiffResistance input type for both Rt and Z, set the Module,
Channel, Mux, and MuxChannel properties the same for both inputs.
Input Type (Z)
Specifies the input type to use to for the Z parameter of the calculation used to produce
this measurements Out value: Out = f * (Z – Z0) + b * (t – t0). This input type is typically
set to DiffResistance, with its corresponding DiffResParam property set to “R1/R2”.
Note: when using the DiffResistance input type for both Rt and Z, set the Module,
Channel, Mux, and MuxChannel properties the same for both inputs.