National Instruments 1142 用户手册

Table 5-3.  NI-DAQmx RTD Measurement Properties

AI.RTD.Type

Specifies the type of RTD 
connected to the channel.

AI.RTD.R0

Specifies the resistance in ohms of 
the sensor at 0 

°C.

AI.RTD.A
AI.RTD.B
AI.RTD.C

Specifies the A, B, or C constant of 
the Callendar-Van Dusen equation 
when using a custom RTD type.

AI.Resistance.Cfg

Specifies the resistance 
configuration for the channel, such 
as 2-wire, 3-wire, or 4-wire.

Table 5-4.  NI-DAQmx Thermistor Measurement Properties

AI.Thrmistr.R1

Specifies the resistance in ohms of 
the sensor at 0 

°C.

AI.Thrmistr.A
AI.Thrmistr.B
AI.Thrmistr.C

Specifies the A, B, or C constant 
of the Steinhart-Hart thermistor 
equation, which NI-DAQmx uses to 
scale thermistors.

Table 5-5.  NI-DAQmx Current Measurement Properties

AI.CurrentShunt.Loc

Specifies whether the 
shunt resistance location is 
internal or external.

AI.CurrentShunt.Resistance

Specifies the resistance, in 
ohms, of the external shunt 
resistance.