Section 5: Basic Digital Multimeter (DMM) Operation
Series 3700 System Switch/Multimeter User's Manual
5-66
3700S-900-01 Rev. C / July 2008
4-wire RTD connections
Shown below are 4-wire RTD connections to the Series 3700. For a 4-wire RTD
capable 40-channel switching module, paired channels are used to perform the
4-wire measurement. For example, the two input leads of the RTD are
connected to a primary channel (1 through 20), while the two sense leads are
connected to its paired channel (21 through 40). Channel 1 is paired to Channel
21, Channel 2 is paired to Channel 22, and so on.
Figure 5-39: Four-wire RTD connections
Figure 5-40: Four-wire RTD switching module connections
RTD temperature measurement configuration
The Alpha, Beta, Delta, and at 0°C parameters for the five basic RTD types
are provided in the table below.
NOTE
These parameters can be modified using remote programming for
USER type RTDs.
Type
Standard
Alpha
Beta
Delta
Ω at 0°C