The APD 1393 IsoSplitter accepts an RTD temperature input and provides two optically isolated and linearized DC voltage
or current outputs. The sensor type and temperature range and each independent output range can be specified as required.
This provides an economical solution when one temperature signal must be sent to two different devices.
Typical applications include validation, data logging, output device separation and redundancy (i.e. to prevent failure of
the entire loop if one device fails), or a combination of these. The temperature input is linearized, amplified, split, and then
passed through an optocoupler to the output stages. Full 4-way isolation (input, output 1, output 2, power) make this
module useful for ground loop elimination, common mode signal rejection, and noise pickup reduction.
Output Sink/Source Versatility Standard on the APD 1393 is 20 VDC loop excitation supplies for each output channel. These power supplies can be selectively wired for sinking or sourcing allowing use with any combination of powered or unpowered milliamp devices.
API exclusive features include three LoopTracker LEDs (green for input, red for each output) that vary in intensity with
changes in the process input and output signals. These provide a quick visual picture of your process loop at all
times and can greatly aid in saving time during initial startup and troubleshooting.
An API exclusive feature includes output test buttons for each channel to provide a fixed output (independent of the input)
when held depressed. A test button is provided for each output channel. The output test greatly aids in saving time during
initial startup and/or troubleshooting. The test output level for each channel is potentiometer adjustable from 0 to 100% of the output span. Terminals are provided to operate the test functions remotely for each channel. This also allows use as a remote manual override to provide a temporarily fixed output if desired.
Specify RTD type and temperature range
10 Ω to 2000 Ω RTD including
100 Ω 0.00385α
100 Ω 0.00391α,
10 Ω Cu
1000 Ω Ni-Fe
120 Ω Ni or special
Specify output range for each channel
2 independent channels
0-1 V to 0-20 V
±1 V to ±10 V
0-1 mA to 0-25 mA, 4-20 mA