NP-D90-A-A-D-24
NP: NewPWR brand
D: Single-channel
90: Universal signal isolator
A: Current input (e.g., 4-20mA)
A: Current output (e.g., 4-20mA)
D: With LCD display
24: DC 24V power supply
Description: A one-in-one-out current isolator. Isolates and transmits one 4-20mA input signal to one 4-20mA output signal, with display. This is the most basic model.
NP-D91-A-A-D-24
Differs from Model 1 only in the function code 91.
Description: A current isolator with power distribution. In addition to the functions of Model 1, it provides +24V power to two-wire transmitters connected to the input.
NP-D90-R-A-D-24
R: RTD input
A: Current output
Description: An RTD isolation transmitter. Converts RTD signals (e.g., Pt100) into an isolated 4-20mA current output, with display.
NP-D90-T-A-D-24
T: Thermocouple input
Description: A thermocouple isolation transmitter. Converts thermocouple signals (e.g., type K) into an isolated 4-20mA current output, with display.
NP-S92-A-A-D-24
S: Dual-channel
92: One input, two outputs
Description: A one-in-two-out current isolation distributor. Isolates one 4-20mA input signal and distributes it into two independent 4-20mA output signals, with display.