The SNAP-AIR400K-8 module has eight channels of analog to digital conversion that convert resistance to temperature or to ohms. The module is ideal for NTC thermisters commonly used in HVAC, refrigeration, and process control applications. It may also be used with PTC thermisters in resistance sensing applications.
The SNAP-AIR400K-8 reads variable resistance type transducers, and it has 12 resistance input ranges from 500 Ohms to 400 K Ohms, plus Autorange. Range dependent resolution is from 20 milliohms to 16 Ohms. SNAP PAC brains and PAC Control provide direct temperature readings for four popular thermistors using the Steinhart-Hart equation. You may also enter custom coefficients for unsupported thermistor curves.
Part of the SNAP PAC System, the module mounts on a SNAP PAC rack with a SNAP PAC brain or rack-mounted controller. Analog, digital, and serial I/O modules can all be on the same rack. Such an I/O unit is also well suited for PC-based control or for use as intelligent remote I/O for an Allen-Bradley RSLogix PLC system, such as ControlLogix, MicroLogix, or CompactLogix.
Compatibility: This module can be used with SNAP PAC brains and R-series controllers. Minimum requirements: brain or controller firmware R9.3c and PAC Project R9.3002 (PAC Control R9.3b).
Also see the 4-channel SNAP-AIR40K-4.
Build your system in the SNAP I/O Configurator.
