Differential pressure transmitter with Modbus communication and input module
The DPT-MOD Differential Pressure Transmitter for air conforms to Modbus over serial line protocol, using RTU transmission mode and RS485 interface. The digital output signal is sent over Modbus enabling the DPT-MOD to connect directly to a field communications network.
DPT-MOD requires less wiring than traditional 3-wire transducers, since multiple devices can be connected on serial line.
The Series is comprised of the standard version (DPT-MOD) and the DPT-MOD-IN version that features an Input Module (-IN). The -IN module enables reading of multiple other signals such as temperature or control relays over Modbus.
The -IN module has two input channels designed to accept 0−10V, ntc10k, Pt1000, Ni1000/(-LG), and BIN IN (potential free contact) signals. For example, DPT-MOD with input module can read values from one differential pressure measurement point and two temperature measurement points. Hence, the DPT-MOD does the work of three transmitters.