Moore offers multi-channel temperature transmitter

The Temperature Concentrator System (TCS) from Moore reduces the cost of transmitting multiple temperature sensor measurements by concentrating up to 32 signals onto a single twisted wire pair.

The system provides a precision measurement at less than 25 per cent of the cost of using comparable standalone smart temperature transmitters.

The TCS accepts any combination of RTD, T/C, mV and resistance/potentiometer signal inputs, converts the inputs to the HART digital communications protocol and transmits the data long distances from the field to the control room on an economical HART digital datalink over a twisted wire pair.

All process, status and diagnostic information can then be accessed by a HART-based control system.

The TCS uses HART - or MODBUS RTU with a converter module - for communication from the field to the control room.

One twisted wire pair replaces expensive dedicated wires.

The TCS, being a loop-powered device, eliminates the need to send power wiring out to the field as well.

Using HART, maintenance personnel can access programming and status information for each TCS channel from the control room, or from any termination point using a standard HART hand-held communicator.

There's no need to send someone to remote sites.

When used with the optional HMC HART-to- MODBUS Converter, the HMC transmits the HART data as a MODBUS RTU signal, which interfaces with any MODBUS RTU-based PC, PLC or control system.

The TCS eliminates the need to install a dedicated transmitter and twisted wire pair (or expensive sensor extension wires) for each measurement.

The TCS can be set to accept RTD (2-, 3-, 4-wire; Pt, Cu, Ni); thermocouple (J, K, E, T, R, S, N, B, C); resistance/ potentiometer (0-4,000 ohms); and millivolt (-50 to 1,000mV) inputs.

By using Moore Industries' free Intelligent PC Configuration Software, custom input linearisation can be defined for any input.

HART and MODBUS RTU Communications.

These standard communication protocols allow easy interface to a wide range of DCS, PLC and computer-based networks.

Fault Alarms.

The HMC can be programmed via the PC software to provide two relay outputs.

The relays can be set to send a master alarm when the HMC detects one, any, or all of the following fault conditions within the system: no HART signal; broken wire; hardware error; bad configuration; input saturated; and input out of table range.

The alarms can be set with a time delay, which specifies how long the alarm condition needs to exist before the alarm trips.

Failsafe and Non-Failsafe alarm action is also configurable.

TCS operating parameters can be configured from any HART-based system or, using a standard HART hand-held, from anywhere along the twisted wire pair.

The TCS can also be configured using Moore Industries' free Intelligent PC Configuration Software.

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