At its heart is the 16-channel, loop-powered (2-wire) TCM Temperature Concentrator Module. When two TCM modules are used in a TCS, up to 32 signals can be monitored over one twisted wire pair. The TCM is approved for use in hazardous areas (Div 2/Zone 2 and Div 1/Zone 0/1) and can be used with an HMC (HART to MODBUS RTU Converter) when communication with a MODBUS RTU master is required.

Using the TCS provides a precision measurement at less than 25 percent of the cost of a comparable standalone smart temperature transmitter. Hardware, wiring and installation costs are reduced because the TCS eliminates the need to install a dedicated transmitter and twisted-wire pair for each measurement. The compact design of the TCS also means a significant savings in real estate needs to measure temperatures.

These cost savings are just a few of the benefits of the TCS solution. Other key features include:

Universal Input Options

The TCM can be set to accept RTD (2-wire, 3-wire, 4-wire, PT, Cu or Ni), thermocouple (Types J, K, E, T, R, S, N, B or C), resistance/potentiometer (0 to 4000 ohms) and millivolt (-50 to 1,000mV) inputs. Custom input linearization can be defined for any input.

Deployment of HART and MODBUS RTU Communications

The HMC allows for communications with a MODBUS RTU-based host system. The ability to use either the standard HART or MODBUS communications protocols allow easy interface to a wide range of DCS, PLC and computer-based networks.

Generating Alarms

If the HMC is utilized it can be programmed to provide two alarm relay outputs. The relays can 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
• Input out of table range

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

Versatile Programming

The TCM’s operating parameters can be configured from any HART-based system or, using a standard HART handheld, from anywhere along the twisted wire pair. The TCM can also be configured using our Intelligent PC Configuration software.

Find out more information about the TCS or contact us at [email protected] or +1 800-999-2900 in US and Canada (+1 818-894-7111)

Moore Industries