West Controls

Smart Universal Temperature Transmitters

The small footprint of these DIN rail mounted transmitters enables high rail density. High accuracy is achieved by using an active 3 or 4 wire bridge arrangement which removes any errors associated with sensor connecting cables.

Features	3 or 4 wire, Galvanically isolated, Smart, HART, Digital 2 Channel
Inputs	PT100/500/1000/RTD, Thermocouple, Slidewire Potentiometer, Millivolts
Output	4-20mA
Temperature	Ranges from -200°C to 1760°C
Accuracy	Ranges from ±0.01% to 0.2% or ±5mA to ±10mA depending on input
Options	Different ranges, Programming kits, Alternative plugs

Process Signal Isolators

Signal isolators ensure removal of ground or earth loops, which can cause erratic signals. Available as loop or external powered. Options include current converter, booster or signal splitters.

Features	Designed to be connected in series with a 4-20mA current loop
Isolation	1000V ac RMS, 3 KV flash tested
Accuracy	0.05%, Stability 100 ppm/°C
Flammability	UL94-VO VDE 0304, Part 3 Level IIIA
Versions	Loop, I/P power, Current converter, Booster, Signal Splitter
Options	Powered isolating converter

DIN Rail Mounted Power Supply

These power supplies are small in size allowing high packing density. They provide a regulated 24V dc output from an ac supply. Due to its efficient design, cool running ensures improves reliability.

Features	Small size, Universal input supply, Cool running, High packing density, Top hat mounting
Supply range	90 to 253V ac, 50/60 Hz
Output	24V dc @ 250mA
Efficiency	70% typical @ 230V ac
O/P ripple	100mV peak

Loop Powered Trip Amplifier

Loop powered trips provide single or dual mains rated relay outputs for active high or low alarm points.

Features	Designed to be connected in series with a 4-20mA current loop, Trip state LED indication
Input	4-20mA, 2 wire
Alarm	High or low, switch selectable, Contact rating - 2A @ 250V ac or 125V dc
Isolation	3000V ac RMS
Versions	Single or Dual channel

MEDACS DIN Rail Signal Conditioners

The MEDACS DIN rail signal conditioners are smart configurable via a PC connection or front panel. The functionality is further enhanced with the Transfer Function Module Library (TFML) which enables complex transfer functions, for example; PID control, tank linearization, signal accumulators and maximum and minimum logging. Custom functions can also be generated to suit applications.

Features	Smart configurable, Easily customised, Unique ‘Bus Jumper’ wiring system
Inputs	4-20mA, PT100/Ni120, Thermocouples, Voltage, Slidewire, Frequency, Digital
Outputs	Current retransmission, Relay
Serial Comms	RS485 using MODBUS RTU protocol as standard
Versions	Single or Dual channel, Universal or Frequency input
Options	Software packages, Enclosures, Power supplies, Serial converters, Human/Machine Interfaces (HMI)

Coming soon