West Controls

Loop Powered LED Indicator

This 4 digit LED loop powered field mounted display can be used to give local indication of process variables. The sensor is user configurable by means of push buttons located on the underside of the display. There is a choice of enclosures that can accommodate these displays. It also has the option of being retro fitted to an enclosure with an in-head transmitter.

Features	4-20mA input, IP65, User selectable updating resolution, Bottom or rear connections, Custom Linearisation
Display	4 digit LCD
Accuracy	±0.01% of FS
Range	-1999 to 9999, decimal point selectable
Options	IP67 option, Housing styles, Assemblies, Mounting kits, ATEX approved, Remote sensing

Loop Powered Plug-on Transmitter Display

The plug-on display is suitable for all transmitters with an output signal of 4-20mA/2 wire or 0-10V/3 wire. The display is installed between the male and female plug and is ready for work immediately. This can be freely programmed via front panel to adjust scaling, decimal point, dampening, on/off switch points, hysteresis, window mode and switching delays.

Features	Suitable for all transmitters with 4-20mA/0-10V output signals, Housing rotatable, 1 or 2 switched outputs, Integral display, Freely programmable, Special functions – access protection, min./max. value memory
Inputs	4-20mA/2 wire, 0-10V/3 wire
Display	4 digit red LED
Mounting	Plug DIN 43650, M12x1 5 pin or Binder 723 5 pin
Options	Electrical connections, ATEX approved, Limit contact, Stainless steel housing

Panel Mounted Loop Powered Indicator

This panel mounted LCD display is loop powered and is a low cost option for indication of process variables.

Features	Designed to be connected in series with a 4-20mA current loop, IP65 front panel
Display	3½ digits LCD, -200 to 1999 counts
Accuracy	±0.1% of reading, ±1 of count
Scale	Set by a combination of links, Span & Zero potentiometers
Voltage Drop	3 Volts

Smart Digital Indicators

These intelligent displays are a series of highly accurate and stable digital indicators. They are capable of accepting all commonly used temperature or process inputs. Available in three versions; temperature, process and true RMS current and voltage. The highly innovative case design enables add-on pods to be installed without the need for dismantling or recalibration. The plug and play pod options are; relay outputs, isolated retransmission and Modbus RS485 serial communications.

Features	Transmitter excitation, Mains voltage monitoring, IP65 front panel sealing
Smart Inputs	RTD, Thermocouples, mA, 0-1V, 1-5V, 0-10V
RMS Inputs	0-550V, 0-60V, 0-6A all AC or DC
Display	4 Digit LED (Red or Green), -199 to 9999 with auto rounding
Power Supply	90-253V ac (50/60 Hz) or 20-35V dc
Versions	Universal temperature, Universal process, True RMS current & voltage
Options	Dual relay alarm, Isolated re-transmission, RS485 MODBUS communications

Intelligent Digital Indicators with TMFL

These displays are very similar to the standard intelligent indicators but with added features of 6 digit LED display, temperature and process inputs and Modbus RS485 serial communications as standard. The pod options are available to add increased functionality of 4-20mA retransmission or alarms. This display also supports Transfer Function Module Library (TMFL), which gives the capability of installing custom functionality by means of standard modules available from the manufacturers’ website.

Examples of TMFL programs;

PID control	Rate of change limiter
Peak or valley hold	3 step control
Pump lift station control	Level with density compensation
Flow totaliser function	Batching function
…and more

Custom functions can also be created to suit requirements.

Features	Totaliser & Batcher functions, IP65 front panel sealing, TFML & OPC compliant
Inputs	RTD, Thermocouples, ±100mV, mA, ±10V
Display	6 Digit red LED
Power Supply	90-253V ac (50/60 Hz) or 20-35V dc
Options	Dual alarms, Isolated re-transmission, Software packages

Bar Graph Displays

These displays feature a digital indicator and bar graph for instant graphical representation of process, with the choice of single or dual displays. They are available with up to 8 channel inputs, rate and totaliser functions, and relay or analogue outputs.

Features	Rate & Totaliser functions IP65 front panel sealing
Inputs	Current, Voltage, Millivolts
Display	4 Digit LED Numeric, 101 segment LED Bar Graph
Power Supply	85-240V ac, or 18-36V dc
Versions	With or without RS485, 4 or 6 Relays
Options	Dual display, Analogue outputs

Battery Powered Panel & Field Indicators

There are several types of displays available in this range of indicators. These displays have been developed with primary functionality in mind featuring a variety of basic display, output and alarm functions. The range is suitable for panel or wall mounting.

Various models exist to accept pulse or analogue inputs, with a wide selection of features including;

Pulse/analogue retransmission	Hi/low alarm functions
Signal linearisation	Square root extraction
Batch control	RS comms
Dual signal input	Ratio control
…and more

All models are ATEX approved for intrinsic safety or explosion proof.

Models:

Flow	Indicator, Totaliser/Counter, Flowrate/Totaliser, High & low alarms, Pulse or frequency output, Linearisation, Programmable total, Batch controller, Ratio indicator, Flow computer, Differential flow computer, Start & stop inputs, Dispenser
Level	Indicator, Indicator with alarms, Indicator with linearisation & single alarm, Controller
Temperature	Indicator, Indicator with alarms, Dual indicator
Pressure	Indicator, Indicator with alarms

Signal Inputs	Pulse, Coil, (0)4-20mA, 0-10V, 0-100K Ohm, RTD PT100
Enclosures	IP67 Aluminium, IP65 Aluminium panel mount, IP65 ABS panel mount, IP65 ABS wall mount
Outputs	Passive transistor, Active transistor, 4-20mA, 0-10V
Power supply	Lithium battery with up to a maximum of 7 years battery life
Comms	RS232, RS485, TTL Intrinsically safe
Equations	Corrected gas or liquid volume
Options	Mains powered, mains with battery backup, power supply 8-24V dc or 80-240V ac, 4-20mA loop powered, electro-mechanical relay outputs (for mains powered versions only)

Digital Electronic Thermostats

This thermostat is a compact, digital electronic meter for simple temperature control (heating or cooling). The measurement input permits the connection of resistance thermometers or thermocouples, or standard current or voltage signals. The measured value is shown on a 3-digit display and the switching state of relay/s is indicated by one or two LEDs. The instrument incorporates a simple defrosting function as well as an operating hours counter, which can, for instance, be used to record the operating time of a cooling compressor. The instrument can be operated from 3/4 keys on the front panel. The electrical connection is made via screw terminals on the back of the instrument. A setup program and a PC interface are available as accessories, for simple configuration and parameterization from a PC.

Features	Customised linearisation via tabular function in the setup program, Integrated defrosting function, Adjustable switching hysteresis, Time-delayed switch-on after power-on is selectable, e. g. for staggered starting of several equipment units, Operating hours counter, Symbols for operating modes, °C, °F, hours, minutes and seconds in display, Heating or cooling is configurable, Limit monitoring, Simple, space-saving installation, Parameter level protected by code
Inputs	Thermocouple
Display	4 Digit - LED
Power Supply	220V/380V ac (50 Hz)
Versions	Panel or rail mounting, Single or Dual relay alarm