A Complete Range of Universal Input Digital Panel Indicators for Temperature and Process Measurement

Universal Input
Any one of over 20 different input types can be directly connected. Thermocouple, RTD, 20mA, mV and 10 volt signals are accepted as standard.

Universal Power Input
Wide-ranging 90 to 265vAC input allows world wide installation. Low voltage AC/DC input option available.

Tough but Attractive
Designed to enhance the looks of any instrument panel, the enclosure uses flame retardant (VO) materials and the front panel conforms to IP65 (NEMA 4). The plug in sleeve type construction facilitates simple exchange for routine servicing/calibration.

Connectivity
Digital Status inputs, serial communications, analogue output, transmitter supply, alarm relays, transducer supply, are all available. The instrument can be removed for routine servicing without disturbing these connections.

Clear Display
The flat, slightly recessed display, together with high brightness red or green LEDs ensure maximum visibility even in difficult ambient lighting conditions.

Front Panel Control
Full set-up is available using the front panel buttons to step through a simple password protected menu. Some functions can be made directly available to an operator. Alternatively, units can be supplied without buttons.

User-Definable Buttons
Two of the front panel buttons can be user programmed to provide one or more special functions such as tare and auto zero.  

Applications

Temperature
The Tracker 220 series can be used in a wide variety of temperature measurement applications with results displayed in °C, °F or Kelvin (Absolute). In applications where non-linearising temperature transmitters are used, the Tracker 220 series can linearise the 4-20 mA signal received to the thermocouple curve. Where accuracy is vital to an application, a 220 series indicator can be calibration-matched to the output of the actual sensor to be used, thus removing most system measurement errors.

Signal Re-Transmission
The user-programmable isolated analogue output allows the 220 series to be used in applications where a local display as well as data recording is required. This output can be configured to transmit the measured, averaged, maximum or minimum value and has its own damping filter for noisy or fast moving signals. The input can be locally conditioned and re-transmitted over a relatively long distance. Being electrically isolated, problems associated with earth loops, which are often encountered in measurement systems, are eliminated.

Pressure and Weighing
A variety of pressure transducers, pressure transmitters or strain gauge bridges can be connected to the Tracker 220 series. The indicator and sensor can be matched using the user calibration feature, greatly reducing errors due to sensor output and excitation supply voltage variations. A front panel button, or digital status input, can be configured to provide an auto zero feature allowing zero offset errors to be eliminated. For weighing applications, a tare function can be similarly configured.

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