The Tracker 220 series of digital panel meters can be connected to most process sensors, including thermocouples, RTDs, volts, 4-20mA signal. All temperature ranges have built in linearisation curves and cold junction compensation. Process inputs can be scaled to display any engineering unit. Sensor excitation is available to power transmitters.
Four software alarms may be used with the 2 relays included on the Tracker 222 and 224. The Tracker 223 and 224 are fitted with isolated analog outputs that can be configured as 0-10V, 0-20mA or 4-20mA, and even have a damping filter for fast changing or noisy signals. An RS422/485 serial interface is fitted to all these panel meters, that allows communications with SCADA software such as DAQFactory, using Modbus RTU or ASCII protocols.