Tree Tech Model TM2 The Temperature Monitor TM2 is the latest generation of the widely applied temperature monitor MT2. The micro-controller based TM2 is part of a modular system that cooperates with the Tree Tech TM1 Temperature Controller to measure temperatures of up to two (2) additional transformer windings. When used together, the TM1 and TM2 support the capability to measure the temperatures of the oil, primary, secondary and tertiary winding of a transformer. The TM2 has great user flexibility. Each module can be parameterized to the specification of individual users. The TM1 and TM2 are linked via RS-485 serial communication, the units are fully compatible in connections and dimensions as there predecessors MT1 and MT2 as well as a supervision module MS. This enables the two generations of equipment to be interchangeable.

View TM2 Datasheet

Key Features

• Two true RMS universal AC inputs from 0-10A, accuracy of 0.5% of scale, used to measure the load and calculate the winding temperature through the thermal imaging process.

• Two high-bright LED displays to facilitate the visualization of oil and winding temperatures.

• Calculation of the final gradient forecast for oil-winding temperature at the current load

• Two current outputs for remote indications of temperatures with an output band selection of (0-1mA,0-5mA, 0-10mA, 0-20mA and 4-20mA)

• Two N.O. contacts (N.C. or combinations under request) for temperature alarms

• Two N.O. contacts (N.C. or combinations under request) for oil and winding temperature trips, with double security provision (simultaneous
  sequence of 2 micro-controllers for operation). Adjustable temperature setting from 0-20 minutes with countdown display

• Two N.C. contacts for the startup of forced cooling groups, with time delay between the startup of each group (even with power outage of
  TM-2) and forced operation through the self-diagnostic routines in case of module failure or voltage outage.

• One N.C. contact for power outage or internal failure detected during the self-diagnostics

• Self-Diagnostic: 2 micro-controllers (reciprocal supervision), detection of temperature and current measuring failure, relay activation, etc.

• Total absence of mechanical parts and self-calibration through the TM-2 firmware.