MCK-301-61 controller for HVAC and room temperature devices is designed for:

• indoor temperature monitoring;
• climate devices control according to measurement data;
• alarm signaling with a corresponding indication about user- specified maximum indoor temperature exceeding;
• change of status between main and stand-by air conditioners after user-set time delay has expired;
• switching to an operational air conditioner and signaling about a fault when one of the air conditioners is faulty;
• all temperature devices are switched off when there is a fire alarm signal;
• the average indoor temperature indication;
• indication of the climate device that is in operation at the moment.

The controller provides the modes of operation as follows:

— connected electric heater thermostat conditions;

— air conditioning zone control thermostat conditions;

— alarm conditions;

— testing conditions.

ТR-100М is microprocessor based device intended to measure and control temperature mode of dry-type transformer with four transducers connected by two or three wire circuit, with subsequently displaying the temperature on the display and sending alarms when any parameters are outside preset limits.

The product can also be used for protection of HV motors and generators.

The product has universal power supply of 24 to 265 V (AC or DC) and connection to network EIA/TIA-485 with MODBUS RTU / ASCII protocol.

The product can be applied with the following types of temperature transducers:

– PT100 – platinum transducer with rated resistance of 100 Ohm, at 0°С;

– PT1000 – platinum transducer with rated resistance of 1000 Ohm, at 0°С;

– PTС1000 (EKS111) – transducer with rated resistance of 990 Ohm, at 25°С;

– PTC (minika) – cold resistance of transducer of 20-250 Ohm.

The structure of ТR-100М is made in plastic housing designed for mounting on the front panel of the board (cabinet) or of the device; dimensions of the housing is 96 x 96 x 110 mm. The housing is made of shockproof, self-extinguishing material.

The product has four channels for temperature measurement, and four output load relays. Each load relay is designated for a particular control parameter (like On/Off cooling systems, Alarm, Tripping, Sensor fault).

The temperature transducers (sensors) of the first three channels measure the temperature of each transformer winding; and the fourth one measures temperature of the transformer yoke or ambient temperature.

In case of dangerous temperature rise of the transformer, the product first will enable alarm system and the cooling fans. If the temperature rise continues and the temperature exceeds the limit value, the product will perform emergency shutdown of the transformer.

In case of temperature sensor fault, TR-100M enables the alarm of the transducer fault.

TR-101 digital temperature controller is used to measure and control device temperature via four independent sensors connected in a two or three-wire circuit, with subsequent indication of the temperature on the display. The device can be used in different industrial, utility and agricultural applications.

The device has the following functions:

• Measuring the temperature on four independent channels using standard sensors
• Regulating the temperature using the proportionate-integral-differential (PID) principle with an output key unit (relay)
• Two-level temperature regulation
• Displaying the currently measured temperature value on the integrated LED digital indicator (scanning)
• Transmitting the measured temperature values of the controlled sensors to a computer via built-in RS-485 Modbus RTU protocol
• Discovering line breakdown or faults in connected sensors
• Digital filtering and correcting of the temperature being measured
• Programming via the front panel buttons or a PC (free PC software)
• Saving the settings in case of power outage
• Protecting the settings against unauthorized changes (password protected)
• TR-101 can use any voltage between 24 and 260V AC, regardless of the polarity