The Thermolog MK2 Series Electronic Temperature Evaluation Unit is engineered and manufactured by Bühler Technologies GmbH – a premier German technology company globally recognized for advanced fluid control solutions and industrial automation systems. The Thermolog MK2 functions as an intelligent processing hub, digital display indicator, and signal evaluation controller, converting raw signals from industrial temperature sensors (such as PT100 resistance temperature detectors) into clear visual readouts and actionable logic switching signals across the entire system.

In hydraulic power pack management, industrial lubrication systems, and fluid storage reservoirs, controlling fluid temperature is vital for protecting mechanical integrity and maximizing component lifespan. Excessively high temperatures rapidly reduce oil viscosity, accelerate chemical aging, degrade rubber seals, and create potential hazard risks. Conversely, excessively low fluid temperatures increase viscosity, induce severe pressure drops, and hinder cold-start pump operation. The Bühler Thermolog MK2 temperature evaluation unit effectively resolves these operational challenges through advanced microprocessor control, enabling customizable automatic switching thresholds to actuate heat exchanger coolers or electrical heaters.

Key technical highlights of the Bühler Technologies Thermolog MK2:
- High-Contrast Digital LED Display: Equipped with an industrial-grade digital display showing real-time fluid temperatures (°C / °F), peak value memory (Min/Max values), and status indicators for active alarm relays, allowing technicians to comfortably monitor parameters from a distance.
- Intuitive & Flexible Programming Interface: Features a front-panel keypad for effortless configuration of switching setpoints, hysteresis windows, activation delay times, and analog output scaling without requiring external software or programming tools.
- Versatile Signal Outputs & Relay Contacts: Offers configurable potential-free relay contacts (2 to 4 switching points) for Min/Max thermal alarms, alongside a galvanically isolated continuous Analog output (0/4-20 mA / 0-10 V) for data transmission to central PLC/SCADA control networks.
- Broad Compatibility & Precision Performance: Connects directly with standard 2-wire, 3-wire, or 4-wire PT100 RTD sensors, delivering high-resolution signal processing with minimal error margins for uncompromised stability in electrically noisy plant environments.
- Standardized Panel & DIN Rail Mount Enclosure: Designed for standard panel-mount or DIN rail mounting configurations, featuring an IP65-rated front panel that effectively resists dust ingress and moisture splash.

The Bühler Thermolog MK2 Temperature Evaluation Unit is an essential control component for hydraulic power packs in plastic injection molding machinery, steel rolling mills, CNC machine tools, cement plants, thermal power stations, chemical complexes, refineries, and automated lubrication systems.

• Manufacturer: Bühler Technologies GmbH
• Product Family / Model: Thermolog MK2 (MK2 Series)
• Device Type: Electronic Temperature Evaluation Unit / Digital Temperature Monitor
• Country of Origin: Germany
• Input Signal Compatibility: PT100 Resistance Temperature Detectors (2-wire / 3-wire / 4-wire) per DIN EN 60751
• Temperature Measuring & Evaluation Range: -40°C to +200°C (Sensor probe dependent)
• Display Readout: 4-digit digital LED display, showing live temperature values and programming menus
• Measurement Accuracy: ± 0.2% of Full Scale ± 1 digit
• Relay Switching Outputs: 2, 3, or 4 potential-free relay contacts (SPDT / NO / NC)
• Relay Contact Rating: Max. 250V AC, 3A / 30V DC, 3A
• Analog Output Signal: 0/4 - 20 mA (Max load 500 Ohm) or 0 - 10 V DC (Galvanically isolated)
• Programmable Features: Independent setpoint adjustment, Hysteresis, Delay time (0 - 100s), Min/Max peak value memory
• Power Supply Voltage: 24 V DC (± 10%) or 100 - 240 V AC 50/60 Hz
• Power Consumption: < 5 VA / 3 W
• Operating Ambient Temperature: -20°C to +60°C
• Storage Temperature: -30°C to +80°C
• Mounting Format: Panel Mount (48x48 mm / 96x48 mm) or DIN Rail Mount
• Electrical Connections: Pluggable screw terminal blocks
• Enclosure Protection Rating: IP65 front panel / IP20 rear enclosure
• Net Weight: Compact approx. 0.25 kg to 0.45 kg