Laboratory thermostat Universa U 845 M

modulardigitalelectronic

Product overview
The Universa U 845 M is a bath circulation thermostat for industrial temperature control tasks. It is supplied with a bath lid, pump connections and a front drainage valve for safe and convenient replacement of the tempering fluid.

Key features

• Bath circulation thermostat with advanced electronics for high control precision (stability 0.01 ± K)
• Dedicated Tmax button for easy access to overtemperature protection during commissioning
• Front control-head switch for adjusting pump output during operation
• Extensive functions: programmer, safe mode, calibration options, controller self-adaptation and weekly scheduler
• Comprehensive connectivity: standard Ethernet, USB, Pt100 interface and up to eleven optional interface modules
• Modular design with interchangeable control head and heating/cooling base
• LAUDA Varioflex pressure-suction pump with eight selectable performance levels and adjustable flow distribution for internal/external circulation
• Efficient refrigeration: speed-controlled inverter compressor, electronic expansion valve and speed-controlled fans
• Integrated WLAN and web server for remote control (LAUDA Command app / browser) and LAUDA.LIVE cloud connectivity
• Comprehensive safety functions: over/under-level protection, adjustable overtemperature alarm, automatic start-up diagnostics
• 5" colour TFT display with values and progression graph, menu navigation in six languages
• Optional ball-bearing pump for highly viscous or contaminated fluids
• Adaptive bath-edge ventilation (patent pending) to avoid icing/condensation and protect electronics
• Note: Wi‑Fi usage limited to manufacturer-certified countries/regions

Working range

• Min. working temperature: -45 °C
• Max. working temperature: 200 °C
• Temperature stability: 0.01 ± K

Cooling capacity (selected values)
Temperature | Pump level | Tempering medium | Cooling capacity 50 Hz | Cooling capacity 60 Hz
200 °C | 8 | Thermal oil | 0.8 kW | 0.8 kW
100 °C | 8 | Thermal oil | 0.8 kW | 0.8 kW
20 °C | 8 | Ethanol | 0.8 kW | 0.8 kW
10 °C | 8 | Ethanol | 0.73 kW | 0.73 kW
0 °C | 8 | Ethanol | 0.7 kW | 0.7 kW
-10 °C | 8 | Ethanol | 0.59 kW | 0.59 kW
-20 °C | 4 | Ethanol | 0.44 kW | 0.44 kW
-30 °C | 4 | Ethanol | 0.26 kW | 0.26 kW
-40 °C | 4 | Ethanol | 0.12 kW | 0.12 kW
-45 °C | 4 | Ethanol | 0.05 kW | 0.05 kW


Technical specifications

• Model / order no.: L003762 (variant: 200-240 V, 50/60 Hz)
• Working temperature range: -45 … 200 °C
• Ambient temperature range: 5 … 40 °C
• Temperature stability: 0.01 ± K
• Max. power consumption: 3.8 kW • Current: 16 A
• Bath opening (W x D): 150 x 150 mm • Bath volume min./max.: 5.0 / 8.0 L
• Max. discharge pressure: 0.7 bar • Max. pump suction: 0.4 bar • Max. pump flow: 25 L/min
• Connections (outside thread): M16 x 1 • Connection Ø olives: 13 mm
• Dimensions (W x D x H): 310 x 490 x 757 mm • Weight: 45 kg
• Power supply: 200-240 V, 50/60 Hz • Power plug example: angled CEE7/7 (Schuko)