Laboratory thermostat Universa U 4230 M

digitalelectronicheating

Overview
The LAUDA Universa U 4230 M is a bath circulation thermostat for precise tempering of liquids in laboratory and industrial processes. The device is supplied with a bath cover and pump connections as standard. A front-mounted drain valve behind the ventilation grid facilitates safe and convenient replacement of the temperature control fluid.

Key features

• Bath circulation thermostat with advanced electronics for high control accuracy
• Dedicated Tmax button for straightforward access to overtemperature protection during commissioning
• High-efficiency refrigeration: speed-controlled inverter compressor, electronic expansion valves and speed-controlled fans for improved energy efficiency and quieter operation
• Extensive control functions: programmer, safe mode, calibration options, controller self-adaptation and weekly planner for flexible process control
• Integrated wireless communication (WLAN) and standard Ethernet/USB interfaces; optional interface modules and external Pt100 input
• Modular design: interchangeable control head and heating/cooling base for future upgrades
• Varioflex pump with eight selectable performance levels and adjustable flow distribution for internal/external circulation
• Use of natural refrigerants
• Remote operation and monitoring: integrated web server, LAUDA Command app, PKI and 2‑factor authentication; connection to LAUDA.LIVE for cloud-based data analysis and remote maintenance
• Comprehensive safety features:
  • Over- and under-level protection
  • Adjustable overtemperature protection with acoustic alarm
  • Automatic system diagnostics at start-up with alarm and error display
  • Smart management of tempering media with automatic limit adjustment
• 5" colour TFT display with temperature graph and clear menu navigation; front switch for pump adjustment during operation
• Adaptive bath edge ventilation (patent pending) to prevent icing and condensation
• Integrated Wi‑Fi: import and use limited to certified countries/regions

Working range

• Min. working temperature: -30 °C
• Max. working temperature: 200 °C
• Temperature stability: 0.01 ± K

Technical data

• Working temperature range: -30 ... 200 °C
• Ambient temperature range: 5 ... 40 °C
• Max. power consumption: 3.8 kW
• Current consumption: 16 A
• Bath opening (WxD): 300 x 350 mm
• Bath volume min. / max.: 19.0 / 47.0 L
• Max. discharge pressure: 1.1 bar
• Max. pump flow: 32 L/min
• In/Outlet connection thread (outside): M16 x 1 (Ø olives 13 mm)
• Dimensions (WxDxH): 450 x 690 x 927 mm
• Weight: 69 kg
• Power supply: 200-240 V, 50/60 Hz; power cord with angled plug (CEE7/7)
• Part number: L003758

Cooling capacity (selection)
200 °C | Pump level 8 | Thermal oil | 0.8 kW (50/60 Hz)
100 °C | Pump level 8 | Thermal oil | 0.8 kW (50/60 Hz)
20 °C | Pump level 8 | Ethanol | 0.8 kW (50/60 Hz)
10 °C | Pump level 8 | Ethanol | 0.74 kW (50/60 Hz)
0 °C | Pump level 8 | Ethanol | 0.7 kW (50/60 Hz)
-10 °C | Pump level 8 | Ethanol | 0.59 kW (50/60 Hz)
-20 °C | Pump level 4 | Ethanol | 0.43 kW (50/60 Hz)
-30 °C | Pump level 4 | Ethanol | 0.18 kW (50/60 Hz)

Accessories

• Bath cover (Universa)
• Universa standard rails, Universa jet pipe and device-specific accessories (see LAUDA accessory finder)