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LAUDA Additional Devices

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Immersion coolers

Immersion Cooler

LAUDA through-flow coolers and immersion coolers are used as add-on devices to cool heating thermostats or any type of bath below ambient temperature. The preferred use of through-flow coolers is the use in conjunction with heating thermostats and integration into the cooling circuit.

LAUDA immersion coolers provide a quick way to extend the temperature range downwards when used in conjunction with heating thermostats, water baths and cooling traps. The thermostats work on the classical principle of direct evaporation, and the flexible hose connection means that they can be used without any problems. The ETK 50 even has adjustable temperature control.

  • Compact space-saving construction
  • Carrying handles for easy transport
  • Cooling coil made from high-grade stainless steel
  • Flexible tube connection with special insulation (length 1.5 m)
  • Temperature range -50...20 °C


LAUDA Additional Devices brochureDownload a PDF
of our Additional Devices brochure:

LAUDA Additional Devices Brochure (1 MB)

 
Technical features ETK 30 ETK 50
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Working temperature range (without external heating) °C -30...20 -50...20
Operating temperature range (with external heating) °C -30...100 -50...100
Temperature probe Pt 100
Control action 2-point action
Temperature stability (at -10 °C) ±K 0.5
Cooling output at 20 °C kW 0.15 0.25
  -10 °C kW 0.13 0.25
  -30 °C kW 0.04 0.20
  -40 °C kW 0.01 0.10
  -50 °C kW 0.04
Cooling unit air-cooled fully hermetic air-cooled fully hermetic
Cooling coil (Ø x L) mm 42x124 52x166
Base area (W x D x H) mm 250x360x285 460x410x270
Weight kg 17 33
Power consumption kW 0.2 0.3
Cat. No. 230 V; 50/60 Hz L001958 on request
 

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Through-flow coolers

Through-Flow Cooler

LAUDA through-flow coolers upgrade any type of heating thermostat with pump connections to a high-quality cooling thermostat and thus allow working below ambient temperature. Through-flow coolers replace cooling with tap water that is expensive and ecologically not recommandable. They provide a constant flow and temperature of cooling supply regardless of the variations. Therefore, it is possible to ensure optimum temperature stability over the entire period and allow reproducible temperature conditions at any time.

  • Air-cooled, fully hermetic and thus absolutely maintenance-free cooling aggregates with heat exchangers in reasonable dimensions.
  • Heat exchangers are made from stainless steel.
  • All refrigerated parts inside the through-flow cooler are perfectly insulated. Therefore no condensation of water or risk of corrosion.
  • Low-noise emissions
  • Temperature range -40...150 °C


LAUDA Additional Devices brochureDownload a PDF
of our Additional Devices brochure:

LAUDA Additional Devices Brochure (1 MB)

 
Technical features DLK 10 DLK 25 DLK 45 DLK 45 LiBus
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Working temperature range °C -15...150 -30...150 -40...150 -40…150
Cooling output at 20 °C kW 0.25 0.33 1.1 1.1
  0 °C kW 0.20 0.28 0.95 0.95
  -10 °C kW 0.10 0.25 0.85 0.85
  -20 °C kW 0.22 0.75 0.75
  -30 °C kW 0.20 0.55 0.55
  -40 °C kW 0.30 0.30
Heat exchanger connections
for heat carrier
M 16x1,
nipples Ø 13 mm
M 16x1,
nipples Ø 13 mm
M 16x1,
nipples Ø 13 mm
M 16x1,
nipples Ø 13 mm
Special features Control connection for mains supply Proportional cooling:
Ultras
Proportional cooling:
Proline
Overall dimensions (W x D x H) mm 200x400x320 290x540x330 470x560x430 470x560x430
Weight kg 17 33 63 63
Power consumption kW 0.2 0.5 0.9 0.9
Cat. No. 115 V; 60 Hz L001975 L001976
Cat. No. 208-220 V; 60 Hz LFD 809 LFD 811
 

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Circulation heat exchangers

LAUDA UWT circulation heat exchangers are an economical alternative to circulation chillers when central facility cooling circuits can be used. This is economically and ecologically practical if heat removal from processes has to be performed either regularly or at a high power, and the removed heat should not enter the ambient environment. Regulated circulation heat exchangers – also known as system separators – guarantee temperatures, pressures and volume flow rates adapt to the application. The LAUDA UWT take cooling water from an existing primary circulation system and thermostat an internal bath volume in an individually-adjustable manner: this bath volume is then transported to the application via a pump in the laboratory circulation system.

  • High pump capacity for good heat exchange
  • High temperature stability even when there are temperature fluctuations in the primary circuit
  • Compact design for easy installation
  • High degree of process safety thanks to adapted cooling capacity
  • Free of refrigerants
  • Temperature range 8...25 °C


LAUDA Additional Devices brochureDownload a PDF
of our Additional Devices brochure:

LAUDA Additional Devices Brochure (1 MB)

Schematic circuit diagram of LAUDA circulation heat exchangers

Circulation Heat exchanger diagram

A: Application
B: UWT
C: Facility cooling supply
a: Inlet of coolant
b: Return flow of coolant
c: Flow pipe for application
d: Return pipe for application
1: Heat exchanger
2: Bath vessel with heat tranfer liquid
3: Immersion pump for circulation
4: Pressure indication for UWT 6000 and UWT 10000

 
Technical features UWT 3000 UWT 6000 UWT 10000
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Working temperature range °C 8…25 8…25 8…25
Resolution of setting °C 0.1 0.1 0.1
Resolution of indication °C 0.1 0.1 0.1
Temperature stability ±K 1 1 1
Cooling capacity kW 3 6 10
at coolant inlet temperature °C 9 9 9
at coolant pressure loss bar 0.12 0.05 0.07
at cooling circuit volume flow L/min 6 16 20
at laboratory circuit inlet temperature °C 14 14 14
at output UWT L/min 6 6 20
Pump pressure max. bar 1.0 1.0 2.2*
Flow max. L/min 30 30 33
Cooling and lab circuit connections G 3/4 G 1 1/4 G 1 1/4
Filling volume L 7...12 35...45 35...45
Overall dimensions (W x D x H) mm 350x480x410 550x650x480 550x650x480
Weight kg 34 68 74
Power consumption kW 0.2 0.2 0.5
Cat. No on request on request on request
 

Summary

Summary

Summary

*Also available with more powerful pump with 5.5 bar (LSW 1202); 40 L/min