LAUDA WK class. Reliable, large selection of models, compact construction

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1 LAUDA Circulation chillers with closed cooler circuit for continuous nonstop work in research, technology and production at temperatures from -0 up to 40 C Application examples Analytical devices such as electron microscopes, x-ray units, refractometers, distilling systems or AAS units Rotary evaporators and Soxhlet systems X-ray control systems e.g. at airports and semiconductor systems Control of cooling traps e.g. in the drying of gases Central cooling water supplies for complete laboratories to replace cooling with tap water Reliable, large selection of models, compact construction LAUDA circulation chillers are used where operating heat has to be discharged reliably and quickly in chemical production processes or from technical systems in harsh constant use environments. Unlike cooling with tap water, they provide a constant temperature irrespective of the time of year and pressure fluctuations. The water saving also protects the environment and significantly reduces operating costs.

2 Do you have questions about this product? Your advantages at a glance The advantages Your benefits 7 different models Cooling capacity from 0 W to kw Independent cooling-water system instead of central cooling-water supply The right solution for all requirements Cooling-water temperature and pressure always constant Avoids the leakage of substances that are hazardous to the environment LED display and -button operation Easy operation Easily visible level display and discharge pressure display from WK 00 All devices with submersible pump Important operating parameters visible at a glance No seal problems at the pump shaft Below the bench height of 79 cm on units up to WK 400 Small footprint Fits under the standard laboratory bench top Saves valuable laboratory space 7

3 LAUDA WK circulation chillers up to 600 W The circulation chillers of the are available with different cooling and pump configurations. The temperature range for all the units is from 0 up to 40 C. The LAUDA WK 00 was especially designed for simple cooling tasks down to 0 C and is ideally suited for use on the laboratory bench due to its compact size. The circulation chillers WK 500 and WK 50 differ in their cooling and pump output. The WK 50 was especially designed for connection to atomic absorption spectrometers (ASS). Unlike the WK 500, it has an appropriately upgraded cooling unit and pump. Pump characteristics Heat transfer liquid: Kryo L/min Pump characteristics Heat transfer liquid: Kryo 0 0,5 WK 50 WK 500 WK 400 WK... WK 400 W T 00...T 00 W (- pump) WK 00 WKL 0 0,0 0, L/min C Nipples screw caps Circulation chiller WK 500 Options (only WK 500/50) Digital interface RS /485, (LWZ 0) flow control instrument (LWZ 04) Recommended accessories Fiber-reinforced rubber tubing / insulation for rubber tubing / 4-port manifold Other power supply variants on page 0 Technical features WK 00 WK 500 WK 50 Working temperature range* C Temperature stability ±K Cooling output at 0 C kw Pump pressure max Pump flow max. L/min 8 0 Cat. No 0 V; 50 Hz LWM 7 LWG LWG 40 7

4 Do you have questions about this product? WK circulation chillers up to.8 kw The differences between the individual units are the effective cooling and pump outputs and the dimensions. All units can be supplied with water cooling (W). This enables greater cooling performance without heating of the surrounding laboratory environment. Pump characteristics Heat transfer liquid: Kryo C L/min WK 00, WK 00 W, WK 00, WK 00 W Nipples screw caps Water tubing only WK 00 W, WK 400 W, WK 00 W, WK 400 W Bypass closed Bypass max..5 Bypass max..5 Options Digital interface RS /485 (LWZ 0) flow control instrument (LWZ 05) high-power pump 5.5 (LWZ 0) only WK 00, WK 00 W, WK 00, WK 00 W Circulation chiller WK 00 Recommended accessories Fiber-reinforced rubber tubing /4 insulation for rubber tubing /4 4-port manifold fiber-reinforced rubber tubing / insulation for rubber tubing / Other power supply variants on page 0 Technical features WK 00 WK 00 W WK 400 WK 400 W Working temperature range* C Temperature stability ±K Cooling output at 0 C kw Pump pressure max... Pump flow max. L/min Cat. No. 0 V; 50 Hz LWG LWG 6 LWG 7 LWG 6 Technical features WK 00 WK 00 W WK 400 WK 400 W Working temperature range* C Temperature stability ±K Cooling output at 0 C kw Pump pressure max... Pump flow max. L/min Cat. No. 0 V; 50 Hz LWG 4 LWG 6 LWG 8 LWG 64 7

5 LAUDA WK circulation chillers up to kw The different cooling capacities are critical when selecting a unit. The circulation chillers from kw cooling capacity upwards are also available with water-cooling (W). In the more powerful WK 7000 to WK 0000 W circulation chillers, a second pump provides the internal circulation in addition to the pump for the external circuit. Thus the cooling capacity and temperature stability do not depend on the flow characteristics in the external circuit. These units can be supplied on request with water cooling (W). For these units, the use of water/glycol mixtures as heat transfer liquid is compulsory. The LAUDA WK circulation chillers are available with different options, e.g. RS /485 interface and enhanced pumping systems. Pump characteristics Heat transfer liquid: Kryo C L/min Nipples screw caps Water tubing only WK 00 W, WK 4600 W WK 00 to WK 0000 W Bypass closed Bypass max..5 Bypass max..5 Options High-power pump 5.5 (LWZ 0) digital interface RS /485 (LWZ 0) flow control instrument (LWZ 05) Recommended accessories Fiber-reinforced rubber tubing /4 insulation for rubber tubing /4 4-port manifold fiber-reinforced rubber tubing / insulation for rubber tubing / Circulation chiller WK 7000 Other power supply variants on page 0 Technical features WK 00 WK 00 W WK 4600 WK 4600 W Working temperature range* C Temperature stability ±K Cooling output at 0 C kw Pump pressure max..... Pump flow max. L/min Cat. No. 400 V; /N/PE; 50 Hz LWG 5 LWG 65 LWG 6 LWG 58 Technical features WK 7000 WK 7000 W WK 0000 WK 0000 W Working temperature range* C Temperature stability ±K Cooling output at 0 C kw Pump pressure max..... Pump flow max. L/min Cat. No. 400 V; /N/PE; 50 Hz LWG 45 LWG 47 LWG 49 LWG 5 74

6 Do you have questions about this product? WKL circulation chillers up to kw The WKL 0 circulation chiller was especially designed for simple thermostating tasks below 0 C. Thanks to its extremely compact construction and small footprint it fits anywhere. The temperature range of the WKL 0 is from -0 C up to 40 C with a temperature stability of ±0.5 K. The compact circulation chillers WKL 600 to WKL 000 have different pumps and cooling performance. Pump characteristics Heat transfer liquid: Kryo C L/min Nipples screw caps bath cover (WKL 0) WKL 60 WKL 90 WKL 600 WKL 900 WKL 000 Option pump 5.5 Pump characteristics WKL 0 and WK 00 p. 7 Options (WKL ) Digital interface RS /485 (LWZ 0) flow control instrument (LWZ 04) Additional accessories WKL EPDM-tube (only WKL 0) fiber-reinforced rubber tubing / insulation for rubber tubing / 4-port manifold adjustable bypass and pressure indication (WKL 60 and WKL 90) Circulation chiller WKL 0 Other power supply variants on page 0 Technical features WKL 0 WKL 600 WKL 60 Working temperature range* C Temperature stability ±K Cooling output at 0 C kw Pump pressure max Pump flow max. L/min 8 0 Cat. No. 0 V; 50 Hz LWM 06 LWG 4 LWG 4 Technical features WKL 900 WKL 90 WKL 000 Working temperature range* C Temperature stability ±K Cooling output at 0 C kw Pump pressure max Pump flow max. L/min 0 0 Cat. No. 0 V; 50 Hz LWG 59 LWG 60 LWG 7 75

7 LAUDA WKL circulation chillers up to kw The WKL circulation chillers differ in terms of their cooling capacities and achieve temperatures of -0 C (WKL 00 to WKL 4600 W) or -0 C (WKL 7000 to WKL 0000 W). All units are also available in the watercooled design (W). With these units, the use of water/glycol mixtures as the heat transfer liquid is compulsory. Pump characteristics Heat transfer liquid: Kryo 0 WKL 00, WKL 00 W, 6 WKL 00, WKL 00 W, WKL 00, WKL 00 W, WKL 4600, WKL 4600 W 5 Bypass closed 4 4 Bypass max..5 Bypass max..5 WKL 7000, WKL 7000 W, WKL 0000, WKL 0000 W 5 4 Bypas closed 6 5 Bypass max. 6 Bypass max L/min C Nipples screw caps Water tubing only WKL 00 W, WKL 00 W, WKL 00 W, WKL 4600 W, WKL 7000 W and WKL 0000 W Options Enlarged temperature range down to -5 C to WKL 4600 (W) RS /485 digital interface flow control instrument lowpressure pump (0 L/min) high-power pump 5.5 Circulation chiller WKL 7000 Other power supply variants on page 0 Technical features WKL 00 WKL 00 W WKL 00 WKL 00 W WKL 00 WKL 00 W Working temperature range* C Temperature stability ±K Cooling output at 0 C kw Pump pressure max Pump flow max. L/min Cat. No. 0 V; 50 Hz LWG 5 LWG 66 LWG 54 LWG 67 LWG 55 LWG 68 Technical features WKL 4600 WKL 4600 W WKL 7000 WKL 7000 W WKL 0000 WKL 0000 W Working temperature range* C Temperature stability ±K Cooling output at 0 C kw Pump pressure max Pump flow max. L/min Cat. No. 400 V; /N/PE; 50 Hz LWG 56 LWG 57 LWG 46 LWG 48 LWG 50 LWG 5 76

8 Do you have questions about this product? accessories Reinforced polymer tubing Special polymer tubing for high pressures Cat.-No.: Description Temp.- range C RKJ 0 Polymer tube / fiber-reinforced RKJ 0 Polymer tube /4 fiber-reinforced RKJ 0 Polymer tube fiber-reinforced Max. pressure in Manifold connectors For joining multiple external systems (for water/glycol, not suitable for silicone oil) Cat.-No.: Description Connection Male thread Temp.-range C LWZ 00 Four-port manifold G /4 4 x / LWZ 0 Four-port manifold G /4 4 x / LWZ 09 Four-port manifold G /4 4 x 0 mm LWZ 04 Four-port manifold G /4 4 x / LWZ 08 Four-port manifold M 6 x 4 x 0 mm LWZ 009 Four-port manifold M 6 x 4 x / Options ex works: WK circulation chillers up to 0 C Cat.-No.: RS /485 digital interface LWZ 0 control instrument High-power pump 5.5, 40 L/min. 50-Hz version (see pump characteristics on p. 75) Options ex works: WK circulation chillers down to -0 C LWZ 04 LWZ 05 LWZ 0- LWZ 0- Cat.-No.: WK 00 WK 500 WK 50 WK 00 WK 00 W* WK 400 WK 400 W* WK 00 WK 00 W* WK 400 WK 400 W* WK 00 WK 00 W* WK 4600 WK 4600 W* Enlarged temperature range down to -5 C LWZ 00 RS /485 digital interface LWZ 0 control instrument LWZ 04 LWZ 05 LWZ 06 Low-pressure pump, 0 L/min. 50-Hz version (see pump characteristics on p. 7 above) High-power pump 5.5, 40 L/min. 50-Hz version (see pump characteristics on p. 75) * W = water-cooled version LWZ 04- LWZ 0- LWZ 0- WKL 0 WKL 600 WKL 60 WKL 900 WKL 90 WKL 000 WKL 00 WKL 00 W* WKL 00 WKL 00 W* WKL 00 WKL 00 W* WKL 4600 WKL 4600 W* WKL 7000 WK 7000 WK 7000 W* WK 0000 WK 0000 W* WKL 7000 W* WKL 0000 WKL 0000 W* Order the detailed LAUDA accessories brochure and the heat transfer liquids brochure free of charge. This and additional product information can also be found at 77