| Specifications | t60.2021en.fm Nitsch |
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| Specifications | t60.2021en.fm Nitsch |
| Business section |
| Specifications | t60.2021en.fm Nitsch |
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| Content | Page 1/14 JUMO GmbH & Co. KG Delivery address:Mackenrodtstraße 14 36039 Fulda, Germany Postal address:36035 Fulda, Germany Phone:+49 661 6003-0 Fax:+49 661 6003-607 E-mail:mail@jumo.net Internet:www.jumo.net JUMO Instrument Co. Ltd. JUMO House Temple Bank, Riverway Harlow - Essex CM20 2DY, UK Phone:+44 1279 63 55 33 Fax:+44 1279 63 52 62 E-mail:sales@jumo.co.uk Internet:www.jumo.co.uk JUMO Process Control, Inc. 8 Technology Boulevard Canastota, NY 13032, USA Phone:315-697-5866 1-800-554-JUMO Fax:315-697-5867 E-mail:info@jumo.us Internet:www.jumo.us Data Sheet 602021 2011-12-06/00073206 Panel-mounted Thermostats, EM Series with 1, 2, 3, or 4 single-pole snap-action switches Approvals/approval marks (see Technical data ) DGRL 97/23/EG Brief description Thermostats control and monitor thermal processes. The devices of the EM series are available as temperature controllers TR, temperature monitors TW, temperature limiters TB, safety tem- perature monitors STW (STB), and safety temperature limiters STB. In the event of a malfunc- tion, the STB switches the monitored machine to a safe operating status. Panel-mounted thermostats operate according to the fluid expansion principle – a microswitch is used as an electrical switching element. Special features y Temperature controller TR and temperature monitor TW y Safety temperature limiter STB y Tested according to DIN EN 14597 y Pressure Equipment Directive 97/23/EC Switching function Temperature controller TR and temperature monitor TW If the temperature on the temperature probe exceeds the setpoint value, the microswitch is ac- tivated by the transmission mechanics and the electrical circuit is opened or closed. If the tem- perature falls below the selected setpoint (by the amount of the switching differential), the microswitch is reset to its initial position. Restart lock for temperature limiter TB and safety temperature limiter STB If the temperature on the temperature probe exceeds the set limit value, the electrical circuit is opened and the microswitch is mechanically locked. The microswitch can be manually unlocked once the temperature has dropped by approx. 10% of the scale range (approx. 15% with a limit value setting ! 350°C). For limit values exceeding 120°C, the limit value set in the STB must be secured against incor- rect adjustment (e.g. by a seal). Self-monitoring for the safety temperature limiter STB and safety temperature monitor STW (STB) If the measuring system is destroyed (i.e. if the expansion fluid leaks), the pressure in the dia- phragm of the STB and STW (STB) drops and permanently opens the electrical circuit. Unlock- ing is then no longer possible. When the probe has cooled down to a temperature below approx. -20°C, the electrical circuit is also opened. However, it automatically closes again when the temperature rises above -10°C. Use of the safety temperature monitor STW as a safety temperature limiter STB The circuitry used with the thermostat must comply with DIN EN 14597 and VDE 0631. |
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| Following Datasheets | attachmentdownload-id_4881_filename_whitepaper_f (28 pages) attachmentdownload-id_4883_filename_b20_2756_0fr (84 pages) attachmentdownload-id_4885_filename_t20_2923de (5 pages) attachmentdownload-id_4891_filename_t95_4012hu (12 pages) attachmentdownload-id_4893_filename_t40_2055f (4 pages) attachmentdownload-id_4894_filename_PR_20018_NL_9_04 (4 pages) attachmentdownload-id_4905_filename_t20_2995en (2 pages) attachmentdownload-id_4914_filename_B70_0101_6_1f (7 pages) attachmentdownload-id_4920_filename_t20_2820fr (7 pages) attachmentdownload-id_4921_filename_b70_6021_0de (140 pages) |
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