Jumo 601530 Rod Thermostat Data Sheet User Manual

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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
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
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
Internet: www.jumo.us
Page 1/6
Rod Thermostat with Microswitch
STMA series
Special features
•With microswitch
Aluminum diecast case
Protection class IP 54
High excess-temperature protection
High response sensitivity
Brief description
Rod thermostats with microswitches operate according to the rod-length expansion principle.
During this process, the change of the sensing-probe length (which depends on the tempera-
ture) is transmitted via an internal rod (that has a smaller expansion coefficient and that is fitted
in the thermowell) to a transmission unit equipped with a microswitch in the switching head.
The thermostats of the STMA series are used, for example, in the heating and air conditioning
industries.
Rod thermostats distinguish themselves by their high excess-temperature protection that func-
tions independently of the control range (maximum. +345 °C), high response sensitivity (time
constant 8 s), and negligible low-ambient temperature influence at the switching head.
When the sensing probe is damaged or bent, the thermostat changes to "Safe status“ (heater
off).
STMA-1
STMA-2
STMA types
STMA type -1 -2 -7
Switching function Temperature controller TR Temperature monitor TW Temperature limiter TB
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.
Temperature limiter TB
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 un-
locked once the temperature has dropped by approx. 10 % of the scale range.
Temperature limiter TB with extra code 574
The additional N/O contact can be used as a signal contact.
Data Sheet 601530
2011-11-07/00073201
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Summary of Contents

Page 1 - STMA series

JUMO GmbH & Co. KGDelivery address: Mackenrodtstraße 1436039 Fulda, GermanyPostal address:36035 Fulda, GermanyPhone: +49 661 6003-0Fax: +49 661 60

Page 2 - Technical data

2011-11-07/00073201Data Sheet 601530 Page 2/6JUMO GmbH & Co. KGDelivery address: Mackenrodtstraße 1436039 Fulda, GermanyPostal address:36035 Fulda

Page 3 - Dimensions

2011-11-07/00073201Data Sheet 601530 Page 3/6JUMO GmbH & Co. KGDelivery address: Mackenrodtstraße 1436039 Fulda, GermanyPostal address:36035 Fulda

Page 4

2011-11-07/00073201Data Sheet 601530 Page 4/6JUMO GmbH & Co. KGDelivery address: Mackenrodtstraße 1436039 Fulda, GermanyPostal address:36035 Fulda

Page 5

2011-11-07/00073201Data Sheet 601530 Page 5/6JUMO GmbH & Co. KGDelivery address: Mackenrodtstraße 1436039 Fulda, GermanyPostal address:36035 Fulda

Page 6 - Order details

2011-11-07/00073201Data Sheet 601530 Page 6/6JUMO GmbH & Co. KGDelivery address: Mackenrodtstraße 1436039 Fulda, GermanyPostal address:36035 Fulda

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