JUMO 902550 User Manual

JUMO GmbH & Co. KG

Delivery address: Mackenrodtstraße 14,

Postal address:
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.net

36039 Fulda, Germany
36035 Fulda, Germany

JUMO Instrument Co. Ltd.

JUMO House
Temple Bank, Riverway
Harlow - Essex CM20 2DY, UK
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.co.uk

JUMO Process Control, Inc.

8 Technology Boulevard
Canastota, NY 13032, USA
Phone: 315-697-JUMO

1-800-554-JUMO
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.us

RTD surface temperature probes

■ Temperature range from -50 to +260°C

■ With probes made of various materials

■ For round and level surfaces

■ Easy and quick installation

■ Low thermal mass

RTD surface temperature probes are used for measuring temperatures on closed pipework and/
or other round or level surfaces. Versions 902522/10 and 902522/11 can be attached to any sur­face, for example a heating platen, via their mounting holes. The remaining versions avoid the
necessity for mechanical modification of the measurement location due to their easy installation
via cable ties or hose clamps.

An advantage to the indirect method of temperature measurement is that disruption of the flow
stream is avoided. Additionally, the life of the RTD is not shortened by the effects of either pres­sure or chemicals.

The low thermal mass of the sensor means that there is very little influence of the sensor on the
measured object. Thermal conductance paste is available to improve heat transfer. Large dif­ferences in temperature between the measured medium and the surrounding ambient air will
influence the measurement; in such cases, we recommend additional insulation around the sen­sor.

The measurement insert is normally fitted with a Pt 100 temperature sensor as per DIN EN
60751, Class B in 2-wire circuit; versions with Pt 500 or Pt 1000 can also be supplied.

Data sheet 90.2550 (90.2522) Page 1/4

Technical Data

Connection Various cable termination types are available: tin-plated, with ferrules, contacts or multi-pole

Cable Silicone, ambient temperature -50 to +180°C

Thermowell Stainless steel 1.4571 (equivalent to SS316 Ti), aluminum, plastic
Measuring insert Pt 100 temperature sensor, DIN EN 60 751, Class B, two-wire circuit

connectors

PTFE, ambient temperature -190 to +260°C
Kapton, ambient temperature -50 to +260 °C

2011-01-31/00311506

JUMO GmbH & Co. KG

2

4-4,5

3

5.3

4.1

30 AL

2

4

40

AL

Delivery address: Mackenrodtstraße 14,

Postal address:
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.net

36039 Fulda, Germany
36035 Fulda, Germany

Dimensions

JUMO Instrument Co. Ltd.

JUMO House
Temple Bank, Riverway
Harlow - Essex CM20 2DY, UK
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.co.uk

JUMO Process Control, Inc.

8 Technology Boulevard
Canastota, NY 13032, USA
Phone: 315-697-JUMO

1-800-554-JUMO
Fax: [phone]
E-mail: [e-mail]
Internet: www.jumo.us

Data sheet 90.2550 (90.2522) Page 2/4

Basic type 902550/10 Basic type 902550/11 Basic type 902550/20

Basic type 902550/30 Basic type 902550/31 Basic type 902554/41

Basic type 902554/42

2011-01-31/00311506