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
Email: mail@jumo.net
Internet: www.jumo.net
JUMO Instrument Co. Ltd.
JUMO House
Temple Bank, Riverway
Harlow, Essex CM20 2DY, UK
Phone: +44 1279 635533
Fax: +44 1279 635262
Email: sales@jumo.co.uk
Internet: www.jumo.co.uk
JUMO Process Control, Inc.
6733 Myers Road
East Syracuse, NY 13057, USA
Phone: 315-437-5866
1-800-554-5866
Fax: 315-437-5860
Email: info.us@jumo.net
Internet: www.jumousa.com
Page 1/4 Data Sheet 202925
V1.00/EN/00430566
Brief description
Conductivity sensors are used in conjunction with suitable transmitters to determine the
electrolytic conductivity of liquids.
JUMO 202925 Series conductivity sensors can be employed in areas such as:
•media separation
• drinking water purification
• check and treatment of wastewater and domestic water
When conductivity measurements are required in ranges above 10 mS/cm, we recommend use
of the state-of-the-art 4-pole measuring technique or inductive conductivity measurement tech-
nology.
JUMO tecLine CR-GT
Conductive 2-Electrode Conductivity Sensor
Industrial Version with graphite electrodes
Series 202925
• 2-electrode system
• cell constant K = 1.0
• measuring range 10 µS/cm to 15 mS/cm
• different process conecctions enable optimal adaption to process conditions
Principle of operation
202925 Series conductivity cells are 2-electrode conductivity sensors. An a.c. voltage is applied
through the transmitter. The current flowing through the liquid and the electrodes is determined
by the conductivity of the liquid.
V1.00/EN/00430566
Data Sheet 202925 Page 2/4
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
Email: mail@jumo.net
Internet: www.jumo.net
JUMO Instrument Co. Ltd.
JUMO House
Temple Bank, Riverway
Harlow, Essex CM20 2DY, UK
Phone: +44 1279 635533
Fax: +44 1279 635262
Email: sales@jumo.co.uk
Internet: www.jumo.co.uk
JUMO Process Control, Inc.
6733 Myers Road
East Syracuse, NY 13057, USA
Phone: 315-437-5866
1-800-554-5866
Fax: 315-437-5860
Email: info.us@jumo.net
Internet: www.jumousa.com
Technical data
Cell constant
a
a
Depending on the production conditions, the cell constant can deviate by ±10 % from the nominal value. This deviation can be compensated
at the transmitter.
K = 1.0
Typical measuring ranges
b
b
The measuring range also depends on the transmitter used.
When used for a wider range than the typical one, measurement errors caused by polarization may occur.
10 µS/cm to 15 mS/cm
Temperature compensation with Pt100 or Pt1000
Process connection standard: G 3/4A
optional: G 1A oder NPT3/4-14 or taper connection DIN 11851 - DN 25 (milk cone)
Body material PVDF
Cell material graphite/PES
Maximaler pressure 16 bar at 25 °C or 9 bar at 60 °C; at 130 °C max. 1 bar
Maximale temperature PVDF 130 °C
Electrical connection angled connector (Hirschmann connector) to DIN 43650, protected to IP65,
10 m fixed cable 10 m,
other cable lengths on request