KROHNE OPTISENS PH 9100 EN - Manual (Page 10)

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DEVICE DESCRIPTION
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OPTISENS PH 9100
www.krohne.com 09/2012 - 4002314801 - MA OPTISENS PH 9100 R02 en
The OPTISENS PH 9100 is manufactured using a pH sensitive special glass which can be used in
almost all standard water applications due to its wide measuring range.The pH sensors are
available with different diaphragms:
pH sensor with open diaphragm and Pt100
open diaphragm (microscopically small hole in the glass); integrated Pt100 temperature
measurement; suitable for cooling water, wastewater and chemical industry applications.
pH sensor with ceramic diaphragm
Ceramic diaphragm; suitable for drinking water and pool industry applications.
pH sensor with PTFE diaphragm
Dirt-repellent Teflon diaphragm; suitable for wastewater, surface water and process water
applications.
2.3 Nameplate
The sensor type is specified on the labelling of the sensor package and on the sensor itself.
Figure 2-3: Diaphragm types
1 Reference electrode
2 KCl solution
3 Inner pH 7 buffer solution
4 Measuring electrode
5 PTFE diaphragm
6 Ceramic diaphragm
7 Open diaphragm
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.