Cond Sensor InPro7250 Series

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Inductive sensor for corrosive environments

High accuracy in aggressive environments

The PEEK shaft material is highly resistant to corrosive solutions and is particularly suitable for use in severe handling conditions.

Maintenance Free Design

The InPro 7250 conductivity sensor has an extremely robust design. This allows the equipment to operate without maintenance.

Electrolyte-free design

The "electrodeless" sensor has no electrodes in contact with the sample and is therefore unaffected by coatings that could damage conventional contact sensors.

Sensor applications

InPro 7250 ST

This sensor may be used for most routine applications like conductivity measurement in industrial wastewater systems. For applications at higher temperatures and for use in hazardous areas the sensor InPro 7250 HT is the preferred alternative.

InPro 7250 HT

The InPro 7250 Series sensor is suitable for the majority of all electrodeless conductivity applications. Its compact size enables it to be mounted in a multitude of methods, including insertion (flange, bushing), and immersion. Typical applications include salinity and brine measurements, steel pickling, scrubbing towers, ion exchange regeneration, plating baths, rinse water, caustic metal cleaning, and textile measurements in scouring, mercerizing, and carbonizing baths.

InPro 7250 PFA

This sensor is particularly suited for heavy-duty chemical applications such as Oleum (highly concentrated sulfuric acid), as well as applications in the pharmaceutical and biopharmaceutical industry (CIP skids, acid and base concentration).

Sensor specifications

	InPro 7250 ST/HT	InPro 7250 PFA
Measuring principle	inductive	inductive
Sensor data
Measuring range	0…2000 mS/cm	0…2000 mS/cm
Measurement value deviation	ST: ± (0.5 % of meas. value + 25 µS) HT: ± (0.5% of meas. value + 1 µS)	± (0.5% of meas. value + 25 µS)
Cell factor nominal 1)	2.175	2.30
Transfer ratio	120	120
Temperature sensor	Pt 1000	Pt 1000
Temperature response (t90)	approx. 5 min	approx. 5 min
Ambient conditions 2)
Process temperature (general purpose)	ST: –20 °C…+100 °C (–4 °F…+212 °F) HT: –20 °C…+180 °C (–4…+356 °F)	–20 °C…+125 °C (–4…+257 °F)
Process temperature (In Ex-classified area installation)	ST: – HT: –20 °C…+130 °C (–4…+266 °F)	–20 °C…+125 °C (–4…+257 °F)
Process pressure 3)	ST: max. 8 bar (max. 116 psi) HT: max. 20 bar (max. 290 psi)	max. 16 bar (max. 232 psi)
Sensor materials
Sensor (medium wetted) 4)	PEEK glass-fiber reinforced (GF30)	PFA not glass-filled
Sensor mounting thread (G 3/4")	stainless steel	stainless steel
O-ring	Viton®	FEP
Flat gasket	Viton	PTFE
Cable
Type	ST: single coaxial cable HT: double coaxial cable	simple coaxial cable
Cable jacket	ST: PVC HT: silicone	PVC
Available cable lengths	3, 5 and 10 m (9.8, 16.4 and 32.8 ft)	3, 5 and 10 m (9.8, 16.4 and 32.8 ft)
Approvals and certificates
ATEX	ST: – HT: •	– •
FM	ST: – HT: •	– •
Quality/End control	•	•

¹⁾ This value depends on the installation.
The exact value must be determined with a calibration.
²⁾ The combination of high pressure, high temperature and/or
aggressive process medium reduces the sensor life span.
³⁾ Depending on the installation.
⁴⁾ This material is not FDA listed

Download:

Intruction Manual Cond Sensor InPro7250 Series