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pH SENSORS

We design accurate & robust OEM combined pH sensors for aqueous measurements in laboratory, automation and process analytics with integrated temperature sensors and standard connector options. All pH sensors are according to IP67 and some have ATEX rating options. 

We offer suitable electrodes for inline pH measurements for the chemical industry, Pharma and Biotech applications. Pre-pressurized sensors elevate pressure ratings to as high as 4 bar, and high temperature insulators and materials allow temperature ratings as high as 135 °C.  The shaft diameters are 12 mm, and various lengths can be chosen based upon connectivity and liquid level. Our sleeve diaphragm technology is ideal for liquids that are batch stirred or flowing in process streams.  The diaphragm creates a consistent outflow of electrolyte around the sensor for stabilized pH readings. All pH sensors are available with analogue or digital communication.

Contact our team today for defining the measurement parameters, shape, size and material compatibility for your new sensor. 

INLINE pH SENSOR 250 & 350

For Chemistry application

The Inline sensors 250/350 are combined pH sensors with integrated temperature sensor (Pt1000) to perform inline pH measurements in chemical processes which require demanding sensor specifications. They both are pre-pressurized sensors, and thus they can measure on process conditions of up to 4 bar, without any complications. Additionally, all sensors fulfill EU ATEX directives, thus they can be used in locations classified as hazardous areas. Available as digital RS485 or analogue version.

INLINE pH SENSOR200 & 300

For Biotechnology and Pharma

The Inline sensors 200 and 300 are combined pH sensors with integrated temperature sensor (Pt1000) to perform inline pH measurements for Biotech and Pharma applications which require demanding sensor specifications. They have been designed with a silver scavenger to avoid silver ions contaminating the process sample thus interfering with the process.

INLINE pH SENSOR200

Our Inline 200 sensor can be used up to 1bar within a temperature range of 0-80°C and is available in different lent. The sensor is fully autoclavable up to 130°C and can be used in the pH measurement range from 0 to 12. 

INLINE pH SENSOR300

Our Inline 300 sensor can be used up to 4bar (pre-pressurized) within a temperature range of 0-120°C  and is available in different lent. The sensor is fully autoclavable up to 130°C and can be used in the pH measurement range from 0 to 12.

Key Features

- Reliable - correct and trusted results over the entire lifetime of the sensor

- Flexibleadaptable for measurements in vessels, tanks, or pipes

- Robustdesigned for a wide range of process environments

- Maintenance-free - the Inline sensors are always ready to use

- Communication analogue and digital

- Biotechnologies and Pharma Sensorautoclavable up to 130°C

Technical Specifications

200

300

250

350

Industry

Biotech/Pharma

Biotech/Pharma

Chemistry

Chemistry

Measuring range

0–12 pH

0–12 pH

0–14 pH

0–14 pH

Membrane

HT glass

HT glass

H glass

H glass

Shaft material

Glass

Glass

Glass

Glass

Diaphragm

Sleeve 

Ceramic pin

Sleeve 

Ceramic pin

Temperature sensor

Pt1000

Pt1000

Pt1000

Pt1000

Electrolyte

Saturated KCl gel

Prepressurized Gelified

3M KCl

Prepressurized Gelified

3M KCl

Prepressurized Gelified

3M KCl

Reference system

Ag/AgCl reference with Ag-scavenger

Ag/AgCl reference with

Ag-scavenger

Ag/AgCl reference

Ag/AgCl reference

Temperature range

0 – 80 °C

0 – 120 °C

0 – 120 °C

0 – 120 °C

High temperature

<20 min 135°C

<20 min 135°C

<20 min 135°C

<20 min 135°C

Pressure                           

1 bar 

 

4 bar (pre-pressurized)

 

4 bar (pre-pressurized)

 

4 bar (pre-pressurized)

 

Shaft diameter

 

12 mm

 

12 mm

 

12 mm

12 mm

Sensor connector

VarioPin, PG 13.5

VarioPin, PG 13.5

VarioPin, PG 13.5

VarioPin, PG 13.5

Output signal

Analog or Digital

Analog or Digital

Analog or Digital

Analog or Digital

Min. Immersion

depth

 

25 mm

25 mm

25 mm

25 mm

Length (mm

120, 225, 325, 360, 425

120, 225, 325, 360, 425

120, 225, 325, 360, 425

120, 225, 325, 360, 425

ATEX

No

No

Yes

Yes

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