Burkert 559610 (Type 8222) is a compact conductivity meter designed for measuring the conductivity of liquids. This ELEMENT standard variant is equipped with a two-electrode cell featuring a cell constant of C = 1.0 cm-1 and an integrated Pt1000 temperature probe. The sensor utilizes graphite electrodes and a PVDF probe holder, making it suitable for clean water and slightly concentrated liquids such as industrial wastewater. The device provides three adjustable outputs, including two transistor outputs (NPN/PNP) and one 4...20 mA analogue output, operating on a 14...36 V DC power supply.

Product Design and Materials

The conductivity sensor is plugged-in and pinned to the transmitter enclosure. The process connection is made via a G 1 1/2 union nut in PVC, designed for installation in a Burkert Type S022 adapter.

• Probe holder: PVDF
• Electrodes (C = 1.0 cm-1): Graphite
• Union nut: PVC
• Housing: Stainless steel 1.4404 (316L), PPS
• Cover: Polycarbonate (PC), transparent
• Seal: EPDM, silicone

Performance Specifications

The device converts the measuring signal and calculates the output signals, providing continuous measurement of both conductivity and temperature.

• Conductivity measuring range: 0.005...10 mS/cm (for C = 1.0 cm-1)
• Conductivity measurement deviation: ±3% of measured value
• Temperature measuring range: -20...+100 °C (restricted by PVC nut to 0...+50 °C)
• Temperature measurement deviation: ±1 °C

WARNING

The fluid temperature is restricted by the fluid pressure and the material of the union nut. For the 559610 model with a PVC union nut, the maximum fluid temperature is +50 °C at a maximum pressure of PN 16.

Electrical Data

• Operating voltage: 14...36 V DC, filtered and regulated
• Current consumption: ≤ 1 A (with transistors load); ≤ 25 mA (at 14 V DC without transistors load, with current loop)
• Analogue output: 4...20 mA (adjustable as sourcing or sinking)
• Digital output: Transistor, max. 700 mA (0.5 A max. per transistor if both are wired)
• Electrical connection: 1x 5-pin M12 male connector

Installation

The Type 8222 conductivity meter can be installed into any adapter or fitting with a G 1 1/2 external threaded sensor connection by tightening the union nut. The mounting location must provide a continuous and complete immersion of the probe in the flow stream. Air bubbles must be avoided to obtain reliable measurements.