Type 8221

6 | 18

Visit product website 

2.

Product variants

2.1. 4-electrode conductivity probe

Probes based on the 4-electrode principle are available in two electrode architectures.

Four active electrodes positioned laterally on the periphery of the armature

Product properties

Material

Electrode in stainless steel 1.4435/316L, armature in PEEK (conform to FDA

- 21CFR 177.2415) and stainless steel 1.4435/316L

Cell constant 1.)

0.147 cm-1

Measuring range

0.1 µS/cm…500 mS/cm

Medium data

Fluid temperature

- 20…+ 135 °C (- 4…+ 275 °F)

Fluid pressure

Max. 6 bar (87.06 PSI)

Process/Pipe connection & communication

Process connection

• In short or long immersion depths:

• 1½" clamp connection

• G 1¼" process connection (on request)

Electrical connection

VarioPin male connector (VP 6.0)

Approvals and conformities

Foods and beverages/Hygiene

ECR1935/2004 declaration

Environment and installation

Ambient temperature

• Operation: - 20…+ 135 °C (- 4…+ 275 °F)

• Storage: + 4…+ 40 °C (+ 39.2…+ 104 °F)

1.) Nominal cell constant. Every product is measured according to internal Bürkert specificatios. The individual cell constant is indicated in the calibration protocol supplied with the

product and on the label of the product. The cell constant can be influenced by the installation situation.