Pressure compensation clamping tube

Pressure compensation clamping tube with breathable membrane

Protects the junction between sensor cable and connection cable of the evaluation unit (e.g. data logger) against the ingression of moisture and dust. Thanks to its breathable membrane, the pressure compensation clamping tube is particularly suitable for pressure sensors and level sensors, for which the ambient air pressure is used as reference value (i.e. which have a small air tube in the sensor cable).

Alternatively, a clamping tube without diaphragm can be used.

Protecting cable junctions using the pressure compensation clamping tube

  • Dismantle cables: single stranded wire 8 mm / cable 35 mm

  • Gradually shorten or isolate unused wires

  • Cover cable ends with wire end sleeves

  • Remove cable gland on one side

  • Remove terminal block from the tube

  • Thread cable end through cover nut and cable gland

  • Connect cable ends via the terminal block

  • Slide terminal block back into the tube

  • Screw cable gland on the tube (torque: 3Nm)

  • Tighten cover nut (torque: 3Nm)

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Product configurator

With the help of the runtime calculator, you can estimate the autonomous runtime of the application as well as the costs incurred. The actual costs and energy consumption depend on the measurement conditions, such as the reception quality and ambient temperature. Detailed information on the tariffs can be found here.

Technical data

Pressure compensation tube
Item no. 300131
Cable diameter 8-14 mm (cable gland without pressure compensation)
6-13 mm (cable gland with pressure compensation)
4 / 7 / 10 / 13 mm (when using the enclosed cut-in sealing rings)
Cross section per strand max. 2,5 mm²
Number of clamps 5
Length to be stripped (single strand/cable) 8 mm / 35 mm (cable gland without pressure compensation)
8 mm / 65 mm (cable gland with pressure compensation)
Air flow at 70mbar 42 l/h
Length 156 mm
Weight 72 g
Protection class IP68 (2 m 30 min)
Operating temperature -25 … +60 °C
Key width of the cable gland 27 mm (without pressure compensation)
24 mm (with pressure compensation)
Tightening torque (cap nut, connection thread) 3 Nm (cable gland without pressure compensation)
3 Nm (cable gland with pressure compensation)

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Stefan Pfeffer

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