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We are asked about hydraulic monitoring often, and the honest answer is narrow: a standard 0–500 kPa sensor suits low-pressure and pilot circuits, not the main circuit of a working machine. This page says exactly which is which, so nobody orders the wrong part.

Hydraulic pilot pressure sensor: 0-500 kPa circuits

Hydraulic pilot pressure sensor: 0-500 kPa gauge at ±2 kPa, IP67, BLE phone readout.

Pilot lines and low-pressure hydraulic circuits sit inside 0-500 kPa gauge (0-600 kPa absolute), which is where the standard sensor is accurate to ±2 kPa; a main hydraulic circuit does not, and that is a different product rather than a setting. The sensor is IP67, runs on a CR1632 cell for about 1.5 years, and reports over 2.4 GHz BLE 4.1 to a phone.

The range question comes first

If your application is in the first or second row, the answer is a different sensor with a different range, and that is a specification conversation, not a catalogue order. We would rather say that now than send a part that reads saturated at 5 bar.

Where our sensor is genuinely useful in this space

• Test benches and rigs — low-pressure checks without wiring the rig.
• Air-over-oil and pneumatic-hydraulic intensifiers at the low side.
• Return lines and accumulators where pressure is low but a slow change matters.

What it gives you

• 2.4 GHz Bluetooth, no receiver: the phone is the reader.
• 0–500 kPa gauge, ±2 kPa, IP67, Ø21 × 16 mm.
• CR1632 replaceable, about 1.5 years, and a media-compatible wetted port on request.

What we will not claim

We will not tell you a 5 bar sensor monitors a 200 bar circuit, and we will not fit our standard valve-thread body to a wetted hydraulic port without agreeing the thread and the seal first. Where the medium is oil rather than air, that is a question for the specification, not for the datasheet.

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