Differential Pressure
A DP level transmitter works out liquid level from the pressure of the liquid column, including in closed and pressurised tanks. PIC Engineering supplies the Aplisens APM-2 with two absolute pressure modules for vessels under pressure, and the APR-2200 ALW with two diaphragm seals. Both give 4 to 20 mA with HART; see our Aplisens range. How the low side cancels tank pressure, and when a wet leg or seals are needed, is in our guide to the differential pressure transmitter.
APM-2 Smart DP transmitter for pressure vessels
APRE-2000 Smart DP Transmitter
The Aplisens APRE series features smart differential pressure transmitters designed for measuring the pressure of gases, vapours, and liquids without a local display. Employing high-precision piezoresistant silicon sensors, these field instruments offer a cost-effective, high-accuracy alternative for remote setups.
- Media Isolation: Configurable with single or dual remote diaphragm seals to isolate internal components from extreme media heat or corrosive chemicals.
- Wetted Elements: Diaphragms can be constructed using Gold-plated layers, Tantalum, or Hastelloy C276 for aggressive environments.
- Low-Range Detection: The APRE-2000G variant targets ultra-low gas pressures, chimney draughts, and furnace ventilation systems.
- Rugged Specs: Operates at 0.1% accuracy and withstands heavy overpressure lines up to 320 bar within an IP65/IP66 casing.
- Output Modes: Supports standard 4–20 mA analogue output embedded with the HART protocol.
Smart DP transmitter APR-2200 ALW with 2 Diaphragm Seals
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Tell us the duty, we will find the instrument.
Medium, range, temperature and connection is all we need. Differential Pressure is a fraction of what the 14 principals build, and anything they list we can quote.