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  2. Sensors
  3. Pressure sensors
  4. Submersible pressure level sensors
  5. APR3400 Submersible Depth Pressure Transmitter

APR3400 Submersible Depth Pressure Transmitter

For accurate depth and level measurement of liquids in many applications


Key features

  • Ceramic thick film sensor technology
  • Preassure ranges 0-5mWG to 0-500mWG
  • 4-20mA two wire output as standard
    (0-5Vdc, 0-10Vdc optional)
  • Optional ATEX approved version
  • All stainless steel housing
  • Nylon over tube for trouble free venting

About the APR3400 Protran® Submersible Depth Pressure Transmitter

The APR3400 submersible depth and level transmitter has been designed for the accurate measurement of the depth
and level of fluids. Standard version has output signal of 4-20mA, two wire. Options include; outputs of 0-5Vdc and
0-10Vdc, remote amplifier for surface adjustment of zero and span.

For submersion in aggressive or corrosive liquids the APR3400 is available in specialist materials such as Inconel 625, Hastalloy C, titanium and plastic. The standard depth transmitter is fitted with a Delrin© nose cone to reduce
sludge build-up. The nose cone connection may be replaced by a variety of threaded process connections common in sub-sea requirements. We has many options available for high pressure and hydraulic sub-sea applications.

Standard applications include reservoir and borehole level monitoring, water mains pressure metering, power level
and outlet pressure on submersible pumps. Electrical connection is via a screened cable protected by a tough
nylon pressure tight sheath, which allows excellent trouble-free venting to the surface.

An optional ATEX certified version of this product is available approved for explosion protection for flammable gases (zone 0), dusts (zone 20) and mining areas (group I M1).

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Not exactly what you’re looking for? We offer standard sensors but can also help you with a tailor-made sensor or a complete measuring solution. Please contact us for advice or budgetary pricing.

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Technical Specifications

Specification Value
Accuracy ±0.30% FS Typical max. Best fit straight line.
Operating temperature range Operating: -20°C to +60°C Media must not freeze around sensor Storage: +5°C to +40°C
Output signal 4-20mA (2 wire configuration)
Overpressure Pressure can be exceeded by up to 1.6x full scale range with no damage or change in calibration greater than ±0.5%FS.
Pressure ranges 0 to 5mWG through to 0 to 500mWG
Pressure reference Geventileerde meter
Protection of supply voltage Protected against supply voltage reversal up to 50Vdc
Supply voltage 13-36Vdc
Zero offset and span tolerance ±0.16mA