Differential Pressure Transmitters
Differential pressure transmitters from Aplisens are manufactured for a comprehensive range of applicable and will measurement the differential pressure of gases, vapors, liquids and slurries. Our range of differential pressure transmitters are also ideal for other applications like flow, level & density. SMART software enables many complex functions like square root, quadratic and user defined. Aplisens's APR Differential pressure transmitters are also available with their sophisticated dual sensor technology that keeps the accuracy at the published accuracy for 6 years! This is a astonishing level of stability that alternative technologies will struggle to match. Coupled with Aplisens's standard 5 year warranty, you can count on Aplisens's APR differential pressure transmitters to deliver.
Useful links: Pressure transmitters, Hydrostatic level transmitters, Instrument & Manifold valves, Diaphragm Seals
APR-2000ALW - Smart Differential Pressure Transmitter
Aplisens - Smart Differential Pressure Transmitter
- HART or Profibus PA
- Accuracy: 0.075% standard (0.05% optional, 0.04% and 0.025% on request)
- SIL 2, IECEx, MID, PED, Marine and other approvals
- Optional: All Hastelloy or Hastelloy with Tantalum diaphragm
- Hydrogen & Oxygen specification
- Static pressures up to 1000 bar (New option)
- Flow conversion modes for use with orificate plates and other flow elements
- 5 Year warranty
Data sheet
PRE-28 - General Purpose Differential Pressure Transmitter
Aplisens - Differential Pressure Transmitter
- Ranges: 16 mbar to 25 bard
- Static pressure up to 413 bar
- Marine / Ship building approval
- mA, VDC and digital output options
- Hydrogen & Oxygen specification
- SIL 1 option
- IECEx Ex d and Ex ia approval
AS-dP - Economical Differential Pressure Transmitter
Aplisens - Differential Pressure Transmitter
- Choice of range from 1 bar to 25 Bar.
- G, NPT and Metric threads
- Multiple outputs including: 4-20mA & 0-10 VDC
- 316LSS wetted parts
APR-2000ALW/SS - Smart Differential Pressure Transmitter in 316SS housing
Aplisens - Smart Differential Pressure Transmitter
- 316SS housing
- HART or Profibus PA
- Accuracy: 0.075% standard (0.05% optional, 0.04% and 0.025% on request)
- SIL 2, IECEx, MID, PED, Marine and others
- Optional: All Hastelloy or Hastelloy with Tantalum diaphragm
- Hydrogen & Oxygen specification
- Static pressures up to 1000 bar (New option)
- Flow conversion modes for use with orificate plates and other flow elements
- 5 Year warranty
APR-2000ALW/600 - High Static Pressure Differential Pressure Transmitter
Aplisens - Smart Differential Pressure Transmitter
- Supports high static pressures up to 600 bar with option for 1000 bar
- HART or Profibus PA
- Accuracy: 0.075% standard (0.05% optional, 0.04% and 0.025% on request)
- 316SS housing as option
- SIL 2, IECEx, MID, PED, Marine and others
- Hydrogen & Oxygen specification
- Static pressures up to 1000 bar (New option)
- Flow conversion modes for use with orificate plates and other flow elements
- 5 Year warranty
PRE-28.Smart - General Purpose Smart Differential Pressure Transmitter
Aplisens - Smart Differential Pressure Transmitter
- Adjustable Ranges: 2 mbar to 70 bar
- Static pressure up to 413 bar
- 4-20 mA + HART
- Excellent long term stability
- Marine / Ship building approval
- Hydrogen & Oxygen specification
- Flow conversion modes for use with orificate plates and other flow elements
- IECEx & NACE certification
PRE-28.Modbus - Smart Differential Pressure Transmitter with Modbus RTU
Aplisens - Smart Differential Pressure Transmitter
- Adjustable Ranges: 2 mbar to 70 bar
- Static pressure up to 413 bar
- Modbus RTU / RS485
- Excellent long term stability
- Marine / Ship building approval
- Hydrogen & Oxygen specification
- Flow conversion modes for use with orificate plates and other flow elements
- IECEx & NACE certification
APM-2 - Smart Differential Pressure Transmitter with Remote Sensors
Aplisens - Smart Differential Pressure Transmitter
- Differential measurement with two absolute pressure transmitters
- Facilitates large distanced between measurement points
- Individually replaceable parts
- Capable of extreme pressure measurements
- Provides feedback on differential pressure, static pressures and temperature at each point
- Optional 316SS housing
- Programmable Multi line display and keypad.
- IECEx Approval
PRE-28.Modbus/Exd & PCE-28.Smart/Exd
Smart Differential Pressure Transmitter with Modbus RTU or 4-20 mA + HART
Aplisens - Smart Differential Pressure Transmitter
- Adjustable Ranges: 2 mbar to 70 bar
- Static pressure up to 413 bar
- Modbus RTU / RS485 or 4-20 mA with HART
- Excellent long term stability
- Marine / Ship building approval
- Hydrogen & Oxygen specification
- Flow conversion modes for use with orificate plates and other flow elements
- IECEx & NACE certification
APR-2000ALW - Smart Differential Pressure Transmitter c/w single diaphragm seal
Aplisens - Smart Differential Pressure Transmitter
- Choice of diaphragm seal.
- HART, Profibus PA, IECEx, SIL, DNV, PED & more
- Optional 316SS housing
- Programmable Multi line display and keypad
- Choice of diaphragm seal type and material
- Supplied complete.
APR-2000GALW - Smart Differential Pressure Transmitter for Ultra Low Pressure
Aplisens - Smart Low Differential Pressure Transmitter
- Ideal for monitoring room pressure/ vacuum
- Ranges down to 0.2 mbar
- HART or Profibus PA
- 316SS housing as option
- Configurations for ambient pressure measurement
- Flow conversion modes for use with orificate plates and other flow elements
- IECEx approval
APR-200ALW - Smart Differential Pressure Transmitter with Remote Seals
Aplisens - Smart Differential Pressure Transmitter
- Adjustable ranges from 0.1 mH20 to 16 bar
- Fully welded sensor guarantees tightness of oil system for many years
- HART or Profibus PA
- 316SS housing as option
- SIL 2/3 certificate
- Flow conversion modes for use with orificate plates and other flow elements
- IECEx Ex d & Ex ia
APRE-2000 - Smart Differential Pressure Transmitter
Aplisens - Smart Differential Pressure Transmitter
- Static pressure up to 413 bar
- Accuracy: 0.1%
- Ranges down to 2 mbar
- 4-20 mA, HART compatible
- Flow conversion modes for use with orificate plates and other flow elements
- SS housing
APRE-2000G - Smart Differential Pressure Transmitter for Very Low Pressures
Aplisens - Smart Low Differential Pressure Transmitter
- Accuracy: 0.1%
- Ranges down to 0.2 mbar (0.02 kPa)
- 4-20 mA, HART compatible
- Flow conversion modes for use with orificate plates and other flow elements
- SS housing
APRE-2000G.N - Smart Differential Pressure Transmitter in PVC, IP65, housing
Aplisens - Smart Low Differential Pressure Transmitter
- Wall mount and perfect for monitoring room pressure/ vacuum
- Measurement spans down to 0.2 mbar
- Accuracy: 0.1%
- 4-20 mA, HART compatible
- Flow conversion modes for use with orificate plates and other flow elements
- IP65 Plastic housing
PRE-50G - General Purpose Differential Pressure Transmitter for Low Pressures
Aplisens - Differential Pressure Transmitter
- Any range from 2.5 mbar to 250 mbar
- Multiple outputs including: 4-20mA & 0-10 VDC
- SS housing & wetted parts
BDS3000 - General Purpose Differential Pressure Switch & Transmitter
Barksdale - Differential Pressure Switch/Transmitter
- Adjustable ranges for 15 to 500 psi
- Single or dual switch output
- LED display
- Field selectable 4-20 mA or 0-10 VDC
- IO-Link compatible
- 316L SS wetted parts
- Static pressure to 2500 psi (172 bar)
Application Examples
Monitoring of Filter Element:
The differential pressure transmitter is et up to monitor across the filter element as shown. By monitoring the pressure difference between the inlet and outlet side we can extract a condition of the element
A differential pressure increase across the element can indicate that a filter is blocked, dirty or needs to be serviced. Constantly monitoring the filter with a differential pressure transmitter enables predictive maintenance of the filter along with immediate indication of a problem.
Level Measurement in Pressurised Vessel
When using pressure to infer level we need to ensure the process pressure doesn't effect our calculation. To do this the high side of a differential pressure transmitter can be connected to the top of the vessel so any fluctuation of pressure from the process, vapors or other can be subtracted from the measurement. Whats left is a differential pressure measurement relative to the height of fluid above the low side of the differential pressure transmitter.
Clean Room Ambient Pressure
Clean rooms are a controlled environment consuming alot of air. The room needs to be kept at a consistent temperature, humidity and pressure to maintain the quality of the environment for workers, equipment and product.
Clean rooms are often kept above or below ambient pressure to prevent contaminants from entering or leaving the room via doors, windows or other gaps. A suitable Differential pressure transmitter will monitor the internal room pressure relative to outside so operators and control systems can respond accordingly to an undesirable reading.
A suitable differential pressure transmitter for a clean room applications needs to be accurate at very low levels of pressure, often pascals.