- IIoT-ready and future-proof thanks to analogue and digital signal transmission (Modbus®) as well as wireless (LoRaWAN®)
- Time-saving instrument configuration and display of current measured values on the smartphone via NFC or WIKA app
- No cabling effort for retrofit projects thanks to battery operation and LoRaWAN®
- Decentralised data node − up to four input signals − reduces cabling effort and installation costs
- Reduction of installation costs due to simple wall or DIN rail mounting in a control cabinet
 Datasheet |
- Integrated air flow calculation based on all common formulas
- IIoT-ready and future-proof thanks to analogue and digital signal transmission (Modbus®) as well as wireless (LoRaWAN®)
- Time-saving instrument configuration and display of current measured values on the smartphone via NFC or WIKA app
- Precise measuring results, even under extreme ambient conditions
- Reduction of installation costs due to simple wall or DIN rail mounting in a control cabinet
| Datasheet |
- Decentralised PID controller – up to four input signals – reduces cabling effort and installation costs
- Integrated air flow calculation based on all common formulas
- IIoT-ready and future-proof thanks to analogue and digital signal transmission (Modbus®) as well as wireless (LoRaWAN®)
- Time-saving instrument configuration and display of current measured values on the smartphone via NFC or WIKA app
- Reduction of installation costs due to simple wall or DIN rail mounting in a control cabinet
| Datasheet |
- Dry ceramic sensor
- Smallest measuring range: 0…40 mbar
- Largest measuring range: 0…40 bar
- Accuracy ≤ 0,3%
- Robust industrial design
- Analog output: 4…20 mA, 3-wires 0…10 V, 3-wires
| Datasheet |
| User Manual |
The pressure transmitters of the series IDS1-010 and IDS1-420 is for using in air and non aggressive gases. They measure difference- and absolute pressure, relative pressure and optionally velocity of flow. The analog output signal is 0-10 V or 4-20 mA. The 4-20 mA pressure transmitter is realised in two wire technic. For measurement of velocity of flow its possible to order the square root output. Because of the piezoresistive cell IDS1 reach a high reliability and precision. The dependence of zero signal from mounting position is very small. The resistance against overpressure is higher than by using other physical principles. The transmitters are housed in a robust aluminium package. This guarantees good EMC-properties. Optionally DS1 can be completed with electronic signal damping, power supply 24VAC or 230 VAC. For applications with higher pressure ranges we offer additionally to IDS1 the type IDS2.
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The pressure transmitters of the series IDS1-010 and IDS1-420 is for using in air and non aggressive gases. They measure difference- and absolute pressure, relative pressure and optionally velocity of flow. The analog output signal is 0-10 V or 4-20 mA. The 4-20 mA pressure transmitter is realised in two wire technic. For measurement of velocity of flow its possible to order the square root output. Because of the piezoresistive cell IDS1 reach a high reliability and precision. The dependence of zero signal from mounting position is very small. The resistance against overpressure is higher than by using other physical principles. The transmitters are housed in a robust aluminium package. This guarantees good EMC-properties. Optionally DS1 can be completed with electronic signal damping, power supply 24VAC or 230 VAC. For applications with higher pressure ranges we offer additionally to IDS1 the type IDS2.
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- Electrical output signal 0 ... 10 V (3-wire)
- Simple and quick mounting
- Maintenance-free
- Maximum operating pressure 20 kPa
| Datasheet |
| User Manual |
- Electrical output signal 0 ... 10 V or 4 ... 20 mA, can be selected directly at the instrument via jumpers
- Modbus® output signal (option)
- LC display (option)
- Maintenance-free
- Maximum operating pressure 20 kPa
| Datasheet |
| User Manual |
- Simple mounting
- Two differential pressure sensors in one instrument
- Two inputs for temperature sensors or analogue signal
- With Modbus® interface
- Two-line LC display for the direct reading of both pressure values
| Datasheet |
| User Manual |
- Output signal 0 ... 10 V or 4 ... 20 mA
- Maintenance-free
- Simple operation
- High accuracy
| Datasheet |
| User Manual |
The IDM 341 is a differential pressure transmitter for non-aggressive gases and compressed air. Because of its compact and robust aluminium housing it is particularly suited for machine and plant engineering.
| Datasheet |
| User Manual |
The IDM 331 is a differential pressure transmitter for industrial applications and is based on a piezoresistive stainless steel sensor, which can be pressurized on both sides with fluids or gases compatible with SST 1.4404 and 1.4435.
| Datasheet |
| Mounting Manual |
- Measuring sensor with membranes made of stainless steel 1.4404
- Smallest measuring range: 0…50 mbar
- Largest measuring range: 0…25 bar
- Negative pressure measuring range: up to -25 bar
- Accuracy ≤ 0,2%
- One-sided overload capability up to 40 bar
- Rugged industrial design
- Analog output: 4…20 mA, 2-wires
0…10 V, 3-wires
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- Measuring sensor with stainless steel membranes made of 1.4404
- Smallest measuring range: 0…50 mbar
- Largest measuring range: 0…25 bar
- Negative pressure measuring range: up to -25 bar
- Accuracy ≤ 0,2%
- One-sided overload capability up to 40 bar
- Rugged industrial design
- Analog output: 4…20 mA, 2-wires
0…10 V, 3-wires
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The differential pressure transmitter IDPT 100 has been especially designed for fast test processes in leakage and flow measurement, where a fast response time and high sampling rate are necessary.
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| User Manual |
The digital "high performance" pressure transmitter which features remote safety handling and is ready for digitalization - developed according to IEC61508 standards for SIL2/3. Accuracy: 0,04 %
| Datasheet |
| User Manual |
especially designed for the process industry, can be used for level measurement of closed, pressurized tanks, pump or filter controlling, etc.
| Datasheet |
| User Manual |
The differential pressure transmitter XMD has been especially designed for the process industry and can be used for level measurement of closed, pressurized tanks, pump or filter controlling, etc.
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- High measurement accuracy
- Freely scalable measuring ranges
- Developed in accordance with the SIL 2 requirements
- Seven different case variants
- Configuration via DTM (Device Type Manager) in accordance with the FDT (Field Device Tool) concept (e.g. PACTware™)
| Datasheet |
| User Manual |
- Pressure Ranges
- 0…350 mbar diff., 40 bar abs.
- 0…1 bar diff., 40 bar abs.
- 0…3 bar diff., 40 bar abs.
- Accuracy ± 0,05 %FS
- Total Error Band -30…+ 60 °C ± 0,2 %FS
- Storage-/Operating Temperature Range -40…+ 80 °C
- Protection IP65
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- NLH&R Performance to 0.02%
- Pressure ranges from 70 mbar to 350 bar (1 to 5,000 psi)
- Gauge, Absolute and Differential reference
- 4-20 mA and configurable voltage output
- Total Accuracy up to 0.1%
- Frequency response to 1 kHz
- 316L Stainless Steel construction
- Operating Temperature range up to -40 °C to 125 °C survival from -55 °C to 150 °C
- ADROIT6000 app for Android™ available to download from Google Play
- ADROIT6000 app for Windows™ available to download
- ADROIT6200 Pressure Connector Options is available to download
 Datasheet |
- Dry ceramic sensor
- Ranges from 25 mbar to 60 bar
- Global errror < 0,2% F.S.
- High overload capability
- 2 adjustable switch settings
- Analog output 0(4)...20 mA or 0...10 V
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The digital pressure transmitter which features remote safety handling - developed according to IEC61508 standards for SIL2/3. Accuracy: 0,065 %
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Differential Pressure Sensors & Transmitters – precise Δp for Filters, Flow & Level
Differential pressure sensors/transmitters measure the pressure difference between two process points (high/low), enabling filter monitoring, flow measurement (e.g., orifice/venturi) and level measurement in closed tanks. Depending on design they support wet/wet or wet/dry applications and provide electrical outputs such as 4–20 mA, 0–10 V, and optionally HART, IO-Link, or RS-485/Modbus RTU.
ICS Schneider Messtechnik supports selection & sizing (range/turndown), process connections, materials/seals, 3/5-valve manifolds, overpressure protection and calibration. On request, we integrate measuring points into PLC/SCADA and—via edge gateways—into IIoT architectures (MQTT/HTTPS), including documentation and commissioning.
FAQ on Differential Pressure Sensors/Transmitters
Answers on selection, installation, turndown, accuracy, media compatibility, manifolds, flow/level calculation and digital integration.
What are common applications for differential pressure (Δp)?
- Filter/duct monitoring: Detect clogging and replacement time.
- Flow measurement: Δp across orifice, venturi, pitot → volume/mass flow.
- Level in closed tanks: Δp between bottom and gas space.
- Room/building pressure: Positive/negative pressure vs. reference room.
Wet/wet or wet/dry—what’s the difference?
| Type | Description | Advantages | Consider |
|---|---|---|---|
| Wet/Wet | Both sides exposed to the medium | Suitable for liquids & gases | Material/seal compatibility on both sides |
| Wet/Dry | One side medium, other side dry reference | Very sensitive for small Δp | Protect dry side from condensate/moisture |
How do I choose measuring range and turndown?
As a guideline, operating Δp should lie within 20–80% of full scale. Select models with turndown (e.g., 10:1) to allow optimization and filter aging.
What accuracy can I expect?
Depending on the device, typically ±0.1…1.0% FS. Check the Total Error Band (TEB), including temperature and long-term drift as well as static pressure effects.
How do I integrate Δp transmitters for flow measurement?
For primary elements (orifice, venturi, pitot), Q ∝ √Δp. Many transmitters provide square-root extraction at the output; alternatively compute in PLC/SCADA.
What do I need for proper mechanical installation?
- 3- or 5-valve manifold (isolation, zeroing, equalizing).
- Impulse lines short/symmetric; position condensate pots correctly for steam.
- Overpressure protection (limiters/protective diaphragm) against mishandling.
Which process connections are common?
| Connection | Standard | Use |
|---|---|---|
| G 1/4, G 1/2 | ISO 228 (BSPP) | General plant engineering |
| ¼″/½″ NPT | ASME | Process/US installations |
| Flange | EN/ASME | Higher pressures/media separation |
How do density/temperature affect level via the Δp method?
Level height h ≈ Δp / (ρ·g). Since density varies with temperature/product, either measure or set it as a property and apply temperature compensation if needed.
Which outputs & interfaces are available?
4–20 mA (2-wire), 0–10 V (3-wire) and optionally HART (setup/diagnostics), IO-Link or RS-485/Modbus RTU for multi-point polling and IIoT integration.
How do I avoid measurement errors caused by impulse lines?
- Keep lines equal length, avoid air/gas bubbles or condensate as appropriate.
- Prevent vibration, provide supports, leak test connections.
- Route lines downward for gases; for liquids ensure a fall/slope towards the transmitter.
Can Δp measure very small differences (room pressure)?
Yes—use low-pressure differential sensors (Pa/mbar ranges) with suitable long-term stability. Watch for zero drift and ambient influences.
How often should I calibrate?
Recommendation: annually; in QA/safety loops semi-annually/quarterly or after overload/events. ISO/DAkkS certificates are available.
What materials/seals are typical?
Wetted parts usually stainless steel 316L; seals FKM/EPDM/PTFE/FFKM depending on medium and temperature. For aggressive media consider diaphragm seals or special alloys.
Typical error causes & remedies?
- Wrong zero: not zeroed → perform equalization on 3/5-valve manifold.
- Unstable readings: pulsation/bubbles → damping/snubber, bleed/drain lines.
- Overload/damage: mishandling → overpressure protection, correct valve sequence.
- Drift: temperature/static pressure → check TEB, choose compensated devices.
How do I secure data paths in IIoT?
Ensure field robustness (EMC, shielding) and use TLS (MQTTS/HTTPS), device certificates, VPN/zero-trust, roles/scopes and audit logs towards IT/cloud.
Which IP ratings and approvals are available?
Depending on model, IP65–IP69K; optional ATEX/IECEx for hazardous areas and hygienic versions (e.g., with diaphragm seals and Tri-Clamp/Varivent®).
What documentation belongs to a Δp measuring point?
Device ID/serial no., range/turndown, medium, connection/material, manifold scheme, impulse line routing, calibration history and—if networked—address/topics/registers.
Do you support selection, installation and commissioning?
Yes—from sizing (Δp calculation, orifice/venturi), material/seal selection, manifold & protection, calibration through to commissioning with documentation and test reports.