WIKA IPT-20 IPT-21 Industrial Process Transmitter

$120.00

The WIKA IPT-20 / IPT-21 Process Transmitter is designed for accurate industrial pressure measurement in demanding process environments. The IPT-20 features an open pressure port, while the IPT-21 uses a flush diaphragm connection for applications where buildup or contamination at the pressure port may be a concern.

With a welded metallic measuring cell, multiple communication options and ATEX / IECEx protection options, the series supports applications in chemical processing, oil and gas, and pharmaceutical and food industries.

🕑 Lead time: 6-8 weeks
Quantity:
Delivery & return Ask a Question
Visa PayPal Mastercard American Express

The WIKA IPT-20 and IPT-21 are industrial process pressure transmitters that convert measured pressure into an electrical signal for monitoring and control systems. They support gauge, absolute and vacuum measurement, depending on the selected configuration.

Key Features

  • Metal measuring cell: Welded construction for demanding process conditions.
  • Flexible outputs: 4–20 mA, 4–20 mA with HART, PROFIBUS PA or FOUNDATION Fieldbus.
  • Broad measuring range: Gauge pressure ranges extend from 0–0.1 bar to 0–4,000 bar, depending on configuration.
  • Multiple housing options: Plastic, aluminium and stainless steel, including electropolished 316L versions.
  • Hazardous-area options: ATEX and IECEx protection available for suitable versions.
  • Configuration support: Optional display and operating module, with EDD/DTM configuration tools.
  • Safety applications: Versions suitable for SIL 2 and, under specified conditions, SIL 3 applications. WIKA+1

Suitable Applications

  • Chemical and petrochemical plants: Continuous pressure monitoring in process lines and equipment.
  • Oil and gas systems: Pressure measurement in industrial process installations.
  • Food and beverage production: IPT-21 configurations with suitable flush or hygienic connections.
  • Pharmaceutical manufacturing: Process monitoring where hygienic design and appropriate materials are required.
  • Hazardous areas: Installations requiring the relevant certified transmitter configuration.

Technical Highlights & Selection Considerations

The main difference is the process connection design:

  • IPT-20: Open pressure port for conventional pressure connections.
  • IPT-21: Flush diaphragm design for applications where a conventional pressure port could be prone to clogging or product buildup.

Before ordering, confirm the pressure type and range, process connection, wetted materials, output protocol, housing and hazardous-area approvals. Accuracy depends on the selected measuring cell and configuration; do not assume all variants share the same accuracy specification.

WIKA Group+1

FAQ

Q1: What is the difference between IPT-20 and IPT-21?
The IPT-20 uses an open pressure port, while the IPT-21 uses a flush diaphragm process connection.

Q2: Which output signals are available?
Options include 4–20 mA, 4–20 mA with HART, PROFIBUS PA and FOUNDATION Fieldbus, depending on configuration.

Q3: Can the transmitter be used in hazardous areas?
Yes. Versions with suitable ATEX and IECEx protection are available. Confirm the exact approval required for the installation.

Q4: Is the IPT-21 suitable for hygienic applications?
It can be configured with suitable flush or hygienic process connections. Verify the required connection, temperature limits and industry approvals.

Q5: What information is needed to order a replacement?
Provide the full model or part number, pressure range and type, process connection, output protocol, housing material and required certifications.

Sensor Technology & Measuring Ranges

Instrument Versions & Measuring Cells Standard version: Metal measuring cell with piezoresistive or thin-film sensor
Cooling element version: Extended medium temperature range
High-temperature version: Ceramic/metal measuring cell for medium temperatures up to 200 °C (392 °F)
Gauge Pressure Ranges 0 to 0.1 bar up to 0 to 4,000 bar (0 to 1.5 psi up to 0 to 60,000 psi)
Absolute & Compound Ranges Absolute: 0 to 0.1 bar up to 0 to 40 bar (0 to 1.5 psi up to 0 to 500 psi)
Vacuum & Compound: -0.05 to +0.05 bar up to -1 to +40 bar (-0.7 to +0.7 psi up to -14.5 to +500 psi)
Overload & Vacuum Safety Vacuum-proof; Overpressure limit up to 3x for ranges ≤ 40 bar (500 psi), 2x for ranges 40 to 1,000 bar; up to 50 bar overload on ceramic high-temperature cells

Output Signals & Communication

Signal Outputs 4 to 20 mA (analog 2-wire)
4 to 20 mA with HART® 7.3 protocol (optional SIL-2 / SIL-3 qualification)
FOUNDATION™ Fieldbus / PROFIBUS® PA
Slave electronics for electronic differential pressure systems
Dampening & Response Time Adjustable dampening: 0 to 999 s; Step response time: < 80 ms (dead time < 25 ms + rise time < 55 ms)

Measurement Accuracy & Stability

Accuracy at Reference Conditions Standard: 0.1% of span (optional high-accuracy: 0.075% of span or 0.2% of span) for ranges ≤ 1,000 bar;
0.5% of span for ranges > 1,000 bar
Turndown Ratio Up to 20:1 recommended turndown (no accuracy degradation between 1:1 and 5:1; SIL applications max. 10:1)
Non-Linearity & Repeatability Non-linearity (BFSL): ≤ 0.05% of span (≤ 1,000 bar); Non-repeatability: ≤ 0.1% of span
Long-Term Stability Standard ranges > 1 bar: ≤ (0.10% x turndown) / year
High-temperature version: ≤ (0.05% x turndown) / year
Temperature Effect < 0.075% / 10 K (max. 0.15%) within compensated temperature range 10 to 70 °C (50 to 158 °F)

Related Product