S.A Electronic Private Limited

The WIKA A-10 pressure sensor (pressure transmitter) is a widely used industrial sensor. It’s considered an “all-rounder” for general pressure measurement applications.

🔧 Overview of WIKA A-10

• Type: Pressure transmitter / sensor
• Brand: WIKA
• Model: A-10
• Use: Industrial pressure measurement (machines, hydraulics, compressors, etc.)

Key Features

• Measures gauge, absolute, and vacuum pressure
• Wide measuring ranges (approx. 0…0.05 bar up to 1000 bar)
• Output signals:
  • 4–20 mA
  • 0–10 V / 0–5 V
• Accuracy: typically 0.25% or 0.5%
• Very durable: up to 100 million load cycles
• Compact and easy to install
• Highly configurable (millions of variants)

⚙️ Applications

• Machine building
• Hydraulics & pneumatics
• Pumps & compressors
• Automation systems
• General industrial processe

Key Features (Why S-20 is used in demanding environments)

• Very high pressure range:
  0…0.4 bar up to 1600 bar
• High accuracy & stability:
  Available in multiple accuracy classes with very low temperature error
• Long life & reliability:
  Up to 100 million load cycles and long-term stability <0.1%
• Extreme environmental resistance:
  Works reliably under:
  • High vibration
  • High temperature
  • Aggressive / corrosive media
• Flexible configuration:
  Over 1 billion possible variants (range, output, connections)
• Protection ratings:
  Up to IP68 / IP6K9K (dustproof & waterproof)

WIKA O-10 is a cost-optimized OEM pressure transmitter designed for general industrial (non-hazardous) applications.

👉 Key idea:

It is NOT intrinsically safe (no Ex ia) → only for safe areas

🔹 Main features

From official specs:

• Pressure range: ~6 to 600 bar
• Accuracy: ~±0.5%
• Output signals:
  • 4–20 mA
  • 0–10 V, 0–5 V, etc.
• Compact design → easy integration in machines
• Dry thin-film sensor → long life, low wear
• High durability: >100 million load cycles

🔹 Typical applications

• Hydraulics & pneumatics
• Pumps & compressors
• Machine building / OEM equipment
• Automation systems

digital, pressure, differential, gauge, and absolute pressure sensors . Pressure Sensors (General)

A pressure sensor measures force per unit area of a fluid (liquid or gas).

👉 It is a broad category that includes:

• Absolute
• Gauge
• Differential
• Digital (based on output type)

📏 2. Absolute Pressure Sensor 🔹 Definition:

Measures pressure relative to a perfect vacuum (0 pressure)

🔹 Reference:

• Internal sealed vacuum

🔹 Key Point:

• Includes atmospheric pressure

🔹 Example:

• Atmospheric pressure ≈ 101.3 kPa → sensor reads this value

🔹 Applications:

• Altitude measurement
• Weather monitoring
• Vacuum systems

🌍 3. Gauge Pressure Sensor 🔹 Definition:

Measures pressure relative to atmospheric pressure

🔹 Reference:

• Ambient air

🔹 Key Point:

• Reads zero at atmospheric pressure

🔹 Example:

• Tire pressure gauge

🔹 Applications:

• Hydraulic systems
• Compressors
• Industrial pressure measurement

⚖️ 4. Differential Pressure Sensor (DPT) 🔹 Definition:

Measures difference between two pressures

🔹 Formula:

• ΔP = P₁ − P₂

🔹 Key Point:

• No fixed reference (compares two inputs)

🔹 Applications:

• Flow measurement (orifice, venturi)
• Filter monitoring
• Level measurement (tank)

💻 5. Digital Pressure Sensor 🔹 Definition:

A pressure sensor with digital output signal

🔹 Output Types:

• I²C
• SPI
• UART

🔹 Key Point:

• Can be:
  • Absolute
  • Gauge
  • Differential

👉 “Digital” refers to output type, not pressure reference

🔹 Features:

• High accuracy
• Built-in signal processing
• Easy microcontroller interface

🔹 Applications:

• IoT devices
• Medical equipment
• Smart systems

WIKA IS-3 is a well-known intrinsically safe (Ex ia) pressure sensor / transmitter used in hazardous areas. Here’s a clear, practical explanation with real options.

🔹 What is WIKA IS-3?

It’s a high-performance Ex ia pressure transmitter designed for explosive environments like oil & gas, chemical plants, etc.

Key point:

It is certified intrinsically safe (Ex ia) → suitable even for Zone 0.

🔹 Key technical features

From official data:

• Protection: Intrinsic safety Ex ia
• EPL: Ga / Da / Ma (gas, dust, mining)
• Pressure range: Up to 6000 bar
• Temperature: Up to 200°C
• Output: Typically 4–20 mA
• Approvals: ATEX, IECEx, FM, CSA
• Ingress protection: Up to IP68 (depending on model)

👉 Designed for:

• Gas hazardous areas (Zone 0)
• Dust hazardous areas
• Mining environments

🔹 Typical applications

• Oil & gas pipelines
• Refineries
• Compressors
• Chemical processing