Discover the TXWPI200 Digital Pirani Vacuum Gauge featuring 5-digit LED display, dual relay outputs, and multiple communication interfaces for accurate vacuum measurement in industrial and laboratory applications.

This technical overview explores the WPI200 Pirani Vacuum Gauge's specifications, key features, and applications, providing essential information for professionals in semiconductor, research, and industrial vacuum systems.

Primary: TXWPI200 Pirani gauge, digital vacuum meter, high accuracy vacuum measurement

Long-tail: Pirani gauge with RS485, vacuum relay controller, industrial vacuum sensor

Commercial: buy Pirani vacuum gauge, vacuum measurement equipment supplier

Product Specifications

Key Technical Parameters

Advanced Features

✔ Dual programmable setpoint relays (60VDC/0.5A)
✔ Selectable analog output ranges (+2.286V~+10.0V or +2.5V~+8.5V)
✔ RS485 Modbus-RTU communication
✔ Three-button intuitive operation
✔ Multiple unit display (Pa, Torr, mBar)

Industry Applications

Case Study 1: Semiconductor Manufacturing

Implemented in plasma etching equipment, achieving:

99.7% process stability

Reduced false alarms by 40%

Seamless integration with existing PLC systems

Case Study 2: Research Laboratory

Used in molecular beam epitaxy system:

Consistent 10⁻⁴ Pa range measurements

Reliable operation for 8,000+ hours

Easy calibration for different gas types

Expert FAQs

1. What's the difference between Pirani and other vacuum gauges?

Pirani gauges are ideal for rough to medium vacuum (10⁻¹ to 10⁵ Pa), offering fast response and good durability compared to more fragile high-vacuum gauges.

2. How does gas composition affect measurements?

The gauge is calibrated for air/N₂. For other gases, apply correction factors (e.g., 0.8 for He, 1.7 for Ar). Full gas correction table available in manual.

3. Can I use one gauge to monitor two chambers?

Yes, with optional dual-sensor configuration (WPI200-D model).

4. What's the recommended calibration interval?

Annual calibration is recommended for critical applications. The gauge features built-in calibration routines for atmosphere and zero adjustments.

5. How to integrate with PLC systems?

Choose either:

Analog output (0-10V) for simple systems

RS485 Modbus for networked applications

Relay outputs for alarm/control functions

6. What's the maximum cable length?

100 meters with standard cable (8×0.14mm²). For longer distances, use RS485 with proper termination.

7. Can it withstand vacuum system bake-out?

Sensor withstands up to 150°C, but electronics should remain below 45°C.

8. How to select analog output range?

Use front panel menu to choose between:

+2.286V to +10.0V (wider range)

+2.5V to +8.5V (higher resolution at low pressure)

9. Is the display readable in bright light?

High-intensity 5-digit LED display remains visible in various lighting conditions.

10. What maintenance is required?

Minimal maintenance needed. Periodically check:

O-ring seals

Electrical connections

Sensor cleanliness