# ClampOn PIG Detector Ex i and Ex d e

URL: https://www.clampon.com/news/clampon-pig-detector-ex-i-and-ex-d-e/
Type: ArticlePage
Updated: 2026-01-23

**By:** [Tonje Dahl](/people/tonje-dahl.md)

The ClampOn PIG Detector provides precise pig monitoring using advanced acoustic and magnetic technology. Choose between Ex i and Ex d e for optimal safety in hazardous areas, without compromising performance.

![ClampOn PIG Detector / Signaller non intrusive ex d e version](https://clampon-production.s3.amazonaws.com/images/ClampOn_PIG_Detector__TQcPa2T.2e16d0ba.fill-1600x800.format-jpeg.jpg)

ClampOn PIG Detector Ex d e

## ClampOn PIG Detector – Ex i vs. Ex d e

The ClampOn PIG Detector is available in two explosion protection versions: Ex i (Intrinsically Safe) and Ex d e (Flameproof). Both options give operators flexibility to meet hazardous area requirements without sacrificing performance or reliability.

### Working Principle

The ClampOn PIG Detector uses both acoustic and magnetic detection to identify pigs moving through pipelines.

- Acoustic mode: Detection of Ultrasonic energy in the pipe due to PIG passing.
- Magnetic mode: Detection of disturbances in magnetic fields created by magnet-equipped pigs.

Advanced signal processing algorithm separate pig-related signals from normal flow noise, ensuring accurate detection even under challenging conditions such as high-pressure systems, multiphase flow, or varying fluid compositions. In situ calibration may be required for optimal performance of algorithm.

![ClampOn PIG Detector / Signaller Ex d](https://clampon-production.s3.amazonaws.com/images/ClampOn_PIG_Detector_open.original.jpg)

ClampOn DSP PIG Detector Ex d e with open lid and easy access to terminals blocks

### Key features:

- Non-intrusive design: Mounted externally, no pipeline penetration or process interruption.
- Real-time monitoring: Instant feedback when a pig passes the sensor location.
- Dual-mode detection: Acoustic + magnetic sensing for maximum reliability.
- High sensitivity: Detects pigs of any size, type, or speed in liquid or gas pipelines.

### Similarities Between Ex i and Ex d e

- Same design and functionality: Both versions deliver identical accuracy for pig detection.
- Easy installation: No difference in mounting—quick and safe setup.
- Reliable performance: Continuous monitoring regardless of protection method.

![ClampOn DSP PIG Detector Exd Exi](https://clampon-production.s3.amazonaws.com/images/ClampOn_PIG_Detector_ex_d_and_ex_i.original.jpg)

ClampOn PIG Detector Ex d e and Ex i

### The Difference Lies in Explosion Protection

- Ex i (Intrinsically Safe): Electronics limit energy so sparks or heat cannot ignite gases in hazardous areas. Requires barriers in the control system.
- Ex d e (Flameproof): Built to contain an internal explosion without spreading flames. No additional barriers needed.

As can be seen from the above, the choice between Ex I and Ex d e depends primarily on the explosion protection philosophy and site-specific requirements.

All ClampOn instruments are subject to the same quality system ensuring high quality and reliability.

[PIG Detector](/products/pig-detector.md)

[What is PIG Detection?](/news/what-is-pig-detection.md)

[PIG Detection](/pig-detector.md)

Frequently asked questions

[FAQ PIG Detection](/faq/#pig-detection.md)

#pig-detection

_Source:_ ClampOn AS
_Canonical:_ https://www.clampon.com/news/clampon-pig-detector-ex-i-and-ex-d-e/
_Locale:_ en