Pig Signaller Intrusive Type

The EMT Pig Signaller Intrusive is an essential device working for confirm the movement of pipeline pigs through a pipeline. These devices are typically positioned at both pig launching and receiving stations, as well as key points along a pipeline, ensuring comprehensive monitoring and operational efficiency.

Description

Basic Feature or Parameter of Pig Signaller Intrusive Type
Pig Signaller Intrusive Type                                    B                                         C                                     D
TypeIntrusive
 Indicator featureManual reset flagManual reset flag combined with electrical signalsDate and time display combined with electrical signals
Installing type2″Flange. As per ASME B16.5 (CLASS150~2500)
Plug body length
_Correspond to total stand off
200mm/Meet the actual needs
Insert depth adjustment20mm
Operating temperature-20~120℃/Meet customer requirements
NACE MR 0175Yes
Ingress protectionIP66
Explosion-proof classExdⅡ BT4ExdⅡ BT4
Remove under pressureNO

 

Optional Feature
 Standard configuration              Optional configuration            — None
Trigger type
(B-Bi-directional/U-Uni-directional*)
●/○
Internal part material
(316L SS/DSS/INCONEL)
●/○/○
Flange/Body material 

(PTFE Coated A105N/304SS/316LSS/DSS/INCONEL

/As per MR)

●/○/○/○/○/○
The position of Internal liquid surface 

(High_Need to heating/Low_With no need for heating) [Only uni-directional pig detectors]

●/○
Junction box material 

(Aluminium alloy/316SS)

—/—○/●●/—
Switch type 

(DPDT/2*SPDT)

—/—○/●○/●
Switch rating 

(DC24V 3A/DC24V 5A)

—/—●/○●/—
Electrical connection size 

(M20×1.5(F)/1/2NPT(F))

—/—●/○●/—
* Standard configuration of Uni-directional trigger is ball shape.
Corresponding relations between trigger and Insert depth (In pipe)
Trigger type Bi-directional  Uni-directional
Insert depth (In pipe)21mm13mm

Pig Signaller Intrusive Type

1. Introduction to EMT Pig Signaller Intrusive

The EMT Pig Signaller Intrusive is an essential device working for confirm the movement of pipeline pigs through a pipeline. These devices are typically positioned at both pig launching and receiving stations, as well as key points along a pipeline, ensuring comprehensive monitoring and operational efficiency.

2. Key Features and Functionality

  • Adjustable Range and Design

The pig signaller features an adjustable range of 0-14mm, allowing flexibility in various pipeline conditions. This design ensures precise detection and reliable signaling of pig passage through the pipeline.

  •  High Precision and Reliability

The passing ball indicator is designed to display the passing time of pigs and provide an alarm signal. This real-time indication allows operators to monitor pig passage accurately. The digital display offers clear and reliable instructions, and the device is equipped with a remote signal for added convenience. When the pig passes, a mechanical ram is triggered. Which activates a micro switch to give an on or off signal. The clock on the control base stops, and the signal can be transmitted to an upper computer while the mechanical part automatically resets. The gauge section can be manually reset for continued operation.

  • Advanced Technology

The intelligent electronic passing ball indicator produced by EMT overcomes the false alarms associated with older models. It uses a double-probe structure to eliminate interference from external magnetic force lines. This enhancement provides a larger receiving range and faster response speed. The device also features memory and sound and light alarms to ensure accurate alerts when the pig passes through.

  • Electronic Positioning Receiver

The electronic positioning receiver is to detect the operation of the pig and accurately locate any jams. It is resistant to shock and interference caused by vibrations, ensuring no false alarms. The compact and portable design makes it convenient for field and night use, enhancing operational flexibility.

3. Specifications

  • Explosion-proof grade: dll BT4
  • Protection grade: IP65
  • Anti-corrosion grade: WFI
  • Hole thread for remote signal: 1/2NPT
  • Contact capacity: 24V DC, 3A

4. Applications and Usage

1. Segmental and Fixed-point Monitoring

The passing indicator is for segmental and fixed-point monitoring of pig operations in long-distance pipelines. By placing indicators at regular intervals, operators can quickly determine the approximate location of any blockages, significantly reducing the time and effort required for manual searches.

2. Effective Detection and Positioning

The electronic positioning receiver provides a precise method for detecting and locating pigs within the pipeline. By adjusting the gain knob and using the probe correctly, operators can identify the exact position of the pig, ensuring efficient maintenance and troubleshooting.

5. Maintenance and Precautions

To ensure the longevity and reliability of the pig detector pipeline, regular maintenance and proper usage are crucial:

  • Battery Check: Always check the battery levels before use. Replace batteries if the voltage indicator shows less than 80%.
  • Proper Installation: Follow the correct procedures for plugging in the probe and turning on the power switch. Allow the instrument to stabilize for 30 seconds before use.
  • Gain Adjustment: Adjust the gain knob according to the buried depth of the pipeline. Higher gains may be needed when the probe is close to the pig.
  • Location Selection: Place indicators ahead of bends or at shallow buried depths for optimal signal reception. Avoid areas with high-voltage lines or strong interference sources.

The EMT Pig Signaller Intrusive Type is a reliable and efficient tool for ensuring the smooth operation of pipeline pigging systems. With advanced features for accurate detection, real-time monitoring, and easy maintenance, it significantly enhances pipeline safety and operational efficiency. By integrating this tool into your pipeline maintenance strategy, you can ensure the reliable performance and longevity of your pipeline infrastructure. Contact EMT today to learn more about our innovative pigging solutions and how they can meet your specific needs.

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