The Pig Indicator plays a crucial role in pipeline operations. It monitors the passage of cleaning and inspection pigs. This tool provides real-time feedback on pig location. Additionally, it ensures efficient pipeline maintenance and safety, and operators rely on it to detect blockages or delays quickly. Various industries, including oil and gas, use pig indicators extensively. Its reliable performance minimizes operational downtime. Moreover, the indicator supports the effective scheduling of maintenance activities. Overall, the Pig Indicator enhances pipeline efficiency and reliability.
The pig pass indicator is the necessary equipment in the process of pipeline pass ball descaling, among which SN2-TQZ-D type indicator belongs to the mechanical contact explosion-proof type indicator. It has the advantages of a simple structure and low cost. The indication is intuitive and reliable, and has many other advantages. You can position it on the pipeline to transmit the passage of pig-type objects at a fixed point through a mechanical structure. It then provides information to the operator using electrical, optical, audio, or specialized clock signals, guiding process changes.
Parameters of Pig Indicator In Pineline
| Type: Intrusive |
| Connection type: Flange connection |
| Indicator feature: Manual reset flag combined with electrical signals (Manual reset flag and Date and time display combined with electrical signals can also be made) |
| Installing type: 2” Flange. As per ASME B16.5(CLASS150-2500) |
| Plug body length: 200mm/Meet the actual needs |
| Insert depth adjustment: 20mm |
| Operating temperature: -20~120℃/Meet customer requirements |
| NACE MR 0175: Yes |
| Ingress protection: IP66 |
| Explosion-proof class: Exd II BT4 |
| Remove under pressure: No |
| Trigger type: Bi-directional (Uni-directional trigger can also be made) |
| Internal part material: PTFE Coated A105N is standard configuration (304SS/316LSS/DSS/INCONEL/As per MR can meet customer needs) |
| Junction box material: Aluminium alloy/316SS |
| Switch type: DPDT/2*SPDT |
| Switch rating: DC24V 3A/DC24V 5A |
20mm Adjustable Pig Indicator In Pipeline
| Name | 20mm Adjustable Pig Indicator |
| Connection | Flange Connection |
| Plug body length | 200mm |
| Operating temperature | -20～120℃/Meet customer requirements |
| NACE MR 01- 75 | Yes |
| Ingress protection | IP65/IP66 |
| Explosion-proof class | ExdⅡ BT4 |
| Remove under pressure | No |
| Trigger type | Bi-directional/Uni-directional |
| Adjustable length | 20mm |
| Internal part material | 316SS/DSS/INCONEL |
| Insert depth | 21mm(Bi)/13mm(Uni) |
| Flange/Body material | PTFE coated A105N/304SS/316SS/DSS/INCONEL(As per MR) |
Working Principle
The extension sleeve holds a bidirectional firing pin at its end. It extends into the pipe through the DN50 nozzle. When the pig passes, the firing pin flicks. This action travels through the sealing sleeve’s connecting rod. It then activates the instrument button, triggering the display instrument to work.
The display instrument is a real-time time display and recording system, which triggers the action generated by the firing pin to trigger the instrument to record parameters. The operation button can also trigger the meter to work, realize parameter readings, and perform battery testing.
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