Description
TL;DR
The EMT intelligent digital transmitter is a pigging transmitter (LCQZ-ZFS) that mounts inside a mechanical pig’s steel frame and emits an ultra-low frequency signal. It lets crews track pig position and locate a stuck pig in minutes. ASME-built; NACE-compliant materials on request.
What Is the Intelligent Digital Transmitter?
The intelligent digital transmitter is a pigging accessory from EMT for mechanical cleaning, batching, and inspection pigs. It installs inside the pig’s steel mandrel frame and emits an ultra-low frequency signal a surface receiver follows along the line.
Key points:
– Signal source — Mounted on the pig, it transmits a stable ultra-low frequency signal without external wiring
– Stable frequency — A dedicated IC and single-chip MCU hold frequency steady for reliable detection above DN150
– Stuck-pig location — Operators pinpoint the exact stuck position fast, cutting excavation and downtime
Unlike a passive marker, it actively broadcasts its location, so one receiver tracks the pig through long, buried, or offshore sections.
What Problem Does an Intelligent Digital Transmitter Solve?
A pig can stall in a long buried line and leave crews guessing where to dig. Without a live signal, locating it means long stoppages and blind excavation across sensitive right-of-way.
Q: How do you find a pig that is stuck in a pipeline?
A: Install an intelligent digital transmitter inside the pig’s steel frame before launch. It sends an ultra-low frequency signal that a surface receiver tracks, so your crew locates the exact stuck position in minutes instead of excavating blind and losing days of production.
Technical Parameters
EMT builds each intelligent digital transmitter to the LCQZ-ZFS design with a stable single-chip circuit and traceable materials. Standard thread and battery options ship to order.
| Parameter | Specification |
|---|---|
| Model | LCQZ-ZFS intelligent digital transmitter |
| Mounting | Inside mechanical pig steel frame |
| Signal Type | Ultra-low frequency electromagnetic |
| Frequency Stability | Dedicated IC + single-chip MCU |
| Usable Line Size | Above DN150 (6 in) and larger |
| Power Source | 1.2 V x 10 rechargeable pack or 3.6 V x 4 high-energy battery |
| Continuous Runtime | 100-200 hours |
| Installation Thread | M64 x 1.5 |
| Length Variants | L210, L260, L310 |
| Housing Material | Stainless steel; carbon-steel frame compatible |
| Signal Note | Magnetic steel frames attenuate signal; specify carbon steel or consult |
| Documentation | EN 10204 3.1 material certificate |
Product Advantages
- Stable tracking signal — Dedicated IC and MCU keep frequency steady for consistent detection above DN150
- Long runtime — 100-200 hours of continuous transmission covers long-haul and multi-day pigging runs
- Tool-free install — M64 x 1.5 thread drops into the pig frame without special fixtures
- Size options — L210/L260/L310 lengths match short, standard, and long mandrel pigs
- Fast stuck-pig location — A surface receiver finds the exact position, avoiding blind excavation
Where Is an Intelligent Digital Transmitter Used?
- Long-distance oil lines — Track pigs across hundreds of kilometers of buried pipeline
- Offshore tiebacks — Locate pigs where visual confirmation is impossible
- Pre-commissioning — Confirm pig travel through new, unproven lines
- Stuck-pig recovery — Pinpoint the exact obstruction point before excavation
- Water injection lines — Monitor pig position in corrosion-control programs
- Refinery turnarounds — Coordinate cleaning pig passes during shutdowns
Pair it with Pipeline Pig and Pig Launcher and Receiver for a complete tracked pigging run.
About EMT
EMT is a Shenyang manufacturer of oil and gas pipeline accessories with more than 25 years of engineering experience in the energy sector.
Capabilities:
– 5-axis CNC machining and a 10,000 psi (69 MPa) pressure test bay
– ASME Section IX welding plus NDT (UT, PT, RT, MT)
– Monthly output of 500+ closures and 1,000+ injection quills; pigs and accessories built to order
– Engineering support in 4 languages: English, Arabic, Spanish, Chinese
Certifications: ASME U-Stamp, ISO 9001 quality system, NACE MR0175 / ISO 15156 sour service compliance, EN 10204 3.1 mill certificates.
Service: Ships to 30+ countries with standard lead time 4-6 weeks and custom orders 6-10 weeks. Field engineers give installation guidance on request.
Frequently Asked Questions
Q: What is an intelligent digital transmitter used for?
A: It is a pigging transmitter that fits inside a mechanical pig’s steel frame. It sends an ultra-low frequency signal so crews track the pig and, if it stalls, locate the stuck point without blind digging.
Q: How long does the intelligent digital transmitter run?
A: The LCQZ-ZFS runs 100-200 hours on a 1.2 V x 10 rechargeable pack or a 3.6 V x 4 high-energy battery, covering long-haul and multi-day pigging runs before retrieval.
Q: What pig sizes does it suit?
A: EMT supplies L210, L260, and L310 length variants for short, standard, and long mandrel pigs, recommended for lines above DN150 where detection is most reliable.
Q: Can a magnetic steel pig frame affect the signal?
A: Yes. A magnetic steel frame can attenuate the signal. EMT recommends a carbon-steel frame or a custom solution; contact our engineers when you need both.
Q: How is it installed in the pig?
A: It screws into the pig’s mandrel frame via an M64 x 1.5 thread with no tools or wiring, then transmits as soon as the pig is launched into the line.
Related Products
- Pipeline Pig — The mechanical pigs that carry the transmitter
- Pig Launcher and Receiver — Launch and retrieve transmitter-equipped pigs
- Pig Signaller — Ground-based pig passage detection at stations
- External: ASME B31.3 Process Piping
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