The YHZ90/360 is a portable north-seeking attitude instrument built around a three-axis integrated fiber-optic gyroscope, engineered for mine directional and attitude surveying: fast north finding (0.3° in 120 s), attitude hold, laser pointing, Bluetooth data transfer, wireless binding and a color LCD — powered by a high-density lithium iron phosphate pack. Three classes cover budget to long-run missions.
Product Images
Highlights
0.3° accuracy while tilted up to 70-80° — no stop-and-level survey workflow.
Exib I Mb intrinsically-safe marking, IP67, corrosion-resistant housing for underground duty.
S30-1 MEMS (≤3 kg) through S70-3 dual-battery fiber (≤5 kg, ≤0.5°/2 h heading hold).
Applications
Mine directional surveying ｜ Underground attitude reference ｜ Drilling orientation ｜ Any GNSS-denied underground work
Field Instrument Family — North-Seeking, Well Surveying, Current
| Product | Domain | Key specification | Environment |
|---|---|---|---|
| YHZ90/360 Attitude System | Mine directional surveying | 0.3° north-finding in 120 s, laser + Bluetooth | Exib I Mb, IP67, -20…+60 °C |
| FIW Inclinometers | Well-trajectory surveying | ±0.05° inclination, 2 m/s continuous | 175 °C, 140 MPa |
| FCT-MA Current Sensors | Power current measurement | 0.1% class, DC+AC, 1 MHz | -45…+70 °C, non-contact |
Highlighted row = this model. All figures are manufacturer specifications; full tables live on each model page (linked). Family hub: /inertial-navigation-systems/
How to Choose in This Family
- Domain first. Underground mining (YHZ), oil & gas wells (FIW) or power current (FCT) — three different physics, one instrument standard.
- Common thread. All three are fiber-gyro or fiber-optic based, GNSS-optional or contact-free, with digital interfaces for integration.
- Ruggedization. Mining explosion-rating, 175 °C downhole heat or non-contact HV insulation — matched to the environment that demands it.
Where this model sits: YHZ90/360 Attitude System is Exib I Mb, IP67, -20…+60 °C.
Full Specifications
| Parameter | S30-1 (MEMS) | S50-2 (Fiber) | S70-3 (Fiber) |
|---|---|---|---|
| Tilt range / accuracy | ±90° / ±0.2° | ±90° / ±0.2° | ±90° / ±0.2° |
| Resolution | 0.1° | 0.1° | 0.1° |
| Azimuth accuracy | ±0.8° | ±0.5° | ±0.3° |
| North-finding time | 120 s | 120 s | 120 s |
| Heading hold | ≤0.5°/h | ≤0.5°/2 h | ≤0.5°/2 h |
| North-finding at tilt | 70° | 80° | 80° |
| Core component | MEMS gyro | Three-axis fiber gyro | Three-axis fiber gyro |
| Laser pointing | Cross / line | Cross / line | Cross / line |
| Bluetooth | Yes | Yes | Yes |
| Explosion marking | Exib I Mb | Exib I Mb | Exib I Mb |
| Waterproof | IP67 | IP67 | IP67 |
| Battery | Built-in | Built-in | External dual |
| Runtime per charge | ≥8 h | ≥8 h | ≥8 h |
| Weight (with battery) | ≤3 kg | ≤4 kg | ≤5 kg |
| Operating temperature | -20 to +60 °C | -20 to +60 °C | -20 to +60 °C |
All figures are manufacturer specifications — full datasheet on request.
Ordering & Delivery — What to Know Before You Buy
MOQ, lead time, payment terms, customization scope and export-licensing documentation are confirmed per quotation — send your mission profile, target quantity and destination port with the RFQ. Standard flow below:
RFQ → engineering proposal with mission math → production and factory testing → licensed export via major Chinese ports with end-user documentation. Training and spare-parts programs available.
Compliance & Licensed Export
Not subject to US ITAR — this product is exported from China under applicable regulations with valid export licenses, the same compliance posture across every Benelabo product line.
- Licensed export with end-user documentation on every shipment
- Buyers screened as part of every quotation; an export compliance statement accompanies each quotation
- Government and agency products are supplied only to authorized organizations
- Every published figure on this page is labeled manufacturer-spec or bench-tested
FAQ
How does YHZ differ from the C/N gyrocompass line?
The YHZ is a portable, mining-rated field instrument with screen and laser pointing for underground directional surveying; the C/N series are precision north-seeking references for labs and vehicles.
Can it work while tilted?
Yes — north finding completes normally at 70° (S30-1) to 80° (S50-2/S70-3) tilt.