LIGO AIR Datasheet: Difference between revisions
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LIGO AIR maintains stability, durability, and operational lifespan equal to or greater than traditional wired sensors, with battery life ranging from 6 to 12 years depending on variant selected. | LIGO AIR maintains stability, durability, and operational lifespan equal to or greater than traditional wired sensors, with battery life ranging from 6 to 12 years depending on variant selected. | ||
== Key Features == | == Key Features == | ||
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| 14/10/2025 || 1.1 || Added LIGO AIR PRO variant and extended battery variants (LxT) | | 14/10/2025 || 1.1 || Added LIGO AIR PRO variant and extended battery variants (LxT) | ||
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Latest revision as of 06:39, 21 May 2026
Product Overview
LIGO AIR is a wireless fuel level sensor developed and manufactured by SOJI Electronics JSC. The device is designed to measure the level of liquid fuel and other non-conductive liquids in vehicle tanks and stationary fuel storage applications.
The sensor uses capacitive measurement technology combined with Bluetooth Low Energy 5.4 wireless transmission, eliminating the need for complex wiring and reducing the risk of signal wire tampering. The heavy-duty metal housing meets the IP69K ingress protection standard, providing reliable operation against dust, moisture, vibration, and high-pressure high-temperature water cleaning typical in industrial environments.
LIGO AIR maintains stability, durability, and operational lifespan equal to or greater than traditional wired sensors, with battery life ranging from 6 to 12 years depending on variant selected.
Key Features
- Wireless: Bluetooth Low Energy 5.4 with directional antenna — 1.5× range compared to typical market sensors
- Ultra-low power consumption: 9 µA working mode, 4 µA storage mode
- Long battery life: 8–10 years standard, 8–12 years extended variant
- High accuracy: up to 99.5% measurement accuracy (± 0.5%)
- Wide operating temperature: -40°C to +85°C
- Long-range TX power: up to 19.5 dBm (LIGO AIR PRO variant)
- High capacity battery: up to 3600 mAh (PRO variant), replaceable
- Built-in 32 Mb EEPROM for data logging (90 days) and setting logs (max 500)
- IP69K ingress protection — survives dust, water jets, high-pressure cleaning
- Customizable length: 700 mm to 6000 mm
- Built-in accelerometer (LIGO AIR PRO)
- Multi-protocol support: SOJI, Mielta, Escort — configurable via mobile app
- Anti-mud oil filter and anti-vibration springs included
- Anti-tampering design — wireless eliminates wire cutting fraud risk
Applications
- Heavy-duty trucks — long-haul transport, cargo vehicles
- Construction machinery — excavators, cement mixers, bulldozers
- Marine vessels — ships, fishing boats, offshore platforms
- Power generation — diesel generators, backup power systems
- Industrial fuel storage — stationary tanks, distribution depots
- Off-highway equipment — mining vehicles, agricultural machinery
- Fleet management — telematics-integrated fuel monitoring
Product Variants / Ordering Information
Product Variants
The LIGO AIR series offers three variants optimized for different operational priorities:
| Variant | Description | Battery Life | Transmission Range | Best For |
|---|---|---|---|---|
| LIGO AIR LxS | Standard version — cost-effective | 6–8 years | Standard | General-purpose vehicle fuel monitoring |
| LIGO AIR LxT | Extended-battery version | 8–12 years | Standard | Long maintenance interval applications, harsh environments |
| LIGO AIR PRO | Long-range version — high TX power | 6–8 years | 2× Standard | Marine, industrial tanks, metal-obstructed environments |
Part Numbers
| Part Number | Length L (mm) | Variant |
|---|---|---|
| LIGO-AIR-L7S | 700 ± 3 | Standard |
| LIGO-AIR-L7T | 700 ± 3 | Extended battery |
| LIGO-AIR-PRO-L7S | 700 ± 3 | Extended range |
| LIGO-AIR-L10S | 1000 ± 3 | Standard |
| LIGO-AIR-L10T | 1000 ± 3 | Extended battery |
| LIGO-AIR-PRO-L10S | 1000 ± 3 | Extended range |
| LIGO-AIR-L15S | 1500 ± 3 | Standard |
| LIGO-AIR-L15T | 1500 ± 3 | Extended battery |
| LIGO-AIR-PRO-L15S | 1500 ± 3 | Extended range |
Custom lengths up to 6000 mm available on request.
Ordering
| Item | Information |
|---|---|
| MOQ | 10 units |
| Lead time (standard) | 2–4 weeks |
| Lead time (custom) | 6–8 weeks |
| How to order | contact@sojielectronics.com or authorized distributors |
| Custom versions | Available — contact sales for specifications |
Technical Specifications
Performance
| Parameter | LIGO AIR (LxS, LxT) | LIGO AIR PRO | Unit |
|---|---|---|---|
| Measurement accuracy | ± 0.5 | % | |
| Resolution | 12 | bit | |
| Sampling period | 5 to 60 | s | |
| Measurement interval | 5 to 10 | s | |
| Advertising interval | 5 to 10 | 10 to 15 | s |
| Temperature measurement error | ± 2 | °C | |
Electrical
| Parameter | LIGO AIR LxS | LIGO AIR LxT | LIGO AIR PRO | Unit |
|---|---|---|---|---|
| Battery type | Li-SOCl₂ (Lithium Thionyl Chloride) | |||
| Battery voltage | 3.6 | V | ||
| Battery capacity | 2600 | 2400 | 3600 | mAh |
| Current (working mode) | 9 | 9 | 27 | µA |
| Current (storage mode) | 4 | µA | ||
| Battery life (expected) | 6–8 | 8–12 | 6–8 | years |
| Battery replaceable | Yes | |||
Wireless
| Parameter | LIGO AIR | LIGO AIR PRO |
|---|---|---|
| Bluetooth protocol | Bluetooth Low Energy 5.4 | |
| Standard | IEEE 802.15.4-2006 | |
| Frequency | 2.4 GHz ISM band | |
| TX power max | 6 dBm | 19.5 dBm |
| Sensitivity | -95 dBm | |
| Antenna | Directional (integrated) | |
| Range | Standard | 2× Standard |
| Advertising protocols | SOJI (default), Mielta, Escort | |
Environmental
| Parameter | Value |
|---|---|
| Operating temperature | -40 °C to +85 °C |
| Storage temperature | 15 °C to 30 °C, RH < 60 % (long-term) |
| Humidity (operating) | 5 % to 95 % RH non-condensing |
| Ingress protection | IP69K (dust-tight + high-pressure high-temperature water jets) |
| Vibration resistance | Per IEC 60068-2-6 |
| Shock resistance | Per IEC 60068-2-27 |
| Service life (expected) | 10 years |
Memory
| Parameter | Value |
|---|---|
| Memory type | 32 Mb EEPROM (built-in) |
| Data log capacity | 90 days continuous storage |
| Setting log capacity | Max 500 logs |
Mechanical Dimensions
All dimensions in millimeters (mm). Tolerances: ± 3 mm for length L, ± 0.5 mm for head dimensions, unless otherwise specified.
Length Variants
| Part Number | Length L (mm) |
|---|---|
| LIGO AIR – L7S, L7T, LIGO AIR PRO – L7S | 700 ± 3 |
| LIGO AIR – L10S, L10T, LIGO AIR PRO – L10S | 1000 ± 3 |
| LIGO AIR – L15S, L15T, LIGO AIR PRO – L15S | 1500 ± 3 |
Mounting Pattern
| Item | Specification |
|---|---|
| Central hole | Ø 42 mm (for probe) |
| Mounting holes | 4 × Ø 7 mm |
| Mounting hole spacing | 70.5 × 70.5 mm |
| Recommended fastener (≤3 mm wall) | M5 rivet nut |
| Recommended fastener (>3 mm wall) | M4.8 self-tapping screw |
Compliance and Certifications
Wireless / Radio
| Region | Standard | Status |
|---|---|---|
| EU | RED 2014/53/EU, EMC 2014/30/EU | ✓ Compliant |
| US | FCC Part 15.247 | ✓ Compliant |
| Canada | ISED RSS-247, RSS-Gen, ICES-003 | ✓ Compliant |
| UK | UKCA, UK RED | ✓ Compliant |
| Japan | MIC (Telec) | (pending) |
Environmental
| Standard | Status |
|---|---|
| RoHS 3 (2011/65/EU + 2015/863) | ✓ Compliant |
| REACH (EC 1907/2006) | ✓ Compliant |
| WEEE (2012/19/EU) | ✓ Registered |
| Battery WEEE (2006/66/EC) | ✓ Registered (Li-SOCl₂ battery) |
Mechanical / Safety
| Standard | Rating |
|---|---|
| IEC 60529 (Ingress Protection) | IP69K |
| IEC 60068-2-6 (Vibration) | Compliant |
| IEC 60068-2-27 (Mechanical shock) | Compliant |
| UN 38.3 (Battery transportation) | ✓ Compliant |
Industry-Specific
| Membership / Standard | Status |
|---|---|
| Bluetooth SIG | ✓ Adopter Member |
| Bluetooth Qualification | ✓ Qualified — see LIGO Air Memberships |
Warranty
- Warranty period: 3 years from date of shipment
- NOT covered: Battery
- Warranty void if: Operating conditions exceed specifications, unauthorized modification, or improper installation
For detailed certification documents and approval IDs, see LIGO Air Certification & Approvals.