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== Product Overview ==
== Product Overview ==
<div class="dim">


''Brief 1–2 paragraph introduction to the product per IEC/IEEE 82079-1.''
The Ligo PRO 2 Fuel Level Sensor is produced and developed 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, applicable across different fields. The measured values are transmitted to an external device as output signals such as Analog, Frequency, RS232, or RS485.


'''What to fill in:'''
Ligo PRO 2 was created to satisfy the increasing demand of the transport telematics market for improved reliability of design, data accuracy, and ease of installation. The sensor is integrated with Bluetooth Low Energy (BLE) making installation more convenient, easier, and faster.
* Product name, category, primary function
* Key technology and target environment
* Value proposition for B2B customers


'''Example structure:''' "The [Product Name] is a [type] device designed for [primary application]. It features [key technology] and is built for [target environment]."
In addition, the heavy-duty metal structure helps increase protection against electrostatic, electromagnetic and conducted interference. The Ligo PRO 2 is also designed with IP69K waterproof standards and superior shock and vibration resistance.
 
</div>


== Key Features ==
== Key Features ==
<div class="dim">


''Bullet list of top 5–7 differentiating features.''
*High accuracy up to 99.5%
 
*Wide range input voltage: 6-40V
'''What to fill in:'''
*Galvanic isolation up to 2500V
* Each bullet = 1 key feature with measurable value
*Configurable length up to 6000mm
* Focus on: accuracy, connectivity, durability, compatibility
*Operating temperature: -40°C to +85°C
* Examples of features to cover:
*Built-in anti-mud oil filter and anti-vibration springs
** Measurement specifications (accuracy, range, response time)
*IP69K waterproof standard
** Connectivity (Bluetooth/WiFi/Cellular protocol + version)
*Integrated BLE technology for smartphone configuration
** Power (battery life, voltage range)
** Environmental rating (IP, operating temperature)
** Compatibility (telematics platforms, software)
 
</div>


== Applications ==
== Applications ==
<div class="dim">
''Typical use cases and industries the product serves.''


'''What to fill in:''' bullet list of applications (4–6 items)
*Trucks, excavators, heavy construction machines
* Each bullet = 1 specific industry/use case
*Marine vessels and electric generators
* Common categories:
*Off-highway machinery including high-temperature and vibration environments
** Transportation/Fleet (trucks, buses, trailers)
*Industrial oil storage tanks or stationary storage tanks
** Telecom (backup generators, base stations)
** Industrial (storage tanks, process monitoring)
** Marine (bunker fuel, hydraulic systems)
** Mining (heavy equipment, refueling stations)
 
</div>


== Product Variants / Ordering Information ==
== Product Variants / Ordering Information ==
<div class="dim">


''Table of all product SKUs available for ordering.''
== Technical Specifications ==


'''What to fill in:''' table with columns:
{| class="wikitable" style="text-align:center;"
* '''Model''' — short product code (e.g., LIGO-AIR-STD)
|-
* '''Part Number''' — internal SKU (e.g., SKU-001)
! Parameter !! AF !! RS232 !! RS485
* '''Description''' — variant differences (cable length, certification, etc.)
|-
* '''Region''' — geographic availability (Global, EU/APAC, US only, etc.)
| style="text-align:left;" | Standard length (L), mm || colspan="3" | 700, 1000, 1500 ... up to 6000 mm
|-
| style="text-align:left;" | Measuring error, % || colspan="3" | ± 0.5 %
|-
| style="text-align:left;" | Output signal || Analog (0-9V) || RS232 || RS485
|-
| style="text-align:left;" | Baud rate, bit/sec || colspan="3" | 2400, 4800, 9600, 19200, 38400, 115200
|-
| style="text-align:left;" | Power supply (DC input voltage, V) || colspan="3" | 6-40V
|-
| style="text-align:left;" | Supply protection (Over-voltage 100 VDC for 2 min. Reverse polarity) || colspan="3" | Yes
|-
| style="text-align:left;" | Maximum power consumption, mA || colspan="3" | 20
|-
| style="text-align:left;" | Waterproof standard (IP) || colspan="3" | IP69K
|-
| style="text-align:left;" | Operating temperature, °C || colspan="3" | -40 ... +85
|-
| style="text-align:left;" | Maximum allowed humidity level, % || colspan="3" | 100
|-
| style="text-align:left;" | Resolution, bit || colspan="3" | 12
|-
| style="text-align:left;" | Output range (min level) || Analog (0...8V) || 0 || 0
|-
| style="text-align:left;" | Output range (max level) || Analog (1...9V) || 4095 || 4095
|-
| style="text-align:left;" | Average sampling period, s || colspan="3" | 0 ... 255
|-
| style="text-align:left;" | Message interval, s || Continuous || 1 ... 255 || 1 ... 255
|-
| style="text-align:left;" | Absolute error in temperature measurement, °C || colspan="3" | ±1
|-
| style="text-align:left;" | Bluetooth specs || colspan="3" | Bluetooth 5.1, IEEE 802.15.4-2006, 2.4 GHz, -95 dBm sensitivity, +8 dBm TX Power
|-
| style="text-align:left;" | Average service life, years (expected) || colspan="3" | 10
|}


'''Common variants:''' Standard / Extended / Industrial-grade / ATEX-certified
=== Dimensions ===


<div style="text-align:center;">
[[File:LIGO-PRO-2-fig1-dimensions.jpg|frameless|915px]]
<div style="font-style:italic; color:#555;">Figure 1. Ligo PRO 2 overall dimensions (cm)</div>
</div>
</div>


== Technical Specifications ==
=== Wiring Connection ===
<div class="dim">
 
==== AF (Analog & Frequency) ====


''Detailed technical parameters of the product.''
<div style="text-align:center;">
[[File:LIGO-PRO-2-fig2-wiring-AF.png|frameless|892px]]
<div style="font-style:italic; color:#555;">Figure 2. Wiring diagram – Analog and Frequency output signals</div>
</div>


'''What to fill in:''' specification table with columns Parameter / Value / Unit / Descriptions
==== RS232 ====


'''Parameters to cover:'''
<div style="text-align:center;">
* '''Electrical''': Operating voltage, Operating current (avg/peak/sleep), Power consumption
[[File:LIGO-PRO-2-fig3-wiring-RS232.png|frameless|903px]]
* '''Performance''': Measurement range, Accuracy, Resolution, Response time, Sampling rate
<div style="font-style:italic; color:#555;">Figure 3. Wiring diagram – RS232 output signals</div>
* '''Wireless''' (if applicable): Protocol, Frequency band, Output power, Receiver sensitivity, Range
</div>
* '''Environmental''': Operating temperature, Storage temperature, Humidity, Ingress protection (IP)
* '''Mechanical''': Dimensions (L × W × H), Weight, Mounting interface
* '''Service life''': Expected years at typical operation


'''Optional sub-sections:''' If product has many specs, split into <code><nowiki>=== Performance ===</nowiki></code>, <code><nowiki>=== Electrical ===</nowiki></code>, <code><nowiki>=== Wireless ===</nowiki></code>, <code><nowiki>=== Environmental ===</nowiki></code>, <code><nowiki>=== Memory ===</nowiki></code>, <code><nowiki>=== Mechanical Dimensions ===</nowiki></code>, <code><nowiki>=== Interface / Connectivity ===</nowiki></code>, each with its own table.
==== RS485 ====


<div style="text-align:center;">
[[File:LIGO-PRO-2-fig4-wiring-RS485.png|frameless|867px]]
<div style="font-style:italic; color:#555;">Figure 4. Wiring diagram – RS485 output signals</div>
</div>
</div>


== Compliance and Certifications ==
=== Connector ===
<div class="dim">


''Regulatory certifications and standards compliance.''
<div style="text-align:center;">
[[File:LIGO-PRO-2-fig5-connector.png|frameless|703px]]
<div style="font-style:italic; color:#555;">Figure 5. Connector pin details</div>
</div>


'''What to fill in (sub-sections):'''
==== AF / RS232 Pinout ====


* '''Wireless / Radio''' — bullet list of certifications by region:
{| class="wikitable" style="text-align:center;"
** CE RED (EU) — certificate number
|-
** FCC Part 15 (US) — FCC ID
! Pin !! Description !! Wire Color
** IC (Canada) — IC number
|-
** Bluetooth SIG QDID (if BLE)
| 1 || GND || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#000;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">Black</span></div>
** RoHS 3
|-
| 2 || NC (Not connected) || NC
|-
| 3 || VCC (6-40V) || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#d63a3a;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">Red</span></div>
|-
| 4 || TXD || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#3b8dd9;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">Blue</span></div>
|-
| 5 || Analog Output || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#fff;border:1px solid #999;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">White</span></div>
|-
| 6 || RXD || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#7b3f00;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">Brown</span></div>
|}


* '''Environmental''' — standards compliance:
==== RS485 Pinout ====
** RoHS 3 (Directive 2015/863/EU)
** REACH (EC 1907/2006)
** WEEE (Directive 2012/19/EU)
** IP rating per IEC 60529


* '''Mechanical / Safety''' — test standards:
{| class="wikitable" style="text-align:center;"
** IEC 60068-2-6 — Vibration
|-
** IEC 60068-2-27 — Shock
! Pin !! Description !! Wire Color
** IEC 60068-2-30 — Damp heat
|-
** IEC 61010-1 — Electrical safety
| 1 || GND || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#000;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">Black</span></div>
|-
| 2 || RS485 (B) || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#2e8b2e;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">Green</span></div>
|-
| 3 || VCC (6-40V) || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#d63a3a;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">Red</span></div>
|-
| 4 || TXD || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#3b8dd9;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">Blue</span></div>
|-
| 5 || RS485 (A) || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#f4d03f;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">Yellow</span></div>
|-
| 6 || RXD || <div style="display:flex;align-items:center;justify-content:center;gap:8px;"><span style="display:inline-block;width:32px;height:14px;background:#7b3f00;"></span><span style="min-width:60px;text-align:left;font-weight:bold;">Brown</span></div>
|}


* '''Industry-Specific''' (remove if N/A):
== Compliance and Certifications ==
** ATEX / IECEx — for hazardous environments
Refer to [[LIGO PRO 2 Certification & Approvals]] for current certificate status.
** MID — Measuring Instruments Directive
** Automotive E-Mark — for vehicle applications
** Marine certification — DNV / ABS / Lloyd's Register


* '''Warranty''':
<div class="noprint">
** Standard warranty period (years from shipment)
** Extended warranty options
** NOT covered items
** Void conditions
** Cross-reference to [[Warranty Terms and Conditions]]


</div>
<div class="noprint">
== Related Documents ==
== Related Documents ==
''Cross-references to other documents.''
''Cross-references to other documents.''

Latest revision as of 01:31, 29 June 2026

Product Overview

The Ligo PRO 2 Fuel Level Sensor is produced and developed 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, applicable across different fields. The measured values are transmitted to an external device as output signals such as Analog, Frequency, RS232, or RS485.

Ligo PRO 2 was created to satisfy the increasing demand of the transport telematics market for improved reliability of design, data accuracy, and ease of installation. The sensor is integrated with Bluetooth Low Energy (BLE) making installation more convenient, easier, and faster.

In addition, the heavy-duty metal structure helps increase protection against electrostatic, electromagnetic and conducted interference. The Ligo PRO 2 is also designed with IP69K waterproof standards and superior shock and vibration resistance.

Key Features

  • High accuracy up to 99.5%
  • Wide range input voltage: 6-40V
  • Galvanic isolation up to 2500V
  • Configurable length up to 6000mm
  • Operating temperature: -40°C to +85°C
  • Built-in anti-mud oil filter and anti-vibration springs
  • IP69K waterproof standard
  • Integrated BLE technology for smartphone configuration

Applications

  • Trucks, excavators, heavy construction machines
  • Marine vessels and electric generators
  • Off-highway machinery including high-temperature and vibration environments
  • Industrial oil storage tanks or stationary storage tanks

Product Variants / Ordering Information

Technical Specifications

Parameter AF RS232 RS485
Standard length (L), mm 700, 1000, 1500 ... up to 6000 mm
Measuring error, % ± 0.5 %
Output signal Analog (0-9V) RS232 RS485
Baud rate, bit/sec 2400, 4800, 9600, 19200, 38400, 115200
Power supply (DC input voltage, V) 6-40V
Supply protection (Over-voltage 100 VDC for 2 min. Reverse polarity) Yes
Maximum power consumption, mA 20
Waterproof standard (IP) IP69K
Operating temperature, °C -40 ... +85
Maximum allowed humidity level, % 100
Resolution, bit 12
Output range (min level) Analog (0...8V) 0 0
Output range (max level) Analog (1...9V) 4095 4095
Average sampling period, s 0 ... 255
Message interval, s Continuous 1 ... 255 1 ... 255
Absolute error in temperature measurement, °C ±1
Bluetooth specs Bluetooth 5.1, IEEE 802.15.4-2006, 2.4 GHz, -95 dBm sensitivity, +8 dBm TX Power
Average service life, years (expected) 10

Dimensions

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Figure 1. Ligo PRO 2 overall dimensions (cm)

Wiring Connection

AF (Analog & Frequency)

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Figure 2. Wiring diagram – Analog and Frequency output signals

RS232

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Figure 3. Wiring diagram – RS232 output signals

RS485

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Figure 4. Wiring diagram – RS485 output signals

Connector

AF / RS232 Pinout

Pin Description Wire Color
1 GND
Black
2 NC (Not connected) NC
3 VCC (6-40V)
Red
4 TXD
Blue
5 Analog Output
White
6 RXD
Brown

RS485 Pinout

Pin Description Wire Color
1 GND
Black
2 RS485 (B)
Green
3 VCC (6-40V)
Red
4 TXD
Blue
5 RS485 (A)
Yellow
6 RXD
Brown

Compliance and Certifications

Refer to LIGO PRO 2 Certification & Approvals for current certificate status.

Cross-references to other documents.

Revision History

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