Well Level Sensor

GLT530 deep well water level sensor is a liquid level measuring device specially produced for deep wells, 

drilling wells, boreholes and groundwater level measurement. Different from traditional liquid level sensors, 

GLT530 deep well water level sensor has a small diameter and can be customized to 16mm and 19mm, 

which perfectly solves the problem of narrow space. This product adopts an advanced silicon piezoresistive

 core, the principle that the level of the measured liquid is proportional to the pressure, and converts the

 pressure signal into the liquid level value. This product has the characteristics of high stability and high 

reliability. It adopts full welding technology to avoid the leakage caused by traditional ring sealing, so the 

product is waterproof for a long time and the protection level reaches IP68. It is an ideal product for deep

well water level measurement.

Product Characteristics

• High Precision | 0-200m Deep Measurement | IP68 Waterproof | RS485 & 4-20mA Output
• The GLT530 is a high-performance, industrial-grade submersible level sensor designed for long-term, reliable
• monitoring of water levels in deep wells, reservoirs, rivers, and tanks. With its rugged stainless steel construction and advanced pressure-sensing technology, it delivers stable data even in the most challenging underwater environments.
• High-Precision Measuring (±0.5% FS) Equipped with a high-sensitivity silicon piezoresistive core, the GLT530 provides 

accurate and stable level readings with minimal temperature drift. It is perfect for critical water resource management 

and environmental monitoring.

• Deep Well Capability (Up to 200m H2O) Specifically engineered for deep-water applications, this sensor supports a wide

range of measuring depths from 0-1m up to 0-200 meters. Its reinforced cable design prevents stretching and ensures 

signal integrity at extreme depths.

Dual Output: Analog & Digital Flexible integration for any system! Choose between the classic 4-20mA analog signal for 

IP68 Fully Sealed Protection The entire housing is made of 304 or 316L Stainless Steel, laser-welded for a perfect seal. 

• High-Strength Venting Cable The specialized cable contains a high-strength Kevlar core for tensile strength and a venting 

Product Parameter

Application

Company Profile

FAQs

1. What is the main difference between GLT530 and other level sensors?

The GLT530 is a "drop-in" submersible sensor. Unlike ultrasonic or radar sensors, it is installed at the bottom

of the liquid, making it immune to surface foam, dust, or tank internal structures. It is the most cost-effective

 and reliable method for 

deep well monitoring.

2. Can I use this sensor in corrosive liquids like seawater or chemicals?

The standard model is 304 Stainless Steel. For seawater or mildly corrosive chemicals, we highly recommend

our 316L Stainless Steel or Titanium housing options to ensure long-term durability.

3. How do I handle the cable during installation?

The cable includes a vent tube. It is critical that the end of the cable (where it connects to your junction box)

is kept in a dry, ventilated area. We provide a special waterproof junction box with a desiccant to prevent 

moisture from entering the vent tube.

4. Is the cable length customizable?

Yes! We can customize the cable length according to your specific depth requirements. We typically 

recommend the cable be 1~2 meters longer than the maximum depth of the tank or well.

5. What power supply does it require?

The GLT530 operates on a wide voltage range, typically 12V to 36V DC, making it compatible with 

most industrial power systems and battery-powered remote terminals (RTUs).

6. Does it support remote monitoring via smartphone?

When paired with our wireless RTU or gateway, you can monitor the real-time water level data via

 a smartphone app or PC-based cloud platform from anywhere in the world.