DFRobot Gravity GL-136 Industrial Stainless Steel Submersible Pressure Level Sensor (0-5m) - 4-20mA Output, 5m Cable, IP68

Name: DFRobot Gravity GL-136 Industrial Stainless Steel Submersible Pressure Level Sensor (0-5m) - 4-20mA Output, 5m Cable, IP68
Brand: DFRobot
SKU: SENS-1986
Price: 6299.00 INR
Availability: OutOfStock

₹6,299.00 (Inclusive of all taxes)

Out of Stock

The DFRobot Gravity GL-136 is an industrial-grade, IP68-rated stainless steel submersible pressure sensor designed for precise liquid level measurement up to 5 meters. It provides a standard 4-20mA analog current output compatible with PLCs, industrial controllers, and data acquisition systems operating on a 12-36V DC supply.

Features

Industrial 4-20mA analog current output for robust signal transmission over long distances.
IP68 waterproof 304/316L stainless steel housing for corrosion resistance in harsh liquid environments.
High-accuracy MEMS piezoresistive sensing with ±0.5% FS precision and built-in temperature compensation.
5-meter integrated cable and 0-5m H2O measurement range for tank, reservoir, and groundwater monitoring.
Wide 12-36V DC operating voltage and 300% FS overload capacity for durable industrial operation.

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Description

The GL-136 sensor utilizes a high-performance MEMS piezoresistive sensing chip housed within a 316L stainless steel diaphragm to measure hydrostatic pressure. Advanced on-chip temperature compensation ensures stable and accurate output across its full -20°C to +70°C operating range, converting pressure into a linear 4-20mA signal.

Engineered for continuous submersion, the IP68-rated 304 stainless steel body provides exceptional corrosion resistance against water, oil, sewage, and various industrial liquids. Its robust construction supports up to 100 million pressure cycles, making it suitable for long-term installation in water treatment plants, irrigation systems, refineries, and industrial process tanks.

Key Features

Industrial 4-20mA two-wire current loop output for noise-immune, long-distance signal transmission.
Dual-layer 304 (housing) and 316L (diaphragm) stainless steel construction for maximum corrosion and chemical resistance.
High-precision MEMS piezoresistive sensing element with ±0.5% full-scale accuracy.
Integrated temperature compensation circuit for stable performance across -20°C to +70°C.
IP68 submersible rating for continuous operation in deep liquid applications.
300% full-scale overload capacity and 100 million cycle durability for harsh industrial environments.
5-meter permanently attached cable for flexible installation in tanks, wells, and reservoirs.
Wide 12-36V DC supply voltage compatibility with standard industrial power sources.

Applications

Continuous level monitoring in industrial water storage tanks and reservoirs.
Groundwater level measurement in monitoring wells and boreholes.
Process tank level control in chemical, pharmaceutical, and refinery operations.
Liquid level sensing in wastewater treatment plants and sewage lift stations.
Irrigation system reservoir and channel water level management.

Technical Specifications

Model Number	GL-136
Sensor Type	MEMS Piezoresistive Submersible Level Sensor
Measuring Range	0 to 5 m H2O
Output Signal	4-20mA Analog Current (2-wire)
Operating Voltage	12-36 VDC
Accuracy	±0.5% Full Scale (FS)
Protection Rating	IP68
Cable Length	5 m
Operating Temperature	-20°C to +70°C
Overload Capacity	300% FS
Diaphragm Material	316L Stainless Steel
Housing Material	304 Stainless Steel
Pressure Type	Gauge
Service Life	100 Million Pressure Cycles
Weight	0.577 kg

Frequently Asked Questions

What is the operating voltage range for the GL-136 sensor?

The GL-136 operates on a wide 12 to 36 Volts DC supply, which is standard for industrial 4-20mA two-wire loop-powered transmitters. This range ensures compatibility with common PLC power supplies and industrial DC sources without requiring an external signal conditioner for power.

How do I interface the 4-20mA output with a microcontroller like an Arduino?

To connect the 4-20mA output to a microcontroller's analog input, you must use a current-to-voltage converter, such as the module included in the package. This converter places a precision resistor in the loop, translating the 4-20mA signal into a proportional 0-3.3V or 5V analog voltage that can be read directly by the ADC pin of an Arduino, Raspberry Pi, or other logic device.

What liquids is this IP68 stainless steel sensor compatible with?

The sensor is constructed with 304 stainless steel housing and a 316L stainless steel diaphragm, offering excellent corrosion resistance. It is suitable for continuous submersion in water, oils, non-aggressive sewage, and many other industrial liquids. It is not recommended for use with highly concentrated acids, strong alkalis, or solvents that aggressively attack stainless steel.

What is the measurement accuracy and how is it affected by temperature?

The sensor provides a typical accuracy of ±0.5% of its full-scale range (5m). This high precision is maintained across its operating temperature range of -20°C to +70°C due to the integrated temperature compensation circuit built into the MEMS sensing chip, which minimizes thermal drift and ensures stable output.

Can the 5-meter cable be extended for deeper installations?

Yes, the attached 5-meter cable can be spliced and extended using waterproof junction boxes and appropriate cabling. For optimal signal integrity, especially when extending over very long distances, use shielded cable and ensure all connections are sealed to maintain the IP68 rating. The 4-20mA current loop signal is inherently resistant to noise and voltage drop over long runs.

Package Includes

1 x DFRobot Gravity GL-136 Industrial Stainless Steel Submersible Pressure Level Sensor (0-5m)
1 x Analog Current to Voltage Converter Module (4-20mA to 0-3.3V/5V)
1 x 3-Pin Analog Sensor Connection Cable