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GQY(A) Mining Explosion-proof Level & Temperature Sensor
GQY(A) Mining Explosion-proof Level & Temperature Sensor
The GQY mining explosion-proof level and temperature sensor combines a magnetic position sensor and a temperature sensor for dual functionality. It provides (4-20) mA current signal output for level and temperature measurements (or Pt100 temperature output). It is suitable for use in monitoring, adjusting, and controlling systems, enhancing the automation and measurement capabilities of mining equipment. The sensor is housed in a stainless steel explosion-proof enclosure, compliant with GB/T3836 standards (Exdb Ⅰ Mb).
Mining Level Instruments

GQY(A) Mining Explosion-proof Level & Temperature Sensor

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Product Overview

The GQY(A) mining explosion-proof level and temperature sensor adopts a combined design of a magnetic position sensor and a temperature sensor, enabling simultaneous measurement of liquid level and temperature with a wide range of applications.

The instrument is equipped with a high-precision signal conversion circuit that converts the measured level and temperature parameters into two independent standard (4–20) mA current outputs. The temperature signal can also be directly output as a Pt100 resistance signal, making it convenient for use with display, recording, and control instruments to achieve system monitoring, regulation, and control.

The instrument adopts a stainless-steel flameproof enclosure and is designed and manufactured in strict accordance with GB/T 3836 and related standards. The explosion-proof marking is Ex db I Mb. This product is widely used for liquid level and temperature monitoring in underground and surface coal mining equipment, effectively improving the automation and control level of mining systems.


Key Technical Specifications

Item

Technical Parameters

Accuracy

Transmitter output: Class 1 (standard range); Temperature Pt100 signal output: Class B

Power Supply

24 VDC (standard); maximum supply voltage range: 12–36 VDC (when operating below 12 V, the current output load resistance shall not exceed 100 Ω).

Signal Output

Level: (4–20) mA DC current signal; Temperature: (4–20) mA DC current signal or Pt100 output (only one output option can be connected at a time)

Maximum Operating Current

<22mA

Operating Temperature

(-25~70)℃

Explosion-proof Marking

Ex db I Mb

Protection Rating

IP54 (standard type), IP65 (special type), compliant with GB/T 4208

Vibration Resistance

<50 m/s²

Housing Material

Stainless steel 304

Explosion-proof Structural Features

The enclosure is made of stainless steel with a flameproof structure. The cable entry device complies with the Ex cable entry requirements specified in the appendix of GB/T 3836.1. Mining cables with an outer diameter of (8–12) mm must be used.

Installation Method

G1 1/2” or M48 × 2 male thread (standard threaded installation); DN50 (standard flange installation). Other mounting types are available upon request and must be specified when ordering.

Weight

1.8kg


Model and Specifications

Model

Measuring Range

Signal Output

Maximum Working Pressure

GQY2900/80(A)

Level: (300–2900) mm,  Temperature: (-20 to 80) °C, specified by the user.

Dual current outputs: (4–20) mA DC or (4–20) mA current output + Pt100 resistance output.

1.6MPa







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