The MP511D Freon gas sensor uses a multilayer thick film manufacturing process to fabricate heating and measuring electrodes and a metal oxide semiconductor gas-sensitive layer on a miniature ceramic substrate, and encapsulate it in a metal casing. When the detected gas exists in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, the higher the conductivity of the sensor. This change in conductivity is converted into an output signal corresponding to the gas concentration through the circuit. The product has good anti-interference ability against common gases such as alcohol and acetic acid in usage scenarios.

Application

Used for leak detection of refrigerants in air conditioning and refrigeration systems

Features

High selectivity, fast response, good anti-interference, long lifespan, good stability
Can detect kinds of refrigerant gases R134a, R454b, R290.

Specifications

Model			MP511D
Sensor Type			Semiconductor flat surfaced sensor
Standard Encapsulation			Metal Cap
Detection Gas			Refrigerant gas
Detection range			200～10000ppm
Standard circuit	Loop voltage	VC	5.0V±0.1V DC
	Heating voltage	VH	5.0V±0.1V DC
	Load resistance	RL	Adjustable
sensor features in standard test condition	Heating consumption	PH	≤350mW
	Surface resistance	RS	0.5～10KΩ(in 2000ppm R290)
	Sensitivity	S	0.4~0.6 (R290) Rs(in 3000ppm)/Rs(in 1000ppm)
Standard condition of test	Temperature, humidity		25℃±2℃；55%±5%RH
	Standard test circuit		Vc:5.0V±0.1V； VH:5.0V±0.1V
	Warm-up time		7 days

* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.

1 PC MP511D Refrigerant Gas Sensor