Electrochemical PH3 gas sensor – Phosphine gas sensor


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Electrochemical PH3 gas sensor Introduction

Electrochemical PH3 gas sensor is a PH3 sensor that uses electrochemical detection technology to detect phosphine gas concentration. gas sensor adopts high-performance chip with three-electrode structure, which greatly improves the performance of the product. The electrochemical phosphine sensor has variable gain amplifier circuit and strong anti-interference ability. Suitable for gas detection, industrial gas, scientific experiment, product production and other fields of phosphine gas concentration detection.

Electrochemical PH3 gas sensor

Electrochemical PH3 gas sensor Features

1. The whole machine is small in size, light in weight, waterproof, explosion-proof and shock-proof;

2. High precision, high resolution and fast response;

3. The upper and lower limits of the alarm can be set arbitrarily, with zero and target calibration functions, built-in temperature compensation, and easy maintenance;

4. Imported electrochemical sensor, with good anti-interference performance and long service life;

5. Adopt advanced microprocessor technology, fast response speed, high measurement accuracy, good stability and repeatability;

6. Fully automatic software calibration, the sensor has a target point calibration function of up to 6 levels to ensure measurement accuracy and linearity, and has a data recovery function;

7. High-concentration gas exposure automatic protection function;


Detection gas: phosphine

Product Model: JEC-PH3

PH3 range: 0-20ppm(default)/0-2000ppm(optional)

PH3 resolution: 0.1ppm

Response time: T90≤15s

Detection principle: electrochemistry

PH3 accuracy: ≤ reading soil 3% (25°C)

Operating voltage: 5V 2%

Output signal: TTL/ analog voltage/analog current /RS485/RS232

Life expectancy: 1 year

Operating environment: -10~50°C 15%~90%RH Atm 10%

Cross interference: CO, CO2, SO2, NO2, CH4, H2S, etc

gas sensor

Product application scope

It is widely used in the production and installation of portable and fixed gas detection equipment, as well as various gas detection occasions and equipment.


What is phosphine gas?

Phosphine, an inorganic compound with chemical formula PH3, is a colorless, highly toxic and flammable liquefied compressed gas stored in cylinders. Pure phosphine gas IS colorLESS and odorLESS, but when phosphine is produced from METAL phosphines it often smells of acetylene or garlic or rotten fish. If encountering trace hydrides of other phosphorus such as eophosphine, it will cause spontaneous combustion. Inhalation of phosphine can affect the heart, respiratory system, kidneys, stomach, nervous system and liver.

What is phosphine gas sensor?

Phosphine sensor is suitable for all kinds of environment and special environment in the volatile organic phosphine gas concentration and leakage, online detection and field sound and light report The instrument adopts imported electrochemical sensor and microcontroller technology, which has the advantages of stable signal, high precision and good repeatability. The explosion-proof wiring mode is suitable for all kinds of dangerous places.

What are the hazards of phosphine gas?

Hazard 1: Inhalation of phosphine can affect the heart, respiratory system, kidneys, stomach, nervous system and liver. Any excessive exposure to phosphine and its by-products requires immediate medical attention.

Hazard two: phosphine is a highly toxic substance, which is mainly inhaled through the respiratory tract. Phosphine entering the body is distributed to various organs and tissues of the body through the blood, with the highest content in liver, kidney and spleen. Phosphine is metabolically broken down in the body and eventually excreted in the urine as inorganic phosphorus and phosphate. A small amount of phosphine is exhaled through the lungs in its original form.

Harm three: The toxic effect of phosphine is mainly to damage the central nervous system and liver, kidney, heart and other parenchymal organs.

Hazard four: The characteristic of phosphine poisoning is that it does not stimulate the respiratory mucosa under the condition of inhalation and directly lead to acute poisoning death.

Hazard five: long-term exposure to low concentration phosphine can lead to dizziness, headache, insomnia, weakness, nausea, loss of appetite, dry nose, hypoolfaction and other symptoms.

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