How to detect phosphine gas ?

What Is a Phosphine Gas Detector?


A phosphine (PH3) gas detector is an instrument used to detect the concentration of phosphine in the air. These devices have a long-life battery, large screen that displays the PH3 concentration, and a belt clip to connect to clothing. In order to protect users, these gas detectors also have LED, vibration, and buzzer alarms.

Phosphine gas detectors are also known as PH3 monitors, phosphine sniffers, phosphine analyzers, and phosphine gas testers. These names all refer to the same device, a PH3 gas detector.

Can I Smell Phosphine Gas?

 Humans can smell phosphine gas. It is described to have a fishy or garlicky smell that varies with its concentration.

The phosphine odor threshold is between 0.1 and 2 ppm. See here.

However, it is a bad idea to rely on your sense of smell to determine the “concentration” of an aromatic gas like PH3. Over time, the nose becomes desensitized to the odor – this phenomena is called olfactory fatigue.

Is Phosphine Toxic?

Yes it is.

When exposed to phosphine gas, you may experience nausea, fatigue, vomiting, abdominal pain, respiratory illness, cardiac failure, and even death. Avoiding phosphine gas exposure is essential to protect your family and coworkers.

In 2011, a family of six (including two children) was unintentionally exposed to toxic phosphine gas after a fumigation. With no known antidote, the two children unfortunately passed away from heart failure.

How to Detect Phosphine

The PH3 Gas Detector of JXCT accurately displays phosphine levels. With the increase of suction pump, Fixed Miniature phosphine Sensor can also measure phosphine levels in confined Spaces.

Wall-mounted PH3 gas detector

Wall-mounted PH3 gas detector, industrial gas detection sensor, support signal output, to meet the needs of different environments. Wireless transmission, no wiring. Low power consumption and stable performance.

Phosphine Electrochemical Gas Sensor

The analog /TTL type phosphine electrochemical gas sensor module is an intelligent gas detection module independently developed by Jinxun. Small size, easy to carry, high precision, low loss, factory calibration, can be used directly.

methane detector

Explosion-proof combustible gas sensor

Explosion-proof combustible gas sensors, stable performance, sensitive and reliable. With high-precision liquid crystal display, explosion-proof housing, diffusion or pump suction. The combustible gas sensor has the characteristics of flexible use and simple operation.

What Is a Phosphine Gas Detector Used For?

Phosphine gas detector is used in a variety of manufacturing and industrial processes, as listed below. Because PH3 is toxic, it is important to monitor for employee and homeowner safety.

  • PH3 for fumigation: Phosphine is used to control pests, such as insects and rodents, in indoor environments. Stored grains, animal feed, and tobacco can be fumigated with phosphine gas to protect from pests. Proper equipment and employee training is essential to protect human health.
  • PH3 for textile synthesis: Reacting with formaldehyde and HCl, phosphine can be used to create fire retardant fabric.
  • PH3 for electronic manufacturing (semiconductors): Phosphine is used widely within the electronic industry. High quality phosphine is essential in the production of LED lights, solar cells, and as a dopant for semiconductors. The phosphine gas is introduced to silicon wafers to produce conductive semiconductors.

Phosphine sensor parameters

Measuring range 0-20PPM/0-2000PPM
Measurement method Electrochemical sensor
Output mode RS485/ 0-5V/0-10V/4 -20mA
Baud rate 2400/4800/9600
Power consumption ≤0.15W
Pressure range 0.9-1.1atm
Response time ≤15s
Operating temperature -20-50°C (-20-40% continuous)
Dimensions 110* 85* 44mm3
Power supply 12V-24VDC

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