4-Series PH3-1000S Sensor

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Product Description

This Phosphine sensor is designed specifically for fumigation applications. It has a fast response time T90 that is less than 30 seconds. It can be used as a pin-to-pin replacement for the standard 4-series electrochemical Phosphine sensors made by other manufacturers.

Performance Characteristics

Nominal Range	0 ~ 1,000 ppm
Maximum Overload	2,000 ppm
Sensitivity (20℃)	0.09 ± 0.02 μA/ppm
Response Time (T90)	≤ 30 s
Zero Signal (20℃）	< ±0.2 μA
Baseline Shift (-40℃ ~ 50℃)	< 2 ppm
Resolution	0.5 ppm
Linearity	Linear up to 1,000 ppm
Bias Voltage	0 mV

 

Product Dimensions

Environmental

Temperature Range	-40℃ ~ 50℃
Pressure Range	1 ± 0.1 atm
Humidity Range	15% ~ 90%RH non-condensing

Life Time

Long Time Output Drift	< 2% signal/month
Recommended Storage Temp	10℃ ~ 30℃
Expected Operating Life	2 years in clean air
Storage Life	6 months in original packaging
Warranty	12 months

Intrinsic Safety Data

Max. Current at 2,000ppm PH3	< 0.5 mA
Max. O/C Voltage	1.3 V
Max. S/C Current	< 1.0 A

Physical Characteristics

Housing Material	ABS
Weight (Nominal)	5 g
Orientation	None

Installation

Output signals from the sensor pins are different. Inappropriate use of the pins in product design will affect the sensor functionality. Exposure to high concentrations of solvent vapors should be avoided under any condition. Mechanical overstress may cause deformation or cracks of the plastic enclosure of the sensor. If the sensor is used in extreme environmental conditions, please contact us for more details.

Cross-Sensitivity Data

Gas	Concentration (ppm)	Output Signal (ppm PH3 equivalent)
Sulfur Dioxide	5	1.9
Ammonia	50	-0.7
Hydrogen Sulfide	15	18.0
Carbon Monoxide	100	14.7
Hydrogen	100	10.9

Note: The cross sensitivities include but not limited to the above gases. It may also respond to other gases. The data in the table above may vary from different batches of sensors and the changes of test environment. Calibration using the gases that have the cross sensitivities to this sensor is not recommended.

Temperature Data

Safety Note

This sensor is designed to be used in certain instruments for life critical applications. To ensure the sensor functions per its specifications inside the instrument, it is required to read the instrument user's guide carefully and comply with the calibration procedures by using certified target calibration gas before each use. Failure to do so may cause serious injury and fatality. Please do not open the sensor plastic enclosure because the electrolyte and other chemicals stored inside are harmful.

It is highly recommended for customers to validate the sensor performance using this document as a reference for their product designs or applications.