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Tin Dioxide Semiconductor Gas Sensor for Solvents Detection - SP-31-00

? Target gas: Alcohol/Toluene
? Heater voltage: 5.0 V ± 4%
? Circuit voltage: 5.0 V ± 4%
? Operating temperature: -10°C to 60°C
? Storage temperature: -20°C to 70°C
? Relative humidity: Less than 95% RH
? Sensor resistance: 0.5 k? to 5.0 k?
? Industrial gas leak detector

Model Number: SP-31-00
Data Sheet:

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Product Specification

SP-31-00 Gas Sensor for Solvents Detection Description
The SP-31 is a tin di-oxide semiconductor gas sensor which has a high sensitivity to solvents such as alcohol, toluene.

SP-31-00 Gas Sensor for Solvents Detection Application
? Industrial gas leak detector

SP-31-00 Gas Sensor for Solvents Detection Specifications

Standard Operating conditions
Symbol	Parameter	Specification	Conditions etc.
V_H	Heater voltage	5.0 V ± 4 %	AC or DC
V_C	Circuit voltage	5.0 V ± 4 %	AC or DC
R_L	Load resistance	Variable	P_S < 15 mW
R_H	Heater resistance	56 ? ± 2 ?	at room temperature
P_H	Heater power consumption	315 mW (Typical value)	P_H = V_H² / R_H
P_S	Power dissipation of sensing element	Less than 15 mW	P_S =(V_C - V_RL)²/R_S
Environmental conditions
Symbol	Parameter	Specification	Conditions etc.
Tao	Operating temperature	-10°C to 60°C	Recommended range
Tas	Storage temperature	-20°C to 70°C
RH	Relative humidity	Less than 95% RH
(O2)	Oxygen concentration	21% ± 1% (Standard condition)	Absolute minimum level: more than 18%
(O2)	Oxygen concentration	The sensitivity characteristics are influenced by the variation in oxygen concentration.
Sensitivity characteristics
Model	SP-31-00
Symbol	Parameter	Specification	Conditions etc.
R_S	Sensor resistance	0.5 k? to 5.0 k?	At 300 ppm of ethanol/air
β	Sensitivity slope	0.15 to 0.35	Rs at 300 ppm of ethanol Rs at 50 ppm of ethanol
Standard Test Conditions:		Temp: 20°C ± 2°C Humidity:65% ± 5% (in clean air)	VC : 10.0 V ± 0.1% VH : 5.0 V ± 0.05% RL : 3.9 k? ± 5%
Standard Test Conditions:		Pre-heating time: more than 48 hours
Mechanical characteristics
Items	Conditions		Specifications
Vibration	Frequency: Vertical amplitude: Duration:	100 cpm 4 mm 1 hour	Should satisfy the specifications shown in the sensitivity characteristics.
Shock	Acceleration: Number of impacts:	100 G 5 times