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Tin Dioxide Semiconductor Gas Sensor for Ammonia Detection - SP-53B-00

? Target gas: Ammonia
? 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: 10k? to 100 k?
? Industrial gas leak detector

Model Number: SP-53B-00
Data Sheet:

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Product Specification

SP-53B-00 Ammonia Sensor NH3 Sensor Description
The SP-53B is a tin dioxide semiconductor gas sensor which has a good sensitivity to low concentration ranges of ammonia with improved response speed compared with conventional models.

SP-53B-00 Ammonia Sensor NH3 Sensor Application
? Industrial gas leak detector

SP-53B-00 Ammonia Sensor NH3 Sensor 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	40 ? ± 2 ?	at room temperature
P_H	Heater power consumption	400mW (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-53B-00
Symbol	Parameter	Specification	Conditions etc.
R_S	Sensor resistance	10k? to 100 k?	At 50 ppm of ammonia/air
β	Ratio of sensor resistance	0.40 to 0.55	Rs at 150 ppm of ammonia Rs at 50 ppm of ammonia
Standard Test Conditions:		Temp: 20°C ± 2°C Humidity:65% ± 5% (in clean air)	V_C : 5.0 V ± 1% V_H : 5.0 V ± 1% R_L : 10 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