Gas Sensor Modules

Specifications

Gas Type	Model	Sensor	Range	Units	Resolution	Response Sensor		Operating Range
						Time (1)	Life (2)	oF	oC	RH
Combustibles	4101-02	Catalytic	0-100	%LEL	+/-3% F.S.	(3)	3 Yrs	-40 to 167	-40 to 75	10	- 95%
Oxygen	4101-03EL EC		0-25	% Vol +/-0.1%		<10 sec.	2 Yr	5 to 122	-15 to 50	5 - 99%
Carbon Monoxide	4101-04	EC	0-500	PPM	1.0 PPM	<25 sec	2 Yrs	-4 to 122	-20 to 50	15 – 90%
Hydrogen Sulfide	4101-05	EC	0-100	PPM	0.1 PPM	<30 sec	2 Yrs	-40 to 122	-40 to 50	15 – 90%
Chlorine	4101-06	EC	0-10	PPM	0.1 PPM	<60 sec	2 Yrs	-4 to 122	-20 to 50	15 – 90%
Sulfur Dioxide	4101-10	EC	0-100	PPM	0.5 PPM	<20 sec	2 Yrs	-4 to 122	-20 to 50	15 – 90%
Nitrogen Dioxide	4101-12	EC	0-20	PPM	0.2 PPM	<35 sec	2 Yrs	-4 to 122	-20 to 50	15 – 90%
Carbon Monoxide 4	4101-13	EC	0-1000	PPM	0.5 PPM	<35 sec	2 Yrs	-4 to 122	-20 to 50	15 – 90%
Carbon Monoxide	4101-16	EC	0-2000	PPM	0.1 PPM	<35 sec	2 Yrs	-4 to 122	-20 to 50	15 – 90%
Nitric Oxide	4101-19	EC	0-20	PPM	0.5 PPM	<15 sec	3 Yrs	-4 to 122	-20 to 50	15 – 90%
Hydrogen Chloride	4101-21	EC	0-20	PPM	0.1 PPM	<100 sec	2 Yrs	-4 to 122	-20 to 50	15 – 90%
Hydrogen Cyanide	4101-22	EC	0-20	PPM	0.1 PPM	<70 sec	2 Yrs	-4 to 122	-20 to 50	15 – 90%
Ammonia	4101-25	EC	0-50	PPM	1.0 PPM	<30 sec	(5)	14 to 113	-10 to 45	20 – 95%
Hydrogen Fluoride	4101-26	EC	0-10	PPM	1.0 PPM	<30 sec	(5)	14 to 113	-10 to 45	20 – 95%
Ethylene Oxide	4101-27	EC	0-20	PPM	0.1 PPM	<90 sec	2 Yrs	-4 to 122	-20 to 50	15 – 90%

Notes: (1) Response time to 90% full signal value for applied concentration

(2)Sensor life typical for use at standard temperature and pressure with occasional exposure to gas of interest

(3)Step to 50% LEL within 10 seconds. Recovery to 10% LEL within 30 seconds

(4)Hydrogen tolerent

(5)Diffusion via membrane. Requires electrolyte and membrane replacement every 6 months.

Electrical Data		Construction
Loop Type	3 wire	Modules	Dimensions	Weight
Loop Resistance	800 Ohm with 28VDC	4101-02	H: 7.5", D: 4.0", W: 4.0"	2.0 lb
	400 Ohms at 21 VDC (4101-02)		(21.6 x 10.2 x 10.2 cm)	(0.9 Kg)
Input Voltage DC	14-30 VDC (20-30VDC 4101-02)	4101-03EL	H: 8.5", D: 4.0", W: 4.0"	2.1 lb
Input Current	40 mA (80 mA 4101-02)		(21.6 x 10.2 x 10.2 cm)	(1.0 Kg)
Input Power Max	1.4W (2.3W 4101-02)	4101-04-27	H: 8.0", D: 4.5", W: 4.0"	2.7 lb
Signal Output	4-20 mA DC linear (trouble 0 mA)		(20.3 x 15.2 x 15.2 cm)	(1.3 Kg)
Operating Pressure	+10% (variation from ambient)	4101-25/26	H: 10.2", D: 6.0", W: 6.0"	2.7 lb
			(25.9 x 15.2 x 15.2 cm)	(1.3 Kg)

Cross Sensitivity Data

	Model	Gas			Reading	from 100 PPM of interfering gas
	Number	type	CO	H2S	Cl2	H2	SO2	NO2	NO	HCl	HCN	C2H4
	Number	type	CO	H2S	Cl2	H2	SO2	NO2	NO	HCl	HCN	C2H4
	4101-04	CO	100	5	0	<20	0	0	6	0	0	<50
4101-05		H2S	<2	100	-20	<0.1	<15	-15	0	0	0	0
4101-06		Cl2	0	<-10	100	0	0	105	0	0	0	0
4101-10		SO2	<1	0	-40	0	100	-100	0	0	15	0
4101-12		NO2	0	-20	90	0	0	100	0	0	-3	0
4101-13		CO	100	350	0	<60	60	-60	25	0	0	<75
4101-16		CO	100	0	0	0	0	0	0	0	0	35
4101-19		NO	0	35	0	0	5	25	100	15	0	0
4101-21		HCl	0	75	-10	0	35	-2	0	100	-8	0
4101-22		HCN	<0.5		-50	0	160	-190	-5		100	<1
4101-27		C2H4O	Ethanol		55
		(ETO)	Toluene		20
		(ETO)	Toluene		20
			Methyl-ethyl-ketone		10
			Carbon Monoxide		40	4101-02 Combustible Gas Sensor
						4101-02 Combustible Gas Sensor
							is FM Approved

05/04

Sierra Monitor Corp. 1991 Tarob Ct., Milpitas, CA 95035, USA, 408-262-6611, 800-727-4377, FAX: 408-262-9042

Web Site: http://www.sierramonitor.com E-Mail: sierra@sierramonitor.com

4101 specifications

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Sierra Monitor Corporation 4101 manual Gas Sensor Modules, Cross Sensitivity Data

Models: 4101