Small/compact and lightweight with low power consumption A flick of a switch provides three different measurement modes With light & flow rate check function Measurement of combustible gases except methane (for methane: GOM-3A) GOM-3AL provides ppm readings for combustible gases

GOM-3A/GOM-3AL Specifications
Target gas	Oxygen	Combustible gas	Combustible gas
GOM-3A			N/A
GOM-3AL		N/A
Measurement range	0-25%	0-100%LEL	0-1000 ppm
Measurement principle	Galvanic cell method	Catalytic combustible combustion-type method
Sampling method	Diaphragm pump
Display	Analog metre (backlit)
Indicating Accuracy	+/- 0.5%O2	5% of full scale
Alarm threshold	18%	20%LEL	200 ppm
Alarm signal	Short, intermittent sound and blinking alarm light	Long intermittent sound and blinking alarm light
Power source	Three size C manganese dry cell batteries for 4 hours of operation (without alarm signal being emitted) Three size C alkaline dry cell batteries for 8 hours of operation (without alarm signal being emitted)
Dimensions	150(W) x 70(D) x 110(H) (mm)
Weight	1.2kg
Explosion proof	Certified by Japan Ministry of Health, Labour and Welfare (Class id3aG3 Certification No.T62340)

One unit for three type of gases Simultaneous measurement of oxygen, combustible gases (non-methane), hydrogen sulphide and carbon monoxide Small / compact and lightweight Low power consumption design Light & flow rate check function Light & flow rate check function

GOMC-3A/GOMH-3A Specifications
Target Gas	Oxygen	Combustible gas	Hydrogen sulphide	Carbon monoxide
GOMC-3A			N/A
GOMH-3A				N/A
Measurement range	0-25%O2	0-100%LEL	0-30 ppm	0-300 ppm
Measurement principle	Galvanic cell method	Combustion contact	Controlled potential electrolysis
Sampling method	Diaphragm pump
Display	Digital LCD (backlit)
Indicating accuracy	+/- 0.5%O2	5% of full scale
Alarm threshold	18%	20%LEL	10 ppm	50 ppm
Alarm signal	Short, intermittent sound and blinking alarm light
Power source	Four size C dry cell batteries for approx. 4 hours of operation (without alarm signal being emitted)
Dimensions	150(W) x 70(D) x 170(H) (mm)
Weight	2kg

One unit for four gases Simultaneous measurement of oxygen, combustible gases (non-methane), hydrogen sulphide and carbon monoxide Small/compact and lightweight Low power consumption design Light & flow rate check function Light & flow rate check function

GOMHC-3A Specifications
Target Gas	Oxygen	Combustible Gas	Hydrogen Sulphide	Carbon Monoxide
GOMHC-3A
Measurement range	0-25%	0-100%LEL	0-30 ppm	0-300 ppm
Measurement principle	Galvanic cell method	Combustion contact method	Controlled potential electrolysis
Sampling method	Diaphragm pump
Display	Digital LCD (backlit)
Indicating accuracy	+/- 0.5%O2	5% of full scale
Alarm threshold	18%	20%LEL	10 ppm	50 ppm
Alarm signal	Short, intermittent sound and blinking alarm light
Power source	Four size C dry cell batteries for approx. 4 hours of operation (without alarm signal being emitted)
Dimensions	150(W) x 70(D) x 170(H) (mm)
Weight	2kg

GOMMH-3A/GOMMC-3A Specifications
Target Gas	Oxygen	Combustible gas	Hydrogen sulphide	Carbon monoxide
GOMMH-3A				N/A
GOMMC-3A			N/A
Measurement range	0-25%	0-100%LEL	0-30 ppm	0-300 ppm
Measurement principle	Galvanic cell method	Combustion contact method	Controlled potential electrolysis
Sampling method	Diaphragm pump
Display	Digital LCD (backlit)
Indicating accuracy	+/- 0.5%O2	5% of full scale
Alarm threshold	18%	20%LEL	10 ppm	50 ppm
Alarm signal	Short, intermittent sound and blinking alarm light
Power source	Four size C dry cell batteries for approx. 4 hours of operation (without alarm signal being emitted)
Dimensions	150(W) x 70(D) x 170(H) (mm)
Weight	2kg