Intelligent Gas Meter

Basic Model (NB-Type) LNG: NB 1、1.6、2.5、4、6、10、16
LPG: NLB 1、1.6、2.5、4、6、10

Intelligent gas meter upgrades N-type conventional measuring mechanism with a safety function to prevent the anticipated incidents and accidents caused by the gas.
Safety function consists of the pressure sensor, seismic sensor, emergency shut off valve and pre-programmed LSI controller. Where LSI controller detects an abnormal condition on gas flow or receives a remote signal such as gas detector, the meter shall automatically shut off or alarm.
Besides, the shut off log can be collected by the parameter setter (GB-STFZ1).

[Specification]

Fluid	LNG, LPG
Accuracy	±1.5% (0.05Qmax ~ 0.1Qmax, ±3%)
Maximum Operating Flow Rate	1, 1.6, 2.5, 4, 6, 10, 16 (m³/h)
Maximum Operating Pressure	3.5kPa
Surrounding Temperature	-20°C ~ 60°C
Dai Meter	15mm ~ 40mm
Weight	2.9kg ~ 11kg
Option	Built-in Pulse Transmitter

[Safety Functions]

Action	Cause
Shutdown by Flow Condition	In excess of preset amount flow In excess of preset individual flow Time over of preset continuous usage Leakage confirmation when restored
Shutdown by Seismic	Seismic sensor activated
Shutdown by Pressure	Less supply pressure
Shutdown by Other Causes	Command from outside such as gas detector Manual Test Low voltage of battery detected
Alarming	Minute amount of leakage from in-house piping suspected

Advanced Model (NS-Type) LNG: NS 1、1.6、2.5、4、6、10、16
LPG: NLS 1、1.6、2.5、4、6、10、16

Teleccmmunication function is added to the basic model.
Automatic meter reading via telecom network or the remote reading by wireless handy terminal unit are available.

Compact Model (J-Type) JB1, 1.6, 2.5, 4, 6 (Basic Model)
JS1, 1.6, 2.5, 4, 6 (Advanced Model)

J-Type meter is compactly designed to handle Qmax. between 1m³ to 6 m³ by one size enclosure.

[Physical comparison between NB-Type and JB-Type]

		NB2.5	JB6	NB6
Maximum Flow Rate		2.5m³/h	6m³/h	6m³/h
External Size	Height	280mm	293mm	324mm
	Width	174mm	174mm	195mm
	Depth	138mm	150mm	156mm
Weight		3.2kg	3.1kg	4.4kg