High-performance, widespread, diaphragm-type
smart meter NX-U ™

Built-in pressure
sensor contributes tostable supply

Automatic recovery function supports
early recovery in the event of anearthquake

U-bus communication
reduces travel costs

L o a d s u r v e y f u n c t i on t os u p p o r t en e rg yd e r eg u l a t i o n

Quick restart function after an earthquake
When a tremor equivalent to an intensity 5 or higher
is detected, gas is shut off and shut off. The system
automatically checks for leaks, and if there are no gas
leaks, gas can be used.

Earth-friendly meter
Reusing meter cases can contribute to thereduction of industrial waste.

Reduces travel costs

Responding to energy deregulation

The ability to remotely perform meter reading andopen/close valve operations eliminates the need foron-site visits and streamlines operations.

Services can be implemented to provide gas users
with new rate menus and usage data.

Azbil Kimmon Co., Ltd

NX-U" and "Cloud Service" connect businesses and users
City gas companies
都市ガス事業者様Management System

Alarm Management

Meter data-Demand forecasting -Rate planning -Pipe network analysis -Damage etc.

Other data

Data linkage
Weather
Administrative
Statistics
ConsumerIndicated value, Pressure value

Indicated value. Pressure value

Indicated value, Pressure value

Dynamics

U bus

Sensor data
Analysis tools

Cloud service

U bus

Com. network

open/close

Indicated value, Pressure value

U bus

U bus

Gas users
Security function

Main Specifications
NX-U4

ModelNX-U6

Spec

NX-U

Reason for action±1.5(0.05Qmax～0.1Qmax=±3%）

Accuracy

4㎥/hMax. op. flow

6㎥/h

3.5kPaTotal flow over3

Individual max flow3Continuous use time
M34×1.5(20A)

shutdown

130mm

Shutoff

W36.9 T h r e a d 11(20A)
distance9999.999㎥

Min. scale

0.2L

OperatingShow previousevent

Seismic Input

1

Pressure drop input

1

Flow detection method
Pressure detection method
shut-off valve
Seismic disruption automatic

Left Inlet

Max indication

Possible traffic

Flow detect. during

Direction of flow

Totalizer

2

exceeded

W36.3 T h r e a d 11.5(20A)

Cap center-20℃～+60℃

environment t°

Pressure rise input

1

External signal input

1

Leakage during restart3

Center equipment

1Security Display

Alarm orInterrupt

Battery voltage drop

4Internal leak detection←Pressure sensor

pressure switch

Motor valves (bidirectional)

Solenoid type (one-way valve)

Yes

×

Alarm/event: Pattern indication by blinking LED
LED (1 light)

when no gas flow continues for 1leakage alarm

hour, and inner pipe leakage is←←determined for 30 consecutive days.
Internal pipe leakage re-notif.

3

Yes

No

Pressure rise cutoff

Yes

NoPerm. battery undervolt. shutdown

Yes←

shutoff history

Yes (5 times)←Alarm History

Yes (included in shutdown history)

Restart leak confirmation method

Flow detect. method + pressure
detect. method,alarm※ LED Pattern Display
Pattern 2

Pattern 1

JI A 認証

secondExample of seal position

seconds

15
6

secondssOn

On

OffOffOUT
Lid←reed switch

Re-notification of internal pipe

4

test switch

Check195
130←

No inner pipe leakage is determined

DrawingINmechanicalLess than 1L/h (actual perf. value)

Red LED

Security section

4.4kg

JP Gas ex. ofVerif. Paper Loc.

NS□□restartsignalWeight

NX-U

overpressure

Connection

Model※ LED Pattern Display

rateMax. op.

Comparison of "NX-U" and conventional products

Pattern 360

seconds

Pattern 4OnOff

Confirmation time 3 min.

Confirmation time 2 min.

seconds

seconds

OnOff←
Flow detection method

Load survey

Yes

Yes (only for increased flow pulse)

Snap measurement (pressure value atYesNo324

set time)demand usage

Yes

No

communication format

U bus

Line A (8-bit), Line B (for HA board)

communication frequency
Example of rated signal
position※ External dimensions and face-to face dimensions are the same as those of conventional
diaphragm meters.

. NX-U is a trademark of Azbil Kimmon. The information in this catalog is current as of February 2022. These specifications are subject to change without noticefor performance improvement.

Once a day

Line A: once every 7 days (500 times in 10 years)
Line B: 3 times a day (10,000 times in 10 years)