GAS products

TOYOKEIKI – ETK / EBTK series Ultrasonic Smart Gas meter with Safety Functions

  • Multi-function Ultrasonic gas meter as a SAFETY DEVICE
  • Capacity : 2.5m3/h – 16m3/h
  • All functions in Compact size / Light weight body
  • Safety function including Seismic Shut-off
  • Remote monitoring and control via network
  • Interlocking function with external devices
  • Accurate and stable measurement of gas flow rate by ultrasonic waves

 

 

 

Gas Meter as a Safety Device – Japan Technology

Why has Japan continued to develop advanced technology?

Part of the answer seems to be the geographical conditions of Japan.

Japan is a small island nation surrounded by the sea and has four different climates during the year.
In very hot summers, typhoons often come from the south. In the cold winter, it snows, and houses can be covered with snow and roads can freeze.
In addition, due to special geographical conditions, earthquakes often occur, and sometimes tsunami damage can occur.

In order to live in such an environment, Japanese people had to devise various ways to coexist with nature.

Moreover, because it is a small country with scarce natural resources, there was no choice but to support the economy in industries such as processing and manufacturing.

Against this background, manufacturing that can withstand the harsh environment has always been an indispensable requirement in all industrial fields, including architecture and urban development.

All types of TOYOKEIKI’s gas meters are accurate and durable to measure accurate numbers in all climatic conditions. Among them, the computer-controlled ultrasonic meter has various functions to analyze and execute all the data read by the sensor as well as to accurately measure the gas flow rate.

 

Multi-functional ultrasonic gas meter as a SAFETY DEVICE

 

Body size comparison of Ultrasonic meter

TOYOKEIKI’s ultrasonic gas meters are equipped with various functions so that gas companies can supply gas more efficiently and users can use gas with better peace of mind.

This is a compact size high quality gas meter with lots of control functions with network including centralized monitoring and remote control.

And at the same time, it is a Multi-functional safety device that responds to various situations, including a seismic function, so that gas can be operated safely in the event of any trouble.

There is no need to install a seismic circuit breaker separately. This compact meter housing has all the functions, so it is a product that we would like to propose to users who place importance on safety such as condominiums and shopping malls.

 

LPG safety device and the number of LPG accidents – Cases in Japan

LPG accidents dramatically decreased by installation of Smart Meter and Safety Devices

The fuel conversion from coal to LPG has been a great boost to the promotion of Japanese industry in the 1960s.

On the other hand, however, as LPG became more widespread, the number of serious accidents also increased. At its peak in 1979, there were as many as 793 accidents to do with LPG.

Bellow is the record of LPG accidents and safety device installation rate in Japan.

In Japan, the government started taking the initiative in promoting the introduction of safety devices in order to prevent LPG accidents.

And in 1987, Smart Meter with safety functions was developed as new safety device for LPG.

In 1996, 99.1% of LPG equipment was equipped with security equipment, which has dramatically reduced LPG accidents.

Safety Device Decreases LPG accidents

 

Safety Functions of Ultrasonic Gas Meter – ETK series

Seismic shut-off function

Gas leak detection shut-off function

Other shut-off function

External input / output interlocking function

Gas leak detection alert function

Pressure detection alert function

 

SEISMIC SHUT-OFF
Seismic shut-off function When an earthquake with a seismic intensity of 5 or higher is detected while using gas, the meter shuts off the gas and prevents gas accidents.
GAS LEAK DETECTION SHUT-OFF

Total flow rate detection shut-off function

Caes: Gas valve opened accidentally / Damaged or dropped rubber hose
          The meter shuts off the gas when the total value set in advance is exceeded.
Increased flow rate detection shut-off function

Caes: Rapid and unusual increase in gas consumption / Damaged or  dropped rubber hose
             The meter shuts off the gas when the total value set in advance is exceeded.

Usage time detection shut-off function
  (**2.5m3/h / 4.0m3/h)
Caes: In case of forgetting to turn off gas appliances
          The meter shuts off the gas when the maximum time set in advance is exceeded.
OTHER SHUT-OFF
Pressure drop detection shut-off function Caes: Prevents gas accidents as secondary disaster after earthquake
          The meter shuts off the gas when pressure in the meter drops lower than 0.6kPa.
             Cases such as piping damages by earthquake and etc.
EXTERNAL INPUT / OUTPUT INTERLOCKING FUNCTION (** refer below)
Gas leak alarm activation shut-off function Cases: When the gas alarm connected to the external terminal is activated
          The meter shuts off the gas by receiving signal from external gas alarm.
OTHER ALERT FUNCTION (NON SHUT-OFF) 
Minor leak detection alert by flow rate
Caes: Alert function to report minor leakage after the meter
Minor leak detection alert by pressure drop Caes: Alert function to report minor leakage between pressure regulator and the furnace
Abnormal regulated pressure detection alert Caes: Alert function to report error with pressure regulator
          Monitoring how often the regulated pressure goes out of range between 2.3-3.3kPa.
          The meter displays alert if it exceeds 15 days out of 30 days. 
Abnormal blockade pressure detection alert Caes: Alert function to report error with pressure while the gas is not flowing
          Monitoring how blockade pressure of regulator after usage of gas
          and count how often it exceeds 3.5kPa.
          The meter displays alert if it exceeds 15 days out of 30 days. 

 

External terminal and Ultrasonic meter

**External input / output terminal

Other than gas leak alarm terminal, TOYOKEIKI ultrasonic meter has extra terminals for input / output. Also available for LPWA network connection.

 

ExternalDeviceInterlocking_GasDetector

 

Features

Compact and light weight

The ETK series is much lighter and more compact than conventional diaphragm gas meters. Recommended for places with limited installation space.
Light weight makes installation work very easy.

Developed based on many yeas experience

The ETK series was developed based on the safety function of the diaphram type smart meter that has been used in Japan for over 20 years.

The latest and most reliable technology

The ETK series measurement method is the latest ultrasonic measurement technology which world’s most reliable.

Stable performance

There is no pressure loss due to piping resistance.
In addition, its structure is not easily affected by impurities in the piping.

 

Comparison of Ultrasonic smart meter and diaphragm meterand

 

Networking and remote control – LPWA

You can take advantage of more convenient functions such as remote monitoring and remote operation using a low-cost LPWA network.

  • Since the meter can be read remotely, labor and cost can be reduced.
  • Since the remaining amount of storage can be monitored from the office PC, cylinder replacement and tank filling can be performed efficiently.
  • Opening and closing of gas can also be controlled from the office PC.
  • Centralized management enables quick customer service by detecting Shut-off due to trouble.

LPGA network for ultrasonic meter

 

 

 

 

Specification

 

Toyokeiki Ultrasonic Smart Meters

Model ETK25MTaPR ETK4MTaPR EBTK6MT EBTK10MT EBTK16MT
Maximum flow rate 2.5m3/h 4.0m3/h 6.0m3/h 10.0m3/h 16.0m3/h
Operating pressure range 2.8+/-0.5kPa
Pressure resistance 10kPa
Maximum display quantity 9999.999m3 9999.999m3 99999.99m3
Minimum display quantity 0.2L 2.0L
Dimension (mm) H146 W174 D100 H210 W299 D148
Weight (kg) 1.6 4.0
Connection thread center distance (mm) Y: 90 / W: 130 130 220
Connection thread diameter M36x2 M56x2 M64x2
Connection pipe 1/2B(15A), 3/4B(20A) 1/2B(15A), 3/4B(20A) 3/4B(20A) 1 1/4B(32A) 1 1/2B(40A)
Ambient temperature range From -30 to 60℃
Inlet connection Left
U-bus communication terminal Equipped
Battery life 10 years 7 years
Terminals DT, SG, FG, G, Gas alarm
External 1(External device 1、H-line、Pulse output)
External 2 (U-bus, External device 2)
Shut-down Function Total flow rate detection, Increased flow rate detection, Usage time detection, Leak detection while in restart safety confirmation procedure, Seismic shut-off, Pressure drop detection, Gas alarm interlocking, Testing, Emergency, Remote control, Low battery voltage detection, Self-diagnosis function, External-1, H-line Total flow rate detection,Increased flow rate detection, Leak detection while in restart safety confirmation procedure, Seismic shut-off, Pressure drop detection, Gas alarm interlocking, Testing, Emergency, Remote control, Low battery voltage detection, Self-diagnosis function, External-1, H-line
Alert Function Flow rate detection minor leak alert, Pressure drop detection minor leak alert,
Abnormal regulated pressure detection alert, Abnormal blockade pressure detection alert,
Low battery voltage alert, Shut-off error alert, Back flow detection alert