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
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 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.
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 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
|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.
|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 input / output terminal
Other than gas leak alarm terminal, TOYOKEIKI ultrasonic meter has extra terminals for input / output. Also available for LPWA network connection.
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.
There is no pressure loss due to piping resistance.
In addition, its structure is not easily affected by impurities in the piping.
You can take advantage of more convenient functions such as remote monitoring and remote operation using a low-cost LPWA network.
|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|
|Maximum display quantity||9999.999m3||9999.999m3||99999.99m3|
|Minimum display quantity||0.2L||2.0L|
|Dimension (mm)||H146 W174 D100||H210 W299 D148|
|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℃|
|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