Dr. Jiro Tsuji, founder of Riken Keiki, develops the Interferometer (world’s first combustible gas monitor) based on lightwave interference.
Riken Keiki Fine Instrument Co., Ltd. is established and the Interferometer gas monitor is in full production.
Riken develops combustible gas monitors based on catalytic sensors.
WEATHERALL MINING EQUIPMENT AND INSTRUMENTS LIMITED was formed by founder Mr Helmut Weatherall who supplied Riken Keiki Model 18 to the British Coal Board for use in all UK coal mines.
Riken builds the first combination combustible and oxygen portable gas monitor with alarm model GX-3.
Together with Riken Mr WEATHERALL develops the Model 18 to measure ANAESTHETIC GASES in conjunction with Dr John F Nunn, an Anaesthetist at the London Hospital. The results of his research were published in 1970 in the British Journal of Anaesthesia; helping validate the principle of interference refractometry as a technique suitable for measuring anaesthetic gases. Following this development, Riken produced the Model 18 for Halothane.
The tremendous worldwide success of this instrument in Riken’s product line up, can be directly attributed to Mr Weatherall.
Riken introduces the world’s first 3 gas monitor with alarm, model 1641.
Models OX-80, CO-80, and HS-80 become the first pocket size monitors from Riken.
Mr Weatherall retires, and Mr Roger Worthington takes over the import and distribution of Riken Keiki gas detection products in the newly formed company WEATHERALL EQUIPMENT & INSTRUMENTS LIMITED
Riken introduces the world’s first 3 gas, belt worn monitor, the GX-82.
Riken introduces RI-411, portable IR unit for CO2.
Riken offers the RI-413, portable IR unit for Freons.
Riken presents the GX-86, world’s first 4 gas, belt worn portable monitor.
Riken introduces the 4 gas monitor GX-91B. Also, the OX-62B single gas O2 with extender cable, and the SC-90 super toxic portable.
In a joint venture, RKI Instruments, Inc. becomes Riken Keiki’s North American Partner. Also unveiled is the GX-94 four gas portable with data logging and auto calibration.
RKI and Riken together develop and introduce the first 6 gas portable monitor, the EAGLE.
Weatherall wins the contract to supply 700+ detection points at Phase 3 plant at the NEC Semiconductor Fab in Scotland
Riken offers the GasWatch, the first wrist worn multi- gas monitor.
RKI develops and begins shipping the Diffusion Eagle. 550,000 portable and fixed gas monitors sold to date by Riken Keiki.
Riken introduces the GX-2001, worlds smallest 4 gas monitor.
Riken introduces the GX-2003, five-sensor sample drawing personal monitor, measures % LEL and % volume Methane.
WEATHERALL achieve ISO 9001 certification for our Quality Management System for “The distribution, repair and servicing of portable and fixed gas detection equipment”.
Riken introduces the GX-2009. The worlds new smallest 4 gas monitor.
Riken introduces the GX-2012. Five-sensor sample drawing monitor.
WEATHERALL supply and install a new multi-point fixed gas detection system at one of GE’s manufacturing plants.
Riken Keiki Introduces the GX-3R and GX-3R Pro the Worlds smallest lighest 4 and 5 gas personal Monitors they herald a revolution in Personal Gas Detection
2021 WEATHERALL Install Gas Detection system in UK first Purpose built Hydrogen Bus depot