The presence of ‘is’ at the end of the instrument model number is an indication that a unit has Intrinsically Safe approval. Gascheck 3000is and 5000is instruments, which have black mouldings, are Intrinsically Safe. Instruments which have grey mouldings, such as the Gascheck 3000, 5000 and G models, are not Intrinsically Safe.

Please do not hesitate to contact your local distributor for further information or advice.