| 摘要 |
The beam system comprises a laser transmitter (15) and receiver (16) Preferred features: The coke side equipment is enabled only when the coke quenching car (8) is aligned with the coke transfer machine (7). The beam is transmitted from the coke side, and received at the pusher side. It passes either above the block of coke (4) through the gas head space (5) of the oven (1), or else above the oven top (6). Preferred method: The beam source is a class 2 HeNe laser, the receiver a flat photodiode. An Independent claim is included for the corresponding control system.
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