What is the name of this instrument?
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Today in the workshop, the manager from the Safety and Environment department asked us questions. It asked what the name of a certain table was What is the normal range of values? This table is installed on an autoclave, and hydrogen gas is passed through it for reactions. Waiting online, thanks!
A gas detector for measuring concentration, in PPM units
From the picture, it appears to be an online oxygen detector from Shenzhen Penglei Technology, with a measurement range of 0–50,000 ppm.
Trace oxygen detector. The alarm value depends on your process conditions.
1% VOL equals 10,000 ppm; the range of this device is 0–5% VOL in terms of oxygen content by volume. Based on your question, it seems you are referring to measuring the oxygen level in the pipes after nitrogen purging is carried out in the hydrogen reduction reactor. The oxygen content in nitrogen within the autoclave must not exceed 3% VOL, that is, 30,000 ppm. The oxygen content in hydrogen must not exceed 0.5%, or 5000 ppm; therefore, it is likely that this refers to the oxygen content in nitrogen after nitrogen displacement.
The oxygen concentration monitor is clearly at the high alarm level (Halm).