Heath Consultants Odorator - Manual (Page 11)

O
peration
2. Connect the sample hose to the gas supply outlet valve and to the
ODORATOR inlet port (1).
3. Open the gas supply outlet valve and the ODORATOR flow metering
valve for about 10 seconds to purge the air out of the sample hose.
4. Close the flow metering valve.
5. Turn the ODORATOR “ON”. Raise the exhaust port cover.
6. Wait about 30 seconds and then position the nose about 3/4 inch (20
mm) above the exhaust port and sniff the exhaust. The exhaust must
be un-odorized.
7. Push the read switch (5) and while holding it down adjust the zero knob
(7) until the LCD reads “.00”. Release the read switch.
8. Slowly open the flow metering valve counter-clockwise 1/2 - 1 turn.
Wait about 30 seconds and then position the nose about 3/4 inch (20
mm) above the exhaust port and sniff the exhaust. Your upper lip may
lightly touch the front edge of the exhaust port.
9. If no odorant is detected in the exhaust, repeat step 8.
**NOTE** The user should frequently pause when sniffing for
odorant by moving the nose away from the instrument,
breathing fresh air and then continuing testing. This
precaution is necessary because the sense of smell
fatigues rapidly during this type of test.
10. The first faint smell of odorant is called the threshold detection level.
Considerable variation will exist among individuals in detecting this
threshold level.
11. Slowly open the flow metering valve another 1/2 - 1 turn, wait about
30 seconds and then position the nose about 3/4 inch (20 mm) above
the exhaust port and sniff the exhaust.
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