172-65411MA-05 (PT1) 5 Jun 2019
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4) There are two possible outcomes from the measurement at the valve
’s outlet:
a) No ultrasonic sound was detected and the valve
seals properly. Proceed to section “9.4 Automatic
Judgement”.
b) Ultrasonic sound was detected and further
inspection is required. Continue to step 5.
5) If after taking a measurement at the outlet the screen
shown right appears, further measurements are required.
The second measurement is taken about 50 cm (2 ft)
upstream of the valve.
6) After the upstream measurement, a third measurement is
required about 50 cm (2 ft) downstream of the valve.
9.4 Automatic Judgement
Based on the measured data, PT1 will automatically judge
the operational status of the valve. For valve diagnosis,
there are 3 possible judgements:
Good
: No ultrasonic sound originating from the valve was
detected. The valve seems to seal properly without leakage.
Caution
: There is some ultrasonic sound detected. The sound level is very low, so it is
difficult to determine if the valve seals properly or if there is a very small leak. Continue
to observe the valve closely.
Leaking
: A large amount of high-intensity ultrasonic sound is detected. The valve is
likely leaking fluid, and immediate repair or replacement is recommended.
When the judgement is displayed, the result is automatically saved at the designated
record number simultaneously.
9.5 Proceed to Next Measurement
1) If the measurement or judgement is in doubt and you wish to verify by measuring
again, simply apply the probe to the measurement point at the valve outlet again
(see 9.3). The measurement will restart automatically.
Note: The second measurement will overwrite the data from the first measurement;
the original data will be lost.
2) If the measurement and judgement are acceptable, proceed to the next device.
a) Press [ENT] to save data. (
“Check Outlet” will be displayed.)
3) Reopen the valve if it was open before performing the inspection.
4) If the next device to inspect is a valve, repeat operation from step 9.2.
5) If the next device to inspect is a steam trap, switch PT1 diagnostic modes.
a) Press [
]
[
] simultaneously, changing mode to “Trap”.
b)
Follow the instructions under “8. Steam Trap Diagnosis”.
6) If finished performing inspections, turn PT1 off.
a) Press and hold [ENT] for more than 2 seconds.
C
150
Trap/
Valve
001
C
aution
