SMC Networks PFM3 Series Operation Manual page 48

Flow monitor
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●Key Lock
A wrong operation performed unintentionally such as change of set value can be prevented.
If the button operation is performed while key lock setting is being performed, [LoC] is indicated for approx.
1 second.
<Operation-Without secret code input->
(1) Keep pressing the
measurement mode. The current setting [LoC] or [UnL] is indicated.
(Releasing key lock can be done in the same way.)
(2) Press the
or
(3) Press the
button to enter the setting.
<Operation-With secret code input->
•Locking
(1) Keep pressing the button for 5 seconds or longer in the measurement
mode. [UnL] is indicated.
(2) Press the
(3) Press the button to enter the setting.
button for 5 seconds or longer in the
button to select locking or unlocking of the key.
button to select locking of the key [LoC].
or
-47-
No.PF##-OMJ0018

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