Rae MiniRAE Plus PGM-76, Руководство по эксплуатации и обслуживанию

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SECTION 4 PROGRAMMING IN HYGIENE MODE
4 - 8
4.5 Set TWA Alarm Limit
1. Set "TWA alarm limit" option is the 3rd menu option in
Table 4.1.
- Display shows "tA xxx.x" with the left-
most digit flashing, where "xxx.x " is
the previously stored TWA alarm limit.
2. To modify this limit, starting from the left-most digit, use
[up] or [down] arrow key to change the digit value and
[enter] key to confirm the digit, the flashing digit will move
on to next digit to its right. Repeat this process until all 4
digits of the new TWA alarm limit are entered.
3. To preserve the previously stored TWA alarm limit, press
[menu] key at step 1 or in the middle of step 2, the unit will
abort the TWA alarm limit entry and move to the next menu
option.
4. Note: if the security level of the unit is set to "no change
allowed" (level 0), step 2 will not have any effect on the
previously stored alarm limits. Users can view the limit but
can not alter the limit.