HT instruments HT157 - Manual (Page 21)

HT155 - HT157
EN - 19
5. Press the “ ” key to start measuring. After this operation, the instrument:
 Starts measuring from the minute indicated in the system date/time and shows this
reference in column “hh:mm” with the relevant values of the quantities read in real
time
 Shows the message “Run” on the display
 In line 1, it shows the measuring time “Tm” instead of the indication of the set range
 Disables the possibility of accessing the programming menu by pressing the “ ” key.
Stops measuring to enter the programming menu again
6. Once the measuring time has elapsed, the instrument:
 Shows the indication “Wait” on the display, to indicate that it is waiting to start
(instant “00”) in the new measuring interval at the hour following the initial one (see
) (e.g.: if measurement is started at 8:49, the second measurement will be started at
9:49:00)
 Shows the measuring range again instead of the measuring time “Tm”
 This operation is repeated for each of the remaining 24 intervals
Fig. 16: Screen of instrument waiting to start a new recording (Wait)
CAUTION
When a measurement is in progress (Run) or waiting (Wait), the
“ ”,“ ”,“ ”,“ ”,“ ” keys are not active and it is necessary to stop or
cancel measurement to activate them again
7. With the flashing cursor on the “
” icon, press the “ ” or “ ” keys to access the
graphic display of the measure. The instrument displays the following screen:
 Initial line
 Central lines
 Final line
Fig. 17: Screen of graphic display in 24Hours mode