740 Portable Suspended Solids
2 Basic Operation
2.1 Switching On and Off
The 740 Monitor can be turned on and off using the ON/OFF key. When the monitor is
turned on it displays a start-up screen prior to entering Measure Mode. The instrument
can be switched off at any time by pressing the ON/OFF key.
2.2 Measure Mode
The normal operating mode for the 740 Monitor is measure mode and this is active
when the measured value is displayed in large numbers. Whilst in measure mode the
display value is continually updated based upon the current sensor input signal.
The display in measure mode also includes a status bar that scrolls through the status
of the battery, details of the instrument settings and if the instrument is locked. The
status bar is also used to indicate any instrument faults that are present.
S U S P E N D E D S O L I D S
B a t t e r y = 7 5 %
m g / l
1 5 0 0
Status Text
Measurement Title
Display Value
Units
2.3 Measurement Cycle
The measurement cycle is carried out in the background at all times when the
instrument is switched on regardless of whether the instrument is in measure mode or
not. The monitor performs five measurement cycles per second enabling a response
time of one fifth of a second (with damping rate set to Instant – see damping).
2.4 Display
The resolution of the displayed value is determined by the sensor range setting, such
that only sensible display values are indicated; the same range also determines the
calibration value range.
The display units and measurement title are user selectable and should be chosen to
suit the parameter being monitored and sensor being used.
172430IM-Iss07.odt 172430IM-Iss07 Issue Date 23/10/2014 Page 9 of 46
Figure 2 Measure Mode Display
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