Thermo Fisher Scientific CyberScan DO 110 - Manual (Page 18)

Instruction Manual CyberScan DO 110
13
5.3 Taking Measurements
1. Rinse the probe with deionised or distilled water before use to remove any
impurities adhering to the probe body. If it is dehydrated, soak it for 30
minutes in tap water.
2. Switch on the meter. The MEAS annunciator appears on the top of the
LCD. The ATC indicator appears in the lower right hand corner to indicate
Automatic Temperature Compensation.
3. Dip the probe into the sample and allow some time for the reading to
stabilize
NOTE: When dipping the probe into the sample, make sure the tip of the
probe is completely immersed. Stir the sample gently to create a
homogenous sample. Be sure to tap probe very gently to remove air
bubbles. Air bubbles will cause errors in the reading.
4. .When the reading is stable, the READY annunciator appears. Note the
reading on the display.
5. Press the HOLD key to freeze the value of the DO
reading for a delayed observation. Press the HOLD
key again to release the held values.
6. To toggle between % Saturation and mg/l (ppm)
measurement mode, press the MODE key.
NOTE: This meter shuts off automatically after 20 minutes of
last key press. If the meter is shut off either automatically or
manually, the HOLD value will be lost. For longer storage, use
the memory functions.
5.3.1 Taking measurements with READY indicator selected on
If the READY indicator has been activated, the READY annunciator lights when the
reading is stable. You can switch the READY indicator on or off in SETUP program.
See 8.2.1 - P1.1: READY Indicator and Auto Hold function on page 23.
5.3.2 Taking measurements with the AUTO HOLD feature selected on
When a reading is stable for more than 5 seconds, the AUTO HOLD feature will
automatically “HOLD” the reading. The “HOLD” indicator appears on the left side of
the display. Press the HOLD/ENTER key to release the reading. Switch the Auto
Hold feature on or off in SETUP program in section 8.2.1 - P1.1: READY Indicator
and Auto Hold function on page 23.
MEAS
%
ATC
°C
98.9
MODE
mg/l
8.24
24.5
24.5
MEAS
READY
ATC
°C