Hach-Lange SENSION+ 50 49 User Manual - Manual (Page 10)

5. Add approximately
6.4 mm (¼ inch) of
deionized water to the
DO probe storage tube. 6. Invert and shake the
DO probe storage tube
to remove all water
droplets. 7. Immediately put the
DO probe in the storage
tube and turn to tighten. 8. Push Calibrate to
measure the calibration
solution. The calibration
is complete when the
reading is stable. The
meter shows briefly the
message CAL OK if
calibration is accepted.
Adjust the calibration (manual calibration)
A single custom standard value can be specified. Adjust the instrument to read a specified solution
value for pH, DO and conductivity. Use this procedure to calibrate the probe with a single standard
solution.
1. Connect the probe
to the meter. Set the
meter to on.
Note: For dissolved
oxygen calibration,
polarize the probe.
Refer to
Polarize the
dissolved oxygen probe
on page 5.
2. Rinse the probe with
deionized water. Blot
dry with a lint-free cloth. 3. Prepare the
standard solution in the
storage tube. Add
approximately 6.4 mm
(¼ inch) of solution. 4. Put the storage tube
in the corresponding
sensor and turn to
tighten.
5. Push Read. Wait
until the reading is
stable (stops flashes in
the display). 6. Push Calibrate. The
parameter flashes on
the meter display. Use
the arrow keys to
change the parameter,
if applicable. 7. Push and hold
Calibrate, then push
Read. The measured
value flashes. Use the
arrow keys to change
the value. 8. Push Calibrate to
confirm the value. The
meter shows "OK".
8 English