Hach-Lange SENSION+ MM110 - Manual (Page 13)

9
5. Operation
ENGLISH
Stable measurement
5.1. Measurement
Note: the instrument must be calibrated before reading
the first pH value.
1. Press to turn on the instrument.
2. Remove the sensor protector.
3. Clean the sensor with deionized water.
4. Stir the sensor uniformly in the sample, holding it by
the top.
5.1.1. Stability measuring
Follow the diagram.
The reading is not stabilized on the screen until the
electrode signal varies less than 0.01 pH (0.5 mV) for
6 sec.
Once the reading has stabilized, the screen lights up
for 2 sec.
5.1.2. Continuous measuring
Once stability measuring has begun, press the key
twice .
The instrument displays the measured value directly on
screen at all times.
The continuous reading should always be started after
beginning a stability reading (see diagram).
To end a continuous reading, press
.
The display will light up for 2 sec.
Note: If the measuring instrument is not used for 5 minu-
tes, it shuts off automatically.
t
mV
t
mV
t
mV
t
mV
t
mV
t
mV
t
mV
t
mV
t
mV
2 s
+
Stability
measuring
Continuous
measuring
5.2. Changing temperature units
The instrument is shipped ready to measure temperature and
express the values in °C.
Follow the diagram to change the units to °F.
t
mV
t
mV
+
(1)
(1) Press the keys simultaneously.
sensION+ MM110 HACH_LANGE 0710.indd ANG:9 sensION+ MM110 HACH_LANGE 0710.indd ANG:9 7/9/10 15:32:45 7/9/10 15:32:45