Hach sensION+ MM150 User Manual

11
6. Operation
ENGLISH
6.1. Measurement
Note: The instrument must be calibrated before taking the
first reading.
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.
6.1.1. Stability measuring
Follow the diagram.
The reading is not locked on the screen until the sensor sig-
nal varies less than:
- pH: 0.01 pH for 6 sec.
- EC: ± 1 digit for 6 sec.
- Redox: 0.5 mV for 6 sec.
Once the reading has stabilized, the screen lights up for
2 sec.
6.1.2. 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 be-
ginning 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 minutes,
it will shut itself off automatically.
2 s
+
Stability
measuring
With sensor 50 48
With sensor 50 59
Continuous
measuring
6.2. Units of measurement
The sensION
™
+ MM 150 automatically recognizes the sen-
sor connected and displays the relevant values and units on
screen:
- Sensor 50 59: pH, conductivity, TDS and temperature.
- Sensor 50 48: pH, conductivity, redox (mV) and temperature.
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Hach sensION+ MM150 Specifications

General

Brand	Hach
Model	sensION+ MM150
Category	Measuring Instruments
Language	English