EasyManua.ls Logo

Hanna Instruments HI 9143 - Functional Description - Probe; Functional Description - Meter

Hanna Instruments HI 9143
11 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
45
FUNCTIONAL DESCRIPTION - PROBE
9
1
3
4
4
5
6
7
8
9
2
10
8
7
6
1. D.O. probe
2. Protective cap
3. Watertight shielded cable
4. Polypropylene body
5. Temperature sensor
6. O-Ring seal
7. AgCl (silver chloride) anode
8. Platinum cathode
9. Oxygen permeable membrane
10. Membrane cap
FUNCTIONAL DESCRIPTION - METER
1) Battery compartment
2) Probe connector
3) Liquid Crystal Display (LCD)
4) ON/OFF key
5) CAL key, to enter/exit calibration mode
6) FACTOR* key, to select altitude (F1)
and salinity (F2)
7) UP* and DOWN* arrow keys, to set F1
and F2 values
8) HOLD key, to freeze reading on display
9) RANGE key, to select oxygen measure-
ment range (ppm or % of saturation)
10) Socket for 12 Vdc power adapter
19) “LOW BAT”, low battery indicator
20) “SAMPLE”, measuring mode indicator
21) “F1”, altitude factor* indicator
22) “F2”, salinity factor* indicator
23) “%” or “ppm”, oxygen measure unit
24) Secondary display
(*) HI 9143 only
HI 9143
Microprocessor
Auto Cal
Dissolved
Oxygen Meter
CAL
ON/OFF
RANGE
FACTOR
85
9
67
23
24
4
19
20
21
22
3
210
SAMPLE
LOBAT
SAMPLE
HOLD
CAL
F1
F2
HOLD
ppm
ppm
%
°C
°C
1
2
10
The dissolved oxygen probe is provided with a
membrane covering the polarographic sensor
elements, and a built-in thermistor for tempera-
ture measurement and compensation.
The thin permeable membrane isolates the
sensor elements from the testing solution, but
allows oxygen to enter.
When a voltage is applied across the sensor,
oxygen that passes through the membrane
causes a current to flow from which the oxygen
concentration is determined.

Related product manuals