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HI9142 Portable Dissolved Oxygen/Temperature Meter for Clean Water

Producer: HANNA Instruments

SKU: HANNA-HI9142 Category: Hanna experimental measuring equipment

Portable Dissolved Oxygen/Temperature Meter in Clean Water

– Membrane dissolved oxygen measurement

– Suitable for measuring rivers, lakes, and still water

– Manual calibration

– Polarographic electrode

– Replace membrane cap and filling solution once a month

– Comes with full accessories and shock-absorbing suitcase for field trips

POLAROGRAPHIC MEASURING SYSTEM

The meter and probe use Polarographic sensor technology based on the Ross and Clark polarographic measurement method. The probe consists of a platinum cathode and silver anode in an electrolyte solution held in place on the surface of the electrode by a polymer membrane. Oxygen diffuses through the membrane and establishes a current proportional to the concentration of dissolved oxygen.

MANUAL CALIBRATION

The meter has manual calibration feature at 100% in air

AUTOMATIC TEMPERATURE COMPENSATION

All values are automatically compensated for temperature with high precision, built-in temperature sensor behind the stainless steel case.

REPLACE MEMBRANE CAP AND FILLING SOLUTION PERIODICALLY

– The PTFE membrane cap uses a screw cap design that can be quickly replaced by filling with HI7041 electrolyte solution and screwing onto the DO probe.

– Periodically once a month.

– The machine comes with 2 membrane caps and 1 30mL filling solution

VIDEO

SPECIFICATIONS

DO scale	0.0 to 19.9 mg/L (ppm)
DO Resolution	0.1 mg/L (ppm)
DO Accuracy	±1.5% FS (@ 25°C/77°F)
Temperature scale	-5.0 to 50.0°C (23.0 to 122.0°F)
Temperature resolution	0.1°C (1°F)
Temperature accuracy	±0.2°C (±1°F) (excluding probe error) (@ 25°C/77°F)
Temperature compensation	Automatic, 0 to 50°C (32 to 122°F)
Calibration	Manually, at one or two points (zero and slope)
Electrode	Polarographic type with integrated temperature sensor, DIN connector
The battery	3 1.5V batteries / about 1000 hours of use
Environment	0 to 50°C (32 to 122°F); RH max 100%
Size	196 x 80 x 60 mm
Mass	500 g
Guarantee	12 months for the machine and 6 months for the electrode (for products with intact tags and warranty card)
Supply includes	– Measuring machine HI9142 – Dissolved oxygen electrode HI76407/4 4m cable – 2 PTFE DO membrane caps HI76407A/P – Electrolytic solution HI7041S (30 ml) – Battery. - User manual. - Warranty. – Carrying case.