Portable Dissolved Oxygen Meter - HI9146
Polarographic Measuring System - The oxygen meter and probe use polarographic sensor technology based on the Ross and Clark polarographic measurement method. The probe is comprised of a platinum cathode and silver anode in an electrolyte solution held in place over the surfaces of the electrodes by a polymer membrane. An external voltage applied across the system establishes a current proportional to the concentration of dissolved oxygen.
Replaceable Membrane Caps - The pretensioned thin polytetrafluoroethylene (PTFE) membranes employ a screw cap design that can be changed quickly by simply filling with the HI7041 electrolyte fill solution and screw on the DO probe.
Automatic Calibration - Calibration can be performed at one or two points to 100% and/or 0% saturation. The 100% saturation is done in air while the 0% is done with the HI7040 bicomponent zero oxygen solution.
Good Laboratory Practice (GLP) - The Good Laboratory Practice feature allows the user to recall calibration information including date, time and calibrations points.
Automatic Temperature Compensation - All readings are automatically compensated for temperature variations with a high accuracy, built-in linearized thermistor temperature sensor behind a stainless steel cover.
Altitude Compensation - The HI9146 allows for altitude compensation for up to 4000 meters with a 100-meter resolution.
Salinity Compensation - Salinity compensation is adjustable from 0 to 80 g/L (ppt) with a 1 g/L resolution for the measurement of DO in brackish and sea water.
Auto End Point - The HI9146 features an auto endpoint mode in which, when selected, the reading will freeze on the display once a stable measurement is obtained. The auto-end feature allows for consistency among various users by ensuring that stability has been achieved before recording a measurement.
Backlit LCD - The HI9146 dissolved oxygen meter has a display with a backlight for easy viewing of readings in poor lighting conditions.
Battery Error Prevention System (BEPS) - The Battery Error Prevention System detects when the batteries become too weak to ensure reliable measurements. The backlight feature is automatically disabled when batteries are getting low and a clear indication is displayed to warn the user of this condition.
|Product Name||Portable Dissolved Oxygen Meter - HI9146|
|Dissolved Oxygen Range||0.00 to 45.00 ppm (mg/L), 0.0 up to 300.0% saturation|
|Dissolved Oxygen Resolution||0.01 ppm (mg/L); 0.1% saturation|
|Dissolved Oxygen Accuracy||±1.5% F.S. or ±1 digit, whichever is greater|
|Dissolved Oxygen Calibration||one or two points at 0% (HI 7040 solution) and 100% (in air)|
|Dissolved Oxygen Temperature Compensation||automatic from 0 to 50°C (32 to 122°F)|
|Salinity Compensation||0 to 80 g/L (ppt) (resolution 1 g/L)|
|Altitude Compensation||0 to 4000 m (resolution 100 m)|
|Temperature Range||0.0 to 50.0°C / 32.0 to 122.0°F|
|Temperature Resolution||0.1°C / 0.1°F|
|Temperature Accuracy||±0.2°C; ±0.4°F (excluding probe error)|
|DO Probe||HI76407 DO probe (included)|
|Battery Type/Life||1.5V AAA (3) /approximately 200 hours of continuous use without backlight (50 hours with backlight on)|
|Environment||0 to 50°C (32 to 122°F); RH max 95%|
|Dimensions||185 x 72 x 36 mm (7.3 x 2.8 x 1.4”)|
|Weight||300 g (10.6 oz.)|
|Ordering Information||HI9146 is supplied complete with HI76407 DO probe, HI76407A pre-formed PTFE DO membranes (2), HI7041S electrolyte solution (30 mL), batteries, instructions and rugged carrying case.|