For the measurement of DO the HI98193 is supplied with the HI764073 polarographic dissolved oxygen probe. This probe uses preformed PTFE membrane caps that are field replaceable. The probe connects to the meter with a unique quick connect waterproof DIN connector allowing for a secure attachment without a threaded connect that is also easy to remove.
The HI98193 portable DO meter has extended ranges of up to 50 ppm and 600% saturation. When measuring dissolved oxygen, compensations for pressure, temperature and salinity are essential for an accurate reading.
Pressure compensation can be done automatically with the meter’s built-in barometer or by manual entry. Calibration of the built in barometer is done to one point by entering value of a reference barometer. Pressure is displayed in user-selectable units including mmHg, inHg, atm, psi, kPa, and mbar.
The HI764073 DO probe has a built in temperature sensor for automatic temperature compensation. The temperature sensor can be calibrated to one or two points. Manual entry of salinity values allows for the salinity compensation of dissolved oxygen readings in saline waters.
Other features include built in methods and calculations for the measurement of Biological Oxygen Demand (BOD), Oxygen Uptake Rate (OUR) and Specific Oxygen Uptake Rate (SOUR).
The HI98193’s log on-demand feature allows users to store up to 400 readings. This data can then be transferred to a PC with the HI920015 USB cable and HI92000 software.
GLP data is accessible by a fixed dedicated key this data includes date, time, pressure, calibrated value, temperature and salinity value of the last calibration.
Access help at any time at the press of a dedicated button and view content specific information based on the screen that is currently being viewed.
The high contrast graphic LCD is easy to read outdoors in bright sunlight to low-lit areas with the backlight. A combination of dedicated and virtual keys allows easy, intuitive operation in a choice of languages.
The compact, durable HI760193 carrying case is thermoformed to hold all necessary components for taking a field measurement, including the meter and electrode, beakers, buffer solutions, cleaning solutions and storage solutions.
|DO Range||0.00 to 50.00 ppm (mg/L); 0.0 to 600.0% saturation|
|DO Resolution||0.01 ppm (mg/L); 0.1% saturation|
|DO Accuracy||±1.5% of reading ±1 digit|
|DO Calibration||automatic one or two point at 100% saturation (8.26 mg/L) and 0% saturation (0 mg/L).|
|Atmospheric Pressure Range||450 to 850 mmHg|
|Atmospheric Pressure Resolution||1 mmHg|
|Atmospheric Pressure Accuracy||± 3 mmHg within ±15% from the calibration point|
|Atmospheric Pressure Calibration||one point at any in range pressure value|
|Temperature Range||-20.0 to 120.0°C (-4.0 to 248.0°F)|
|Temperature Resolution||0.1°C (0.1°F)|
|Temperature Accuracy||±0.2°C; ±0.4°F (excluding probe error)|
|Temperature Calibration||one or two point at any in range temperature value|
|Temperature Compensation||automatic from 0 to 50°C (32 to 122°F)|
|Measurement Modes||direct DO; BOD (biochemical oxygen demand); OUR (oxygen uptake rate); SOUR (specific oxygen uptake rate)|
|Barometric Compensation||automatic from 450 to 850 mmHg|
|Salinity Compenstaion||automatic from 0 to 70 g/L|
|Electrode/Probe||HI764073 polarographic DO probe with protective sleeve, internal temperature sensor, DIN connector and 4m (13’) cable (included)|
|Log-on-demand||up to 400 samples|
|PC Connectivity||opto-isolated USB with optional HI 92000 software and micro USB cable|
|Battery Type/Life||1.5V AA batteries (4) / approximately 200 hours of continuous use without backlight (50 hours with backlight)|
|Auto-off||user selectable: 5, 10, 30, 60 min or can be disabled|
|Environment||0 to 50°C (32 to 122°F); RH 100% (IP67)|
|Dimensions||185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”)|
|Weight||400 g (14.2 oz.)|
|Ordering Information||HI98193 is supplied with HI764073 DO probe, preformed PTFE membrane cap (2), HI7041S electrolyte solution (30 mL), HI7040 bicomponent zero oxygen solution, 100 mL plastic beakers (2), HI92000 PC software, HI920015 micro USB cable, 1.5V AA batteries (4), instruction manual, quick start guide, instrument quality certificate and HI760193 rugged carrying case.|