Hanna HI98193 Waterproof Portable Dissolved Oxygen and BOD Meter

Dissolved oxygen readings with built-in barometer and BOD routines

The HI98193 is a waterproof portable dissolved oxygen meter for wastewater plants, aeration basins, aquaculture, rivers and process water. It reads dissolved oxygen from 0.00 to 50.00 mg/L and from 0.0 to 600.0 % saturation using the HI764073 polarographic probe, which has a protective sleeve, an internal temperature sensor and a 4 m cable in the kit.

A built-in barometer lets the meter compensate automatically for atmospheric pressure, so the operator does not need altitude charts or a separate barometer reading. Manual salinity compensation allows direct determination of dissolved oxygen in saline water. The meter also includes application software for Biochemical Oxygen Demand (BOD), Oxygen Uptake Rate (OUR) and Specific Oxygen Uptake Rate (SOUR), which suits activated-sludge process control.

Technical specifications

Simple calibration and process-control functions

Hanna simplified dissolved oxygen calibration on this meter. The operator can run a one-point or two-point automatic calibration at 100 % saturation (8.26 mg/L) and at the 0 % zero-oxygen point, or enter a known value in mg/L or % saturation for a single manual point. Temperature can be calibrated at one or two points, and a user-selectable calibration time-out reminds staff when a new calibration is due. All readings are temperature compensated automatically between 0.0 and 50.0 °C.

The BOD routine supports incubation testing, while OUR and SOUR measurements help a plant assess how active the biomass in an aeration tank is. Log on demand stores up to 400 samples, Auto Hold freezes the first stable reading, and the GLP feature shows the last calibration data.

Choosing this model, and what ships in the kit

Select the HI98193 when dissolved oxygen is the primary parameter and when BOD, OUR or SOUR calculations are useful. If conductivity or pH must be recorded with the same handheld body, Hanna offers the HI98199 with interchangeable digital probes, and the HI9829 for multi-parameter field logging.

Confirm before ordering that a polarographic probe is acceptable for the application, that the 4 m cable length reaches the sampling point, and that spare PTFE membrane caps and electrolyte will be stocked. Per Hanna, the kit contains the HI764073 DO probe, two preformed PTFE membrane caps, HI7041S electrolyte solution (30 mL), HI7040 zero-oxygen solution, two 100 mL beakers, HI92000 PC software, an HI920015 micro USB cable, four AA batteries, instruction manual, quick start guide, quality certificate and an HI760193 rugged carrying case.

How the Hanna HI98193 works

The probe has a membrane that lets oxygen through to a cell. The oxygen reacts at the cell and makes a small current. The meter reads this current and turns it into a dissolved oxygen value. A temperature sensor in the probe corrects the reading for temperature. The built-in barometer corrects for air pressure, and the operator can enter the salinity for saline water.

Where the HI98193 is used

• Wastewater plants
• Aeration basins
• Aquaculture ponds and tanks
• Rivers and lakes
• Process water checks

Selection checklist for the HI98193

• Measuring range in mg/L and percent saturation
• Accuracy needed
• Probe cable length
• BOD, OUR and SOUR functions
• Logging capacity
• Battery life
• Waterproof rating
• Spare probe and membranes

Installation, commissioning and maintenance notes for the HI98193

Fit a new membrane cap and fill it with electrolyte as the manual says. Let the probe settle. Calibrate at 100 percent saturation in air and at zero oxygen. Rinse the probe after each use. Store it with the protective sleeve in place and change the batteries when the display warns.

Requesting a quotation for the Hanna HI98193

Please send the kit needed, the spare parts and the quantity. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

HI98193 measuring range

The range is 0.00 to 50.00 mg/L and 0.0 to 600.0 percent saturation.

HI98193 accuracy

The accuracy at 25 degrees C is 1.5 percent of the reading plus or minus 1 digit.

HI98193 barometer

The barometer reads 450 to 850 mmHg with a resolution of 1 mmHg.

HI98193 temperature range

The temperature range is minus 20 to plus 120 degrees C, with a resolution of 0.1 degrees C.

HI98193 data logging

The meter logs up to 400 samples on demand and connects to a PC through an opto-isolated USB port.

HI98193 power

It runs on four AA batteries, for about 200 hours without the backlight.

HI98193 case and size

The case is rated IP67. The meter measures 185 by 93 by 35.2 mm and weighs 400 g.

Meter records for the HI98193

Record the calibration date, the membrane change and the readings taken.

Choosing the right HI98193 setup

Choose this meter for field work that needs BOD and oxygen uptake functions in the same unit.

HI98193 calibration

Calibration can be one or two points automatic, at 100 percent and 0 percent saturation, or one point manual with a value entered by the user.

HI98193 salinity compensation

Salinity is entered by hand, so the meter reads dissolved oxygen correctly in saline water.

Documents and quotation

The instruction manual is attached. For other water-quality instruments, browse Portable Test and Measurement or see the Hach HQ4200 portable meter. Submit an RFQ with the model code and quantity for availability and delivery details.