$2,413.95 – $3,280.78
Prices include GST. Not all items are in stock. Call 03 9769 0666 to confirm.
HI6421 and HI6421P are streamlined benchtop meters with a large touch screen display, comprised of a housing and an integrated module designed for fresh and saltwater measurements of dissolved oxygen.
Advanced Dissolved Oxygen Meter with Optical DO Probe (opdo®)
HI6421 includes Hanna’s HI7641133 optical dissolved oxygen probe (opdo®) that is based on the principle of fluorescence quenching. An immobilized Pt-based luminophore is excited by the light of a blue LED and emits a red light. As oxygen interacts with the luminophore it reduces the intensity and lifetime of the luminescence. The lifetime of the luminescence is measured by a photodetector and is used to calculate the dissolved oxygen concentration.
The probe is fitted with easy-to-use Smart Caps (HI764113-1) which lock in place and contain pre-loaded calibration coefficients that are automatically transmitted to the probe. The Smart Cap features an immobilized O₂ sensitive luminophore with a rugged insoluble black oxygen permeable protective layer.
Over time, the sensor’s optical components can age but are compensated for by using the reference signal to compensate for the measuring path. As a result, the sensor provides accurate DO measurements over long periods of time without the need for frequent calibration.
Advanced Dissolved Oxygen Meter with Polarographic DO Probe
HI6421P includes the HI764833 polarographic probe. Slim and versatile, this probe covers a wide range of dissolved oxygen and has a built-in thermistor temperature sensor that compensates for temperature variations. The slim design allows for convenient measurement in test tubes and Biological Oxygen Demand (BOD) bottles.
Durable and robust, the probe features a platinum cathode and Ag/AgCl anode assembly. Accurate and with a fast response time, readings are not flow dependent.
The probe is fitted with durable (PTFE), oxygen permeable, screw on membrane caps. Caps are filled with electrolyte and easily installed on the probe.
Concentration measurements are automatically compensated for barometric pressure, temperature, and salinity. Barometric pressure and temperature are automatically measured and compensated. Salinity is automatically compensated by setting manually the salinity concentration of the water being measured.
Pressure compensation is done automatically (built-in barometer) or users have the option to manually enter required value. Pressure is displayed in user-configurable units: mmHg, mbar, kPa, inHg, psi, atm.
User Interface
Five Intuitive Views
Measurement
Calibration
Zero Oxygen Calibration Solution
When performing a DO calibration, it is important that the correct standards are used. We include some starter solution to get you going. HI7040L is a bi-component zero oxygen solution designed so you can quickly calibrate to 0% oxygen concentration.
Logging
Connectivity Features & Services
Help Section for Meter Guidance
Smart Cap Technology
Automatic Cap Recognition
Hanna’s Smart Caps feature a built-in RFID reader that is able to store important data, including manufacture date and first-use date for increased traceabilty.
Longer Life
Smart Caps last one year from the date of first use. Your meter will automatically count down from initialization and will have your meter remind you when it has expired with an on-screen message.
Aligned Right Every Time
An alignment key ensures that your Smart Cap is on correctly every time.
| Specification Name | Detail |
|---|---|
| SKU | HI6421 |
| DO Range | HI6421 - HI7641133 Optical probe: 0.00 to 50.00 mg/L (ppm) concentration; 0.0 to 500.0% saturation HI6421P - HI764833 Polarographic probe: 0.00 to 90.00 mg/L (ppm) concentration; 0.0 to 600.0% saturation |
| DO Accuracy (@25˚C/77˚F) | HI6421 - HI7641133 Optical probe: from 0.00 to 20.00 mg/L (ppm) 1.5 % of reading or ± 0.01 mg/L (ppm), whichever is greater from 20.00 to 50.00 mg/L (ppm) ±5% of reading from 0.0 to 200.0% saturation ± 1.5% of reading or ± 0.1%, whichever is greater from 200.0 to 500.0% saturation ±5% of reading HI6421P - HI764833 Polarographic probe: ±1.5 % of reading ±1, least significant digit |
| DO Resolution | HI6421 - HI7641133 Optical probe: 0.01 mg/L (ppm); 0.1% saturation HI6421P - HI764833 Polarographic probe: 0.01 mg/L (ppm); 0.1% saturation |
| DO Calibration | DO optical: One or two points automatic calibration at 100% (8.26 mg/L) and 0% (0 mg/L). Single point manual using a value entered by the user in % saturation or mg/L. DO polarographic: Automatic-two points / User standard-single point |
| Barometric Pressure Range | 450 to 850 mmHg; 600 to 1133 mBar; 60 to 133 kPa; 17 to 33 inHg; 8.7 to 16.4 psi; 0.592 to 1.118 atm |
| Barometric Pressure Resolution | 1 mmHg; 1 mBar; 1 kPa; 1 inHg; 0.1 psi; 0.001 atm |
| Barometric Pressure Accuracy | ±3 mmHg within ±15 % from the calibration point; ±3 mmHg ±1 least significant digit |
| Temperature Range | −20.0 to 120.0 °C −4.0 to 248.0 °F 253.0 to 393.0 K |
| Temperature Resolution | 0.1 °C; 0.1 °F; 0.1 K |
| Temperature Accuracy | ±0.2 °C; ±0.4 °F; ±0.2 K |
| DO Probe | HI6421: HI7641133 Optical probe HI6421P: HI764833 Polarographic probe |
| Power Supply | DC adapter 100-240AC to 24VDC 2.5A |
| Environment | 0 - 50 °C / 32 - 122 °F / 273 - 323 K maximum 95% RH non-condensing |
| Dimensions | 205 x 160 x 77 mm (8.0 x 6.2 x 3.0") |
| Weight | Approximately 1.2 kg (26.5 lbs.) |
| Warranty | 2 years |
Meter with Optical DO Probe (HI6421-02) is supplied with:
Meter with HI764833 Polarographic DO Probe (HI6421P) is supplied with:
All prices are inclusive of GST and not all items are stock items, if you require an immediate solution please send an email to sales@hannainst.com.au or call us on (03) 9769 0666.
Free standard delivery: We offer free delivery within Australia on orders over $100, typically arriving within 5 to 7 days. Delivery times may vary depending on the courier service and the recipient's location. Free shipping is not available with other offers or discounts.
Same-day despatch: Place your order before 1 PM Monday to Friday for same-day despatch. Delivery times may vary depending on the courier service and the recipient's location. Subject to stock availability.
Please note that we do not offer shipping to PO Box addresses.
| Weight | 1.2 kg |
|---|
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
