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HI6421 DO meter

DO Meter HI6421 – Hanna Instruments

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 rugged insoluble black oxygen permeable protective layer.

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Deskripsi

Jual DO Meter HI6421 – Hanna Instruments.

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Measurement :

  • Application-specific profiles allow quick and direct measurement without the need to update the sensor and system settings
  • Active log during measurement
  • Measurement stability indicator (using the Stability Criteria setting)
  • Reading modes: direct and direct/autohold
  • Temperature compensation can be automatic or set manually
  • Audible and/or alarm messages for measurements outside of predefined limits
  • Galvanic isolation for measurement

Calibration

  • One or two points calibration at 0% and/or 100% saturation
  • Single point manual calibration in mg/L or % saturation using a reference method
  • Non-volatile memory saves data and settings

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

  • Data log collection of up to 1,000,000 data points (with time and date stamp)
  • Logging types: manual, automatic, autohold
  • Sample ID for manual and autohold data

Specification :

Specification Name Detail
SKU HI6421-01
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.)
Ordering Information HI6421 is supplied with HI7641133 optical dissolved oxygen probe (opdo®); HI764060 electrode holder; capillary pipette; 24 VDC power adapter; USB-C to USB-A cable; probe quality certificate; quick reference guide with instrument quality certificate.
HI6421P is supplied with HI764833 polarographic probe; HI764060 electrode holder; capillary pipette; 24 VDC power adapter; USB-C to USB-A cable; probe quality certificate; quick reference guide with instrument quality certificate.

Jual DO Meter HI6421 – Hanna Instruments

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