SKU
HI6421P-02

Advanced Dissolved Oxygen Benchtop Meter with Polarographic DO Probe - HI6421P

€1,100.00
In stock

HI6421P is a streamlined dissolved oxygen benchtop meter supplied with Hanna’s polarographic oxygen probe and features a large touchscreen display for fresh and saltwater measurements.

HI6421P is a streamlined benchtop meter with a large touchscreen display, comprised of a housing and an integrated module designed for fresh and saltwater measurements of dissolved oxygen.

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 electrolytes 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.

Additional features include built-in methods and calculations for the measurement of BOD (Biological Oxygen Demand), OUR (Oxygen Uptake Rate), and SOUR (Specific Oxygen Update Rate).

Pressure compensation is done automatically (built-in barometer) or users have the option to manually enter the required value. Pressure is displayed in user-configurable units: mmHg, mbar, kPa, inHg, psi, and atm.

Features at-a-glance

User interface

  • 7-inch capacitive touch screen with multi-touch support
  • Capacitive touch back, home, and system menu keys
  • User-friendly icons and symbols allow users to easily navigate and interpret the instrument functions

The user can select between five different views:

  • Basic measurement configuration
  • Simple GLP with calibration information
  • Full GLP with electrode status and calibration point details
  • Live updated, interactive graph
  • Tabulated data with date, time, and notes

Measurement

  • Measure %Sat, mg/L, ppm (DO); mg/L, ppm (BOD); mg/L (OUR); ppm, mg/L (SOUR)
  • 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/auto-hold
  • 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 of 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

Logging

  • Data log collection of at least 1,000,000 data points (with time and date stamp)
  • Logging types: manual, automatic, auto-hold
  • Sample ID for manual and auto-hold data

Connectivity features & services

  • Transfer logged data ta a USB thumb drive
  • Log files that include measurements and calibration data (as .csv file)
  • FTP and email for log export via Ethernet and Wi-Fi connection
  • USB type A for USB stick, keyboard, and printer
  • USB type C for USB stick and PC connection

Primary Applications:

Fresh water and saltwater applications, aquaculture, aquariums, environmental.

Ordering Information:

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.

 

Specifications

SKU

HI6421P

 

Product Name

Advanced Dissolved Oxygen Benchtop Meter with Polarographic DO Probe - HI6421P

 

DO (HI764833 Polarographic probe) 

Range

0.00 to 90.00 mg/L (ppm) concentration; 0.0 to 600.0 % saturation

  Resolution

0.01 mg/L (ppm); 0.1 % saturation

  Accuracy

±1.5 % of reading ±1, least significant digit

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

  Resolution

1 mmHg; 1 mBar; 1 kPa; 1 inHg; 0.1 psi; 0.001 atm

  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

  Resolution

0.1 °C; 0.1 °F; 0.1 K

  Accuracy

±0.2 °C; ±0.4 °F; ±0.2 K

DO Calibration 

Points

Automatic-two points / User standard-single point

  Standards

0 and 100% saturation

  Reminder

Disabled / Daily

Temperature Compensation

Automatic or Manual

 

Reading 

Modes

Direct/Auto hold

  Stability criteria

Accurate Medium Fast

  Isopotential

7.000 or 4.010

  Sampling rate

1000 ms

DO Views 

Basic

Measurement (DO, Temperature) Stability status

  Simple GLP

Basic view information Last calibration date, offset, average slope

 

Full GLP

Simple GLP information and calibration point details

  Table

Measurements updated every second are displayed in the table

  Graph (plot)

Measurement versus time graph can be panned or zoomed (pinch-to-zoom technology)

Logging 

Type

Automatic, Manual, Auto hold

  Number of records

50 000 maximum per file Stores at least 1 000 000 data points per user

  Automatic interval

1, 2, 5, 10, 30 seconds / 1, 2, 5, 10, 15, 30, 60, 120, 150, 180 minutes

  Sample ID

Incremental mode

  Export option

.csv file format

Users

Up to 9 users and the default administrator account

 

Connectivity 

USB-A

2 ports for keyboard input or USB thumb drive

  USB-C

1 port for PC connectivity and USB-C type thumb drive

  WIFI-&ETHERNET

FTP / Web server Log transfer and download Email

  RS232

Connecting peripherals

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.)