Hanna Instruments HI6221 Research Grade Meter

Advanced pH, mV, and Temperature Measurement

Overview

The Hanna Instruments HI6221 is an advanced, highly accurate, and user-friendly laboratory meter designed for precise pH, mV, and temperature measurements. This compact and easy-to-operate device features a large touchscreen interface and an integrated pH/ORP measurement module. It is supplied with a high-quality pH electrode and a temperature probe, enabling automatic temperature-compensated readings.

The system is built to meet complex measurement and monitoring requirements, delivering exceptional accuracy, reproducibility, and reliability. Its intuitive design and comprehensive features make it suitable for a wide range of laboratory applications.

[Image Description: A Hanna Instruments HI6221 research-grade meter is shown. It features a large, white touchscreen display showing a stable pH reading of 7.545, a mV reading of -2.4mV, and a temperature of 25.0°C (ATC). A pH electrode and temperature probe are connected. A "Wi Fi" indicator is visible on the device.]

Key Features

Intuitive Interface

7-inch capacitive touchscreen with multitouch support.
Capacitive hard keys for Back, Home, and System Menu navigation.
User-friendly icons and symbols for easy operation.

Advanced Measurement Capabilities

Application-specific profiles for quick, direct measurements without complex setting adjustments.
Active logging during measurements.
Measurement Stability Indicator ensures reliable readings.
Measurement Modes: Direct and Direct/Autohold.
Automatic or Manual Temperature Compensation.
Configurable alarms for measurements outside predefined limits.
Galvanic isolation for pH/ORP measurements enhances safety and signal integrity.

Calibration and Data Management

Five-Point Calibration: Supports automatic recognition of standard buffers (Hanna Instruments and NIST) and allows for custom buffer selection.
Non-volatile memory stores data and settings.
Extensive Data Logging: Capable of logging at least 1,000,000 data points with time and date stamps. Supports manual, automatic, and autohold logging modes.
Sample ID feature for manual and Autohold data entry.

Connectivity and Support

Extra Connectivity Options: Export logs to USB stick, as .csv files, or via FTP and email using Ethernet and Wi-Fi.
Multiple USB Ports: USB Type-A for peripherals like keyboards and printers, and USB Type-C for PC connection or USB stick.
On-board Help Section: Provides video support for key functionalities.

Electrode Holder

The HI6221 includes the HI764060 electrode holder with a flexible arm, which can be mounted on either side of the meter, providing secure support for electrodes during measurements.

[Image Description: A Hanna Instruments HI6221 meter is shown with its connected electrode holder, featuring a flexible arm.]

Customizable Displays

Users can select from five different display views to suit their needs:

Basic Measurement Configuration: Displays the measured value, unit, and temperature source.
Simple GLP: Includes the last calibration date and time, offset value, average slope, and electrode condition.
Full GLP: Provides electrode status, calibration details, and buffer information.
Interactive Graph: Live updated graph of the measured value.
Table View: Displays logged measurements with date, time, and notes. Newest data appears at the top of the table.

Functions and Interface Details

[Diagram Description: A detailed diagram illustrates the HI6221 meter's front panel and rear ports. The front panel shows a 7-inch touchscreen display (1) with navigation keys (2, 3, 4), stability indicator (5), date (6), time (7), and real-time measurement data including pH (8), mV (9), electrode icon (10), calibration information (11), buffer status (12), and temperature (13). It also indicates measurement settings (14) and username (15). Indicators for direct/autohold measurements (16), log space (17), log start (18), USB status (19), peripheral status (20), and network status (21) are also shown. The rear panel features a power input (24 Vdc), USB-C port, two USB-A ports, an Ethernet port, and inputs for temperature and pH/ORP electrodes, as well as a reference electrode input.]

Menus and Settings

Display Configuration

Users can select preferred display configurations for pH, mV, and relative mV measurements, including Basic, Simple GLP, Full GLP, Graph, and Table views. Each view provides specific levels of detail, from basic readings to comprehensive calibration and electrode status.

User Management

Allows for the creation and management of administrator and standard user accounts, with options to configure specific accessibility settings.

Settings

Network Screen: Configure how measurement logs are shared via Ethernet or Wi-Fi, or disable network connectivity.

Connect & Print Screen: Activate connectivity options for data transfer via FTP, Meterwebserver, or email. Supports connecting to external devices and printers.

System and Log Management

System Screen

Configure essential meter settings such as time, date, language, meter ID, decimal separator, backlight, sound signals, startup instructions, and factory reset.

Info Screen

Displays meter information, including channel serial number and Wi-Fi firmware version.

Log History and Sharing

Access, manage, and share measurement data. Logs can be viewed in table or graph format and exported via USB, FTP, web server, or email.

Log Details

Provides detailed information for each log entry, including user, profile, instrument, serial number, lot information, and GLP data.

Help

Access to on-board help resources, including text and video tutorials for system functionalities.

Measurement Configuration

Customize measurement parameters, resolution, stability criteria, and read modes. Configure temperature settings including source, units (°C/°F/K), manual input, and isopotential point.

Alarm Configuration

Set high and low limit thresholds for measured parameters. The meter triggers visual and audible alarms when these limits are breached.

Logging Options

Configure logging type (Automatic, Manual, Autohold), sampling period, filename, and Sample ID.

Profiles

Create and save custom profiles that store specific measurement units, temperature units, display preferences, and alarm thresholds for different applications.

Specifications

Parameter	HI6221
pH	Range: -2.0 to 20.0, -2.00 to 20.00, -2.000 to 20.000 pH
	Resolution: 0.1 pH, 0.01 pH, 0.001 pH
	Accuracy: ±0.1 pH, ±0.01 pH, ±0.002 pH
mV	Range: ±2000 mV
	Resolution: 1 mV, 0.1 mV
	Accuracy: ±0.2 mV
°C	Range: -20.0 to 120 °C, 253.0 to 393.0 K
	Resolution: 0.1 °C, 0.1 K
	Accuracy: 0.1 °C, 0.1 K
Offset Range (relative mV)	±2000 mV
Calibration	Calibration Points: Up to 5
	Type: Automatic, Semi-automatic, Manual
	Standard Buffers: Hanna Instruments and NIST (pH 1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45)
Custom Buffers	Up to 5
First Calibration Point	User-defined offset or points
Reminder	Daily: 0 m to 23 h 59 m; Periodic: 1 m to 500 days, 23 h 59 m
Temperature Compensation	Automatic, Manual
Modes	Direct, Direct/Autohold
Modes	Reading Stability Criteria: Accurate, Medium, Fast
Isopotential	7.000 or 4.010
Sampling Rate	1000 ms
Views	Basic: Measured value (pH, mV, Rel.mV, Abs.mV), temperature, stability status
	Simple GLP: Basic view + last calibration date, electrode offset, average slope, and electrode condition
	Full GLP: Simple GLP info + calibration point details
	Table: Measurements updated every second
Graph	pH (or mV) and °C vs. time, panned or zoomed
Logging	Type: Automatic, Manual, Autohold
	Logs: 50,000 per file, 1,000,000 points per user
	Automatic Interval: 1, 2, 5, 10, 30 s; 1, 2, 5, 10, 15, 30, 60, 120, 150, 180 m
	Sample ID: Incremental
Export	.csv format
Users	Up to 9
Connections	USB-A: 2 (for keyboard or USB stick)
	USB-C: 1 (for PC communication or USB stick)
	Wi-Fi & Ethernet: FTP, web server log transfer/download, email
RS232	For peripherals
Power	24 Vdc adapter (included)
Environment	0-50 °C, max. 95% RH non-condensing
Dimensions/Weight	205 x 160 x 77 mm / approx. 1.2 kg

Ordering Information

The HI6221 is supplied with the following:

HI1131B refillable glass pH electrode (-5 to 100 °C, BNC)
HI7662-TW temperature probe
pH calibration starter kit (includes buffer sachets for pH 4.01, 7.01, 10.01, cleaning solution, KCl electrolyte, storage solution)
HI764060 electrode holder
Capillary pipette
24 VDC adapter
USB-C to USB-A cable
Quick start guide
Quality certificate

Available Accessories and Solutions:

HI7662-T: Temperature probe for benchtop pH meters
HI7004L: pH 4.01 calibration solution, 500 mL
HI7007L: pH 7.01 calibration solution, 500 mL
HI7010L: pH 10.01 calibration solution, 500 mL
HI7082: 3.5M KCl electrolyte, 30 mL
HI70300M: Storage solution, 230 mL
HI7061L: Cleaning solution, 500 mL

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