Measure pH/mV (pH) or mV/Rel. mV (ORP) with Temperature
HI6221 is a streamlined benchtop meter with a large touch screen display, comprised of a housing and an integrated pH / ORP measurement module.
Compact and easy to operate, the benchtop meter is delivered with Hanna Instruments HI1131B double junction combination pH electrode, together with HI7662-TW temperature probe.
HI1131B is a glass body, double junction, refillable pH electrode with an indicating sensor made of High Temperature (HT) glass. The double junction reference and HT glass design allow the HI1131B to be used in a wide variety of applications including samples with metals and elevated temperatures. Probe connection to the unit is secured through a galvanically isolated BNC connection. HI7662-TW stainless steel temperature probe allows the meter to automatically temperature compensate (ATC) pH measurements.
This system responds to a complex range of measurement and monitoring requirements, providing accuracy, reproducibility, and reliability. HI6221 is supplied with an electrode holder that has a flexible arm. The holder can be mounted quickly and provides secure support for electrodes while taking measurements in sample containers.
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 pH/mV (pH) or mV/Rel.mV (ORP) with temperature
- Application-specific profiles allow quick and direct measurement without the need to update the sensor and system settings
- Active log during measurement o Measurement stability indicator (using the Stability Criteria setting)
- Reading modes: direct and direct/autohold
- Temperature compensation can be Automatic (using temperature probe) or set manually
- Audible and/or alarm messages for measurements outside of predefined limits
- Galvanic isolation for pH/ORP measurement
Calibration
- 5-point pH calibration with automatic recognition for standard buffers (Hanna and NIST buffers)
- Choice of standard or custom buffers for calibration
- 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, autohold
- Sample ID for manual and Autohold data
Connectivity features & services
- Transfer logged data to 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
The benchtop unit has a 7-inch color display with 800 x 480p resolution. The capacitive, multi-touch screen supports video playback and data plotting.
This key will enter the system menu where User accounts, System Settings, and Logging can be configured. The Help menu is also accessed on the system menu screen.
HI6221 is supplied with:
- HI1131B pH electrode; HI7662-TW temperature probe
- pH calibration starter kit consisting of:
- pH 4.01 buffer solution sachet (2 pcs.)
- pH 7.01 buffer solution sachet (4 pcs.)
- pH 10.01 buffer solution sachet (2 pcs.)
- HI700601 electrode cleaning solution sachet (2 pcs.)
- HI7082 3.5M KCl electrolyte solution (30 mL)
- HI764060 electrode holder
- Capillary pipette
- 24 VDC power adapter
- USB-C to USB-A cable
- Quick reference guide with instrument quality certificate
| pH Range | -2.0 to 20.0 pH; -2.00 to 20.00 pH; -2.000 to 20.000 pH |
| pH Resolution | 0.1 pH; 0.01 pH; 0.001 pH |
| pH Accuracy | ±0.1 pH; ±0.01 pH; ±0.002 pH (±1 last significant digit) |
| mV Range | ±2000.0 mV |
| mV Resolution | 1 mV; 0.1 mV |
| mV Accuracy | ±0.2 mV ±1 last 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 |
| Relative mV offset range | ±2000.0 mV |
| pH Calibration Calibration points | Up to 5 |
| pH Calibration Type | Automatic; Semiautomatic; Manual |
| pH Calibration Standard buffers | Hanna and NIST pH 1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45 |
| pH Calibration Custom buffers | Up to 5 |
| pH Calibration Custom group | Up to 5 |
| pH Calibration 1st calibration point | Offset or Points (user setting) |
| pH Calibration Reminder | Daily: 0 m in. to 23 hours and 59 m in. Periodic: 1 m in. to 500 days, 23 hours and 59 m in. |
| Temperature Compensation | Automatic or Manual |
| Reading Modes | Direct; Direct/Autohold |
| pH Views Basic | Measurement (pH, mV, Rel.mV, Abs.mV) Temperature, Stability status |
| pH Views Simple GLP | Basic view information pH last calibration date, electrode offset, average slope, and electrode condition (for 24 hours after calibration) |
| pH Views Full GLP | Simple GLP information and calibration point details |
| pH Views Table | Measurements updated every second are displayed in table |
| pH Views Graph (Plot) | pH (or mV) and temperature versus time graph can be panned or zoomed (pinch-to-zoom technology) |
| Logging Type | Automatic, Manual, Autohold |
| Logging Number of records | 50 000 maximum per file / Stores at least 1 000 000 data points per user |
| Logging Automatic interval | 1, 2, 5, 10, 30 seconds 1, 2, 5, 10, 15, 30, 60, 120, 150, 180 minutes |
| Logging Sample ID | Incremental mode |
| Logging Export option | .csv file format |
| Users | Users Up to 9 users and adm in. account (default) |
| Connectivity USB-A | 2 ports for keyboard input or USB thumb drive |
| Connectivity USB-C | 1 port for PC connectivity and USB-C type thumb drive |
| Connectivity Wi-Fi & Ethernet | FTP Web server | Log transfer and download |
| Connectivity 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 (2.65 lbs.) |
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