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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
- 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
Help section for meter guidance
- Video support presentation of main functionalities
Specifications
|
pH
|
Range | -2.0 to 20.0 pH; -2.00 to 20.00 pH; -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 (±1 last significant digit) | |||
|
mV
|
Range | ±2000.0 mV | ||
| Resolution | 1 mV; 0.1 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 | ||
| Resolution | 0.1 °C / 0.1 °F / 0.1 K | |||
| Accuracy | ±0.2 °C / ±0.4 °F / ±0.2 K | |||
| Relative mV off set range | ±2000.0 mV | |||
|
pH Calibration
|
Calibration points | Up to 5 | ||
| Type | Automatic; Semiautomatic; Manual | |||
| Standard buffers | Hanna and NIST pH 1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45 | |||
| Custom buffers | Up to 5 | |||
| Custom group | Up to 5 | |||
| 1st calibration point | Off set or Points (user setting) | |||
| Reminder | Disabled; Daily: 0 min. to 23 hours and 59 min.; Periodic: 1 min. to 500 days, 23 hours and 59 min. | |||
| Temperature Compensation | Automatic or Manual | |||
|
Reading
|
Modes | Direct; Direct/Autohold | ||
| Stability criteria | Accurate; Medium; Fast | |||
| Isopotential | 7.000 or 4.010 | |||
| Sampling rate | 1000 ms | |||
|
pH Views
|
Basic | Measurement (pH, mV, Rel.mV, Abs.mV) Temperature, Stability status | ||
| Simple GLP | Basic view information, Last calibration date, electrode off set, average slope, and electrode condition | |||
| Full GLP | Simple GLP information and calibration point details | |||
| Table | Measurements updated every second are displayed in table | |||
| Graph (Plot) | pH (or mV) and temperature versus time graph can be panned or zoomed (pinch-to-zoom technology) | |||
|
Logging
|
Type | Automatic, Manual, Autohold | ||
| 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 admin. account (default) | |||
|
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 | |||
| Wi-Fi & Ethernet | FTP Web server Log transfer and download |
|||
| 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.) | |||
| Ordering Information | HI6221 is supplied with HI1131B pH electrode; HI7662-TW temperature probe; pH calibration star ter 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; capillar y pipette; 24 VDC power adapter; USB-C to USB-A cable; quick reference guide with instrument quality certificate. | |||
