-
Linear: appropriate when it is assumed that the temperature coefficient of variation has the same value for all measurement temperatures.
-
Standard: appropriate for high-purity water measurements and documented in ASTM Standard D5391-14. This setting should be used for >1Mohm.cm resistivity measurements.
-
Natural: appropriate for natural ground, well, or surface water (or water with similar composition) in accordance with ISO7888 standard.
The result is reliable electrolytic conductivity (EC), TDS (Total Dissolved Solids), resistivity, or Seawater Salinity in percent, psu, or ppt units. TDS is a calculated value based on the conductivity of the solution (TDS = factor x EC 25). A TDS factor is a conversion factor used to change an EC measurement to a ppm measurement.
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 μS/cm, mS/cm (Conductivity); Ω·cm, kΩ·cm, MΩ·cm (Resistivity); ppm, ppt (TDS); ppt, PSU, % (Salinity) 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 or set manually
- Audible and/or alarm messages for measurements outside of predefined limits
- Galvanic isolation for conductivity measurement
Calibration
- Standard single point salinity calibration in 100% salinity standard, with the reading salinity scale set to %
- Standard single or multiple conductivity calibration with standards
- 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
Conductivity
|
Range | 0.000 to 9.999 μ S/cm; 10.00 to 99.99 μ S/cm; 100.0 to 999.9 μ S/cm; 1.000 to 9.999 mS/cm; 10.00 to 99.99 mS/cm; 100.0 to 1000.0 mS/cm | |||
Resolution | 0.001 μ S/cm; 0.01 μ S/cm; 0.1 μ S/cm; 0.001 mS/cm; 0.01 mS/cm; 0.1 mS/cm | ||||
Accuracy | ±1 % of reading (±0.01 μ S/cm) | ||||
Resistivity
|
Range | 1.0 to 99.9 Ω ·cm; 100 to 999 Ω ·cm; 1.00 to 9.99 K Ω ·cm; 10.0 to 99.9 K Ω ·cm; 100 to 999 K Ω ·cm; 1.00 to 9.99 M Ω ·cm; 10.0 to 100.0 M Ω ·cm | |||
Resolution | 0.1 Ω ·cm; 1 Ω ·cm; 0.01 K Ω ·cm; 0.1 K Ω ·cm; 1 K Ω ·cm; 0.01 M Ω ·cm; 0.1 M Ω ·cm | ||||
Accuracy | ±1 % of reading (±1 Ω ·cm) | ||||
Total Dissolved Solids (TDS)
|
Range | 0.000 to 9.999 ppm; 10.00 to 99.99 ppm; 100.0 to 999.9 ppm; 1.000 to 9.999 ppt; 10.00 to 99.99 ppt; 100.0 to 400.0 ppt; actual TDS (with 1.00 factor) | |||
Resolution | 0.001 ppm; 0.01 ppm; 0.1 ppm; 0.001 ppt; 0.01 ppt; 0.1 pp | ||||
Accuracy | ±1 % of reading (±0.01 ppm) | ||||
Salinity
|
Range | 0.00 to 42.00 PSU – Practical Scale 0.00 to 80.00 ppt – Natural Sea Water 0.0 to 400.0 % – Percent Scale |
|||
Resolution | 0.01 for Practical Scale / Natural Sea Water 0.1 % for Percent Scale |
||||
Accuracy | ±1 % of reading | ||||
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 | ||||
Conductivity
Calibration |
Calibration points | Auto standard recognition / User standard, Single Point / Multi Point calibration | |||
Standard solutions | 84.00 μS/cm, 1.413 mS/cm, 5.000 mS/cm, 12.88 mS/cm, 80.00 mS/cm, 111.8 mS/cm | ||||
Reminder | Disabled Daily: 0 min. to 23 hours and 59 min. Periodic: 1 min. to 500 days, 23 hours and 59 min. |
||||
Resistivity Calibration | Uses Conductivity | ||||
Salinity Calibration | 1 point for Percent Scale | ||||
Temperature Compensation | Automatic or Manual | ||||
Reading
|
Modes | Direct Direct/Autohold |
|||
Stability criteria | Accurate Medium Fast |
||||
Sampling rate | 1000 ms | ||||
EC Views
|
Basic | Measurement (EC, Resistivity, TDS, Salinity, Temperature) Stability status |
|||
Simple GLP | Basic view information Last calibration date, offset |
||||
Full GLP | Simple GLP information and calibration point details | ||||
Table | Measurements updated every second are displayed in table | ||||
Graph (Plot) | Measurement 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 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 |
||||
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: | HI6321 is supplied with HI7631233 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. |