Laboratory Research Grade Benchtop pH/mV and EC/TDS/Salinity/Resistivity Meter - HI5521
The HI5521 is an advanced research grade benchtop pH/mV/EC/TDS/Salinity/Resistivity meter that is completely customizable with a large color LCD, capacitive touch keys, and USB port for computer connectivity. The HI5521 is rich in features including data logging, alarm limits, comprehensive GLP, and many more while retaining simplicity in use with both dedicated key for routine operation and virtual keys that guide the user through setup options. The HI5521 ensures confidence in pH measurements with the exclusive Hanna Instruments CAL Check™ feature that alerts the user to potential problems during calibration including if the buffer is contaminated or the probe needs to be cleaned.
- Capacitive touch keypad
- Two independent channels
- CAL Check™ Probe Diagnostics
The HI5521 is an advanced research grade benchtop pH/ORP and EC/TDS/Salinity/Resistivity meter that is completely customizable with a large color LCD, capacitive touch keys, and USB port for computer connectivity.
The HI5521 is a two-channel meter that allows for simultaneous measure of pH or ORP on one channel and EC or related parameters on the other. Channel 1 has a BNC connection for use with the expansive line of pH and ORP electrodes that Hanna Instruments offers. The meter is supplied with the HI1131B glass body, double junction, combination pH electrode that operates over a wide temperature range from 0 to 100 °C. All readings are automatically compensated for temperature variations with the separate HI7662-T temperature probe or from the built in temperature sensor of the conductivity probe on Channel 2. The HI5521 is supplied with the HI76312 four-ring conductivity probe that operates over a wide range from 0.000 μS/cm to 1000.0 mS/cm*. The meter can be set to auto-ranging in which the meter chooses the appropriate conductivity range from seven ranges or fixed range in which the meter will only display reading in μS/cm or mS/cm. All readings are automatically compensated for temperature variations with a built in temperature sensor. The temperature correction coefficient is adjustable from 0.00 to 10.00 %/°C.
As a pH meter the HI5521 can be calibrated up to five points with a choice of eight pre-programmed buffers or five custom buffers. The HI5521 features Hanna’s exclusive CAL Check™ to alert the user of potential problems during the pH calibration process. Indicators displayed during calibration include “Electrode Dirty/Broken” and “Buffer Contaminated.” The overall probe condition based on the offset and slope characteristic of the electrode is displayed as a percentage after calibration is complete. The calibration data including date, time, buffers used, offset and slope can be accessed at any time along with the current measurement by selecting the Good Laboratory Practice (GLP) display option.
As an EC/TDS/Salinity/Resistivity meter the HI5521 can be calibrated up to four points with a choice of six pre-programmed conductivity standards or user defined custom standards. Resistivity, TDS, Practical Salinity (PSU) and Natural Seawater Scale are calibrated through conductivity. The % NaCl is calibrated to single point with the HI7037 salinity standard. The calibration data including date, time, and standards used, offset and cell factor can be accessed at any time along with the current measurement by selecting the Good Laboratory Practice (GLP) display option.
For the measurement of high purity water used in pharmaceutical manufacturing, the HI5521 is programmed with the three stages of the USP <645> method. Once a stage is met a report is generated and can be saved. Up to 200 reports can be stored and with the USB port be transferred to a Windows® compatible computer.
Three selectable logging modes are available: automatic, manual and AutoHold logging. Up to 100,000 data points can be recorded in 100 lots with 50,000 records max/lot on each channel and exported to a computer for data review and storage.
Highly Customizable User Interface – The user interface of the HI5521 allows the user to show measurements in various modes: basic measurement with or without GLP information, real-time graphing, and logging data. Calibration stability criteria can be adjusted from fast, moderate, and accurate. Programmable alarm limits can be set to inside or outside allowable limits.
Color Graphic LCD – The HI5521 features a color graphic LCD with on-screen help, graphic, and custom color configurations. The display allows for real-time graphing and the use of virtual keys provide for an intuitive user interface.
Capacitive Touch – The HI5521 features sensitive capacitive touch buttons for accurate keystrokes when navigating menus and screens. There are four dedicated keys that are used for routine operations including calibration and switching measurement modes and four virtual keys that change based upon use. The capacitive touch technology ensures the buttons never get clogged with sample residue.
Four Ring Conductivity Probe – All readings are performed with the HI76312 four-ring conductivity probe that has a built in temperature sensor for automatic temperature correction. The four rings are made with platinum and the body of the electrode is made of Polyetherimide (PEI) plastic that is resistant to many harsh chemicals. The four-ring design allows for this probe to be used over a wide range of measurements.
Choice of Calibration – Automatic buffer recognition, semiautomatic, and direct manual entry pH calibration options are available for calibrating up to five points, from a selection of eight standard buffers and up to five custom buffers. For the conductivity channel the calibration can be set to automatic standard recognition or user entry along with a choice of single or multi-point. Calibration can be performed up to four points when multi-point is selected.
CAL Check™ – CAL Check™ alerts users to potential problems during the calibration of the pH electrode. Indicators include “Electrode Dirty/Broken,” “Buffer Contaminated,” electrode response timeand the overall probe condition as a percentage that is based on the offset and slope characteristics.
GLP Data – HI5521 includes a GLP Feature thatallows users to view calibration data and calibration expiration information at the touch of a key. Calibration data include date, time, standards used for calibration.
Data Logging – Three selectable logging modes are available on the HI5521: automatic, manual, and AutoHold logging. Automatic and manual logs up to 100 lots with 50,000 records max/lot, with up to 100,000 total data points. Automatic logging features the option to save data according to sampling period and interval.
Data Transfer – Data can be transferred to a PC with USB cable and HI92000 software (both sold separately).
Contextual Help – Contextual help is always available through a dedicated “HELP” key. Clear tutorial messages and directions are available on-screen to quickly and easily guide users through setup and calibration. The help information displayed is relative to the setting/option being viewed.
CAL Check alert to potential problems during calibration
Comprehensive GLP Data
Real time logging
|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 ± 1LSD|
|pH Calibration||Up to five-point calibration, eight standard buffers available (pH 1.68, 3.00, 4.01, 6.86, 7.01,9.18, 10.01, 12.45), and five custom buffers|
|pH Temperature Compensation||automatic or manual from -20.0 to 120.0 °C|
|mV Range||±2000.0 mV|
|mV Resolution||0.1 mV|
|mV Accuracy||±0.2 mV ± 1LSD|
|mV Relative Offset||±2000.0 mV|
|EC Range||0.000 to 9.999 μS/cm, 10.00 to 99.99 μS/cm, 100.0 to 999.9 μS/cm, 1.000 to 9.999 mS/cm, 10.00 to 99.99 mS/cm, 100.0 to 1000.0 mS/cm actual EC*|
|EC Resolution||0.001 μS/cm, 0.01 μS/cm, 0.1 μS/cm, 1 μS/cm, 0.001 mS/cm, 0.01 mS/cm, 0.1 mS/cm|
|EC Accuracy||±1% of reading (±0.01 μS/cm)|
|EC Calibration||automatic standard recognition (0.000 μS/cm, 84.00 μS/cm, 1.413 mS/cm, 5.000 mS/cm, 12.88 mS/cm, 80.00 mS/cm, 111.8 mS/cm) or user standard; single point or multi-point calibration|
|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)|
|TDS Resolution||0.001 ppm, 0.01 ppm, 0.1 ppm, 1 ppm, 0.001 ppt, 0.01 ppt, 0.1 ppt|
|TDS Accuracy||±1% of reading (±0.01 ppm)|
|EC/TDS Temperature Compensation||disabled, linear and non-linear (natural water)|
|Temperature Correction Coefficient||0.00 to 10.00 %/°C|
|Reference Temperature||5.0 to 30.0 °C|
|Cell Constant||0.0500 to 200.00|
|Cell Type||4 cells|
|Salinity (% NaCl) Range||0.0 to 400.0 %|
|Salinity (% NaCl) Resolution||0.1 %|
|Salinity (% NaCl) Accuracy||±1% of reading|
|Salinity (PSU) Range||0.00 to 42.00 psu|
|Salinity (PSU) Resolution||0.01|
|Salinity (PSU) Accuracy||±1% of reading|
|Salinity (PSU) Calibration||1 point (with HI7037 standard)|
|Salinity Range||0.00 to 80.00 ppt|
|Salinity Resolution (ppt)||0.01|
|Salinity Accuracy (ppt)||±1% of reading|
|Resistivity Range||1.0 to 99.9 Ω•cm; 100 to 999 Ω•cm; 1.00 to 9.99 KΩ•cm; 10.0 to 99.9 KΩ•cm; 100 to 999 KΩ•cm; 1.00 to 9.99 MΩ•cm; 10.0 to 100.0 MΩ•cm|
|Resistivity Resolution||0.1 Ω•cm; 1 Ω•cm; 0.01 KΩ•cm; 0.1 KΩ•cm; 1 KΩ•cm; 0.01 MΩ•cm; 0.1 MΩ•cm*|
|Resistivity Accuracy||±2% of reading (±1 Ω•cm)|
|Temperature Range||-20.0 to 120.0 ºC**; -4.0 to 248.0 ºF**; 253.15 to 393.15 K**|
|Temperature Resolution||0.1 °C, 0.1 °F, 0.1 K|
|Temperature Accuracy||±0.2 °C; ±0.4 °F; ±0.2 K (without probe)|
|Input Channels||2 (pH/mV; Conductivity/Resistivity/ TDS/Salinity)|
|pH Electrode||HI1131B glass body pH electrode with BNC connector and 1 m (3.3’) cable (included)|
|EC/TDS Probe||HI76312 platinum, four-ring EC/TDS probe with and 1 m (3.3’) cable (included)|
|Temperature Probe||HI7662-T stainless steel temperature probe with 1 m (3.3’) cable (included)|
|Logging Type||Automatic, Manual, AutoHold|
|Logging Memory||Up to 100 lots, 50,000 records max/lot; maximum 100,000 data points / channel|
|Logging Interval||14 selectable between 1 second and 180 minutes|
|GLP||yes (GLP Channel 1:Electrode offset / slope, calibration points, calibration time stamp, GLP Channel 2:Probe cell constant / offset, reference temperature, compensation coefficient, calibration points, calibration time stamp)|
|Calibration Timeout Reminder||yes|
|USP Compliant||USP <645> Application|
|Profiles||up to 10, 5 each channel|
|Display||Color Graphic LCD 240 x 320 pixels, 8 keys capacitive touch keyboard|
|Power Supply||12 VDC adapter (included)|
|Environment||0 to 50°C (32 to 122°F; 273 to 323 K), RH max 95% non-condensing)|
|Dimensions||160 x 231 x 94 mm (6.3 x 9.1 x 3.7”)|
|Weight||1.2 Kg (2.6 lbs|
|Ordering Information||HI5521 is supplied with HI1131 pH electrode, HI7662-T temperature probe, HI76312 conductivity probe, HI76404W electrode holder, HI70004 pH 4.01 buffer solution sachet, HI70007 pH 7.01 buffer solution sachet, HI700601 electrode cleaning solution sachet (2), HI7082 3.5M KCl electrolyte solution (30 mL), 12 VDC power adapter and instructions.|
|Notes||*Uncompensated conductivity (or TDS) is the conductivity (or TDS) value without temperature compensation.
**Reduced to actual probe limits