Specifications 

HI 5521 

HI 5522 

   pH 

 Range 

-2.0 to 20.0 pH;    -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 ±1 LSD 

 Calibration 

automatic, up to five-point calibration, eight standard buffers available, and five custom buffers 

 Temperature 

 Compensation 

automatic or manual from -20.0 to 120.0°C/-4.0 to 248.0°/253.15 to 393.15K 

   mV 

 Range 

±2000 mV 

±2000 mV 

 Resolution 

0.1 mV 

0.1 mV 

 Accuracy 

±0.2 mV ±1 LSD 

±0.2 mV ±1 LSD 

   ISE 

 Range 

— 

1 x 10-7 to 9.99M concentration 

 Resolution 

— 

0.1; 0.01; 0.001 concentration 

 Accuracy 

— 

±0.5% (monovalent ions); ±1% (divalent ions) 

 Calibration 

— 

automatic, up to five-point calibration, five fixed standard solutions available for each measurement unit, and 5 user defined standards 

   Temperature** 

 Range 

-20.0 to 120°C; -4.0 to 248.0°F; 253.15 to 393.15K 

-20.0 to 120°C; -4.0 to 248.0°F; 253.15 to 393.15K 

 Resolution 

0.1°C; 0.1°F; 0.1K 

0.1°C; 0.1°F; 0.1K 

 Accuracy 

±0.2°C ; ±0.4°F; ±0.2K (without probe) 

±0.2°C; ±0.4°F; ±0.2K (without probe) 

   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 absolute EC* 

 Resolution 

0.001 μS/cm; 0.01 μS/cm; 0.1 μS/cm; 0.001 mS/cm; 0.01 mS/cm; 0.1 mS/cm 

 Accuracy 

±1% of reading (±0.01 μS/cm) 

±1% of reading (±0.01 μS/cm) 

 Cell Constant 

0.0500 to 200.00 

0.0500 to 200.00 

 Cell Type 

4 cells 

4 cells 

 Calibration 

automatic standard recognition, user standard single point / multi-point calibration 

automatic standard recognition, user standard single point / multi-point calibration 

 Calibration 

 Reminder 

yes 

yes 

 Temperature

 Coefficient 

0.00 to 10.00 %/°C 

0.00 to 10.00 %/°C 

 Temperature

 Compensation 

disabled, linear and non-linear (natural water) 

disabled, linear and non-linear (natural water) 

 Reference

 Temperature 

5.0 to 30.0°C 

5.0 to 30.0°C 

 Profiles 

up to 10, 5 each channel 

up to 10, 5 each channel 

 USP

 Compliant 

yes 

yes 

   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 ppt 

0.001 ppm; 0.01 ppm; 0.1 ppm; 0.001 ppt; 0.01 ppt; 0.1 ppt 

 Accuracy 

±1% of reading (±0.01 ppm) 

±1% of reading (±0.01 ppm) 

   Resistivity 

 Range 

1.0 to 99.9 Ω•m; 100 to 999 Ω•m; 1.00 to 9.99 kΩ•m; 10.0 to 99.9 kΩ•m; 100 to 999 kΩ•m; 1.00 to 9.99 MΩ•m; 10.0 to 100.0 MΩ•m 

 Resolution 

0.1 Ω•m; 1 Ω•m; 0.01 kΩ•m; 0.1 kΩ•m; 1 kΩ•m; 0.01 MΩ•m; 0.1 MΩ•m 

 Accuracy 

±2% of reading (±1 Ω•m) 

±2% of reading (±1 Ω•m) 

   Salinity 

 Range 

practical scale: 0.00 to 42.00 psu; natural sea water scale: 0.00 to 80.00 ppt; percent scale: 0.0 to 400.0% NaCl 

 Resolution 

0.01 for practical scale/natural sea water scale; 0.1% for percent scale 

 Accuracy 

±1% of reading 

±1% of reading 

 Calibration 

percent scale—one-point (with HI7037 standard) 

percent scale—one-point (with HI7037 standard) 

   Additional  

   Specifications 

 pH Electrode 

HI1131B glass body pH electrode with BNC connector and 1 m (3.3’) cable (included) 

 EC 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) 

 Input Channel

 (s) 

1 pH/ORP + 1 EC 

1 pH/ORP/ISE + 1 EC 

 GLP 

cell constant, reference temperature/coefficient, calibration points, calibration time stamp, probe offset for conductivity 

 Logging 

record : 100,000 data point storage/channel, up to 100 lots with max. 50,000 records/lot; interval: settable between 1 second and max log time of 180 minutes; type: automatic, manual, AutoHOLD; additional: 200 records USP; 200 records incremental methods (HI5522) 

 Display 

color graphic LCD with on-screen help, graphing, and custom color configuration 

 PC

 Connection 

USB 

 Power Supply 

12 VDC adapter (included) 

 Environment 

0 to 50°C (32 to 122°F; 273 to 323K) RH max 95% non-condensing 

 Dimensions /

 Weight 

160 x 231 x 94 mm (6.3 x 9.1 x 3.7”) / 1.2 kg (2.64 lbs.) 

   제품구성 

 HI5521-02 (230V), and HI5522-02 (230V) are supplied with HI76312 EC/TDS probe, HI1131B  pH electrode, HI7662-T temperature probe, 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), 

 HI76404N electrode holder, 12 VDC adapter and instructions.