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HI2550-01 Multiparameter pH/ORP and EC/TDS/Salinity Benchtop Meter |
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pH Specifications |
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pH Range |
–2.0 to 16.0 pH, -2.000 to 16.000 pH, -2.00 to 16.00 pH |
pH Resolution |
0.1, 0.01, 0.001 pH |
pH Accuracy ( @25 ºC/77 ºF ) |
±0.01 pH, ±0.002 pH |
pH Calibration |
Up to five point calibration, seven standard buffers available ( 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45 ), and two custom buffers |
pH Temp. Compensation |
Automatic or manual from -20.0 to 120.0 °C |
mV Range |
±999.9 mV; ±2000 mV |
mV Resolution |
0.1 mV; 1 mV |
mV Accuracy |
±0.2 mV; ±1 mV |
Relative mV Offset Range |
±2000 mV |
EC Specifications |
|
EC Range |
Up to 500.0 mS/cm actual* conductivity, 0.00 to 29.99 μS/cm, 30.0 to 299.9 μS/cm, 300 to 2999 μS/cm, 3.00 to 29.99 mS/cm, 30.0 to 200.0 mS/cm |
EC Resolution |
0.01 μS/cm, 0.1 μS/cm, 1 μS/cm, 0.01 mS/cm, 0.1 mS/cm |
EC Accuracy ( @25 ºC/77 ºF ) |
±1 % of reading ( ±0.05 μS/cm or 1 digit, whichever is greater ) |
EC Calibration |
One point slope calibration; six buffers available: 84.0, 1413 μS/cm; 5.00, 12.88, 80.0, 111.8 mS/cm; one point offset: 0.00 μS/cm |
EC Temp. Compensation |
Automatic or manual from -20.0 to 120.0 °C, or disabled |
TDS Specifications |
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TDS Range |
Up to 400.0 g/L actual* TDS ( with 0.80 factor ), 0.00 to 14.99 ppm ( mg/L ), 15.0 to 149.9 ppm ( mg/L ), 150 to 1499 ppm ( mg/L ), 1.50 to 14.99 g/L, 15.0 to 100.0 g/L |
TDS Resolution |
0.01 ppm, 0.1 ppm, 1 ppm, 0.01 g/L, 0.1 g/L |
TDS Accuracy ( @25 ºC/77 ºF ) |
±1 % of reading ( ±0.03 ppm or 1 digit, whichever is greater ) |
TDS Factor |
0.40 to 0.80 ( default value is 0.50 ) |
Salinity Specifications |
|
Salinity Range |
0.0 to 400.0 % NaCl |
Salinity Resolution |
0.1 % NaCl |
Salt Accuracy ( @25 ºC/77 ºF ) |
±1 % of reading ( excluding probe error ) |
Salinity Calibration |
One point, with HI7037 calibration solution ( optional ) |
Temperature Specifications |
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Temperature Range |
-20.0 to 120.0 °C ( -4.0 to 248.0 °F ) |
Temperature Accuracy |
±0.4 °C ( ±0.8 °F ) ( excluding probe error ) |
Temperature Resolution |
0.1 °C ( 0.1 °F ) |
Temperature Coefficient |
0.00 to 6.00 %/°C ( for EC and TDS only; default value is 1.90 %/°C |
Additional Specifications |
|
pH Electrode |
HI1131B glass body pH electrode with BNC connector and 1 m ( 3.3’ ) cable ( included ) |
EC Probe |
HI76310 platinum four-ring EC/TDS probe and 1 m ( 3.3’ ) cable ( included ) |
Temperature Probe |
HI7662 temperature probe, stainless steel with 1 m ( 3.3’ ) cable ( included ) |
Logging |
200 samples, log-on-demand |
Logging Interval |
500 records; 5, 10, 30 sec and 1, 2, 5, 10, 15, 30, 60, 120, 180 min stability logging |
Connectivity |
Opto-isolated USB |
Environment |
0 to 50 °C ( 32 to 122 °F ), RH max 95 % non-condensing |
Input Impedance |
10¹² Ohms |
Power Supply |
12 VDC adapter ( included ) |
Dimensions |
235 x 222 x 109 mm ( 9.2 x 8.7 x 4.3” ) |
Weight |
1.3 kg ( 2.9 lb ); kit with holder 2.1 kg ( 4.6 lb ) |
Ordering Information |
HI2550 is supplied with HI1131B pH electrode, HI76310 EC/TDS probe, HI7662 temperature probe, HI76404N electrode holder, HI70004 pH 4.01 buffer solution sachet, HI70007 pH 7.01 buffer solution sachet, HI7071 Electrolyte Fill Solution, 3.5M KCl + AgCl ( 30 mL ), 12 VDC adapter and instruction manual. |