HI2550 pH/mV/EC/TDS/NaCl/°C Meter - 2 Channel
HI 2550 is a 2 channel instrument that measures up to 7 parameters. With this single laboratory bench meter you can measure pH, ORP, ISE, conductivity (EC), TDS, NaCl percentage and temperature.
Utilizing an external temperature probe, pH readings are automatically temperature compensated. To ensure a higher level of precision, pH calibrations are up to five calibration points, chosen from the seven available memorized buffers.
This instrument can measure using ORP electrodes (pH channel input), due to it’s capability to measure mV with a resolution up to 0.1 mV and also use ISE electrodes on the mV scale (pH channel input).
EC measurements can be compensated relative to a selected reference temperature. The EC calibration mode allows you to chose from among six recognized conductivity standards and perform a single-point calibration. The most suitable EC and TDS range for your application is automatically selected. The HI 2550 also includes the ability to set and lock the range manually.
This instrument provides GLP capabilities that allows for the storage and retrieval of all data regarding pH, rel mV, EC and NaCl calibration and sample measurement as well as data regarding the maintenance and status of the electrode.
With a built-in logging function, measurements are stored in non volatile memory, and can be transferred to a PC through the USB port. Users can manually log up to 200 records and interval log up to 500 records.
Order Information: HI 2550-02 (230V) are supplied with HI 1131B pH electrode, HI 76310 conductivity/TDS probe, HI 7662 temperature probe, HI 76404N electrode holder, HI 70004 pH 4.01 buffer solution sachet, HI 70007 pH 7.01 buffer solution sachet, HI 7071S electrolyte solution (30 mL), 12 VDC adapter and instruction manual.
Specification :
| Range | pH | -2.0 to 16.0 pH; -2.00 to 16.00 pH; -2.000 to 16.000 pH |
| ISE & ORP | ±999.9 mV (ISE & ORP); ±2000 mV (ISE & ORP) | |
| EC | 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; up to 500.0 mS/cm actual conductivity | |
| TDS | 0.00 to 14.99 ppm; 15.0 to 149.9 ppm; 150 to 1499 ppm; 1.50 to 14.99 g/L; 15.0 to 100.0 g/L; up to 400.0 g/L actual TDS (with 0.80 factor) | |
| NaCl | 0.0 to 400.0% NaCl | |
| Temperature | –20.0 to 120.0 ºC (pH, EC range) | |
| Resolution | pH | 0.1 pH; 0.01 pH; 0.001 pH |
| ISE & ORP | 0.1 mV (±999.9 mV); 1 mV (± 2000 mV) | |
| TDS | 0.01 ppm; 0.1 ppm; 1 ppm; 0.01 g/L; 0.1 g/L | |
| NaCl | 0.1% NaCl | |
| Temperature | 0.1 ºC | |
| Accuracy @ 20°C | pH | ±0.01 pH; ±0.002 pH |
| ISE & ORP | ±0.2 mV (±999.9 mV); ±1 mV (±2000 mV) | |
| EC | ±1 % reading (±0.05 µS/cm or 1 digit, whichever greater) | |
| TDS | ±1% of reading (±0.03 ppm or 1 digit, whichever greater) | |
| NaCl | ±1% of reading | |
| Temperature | ±0.4 ºC (excluding probe error) | |
| Calibration | pH | 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 |
| EC | two point 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 | |
| NaCl | one point with HI 7037L standard (optional) | |
| Probes | pH | HI 1131B glass body pH electrode with BNC connector and 1 m (3.3') cable (included) |
| EC | HI 76310 platinum four ring conductivity/TDS probe with built-in temperature sensor and 1 m (3.3') cable (included) | |
| Temperature | HI 7662 temperature probe with 1 m (3.3') cable (included) | |
| Relative mV Offset | ±2000 mV | |
| Temperature Compensation | manual or automatic from: -20.0 to 120.0 ºC (pH range) -20.0 to 120.0 ºC (EC range) (can be disabled on conductivity range to measure actual conductivity) | |
| Cond. Temp. Coefficient | 0.00 to 6.00 %/ºC (for EC and TDS only) default value is 1.90 %/ºC | |
| TDS Factor | 0.40 to 0.80 (default value is 0.50) | |
| Input Impedance | 1012 ohms | |
| PC Connectivity | opto-isolated USB | |
| Log on Demand | 200 records | |
| Log Interval Feature | 500 records; 5, 10, 30 sec and 1, 2, 5, 10, 15, 30, 60, 120, 180 min stability logging (“StAb”) | |
| Power Supply | 12 VDC | |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing | |
| Dimensions | 235 x 218 x 108 mm (9.2 x 8.5 x 4.2”) | |
| Weight | 1.3 Kg (2.9 lb); kit with holder 2.1 Kg (4.6 lb.) |