The HI991301 is designed to measure pH, conductivity (EC), total dissolved solids (TDS), and temperature with a single probe. From setup to calibration all operations are performed with just two buttons. The meter is waterproof and rated for IP 67 conditions.
The HI12883 pre-amplified multiparameter probe features an easy-to-clean sensor and a cloth junction that can be renewed to increase the life of the probe. To ensure against interference from transient electrical noise, a solid-state amplifier is integrated into the HI12883.
User-selectable features include different TDS factors from 0.45 to 1.00 and a range of temperature coefficients (β) from 0.0 to 2.4% for greater consistency and reproducibility. Standardized buffer recognition values are also selectable.
These instruments easily fit in the palm of your hand and the bottom probe connection ensures the electrode cable doesn’t get in your way. The large, multi-level LCD displays the primary reading, temperature, and calibration guides simultaneously.
The HI12883 multiparameter probe includes pH, EC/TDS, and temperature measurement. A solid-state pre-amplifier is integrated into the probe to protect against interference from transient electrical noise.
pH electrode – Preamplified for resistance to electrical noise including that generated by pumps and ballast
EC/TDS sensor – amperometric two pole design
Temperature – NTC sensor for accurate temperature measurement and compensation
Designed to withstand the humidity of a growing environment
pH range is from 0.00 to 14.00 pH
Choice of either a 0.5 or 0.7 conversion factor
0.5 (500 CF) conversion factor is for an EC reading of 10 mS/cm = 5 ppt
0.7 (700 CF) conversion factor is for an EC reading of 10 mS/cm = 7 ppt
All readings are compensated for variations in temperature
Temperature displayed in oC or oF along with pH, EC or TDS reading
| Weight | 1.22 kg |
|---|---|
| Parameter | Conductivity/TDS, pH |
| pH Accuracy | ±0.02 pH; ±0.1 pH |
| pH Calibration | at one or two points with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18), automatic |
| pH Range | -2.00 to 16.00 pH; -2.0 to 16.0 pH |
| pH Resolution | 0.01 pH; 0.1 pH |
| EC Accuracy | ±2% f.s. |
| EC Calibration | automatic, one-point at 12.88 mS/cm |
| EC Range | 0.00 to 20.00 mS/cm |
| EC Resolution | 0.01 mS/cm |
| TDS Accuracy | ±2% f.s. |
| TDS Calibration | automatic |
| TDS Range | 0.00 to 10.00 ppt (g/L) |
| TDS Resolution | 0.01 ppt (g/L) |
| Temperature Accuracy | ±0.5°C; ±1°F |
| Temperature Range | ‐5.0 to 105.0 °C; 23.0 to 221.0 °F |
| SKU | HI991301 |
| Name | Portable Waterproof pH/EC/TDS Meter (High Range) – HI991301 |
| pH Range | -2.00 to 16.00 pH; -2.0 to 16.0 pH |
| pH Resolution | 0.01 pH; 0.1 pH |
| pH Accuracy | ±0.02 pH; ±0.1 pH |
| pH Calibration | automatic, at one or two points with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18) |
| pH Temperature Compensation | automatic 0 to 50 °C; 32 to 122 °F |
| pH CAL Check (electrode diagnostics) | probe condition indicator |
| pH Sensor Check | yes |
| mV Range | ±825 mV (pH‐mV) |
| mV Resolution | 1 mV (pH‐mV) |
| mV Accuracy | ±1 mV (pH‐mV) |
| EC Range | 0.00 to 20.00 mS/cm |
| EC Resolution | 0.01 mS/cm |
| EC Accuracy | ±2% F.S. |
| EC Calibration | automatic, one-point at 12.88 mS/cm |
| TDS Range | 0.00 to 10.00 ppt (g/L) |
| TDS Resolution | 0.01 ppt (g/L) |
| TDS Accuracy | ±2% F.S. |
| TDS Calibration | automatic |
| EC/TDS Temperature Compensation | automatic |
| Temperature Correction Coefficient | β selectable from 0.0 to 2.4 %/ °C with 0.1 increments |
| EC to TDS Conversion Factor | selectable from 0.45 to 1.00 with 0.01 increments |
| Temperature Range | ‐5.0 to 105.0 °C; 23.0 to 221.0 °F |
| Temperature Resolution | 0.1°C; 0.1°F |
| Temperature Accuracy | ±0.5°C; ±1°F |
| pH/EC Probe | HI12883 PVC body, pre-amplified multiparameter probe with internal temperature sensor, quick connect DIN connector and 1m cable |
| Automatic Shut-Off | user selectable: after 8 min, 60 min or disabled |
| Battery Type/Life | 1.5V (3) AAA / approximately 600 hours of continuous use |
| IP Protection | IP67 |
| Environment | 0 to 50°C (32 to 122°F); RH max 100% |
| Dimensions | 154 x 63 x 30 mm (6.1 x 2.5 x 1.2”) |
| Weight | 196 g (6.91 oz.) |
HI991301 is supplied complete with HI12883 pH/EC/temperature probe, pH 4.01 calibration buffer sachet (1), pH 7.01 calibration buffer solution sachet (1), HI70030 12.88 mS/cm calibration solution sachet (1), HI70038 6.44 ppt calibration solution sachet (1), HI700601 electrode cleaning solution sachet (2), 100 mL beaker (1), batteries, calibration certificates for both meter and probe, instruction manual, and rugged thermoformed carrying case.
To empower customers to achieve quality
by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
