The HI98129 is a highly accurate, waterproof pH meter that can also measure EC/TDS in the low range (0 to 3999 µS/cm EC/ 0 to 2000 ppm TDS) and temperature. This floating, waterproof combination tester has an easy to read, LCD and an automatic shut-off. In addition, pH and EC/TDS readings are automatically temperature compensated (ATC) to prevent temperature-related variations in your measurements. For EC/TDS readings, the EC/TDS conversion factor (CONV) is selectable by the user, as well as the temperature compensation coefficient β (BETA).
Replaceable pH Electrode Cartridge
The HI98129 tester features an easy to replace pH electrode cartridge with an extendable cloth junction. The extendable cloth junction helps increase electrode life and the replaceable pH cartridge means that this tester does not need to be thrown away when the pH sensor is exhausted. Also, the sturdy, snap-in connector means there are no pins to bend or break!
High Accuracy EC/TDS Graphite Probe
The graphite conductivity probe provides greater accuracy because it cannot be contaminated by salt deposits in the solution. The exposed temperature sensor provides fast response times and guarantees highly accurate temperature compensated readings.
Features at-a-glance
- 3 sensors in a single meter
pH electrode with extractable junction
Amperometric EC/TDS sensor
Exposed temperature probe for faster EC/TDS readings
Designed to float if accidently dropped in sample
pH range is from 0.00 to 14.00 pH
- Selectable EC to TDS conversion factor
Choice of either a 0.45 or 1.0 conversion factor
- Automatic Temperature Compensation
All readings are compensated for variations in temperature
Temperature displayed in ℃ or ℉ along with pH, EC or TDS reading
Meter displays a clock tag that will disappear when the reading has achieved stability
Freezes reading on the display to allow recording of measurement
- BEPS (Battery Error Prevention System
Meter will automatically shut off if there is not enough power to get an accurate measurement
- Battery % level at startup
When the level is below 5%, the battery symbol on the LCD blinks to indicate a low battery condition.
Auto-off feature automatically shuts off meter after 8 minutes of non-use to maximize battery life
Specifications
| SKU |
HI98129 |
| Name |
Combo pH/Conductivity/TDS Tester (Low Range) - HI98129 |
| pH Range |
0.00 to 14.00 pH |
| pH Resolution |
0.01 pH |
| pH Accuracy |
±0.05 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 |
| EC Range |
0 to 3999 µS/cm |
| EC Resolution |
1 µS/cm |
| EC Accuracy |
±2% F.S. |
| EC Calibration |
automatic, one-point at: 1413 µS/cm |
| TDS Range |
0 to 2000 ppm (mg/L) |
| TDS Resolution |
1 ppm (mg/L) |
| TDS Accuracy |
±2% F.S. |
| TDS Calibration |
automatic, one-point at: 1382 ppm (mg/L) |
| EC/TDS Temperature Compensation |
automatic with β adjustable from 0.0 to 2.4% / °C |
| EC to TDS Conversion Factor |
0.45 to 1.00 |
| Temperature Range |
0.0 to 60.0°C / 32.0 to 140.0°F |
| Temperature Resolution |
0.1°C / 0.1°F |
| Temperature Accuracy |
±0.5°C /±1°F |
| pH Electrode |
HI73127 (replaceable; included) |
| Battery Type/Life |
1.5V (4) / approx. 100 hours of continuous use, auto-off after 8 minutes of non-use |
| Environment |
0 to 50°C (32 to 122°F); RH max 100% |
| Dimensions |
163 x 40 x 26 mm (6.4 x 1.6 x 1.0”) |
| Weight |
100 g (3.5 oz.) |
Ordering Info
HI98129 is supplied with HI73127 pH electrode and HI73128 electrode removal tool, batteries (4 x 1.5V) and instructions.
Manuals
Combo pH/Conductivity/TDS Tester (Low Range) - HI98129
GST and Shipping charges are extra
