Spesifikasi HI 991404
PH Meter
The HI-991404 combo meter is designed for continuous, high accuracy pH, EC/TDS and temperature measurements. This microprocessor indicator continuously monitors the three most important nutrient parameters in hydroponics, greenhouses and horticultural applications with a single instrument.
The HI-991404 is supplied with an advanced, non-clogging double junction pH electrode and a rugged conductivity probe that will withstand even the most aggressive environments. The instrument is powered by a 12VDC transformer and easy to install and use, making it ideal for all continuously monitoring applications.
Specifications
| Range - pH | 0.0 to 14.0 pH | |
| Range - EC | 0 to 3999 µS/cm | |
| Range - TDS | 0 to 2000 ppm (mg/L) | |
| Range - Temperature | 0.0 to 60.0°C (32 to 140°F) | |
| Resolution - pH | 0.1 pH | |
| Resolution - EC | 1 µS/cm | |
| Resolution - TDS | 1 ppm | |
| Resolution - Temperature | 0.1°C (0.1°F) | |
| Accuracy - pH | ±0.1 pH | |
| Accuracy - EC/TDS | ±2% F.S. | |
| Accuracy - Temperature | ±0.5°C (±1°F) | |
| Temperature Compensation | pH: automatic EC/TDS: automatic with ß adjustable from 0.0 to 2.4%/°C |
|
| Calibration | pH: automatic, 1 or 2 points with 2 sets of memorised buffers; EC/TDS: automatic, 1 point |
|
| pH Electrode | HI 1293D (included) | |
| EC/TDS Probe | HI 7630 (fixed) | |
| EC/TDS Conversion Factor | adjustable from 0.45 to 1.00 | |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% | |
| Input Impedance | 1012 Ohm | |
| Power Supply | 12 Vdc power adapter (included) | |
| Dimensions | 160 x 105 x 31 mm (6.3 x 4.1 x 1.2") | |
| Weight | 190 g (6.7 oz.) |