Spesifikasi

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.)