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The HI9814 is a slim, lightweight, and waterproof portable meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature with a single amplified probe. The meter operation is simplified with two buttons. One is used for on/off and for calibration while the other is used to switch between the measurement modes. The HI9814 has advanced features including a selectable EC to TDS conversion factor (0.5 — 500 ppm and 0.7 — 700 ppm).
The HI9814 portable meter features a large multi-level LCD which displays both pH, EC or TDS and temperature readings simultaneously. The pH readings are displayed with a 0.01 resolution and an accuracy of +/-0.01 pH while the EC and TDS readings are displayed with a 0.01 mS/cm and 10 ppm (mg/L) resolution and 2% full-scale accuracy. The EC range of the HI9814 is from 0.00 to 6.00 mS/cm and TDS is from 0 to 3000 ppm using the 0.5 conversion factor. The EC to TDS conversion factor is selectable 0.5 (500) and 0.7 (700 ppm). A built-in temperature sensor allows for automatic temperature compensated measurements of EC and TDS. The HI9814 has many advanced features that are found in more expensive portable instrumentation including automatic calibration, buffer/standard recognition and temperature compensation. The LCD screen has indicators for calibration status and stability, as well as on-screen tutorial messages. The battery percent level is displayed at start up alerting the user to the remaining battery power that is available. The supplied HI1285-7 is a polypropylene body, amplified pH electrode with a built-in EC/TDS and temperature sensors. The amplifier for the pH electrode prevents interference from humidity and sources of electrical noise include circulating pumps, motors, and ballasts for grow lights. The HI9814 is a versatile meter designed for hydroponics, greenhouse, and agriculture applications.
Features at-a-glance
3 sensors in a single probe
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
Waterproof
Designed to withstand the humidity of a growing environment
Wide pH Range
pH range is from 0.00 to 14.00 pH
Selectable EC to TDS conversion factor
Choice of either a 0.5 or 0.7 conversion factor
0.5 (500 CF) conversion factor is for an EC reading of 1000 μS/cm = 500 ppm
0.7 (700 CF) conversion factor is for an EC reading of 1000 μS/cm = 700 ppm
- Automatic Temperature Compensation
All readings are compensated for variations in temperature
Temperature displayed in oC or oF along with pH, EC or TDS reading
Stability indicator
Meter displays a clock tag that will disappear when the reading has achieved stability
HOLD button
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
- Low Battery Indicator
When the level is below 5%, the battery symbol on the LCD blinks to indicate a low battery condition.
- Auto-off
Selectable time before meter will automatically shut off to conserve battery life. Options are after 8 minutes, 60 minutes , or disabled.
Specifications pH pH Range 0.00 to 14.00 pH pH Resolution 0.01 pH pH Accuracy ±0.01 pH pH Calibration automatic, at one or two points using standard buffers (pH 4.01, 7.01,10.01), one point calibration using quick calibration solution pH Temperature Compensation automatic EC/TDS EC Range 0.00 to 6.00 mS/cm EC Resolution 0.01 mS/cm EC Accuracy ±2% FS EC Calibration automatic, one-point at 1.41 mS/cm, one-point calibration using quick calibration solution TDS Range 0 to 3000 ppm (500 CF), 0 to 3999 ppm (700 CF) TDS Resolution 10 ppm (mg/L) TDS Accuracy ±2% F.S. EC/TDS Temperature Compensation automatic Temperature Correction Coefficient β = 1.9%/°C EC to TDS Conversion Factor 0.5 (500 ppm) or 0.7 (700 ppm) General Meter pH/EC Probe HI1285-7 pH/conductivity probe with built-in temperature sensor, DIN connector and 1 m (3.3″) cable Automatic Shut-Off after 8 minutes, 60 minutes, disabled Battery Type/Life 1.5V (3) AAA / approximately 500 hours of continuous use Environment -5 to 50°C (23 to 122°F), RH max 100% Dimensions 152 x 58 x 30 mm (6.0 x 2.3 x 1.2”) Weight 205 g (7.2 oz.) Ordering Information HI9814 is supplied with HI1285-7 multiparameter probe, HI50036-0 Quick Cal buffer solution sachet (3), HI700661 pH electrode cleaning solution sachet for agriculture (3), 1.5 AAA batteries (3), and instructions.
Технические характеристики
0.00 to 14.00 pH
