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Home>All Products>Products>Portable Meters>Multiparameter>Portable Meters - EC with Amperometric Probes>Portable pH/EC/TDS/Temperature Meter – HI9811-51
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Portable pH/EC/TDS/Temperature Meter – HI9811-51

The HI9811-51 is an economical, wateproof, portable meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature (℃) with a single probe. The meter operation is simplified with dedicated buttons for measurement modes to be be displayed on the LCD and knobs for single point calibration of pH and EC/TDS. The HI9811-51 is most suitable for agricultural, greenhouse and hydroponic applications.

  • 3 in 1 probe with pH, EC/TDS and temperature sensors
  • Amplified pH electrode for immunity to electrical noise including from ballasts and pumps
  • Large LCD with instructions

710 AED

Estimated delivery: 6 - 7 October

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SKU:HI9811-51

Details

The HI9811-51 portable meter features a large LCD which displays either pH, EC, TDS or temperature readings along with tutorial instructions. The HI9811-51 is a simplistic pH/EC/TDS meter that is calibrated manually to a single point with the use of two trimmers. pH is calibrated to pH 7.01 while EC/TDS is calibrated to either 1.41 mS/cm (1413 µS/cm) or 1500 ppm. The LCD screen has battery life indicator as well as on-screen tutorial messages.The supplied HI1285-51 probe 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 electrical noise from common sources including from motors, ballasts or pumps. The HI9811-51 is a versatile meter best suited for agricultural, greenhouse and hydroponic applications.

HI1285-51 polypropylene body amplified pH electrode with built in EC/TDS and temperature sensors

The HI9811-51 is supplied with a polypropylene body pH/EC/TDS/temperature probe. The pH, EC, TDS, and temperature sensors are housed in a single body that connects to the meter with a DIN connector. This probe is specially engineered with a fiber junction and gel electrolyte to produce a fast response with reduced contamination.

Amplified pH electrode

The pH electrode circuit has a built in amplifier that will reduce the effects of electrical noise on the high impedance pH measurement. Examples of sources of electrical noise include motors, ballasts, and pumps which are common in greenhouses.

Amperometric EC/TDS sensor

The EC/TDS readings are performed by an amperometric sensor. An alternating voltage is applied to the sensor and the amount of current that passes between the two stainless steel pins is dependent upon the amount of salts (fertilizer) present. A greater amount of salt present results in an increase in conductance.

Polypropylene body

The polypropylene body houses all the sensors in a single body design and is durable. The probe is gel filled for maintenance free operation. It does not have to be refilled periodically.

  • 3 sensors in a single probe
  • Pre-amplified pH electrode for resistance to electrical noise
  • Gel filled maintenance free pH electrode

Features at-a-glance

  • Water Resistant
  • Automatic Temperature Compensation
    • All readings are compensated for variations in temperature
  • Low Battery Indicator

Specifications

SKU HI9811-5
Name Portable pH/EC/TDS/Temperature Meter – HI9811-5
pH Range 0 to 14 pH
pH Resolution 0.1 pH
pH Accuracy ±0.1 pH
pH Calibration manual, 1-point through offset trimmer
EC Range 0.00 to 6000 µS/cm
EC Resolution 10 µS/cm
EC Accuracy ±2% F.S.
EC Calibration manual, 1-point through slope trimmer
TDS Range 0 to 3000 ppm (mg/L)
TDS Resolution 10 ppm (mg/L)
TDS Accuracy ±2% F.S.
TDS Calibration manual, 1-point through slope trimmer
EC/TDS Temperature Compensation automatic from 0 to 50°C (32 to 122°F)
Temperature Correction Coefficient β = 2% /°C
EC to TDS Conversion Factor 0.5 ppm (mg/L) = 1 µS/cm
Temperature Range 0.0 to 70.0°C
Temperature Resolution 0.1°C
Temperature Accuracy ±0.5°C
Multi-parameter Probe HI1285-5 combination, amplified pH/EC/TDS/temperature probe with built-in temperature sensor, 8-pin DIN connector and 1 m (3.3 in.) cable
Battery Type/Life 9V / approximately 150 hours of continuous use
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 145 x 80 x 36 mm (5.7 x 3.1 x 1.4”)
Weight 230 g (8.1 oz.)

Ordering Info

HI9811-5 is supplied with HI1285-5 multiparameter probe, HI70007 pH 7.01 buffer solution sachet, HI70442 1500 ppm calibration solution sachet, HI70031 1413 µS/cm calibration solution sachet, HI700661 electrode cleaning solution sachets (2), 9V battery, instructions and rugged carrying case.

Manuals

Portable pH/EC/TDS/Temperature Meter – HI9811-5

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