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JENCO INSTRUMENTS was established more than 40 years ago on the idea that innovative water quality instruments should be available at competitive prices and their mission is to bring innovation to anyone who works with analytical instruments.

Since the launching of the world's first portable digital pH meter in 1975, Jenco Instruments has continued to focus only on building water quality instruments for measuring pH, ORP, conductivity, TDS, salinity, resistivity, dissolved oxygen, ion, turbidity and temperature. 

This single minded-focus is combined with Jenco's obsession with finding the best balance between quality and value - whether it is the simplest testers or the most advanced, gesture-operated, WIFI-enabled benchtop meters.   

EC/Salinity/TDS/Temp Portable Meter

VisionPlus EC3840

EC/Salinity/TDS/Temp Portable Meter


Features : 
  • Simultaneous display of conductivity, salinity or TDS with temp. measurements
  • Selectable cell constants for true wide range readings
  • Adjustable TDS coefficient, reference temp. , temp. coefficient for most flexible and accurate TDS readings
  • Automatically finds the most suitable display range for your measurements
  • Accepts 4-wire conductivity cell
  • Uses one conductivity cell for conductivity, salinity and TDS measurements
  • IP67 rated body for water-proof (up to 1 meter) and dust-proof operation
  • Removable shock-resistant rubber boot
  • RoHS compliant
  • Low battery indicator


Range :

Conductivity : 0~499.9uS/cm; 500~4999uS/cm; 5.00~49.99mS/cm; 50.0~200.0mS/cm
Salinity : 0.0~70.0ppt
Temperature : -10.0~90.0°C

Resolution :

Conductivity : 0.1uS/cm; 1uS/cm; 0.01mS/cm; 0.1mS/cm
Salinity : 0.1ppt
Temperature : 0.1°C

Accuracy :

Conductivity : ±1% of reading plus 2uS/cm; ±1% of reading plus 5uS/cm; ±1% of reading plus 0.05mS/cm; ±2.5% of reading plus 0.5mS/cm
Salinity : ±0.2%FS
Temperature : ±0.2°C or ±0.4%FS, whichever is greater 

Reference Temperature : From 15.0 to 25.0°C, default at 25.0°C
Temperature Coefficient : From 0.00 to 4.00%, default at 1.91%
TDS Constant : From 0.30 to 1.00, default at 0.65
Electrode Type : Four wire conductivity cell
ATC : Thermistor, 10kΩ at 25°C
Calibration Backup : Yes
Automatic Temperature Compensation : Yes 
Display : Large LCD
Power : 4 x 1.5V AAA battery 
Auto Power Off : After 20 minutes of inactivity
Battery life : >100 hours
Ambient Temperature Range : From 0~50°C
Case : IP-67 waterproof with rubber shockproof protective boot
Weight / Dimensions (W x D x H) : 230 grams (including batteries) / 75cm x 157 cm x 35cm 

Accessories :

3840NP : Four wire conductivity cell with mini 6 DIN connector K=0.5 (0~200mS)


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