Environmental & Scientific Instruments Co.
Environmental & Scientific Instruments Co.


Contact Us

Plot – 123, Industrial Area, Phase – II, Industrial Area Phase 2, Panchkula, Haryana - 134113, India

Mobile : +91-9216626616

Phone : +91-172-5033251

Fax : +91-172-2591407

Cond./TDS/Salt/Temp Water Proof Meter - 7021

Conductivity/TDS/Salt/Temp Waterproof Tester - 7021 is a microprocessor based tester used to determine Conductivity, TDS, Temperature, and Salts in a liquid. This tester has wide applications in agriculture, anti-freeze recycling, aquarium, boiler, chemical industry, cooling tower, drinking water, fish farming, food industry, garden husbandry, hydroponics, laboratory usage, plating industry, swimming pool & spa, water treatment etc.

It has rugged design for field use. It floats on water. It has Automatic Temperature Compensation (ATC) and is degree oC/oF switchable. It displays Maximum/Minimum value and data hold on large LCD display. It has low battery and consumption indicator along with auto shut off after 10 minutes of non use.


  • Microprocessor Based
  • IP-57 Water Proofing
  • Floats on Water
  • Large LCD Display
  • Automatic Temperature Compensation (ATC)
  • Data Hold, Max/Min and oC/ oF Switchable
  • Low Battery and Consumption Indicator
  • Auto Power-Off after 10 minutes


Calibration 1-point (screw Type)
Warranty 1 Year
Resolution 10 Ppm
Measure Range 0-19990 Ppm
Power Source 4x1.5v (lr44)
Colour Black

Additional Information

Product Code 7021


Display Large LCD to display respective parameters, Battery level, ATC & Temperature
Range TDS : 0 to 1300 ppm
1.30 - 13.00 ppt
Cond : 0 to 2000 μS,
2.00 - 20.00 mS
Salt : 0 to 1000 ppm
1.00 to 12.00 ppt
Temp : 0 to 90.0oC
32 to 194.0oF
Resolution TDS/Salt: 1 ppm/0.01 ppt, Cond.: 1 μS/0.01mS, Temp.: 0.1oC/oF
Accuracy TDS/Cond/Salt: ± 2% of F.S., Temp: ±0.2oC +1 digit
Temperature Compensation Automatic Temperature Compensation (ATC) with temperature display
Temperature Coefficient 2% per oC
Water Proof As per IP – 57 water proofing standard
TDS Factor 0.67
Power DC 1.5 V x 4 battery (UM-4/AAA) Auto power off after 10 minutes
Dimensions Meter: 195 x 40 x 36 mm, Kit : 230 x 205 x 50 mm
Weight Meter: 135 g with battery Kit: 780 g
Others Features Auto Power-off after 10 minutes, Hold function to freeze reading, Push button calibration, Water-proof IP-57, Temperature coefficient- 2% per oC, Self-Diagnostics message for low battery
ACCESSORIES Standard Calibration Solution (50 ml), Battery, Lanyard, Instruction Manual and Carrying Case