Main Features
4
4. MAIN FEATURES
• IP67 waterproof and floating design
• No user calibration needed
• Rugged and doubles as a stirring stick
• Auto‑on when placed in nutrient water / Auto‑off set to 30 seconds
• Low‑battery warning
• Readings displayed by 24 brightly lit LED lights
• Conductivity scales and operational instructions printed on the tester body
• Easy to clean (detachable crown‑shaped cap)
5. OPERATIONAL GUIDELINES
5.1. REMOVE BATTERY FILM
1. Rotate the battery cap counter clockwise to remove the protective film.
2. Tightly screw the battery cap back on.
LED lights on the side light up along the conductivity scale (and back), and display battery level status:
4200
3000
6.0
100 % battery level
420
300
0.6
10 % battery level
5.2. EC / TDS MEASUREMENT
Place the tester in nutrient water and stir.
LED lights on the side indicate measurement status as per examples given here:
2240
1600
3.2
reading not stable
2240
1600
3.2
reading stable
3.0
2240
1600
3.2
2380
1700
3.4
read value 3.3 mS/cm
Note
: A change in conductivity level resets the auto-off timer. To take another
reading, simply remove the tester from water then place it back in the water.
140
100
0.2
reading under range
4200
3000
6.0
reading over range
