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HM Digital Premier Water Testing Instruments
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HM Digital TDS-4TMA Aquarium TDS Meter with Digital Thermometer
Freshwater Aquarium TDS Testing with Temperature Readings The HM Digital TDS-4TMA is a handheld total dissolved solids (TDS) meter with a built-in Celsius thermometer for freshwater aquariums, aquaculture and ponds. It also helps you monitor the performance of reverse osmosis (RO) and deionization (DI) water filtration systems.
During routine water checks, use the hold function to keep the reading on screen after removing the meter from the water. Its compact design makes it easy to keep alongside your aquarium maintenance supplies.
Key Features
Measures TDS from 0 to 9990 ppm (mg/L).
Built-in digital thermometer displays temperature in Celsius only.
Hold function locks the reading on screen.
Automatic shutoff after 10 minutes of non-use conserves battery power.
Automatic temperature compensation from 1 to 50°C.
Factory calibrated with a 342 ppm NaCl solution; recalibration is possible using a mini-screwdriver.
Includes two 1.5V button cell batteries and aquarium-specific packaging.
Specifications
Brand: HM Digital
Model: TDS-4TMA
TDS range: 0–9990 ppm
TDS resolution: 1 ppm from 0–999 ppm; 10 ppm from 1000–9990 ppm, indicated by the x10 icon
Accuracy: ±2%
Temperature range: 0–80°C
Temperature resolution: 0.1°C
EC-to-TDS conversion: NaCl, average factor 0.5
Power: Two 1.5V LR44 or equivalent button cell batteries, included
Battery life: 1000 hours of usage
Dimensions: 14 × 2.3 × 1.5 cm
Meter weight: 34 g (1.2 oz)
UPC: 891144000199
Recommended Uses Use for freshwater aquarium and pond maintenance, aquaculture water checks, and monitoring RO/DI filtration performance. The thermometer displays Celsius, not Fahrenheit.
