Inline Dual TDS Meter, DM-1 TDS Monitor
HM Digital DM-1 Dual Inline TDS Meter
Measure and monitor your water quality in real time—before and after filtration.
Designed for all water filtration and reverse osmosis systems. Ideal for RO/DI setups, coolers, watermakers, and more.
Why Choose the DM-1 TDS Monitor?
- Real-Time Water Quality Insight: Instantly see the Total Dissolved Solids (TDS) levels of your input and output water.
- Know When to Change Filters: Monitor performance and get a clear indication when it's time to replace membranes or DI resin.
- Reliable and Easy to Use: Highly accurate digital readout with automatic shut-off to preserve battery life.
What’s Included
- Dual Inline TDS Display: Shows both incoming (feed) and outgoing (product) water TDS levels simultaneously.
- Quick-Connect T-Fittings: Includes two 1/4″ tee fittings for fast, easy installation.
- Pre-Installed Batteries: Comes ready to use with 2 x 1.5V LR44 button cell batteries included.
Compatible With:
- Reverse Osmosis (RO) Systems
- Deionization (DI) Filters
- Coolers, watermakers, and most inline water filtration systems
- Can be adapted to 3/8″ or 1/2″ systems (optional fittings required)
Specifications
- Measurement Range: 0–9990 ppm
- Accuracy: ±2%
- Resolution: 1 ppm (0–999), 10 ppm (1000–9990, with x10 indicator)
- Calibration: Factory calibrated with 342 ppm NaCl solution; adjustable with screwdriver
- Cable Length: 24.5″ including sensors
- Battery Life: Approx. 1000 hours continuous use
- Power Source: 2 x LR44 button cell batteries (included)
- Dimensions: 7.6 x 2 x 4.7 cm (3 x 0.8 x 1.9 in.)
- Weight: 79.4 g (2.8 oz.)
- Origin: Made in Korea by HM Digital
- Shipping: Free Australia-wide
Installation Tip
To ensure accurate readings and avoid damage during installation:
- Install the sensor probes straight and securely into the water line.
- Avoid over-tightening or angling the fittings, which could affect sensor performance or lead to leaks.
Usage Guidelines
- Use only with clean water lines free of debris or biofouling.
- Monitor both feed and product water regularly to track system health.
- Replace filters or membranes as soon as TDS readings indicate performance drop.
Keep your water system performing at its best with the HM Digital DM-1—your eyes on water purity at all times.
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Estimated Delivery:Sep 02 - Sep 06
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Next Day Dispatch
Inline Dual TDS Meter, DM-1 TDS Monitor
HM Digital DM-1 Dual Inline TDS Meter
Measure and monitor your water quality in real time—before and after filtration.
Designed for all water filtration and reverse osmosis systems. Ideal for RO/DI setups, coolers, watermakers, and more.
Why Choose the DM-1 TDS Monitor?
- Real-Time Water Quality Insight: Instantly see the Total Dissolved Solids (TDS) levels of your input and output water.
- Know When to Change Filters: Monitor performance and get a clear indication when it's time to replace membranes or DI resin.
- Reliable and Easy to Use: Highly accurate digital readout with automatic shut-off to preserve battery life.
What’s Included
- Dual Inline TDS Display: Shows both incoming (feed) and outgoing (product) water TDS levels simultaneously.
- Quick-Connect T-Fittings: Includes two 1/4″ tee fittings for fast, easy installation.
- Pre-Installed Batteries: Comes ready to use with 2 x 1.5V LR44 button cell batteries included.
Compatible With:
- Reverse Osmosis (RO) Systems
- Deionization (DI) Filters
- Coolers, watermakers, and most inline water filtration systems
- Can be adapted to 3/8″ or 1/2″ systems (optional fittings required)
Specifications
- Measurement Range: 0–9990 ppm
- Accuracy: ±2%
- Resolution: 1 ppm (0–999), 10 ppm (1000–9990, with x10 indicator)
- Calibration: Factory calibrated with 342 ppm NaCl solution; adjustable with screwdriver
- Cable Length: 24.5″ including sensors
- Battery Life: Approx. 1000 hours continuous use
- Power Source: 2 x LR44 button cell batteries (included)
- Dimensions: 7.6 x 2 x 4.7 cm (3 x 0.8 x 1.9 in.)
- Weight: 79.4 g (2.8 oz.)
- Origin: Made in Korea by HM Digital
- Shipping: Free Australia-wide
Installation Tip
To ensure accurate readings and avoid damage during installation:
- Install the sensor probes straight and securely into the water line.
- Avoid over-tightening or angling the fittings, which could affect sensor performance or lead to leaks.
Usage Guidelines
- Use only with clean water lines free of debris or biofouling.
- Monitor both feed and product water regularly to track system health.
- Replace filters or membranes as soon as TDS readings indicate performance drop.
Keep your water system performing at its best with the HM Digital DM-1—your eyes on water purity at all times.
Discover more in our FAQ
What types of industrial water treatment products do you offer?
We offer a comprehensive range of industrial water treatment solutions, including:
Filtration Systems – Effectively removes sediment, chlorine, and other impurities to enhance water purity and system longevity.
Reverse Osmosis Membranes – High-performance purification technology that eliminates dissolved solids, contaminants, and impurities for ultra-pure water.
Membrane Housings – Durable, high-pressure enclosures engineered to protect and optimize the performance of RO membranes.
Filter Cartridges – Precision-engineered sediment, carbon, and specialty filters designed to target specific contaminants for enhanced water treatment efficiency.
Chemical Dosing Systems – Precise chemical treatment for water.
Media FRP Pressure Vessels – High-pressure tanks for filtration media.
Ion Exchange Resins – Softening and demineralization solutions.
Water Instruments – pH meters, conductivity meters, and TDS testers.
Rotameter Flow Meters – Accurate flow measurement devices.
Watermaker Parts – Spare parts for marine and industrial watermakers.
Water Quality Test Kits – Portable and lab testing solutions.
How do I know which product is right for my application?
Choosing the right product depends on:
Water quality parameters (TDS, pH, hardness, contaminants)
Flow rate and pressure requirements
Industry-specific needs (food processing, pharmaceuticals, HVAC, etc.)
If you’re unsure, our technical support team can help you select the best solution.
Do you offer bulk pricing for large industrial orders?
Yes! We provide bulk discounts and custom pricing for high-volume orders. Contact us for a personalized quote.
How long does shipping take?
Shipping times depend on location and stock availability. Standard delivery is 3–7 business days for most regions. Expedited shipping options are available upon request.
What is your return policy?
We offer a 14-day return policy from the date of delivery. If you are not completely satisfied with your purchase, you can return the item for a refund or exchange, provided it meets our return conditions.
What happens if I receive a damaged or incorrect item?
If your item arrives damaged or you receive the wrong product, please contact us immediately at support@waterfilter.net.au with photos and your order number. We will send a replacement or issue a refund as per our return policy..
How long does shipping take?
Shipping times depend on location and stock availability. Standard delivery is 3–7 business days for most regions.
Expedited shipping options are available upon request.
Do you ship internationally?
Yes, we offer international shipping for most of our industrial water treatment products. Contact us for custom shipping quotes and lead times.