Sennotech (B&A TDS-1/4) Before & After Digital TDS Meter; 1/4" OD Compression
Before & After Digital TDS Meter
The Sennotech B&A TDS-1/4 offers continuous before-and-after monitoring for reverse osmosis and filtration systems, measuring influent and effluent TDS simultaneously through dual inline probes. The meter calculates removal percentage in real time and uses color-coded flash alerts to indicate when membrane or filter performance drops below 80% rejection, making it easier to know when service is needed without manual testing.
Dual-Probe TDS Monitoring
Pre-Filter TDS Probe
The first 1/4" compression probe installs inline before your RO membrane or filtration stage, continuously measuring source water TDS from 0 to 999 ppm with 1 ppm sensitivity.
Post-Filter TDS Probe
The second probe installs after your membrane or final filter stage, measuring product water TDS to calculate real-time removal percentage based on inlet and outlet values.
Performance Alert System
The 3-digit LCD alternates between inlet TDS, outlet TDS, and removal rate. Green flash confirms rejection above 80 percent. Red flash indicates declining performance and prompts membrane or filter replacement.
Technical Details
| Model | Sennotech B&A TDS-1/4 |
| Measurement Range | 0–999 ppm |
| Accuracy | ±2% |
| Sensitivity | 1 ppm resolution |
| Probe Connection | 1/4" OD compression fittings |
| Display Type | 3-digit LCD with backlight |
| Alert Threshold | Green flash >80%, red flash <80% |
| Control | Button-activated (battery saving mode) |
| Dimensions | 100mm (H) × 40mm (W) × 8mm (T) |
| Mounting | Two clips included |
| Housing Color | White |
Universal 1/4" Tubing Systems
The Sennotech B&A TDS-1/4 fits any residential or commercial RO system, whole-house filter, or under-sink filtration unit using standard 1/4" OD tubing. Generic mounting clips allow installation on most cabinet surfaces, system frames, or wall locations. The meter works with any water treatment technology that benefits from TDS measurement, including reverse osmosis membranes, deionization cartridges, and mixed-bed demineralizers.
Before & After Digital TDS Meter
The Sennotech B&A TDS-1/4 offers continuous before-and-after monitoring for reverse osmosis and filtration systems, measuring influent and effluent TDS simultaneously through dual inline probes. The meter calculates removal percentage in real time and uses color-coded flash alerts to indicate when membrane or filter performance drops below 80% rejection, making it easier to know when service is needed without manual testing.
Dual-Probe TDS Monitoring
Pre-Filter TDS Probe
The first 1/4" compression probe installs inline before your RO membrane or filtration stage, continuously measuring source water TDS from 0 to 999 ppm with 1 ppm sensitivity.
Post-Filter TDS Probe
The second probe installs after your membrane or final filter stage, measuring product water TDS to calculate real-time removal percentage based on inlet and outlet values.
Performance Alert System
The 3-digit LCD alternates between inlet TDS, outlet TDS, and removal rate. Green flash confirms rejection above 80 percent. Red flash indicates declining performance and prompts membrane or filter replacement.
Technical Details
| Model | Sennotech B&A TDS-1/4 |
| Measurement Range | 0–999 ppm |
| Accuracy | ±2% |
| Sensitivity | 1 ppm resolution |
| Probe Connection | 1/4" OD compression fittings |
| Display Type | 3-digit LCD with backlight |
| Alert Threshold | Green flash >80%, red flash <80% |
| Control | Button-activated (battery saving mode) |
| Dimensions | 100mm (H) × 40mm (W) × 8mm (T) |
| Mounting | Two clips included |
| Housing Color | White |
Universal 1/4" Tubing Systems
The Sennotech B&A TDS-1/4 fits any residential or commercial RO system, whole-house filter, or under-sink filtration unit using standard 1/4" OD tubing. Generic mounting clips allow installation on most cabinet surfaces, system frames, or wall locations. The meter works with any water treatment technology that benefits from TDS measurement, including reverse osmosis membranes, deionization cartridges, and mixed-bed demineralizers.
Original: $56.56
-65%$56.56
$19.80Description
Before & After Digital TDS Meter
The Sennotech B&A TDS-1/4 offers continuous before-and-after monitoring for reverse osmosis and filtration systems, measuring influent and effluent TDS simultaneously through dual inline probes. The meter calculates removal percentage in real time and uses color-coded flash alerts to indicate when membrane or filter performance drops below 80% rejection, making it easier to know when service is needed without manual testing.
Dual-Probe TDS Monitoring
Pre-Filter TDS Probe
The first 1/4" compression probe installs inline before your RO membrane or filtration stage, continuously measuring source water TDS from 0 to 999 ppm with 1 ppm sensitivity.
Post-Filter TDS Probe
The second probe installs after your membrane or final filter stage, measuring product water TDS to calculate real-time removal percentage based on inlet and outlet values.
Performance Alert System
The 3-digit LCD alternates between inlet TDS, outlet TDS, and removal rate. Green flash confirms rejection above 80 percent. Red flash indicates declining performance and prompts membrane or filter replacement.
Technical Details
| Model | Sennotech B&A TDS-1/4 |
| Measurement Range | 0–999 ppm |
| Accuracy | ±2% |
| Sensitivity | 1 ppm resolution |
| Probe Connection | 1/4" OD compression fittings |
| Display Type | 3-digit LCD with backlight |
| Alert Threshold | Green flash >80%, red flash <80% |
| Control | Button-activated (battery saving mode) |
| Dimensions | 100mm (H) × 40mm (W) × 8mm (T) |
| Mounting | Two clips included |
| Housing Color | White |
Universal 1/4" Tubing Systems
The Sennotech B&A TDS-1/4 fits any residential or commercial RO system, whole-house filter, or under-sink filtration unit using standard 1/4" OD tubing. Generic mounting clips allow installation on most cabinet surfaces, system frames, or wall locations. The meter works with any water treatment technology that benefits from TDS measurement, including reverse osmosis membranes, deionization cartridges, and mixed-bed demineralizers.
