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DW-2100P Multi-Parameter Inline Analyzers for Drinking Water
- Product Details
- Specifications
- Drinking Water
- Installation
- Video
DW-2100P Multi-Parameter Inline Analyzers for Drinking Water
The Pyxis DW-2100P is a complete drinking water monitoring panel. It measures ultra-low turbidity, free chlorine, pH and temperature continuously, shows them on a 7″ touch screen and logs them. Pyxis assembles, tests and calibrates it before shipping: connect the sample line, the drains and power, and it is ready to run.
Two Pyxis sensors share one FR-200 flow reservoir: an LT-739 series turbidity sensor and an ST-765SS-FCL sensor for free chlorine, pH and temperature. Both talk to the display over RS-485, so calibration and diagnostics are done on the touch screen.
Two versions, differing only in the turbidity sensor:
- DW-2100P-US (42135) – LT-739 sensor, warm-white LED, USEPA 180.1 (US)
- DW-2100P-EU (42136) – LT-739B sensor, 860 nm infrared LED, ISO 7027
Calm Water, Steady Readings
The FR-200 reservoir slows the sample so air bubbles escape and solids settle before the water reaches the sensors. That is what lets the turbidity reading hold steady down to 0.001 NTU, and the reservoir works from an inlet pressure as low as 0.5 bar, so it can sample at the far end of a network.
Specifications
| Item | DW-2100P-US | DW-2100P-EU |
|---|---|---|
| Part Number | 42135 | 42136 |
| Turbidity Sensor | LT-739 | LT-739B |
| Turbidity Light Source | Warm-white LED | 860 nm infrared LED |
| Turbidity Range | 0.001 – 10 NTU and 10 – 40.00 NTU (dual range) | |
| Turbidity Accuracy | ±0.005 NTU or 2% (below 10 NTU) | |
| Turbidity Repeatability | ±0.001 NTU or 0.5% (below 10 NTU) | |
| Chlorine and pH Sensor | ST-765SS-FCL, bare-gold electrochemical | |
| Free Chlorine Range | 0.01 – 5.00 ppm as Cl₂ | |
| pH Range | 0.01 – 14.00 pH | |
| Measurement Accuracy | Turbidity 0.001 NTU or ±1% of full scale; free chlorine ±0.01 ppm or 1% of full scale, pH compensated to pH 9.0; pH ±0.01 | |
| Resolution | 0.001 NTU; 0.01 ppm; 0.01 pH | |
| Response Time | Turbidity 4 s after immersion; free chlorine T95 ≤ 60 s; pH T95 ≤ 5 s | |
| Methods | USEPA 180.1 and 334.0 (US) | ISO 7027 and ISO 7393 |
| Selectivity | Not selective: other oxidisers add to the chlorine reading | |
| Measurement | Continuous | |
| Display | 7" colour industrial capacitive touch screen | |
| Data Logging | 4 GB, up to 1 million data and event records; USB host for download and screen upgrade | |
| Outputs | Two 4–20 mA; RS-485 Modbus RTU; Modbus TCP | |
| Inputs | Two 4–20 mA; RS-485 Modbus RTU | |
| Network | RJ-45 Ethernet, Modbus TCP | |
| 4G CloudLink™ | Not fitted to these versions | |
| Power Supply | 96 – 260 V AC, 50 – 60 Hz, 200 W, 10 A fuse | |
| Panel Operating Temperature | 4 – 45 °C (40 – 113 °F) | |
| Storage Temperature | Instrument −20 – 55 °C (−4 – 131 °F); sensors 0 – 50 °C (32 – 122 °F) | |
| Sample Temperature | 4 – 40 °C (40 – 104 °F) | |
| Sample Pressure | 0.5 – 2 bar (7.25 – 30 psi) | |
| FR-200 Sample Flow | 1,200 – 1,800 mL/min | |
| FR-200 Connections | ¼" inlet, ⅜" overflow, 20 mm outlet, ½" drain | |
| Relative Humidity | 20 – 90%, non-condensing | |
| Altitude | Below 2,000 m (6,561 ft) | |
| Panel Dimensions | 790 mm H × 450 mm W × 235 mm D | |
| Weight | About 20 kg | |
| Protection | IP65 panel and display; IP67 sensors | |
| Approvals | CE, RoHS | |
| Warranty | 13 months | |
Spare Parts and Accessories
| Item | Part No. |
|---|---|
| LT-739 turbidity sensor, warm-white LED, 0 – 40 NTU | 53221 |
| LT-739B turbidity sensor, 860 nm infrared LED, 0 – 40 NTU | 53225 |
| ST-765SS-FCL free chlorine, pH and temperature sensor | 53607-NFR |
| EH-765 replacement electrode head | 53061 |
| FR-200 dual-sensor flow reservoir | 50781 |
| FRP-200 motorised brush cleaning module for FR-200 | 50700-A17 |
| FRP-200-1 replacement brush | 50700-A15 |
| L-CAL portable liquid (formazin) turbidity calibration kit | 53247 |
| LT-SOLID-CAL 739 solid-state calibration kit (0.1 / 8.0 / 25 NTU) | 53229 |
| LT-SOLID-CAL 739B solid-state calibration kit (0.1 / 8.0 / 25 NTU) | 53239 |
| Turbidity calibration standard, 10.0 NTU, 4 L | 57010-10L |
| Turbidity calibration standard, 30.0 NTU, 4 L | 57010-30L |
| pH calibration pack, pH 4, 7 and 10 | 57007 |
The free chlorine reading is not selective: other oxidisers in the water add to it.
For water authorities, councils and building managers who need to watch disinfection and clarity together: reservoirs and network sampling points, secondary supply such as building tanks, swimming and decorative water, and food and beverage process water.
Key Features
- Turbidity 0.001 – 40 NTU, resolution 0.001 NTU
- Free chlorine 0.01 – 5.00 ppm, pH 0.01 – 14.00, and temperature
- Bare-gold chlorine sensor: no membrane, electrolyte or reagents
- Chlorine reading compensated for pH and temperature up to pH 9
- Flat sensor faces that are quick to wipe clean
- FR-200 reservoir clears bubbles and settles solids
- 7″ colour touch screen, up to 1 million records, USB download
- Two 4–20 mA outputs, RS-485 Modbus RTU, and Modbus TCP over Ethernet
- Turbidity calibration with Pyxis liquid (L-CAL) or solid-state (LT-SOLID-CAL) kits
- Optional FRP-200 automatic brush cleaning module
Mounting and Plumbing
The panel mounts on a wall: 790 mm high, 450 mm wide, 235 mm deep, about 20 kg.
- Sample pressure 0.5 – 2 bar (7.25 – 30 psi), ¼” OD inlet tube
- A rotameter and pressure-reducing valve come loose, to fit if the water quality allows
- Keep the flow steady at 1,200 – 1,800 mL/min
- The 20 mm outlet and the ⅜” overflow both drain by gravity
- Power 96 – 260 V AC, 50 – 60 Hz, 200 W; mains wiring by a licensed electrician
Maintenance
- Monthly: clean the inlet filter and the FR-200 reservoir
- Every 6 months: calibrate pH, turbidity and free chlorine
- Replace the EH-765 electrode head on the chlorine sensor when it wears out
Related Products
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