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Model 3175 - Water Treatment Controller
The Model 3175 is a microprocessor based, touchscreen, menu driven, Water Treatment Controller designed for use in cooling towers, chill loops, boilers and condensate systems. The Model 3175 provides for conductivity tracking and control, flow monitoring and chemical injection. The Model 3175 includes a 4-20Ma input that can be used for remote conductivity, or pH, or traced chemistry control, or makeup conductivity for cycles of concentration control, or as one of several other different inputs. The Model 3175 can be operated with or without the use of the conductivity input.
Cooling Towers

Boilers

Features & Benefits
Model 3175 Controller
Core Features
- 7 inch capacitive touchscreen
- Single circuit board design for reliability
- Large, shallow NEMA 4X rated enclosure
- Removable power cord and conduit receptacles
- Easy access wiring compartment
Control & Monitoring
- Five user-configurable relays for:
- Conductivity control
- Chemical addition
- Scheduled biocide feed
- Ball valve delay for motorized valve control
- Intuitive programming interface
- Compatible with Lakewood 2000 Series programs
Input/Output Capabilities
- Two water meter inputs
- Two drum switch inputs
- Conductivity input
- Flow switch input
- 4-20 mA output
- 4-20 mA input
Advanced Features
- Data logging via micro SD card
- Email alarm notifications
- Versatile application support:
- Cooling towers
- Chill loops
- Boilers
- Condensate systems
- Adaptable to different applications with appropriate sensors
Key Benefits
- Modern connectivity and data logging
- Responsive touchscreen interface
- Simple configuration
- Cost-effective solution
- Updated processor technology
- Five relay system
- All features included standard:
- 4-20mA output/input
- Biocide control
- No additional options needed
Dimensional drawings
Alternate configurations
| SKU | Description | List price | - |
|---|---|---|---|
| LWI-1269921 | 1269921 | 3175 Controller - Cooling Tower, Boiler, & Process - Controller Only | $2,901.80 | |
| LWI-1269934 | 1269934 | 3175 Controller - Cooling Tower - Conductivity Sensor - Tee | $3,375.60 | |
| LWI-1269935 | 1269935 | 3175 Controller - Cooling Tower - Conductivity Sensor - Flow Switch w/ Left Exit | $3,489.82 | |
| LWI-1269936 | 1269936 | 3175 Controller - Cooling Tower - Conductivity Sensor - Flow Switch w/ Right Exit | $3,496.80 | |
| LWI-1269937 | 1269937 | 3175 Controller - Cooling Tower - Conductivity Sensor - Flow Switch w/ Left Exit | $3,676.65 | |
| LWI-1269938 | 1269938 | 3175 Controller - Cooling Tower - Conductivity Sensor - Flow Switch w/ Right Exit | $3,676.65 | |
| LWI-1269939 | 1269939 | 3175 Controller - Cooling Tower - Conductivity & Fluorometer - Flow Switch w/ Left Exit | $8,104.80 | |
| LWI-1269940 | 1269940 | 3175 Controller - Cooling Tower - Conductivity & pH Sensors - Flow Switch w/ Left Exit | $5,326.80 | |
| LWI-1269941 | 1269941 | 3175 Controller - Cooling Tower - Conductivity & ORP Sensors - Flow Switch w/ Left Exit | $5,326.80 | |
| LWI-1269942 | 1269942 | 3175 Controller - Cooling Tower - Conductivity & Cycles of Concentration - Flow Switch w/ Left Exit | $5,208.00 | |
| LWI-1269943 | 1269943 | 3175 Controller - Boiler - SR2 Conductivity Sensor - No Plumbing | $3,447.60 | |
| LWI-1269944 | 1269944 | 3175 Controller - Boiler - SR2 Conductivity Sensor - 1/2 inch Union + Orifice Plates | $3,624.00 | |
| LWI-1269945 | 1269945 | 3175 Controller - Boiler - SR2 Conductivity Sensor - 3/4 inch Union + Orifice Plates | $3,636.00 | |
| LWI-1269946 | 1269946 | 3175 Controller - Boiler - SR2 Conductivity Sensor - PLKT 1/2 inch Plumbing Kit | $4,200.00 | |
| LWI-1269947 | 1269947 | 3175 Controller - Boiler - SR2 Conductivity Sensor - PL5 1/2 inch Plumbing Kit for Cycle Sample | $3,500.00 |
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