LMI DC4000-11 Cooling Tower Conductivity Controller
$1,621.00
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Model: DC4000-11
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Function: Conductivity monitoring and control for cooling towers
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Control Outputs: Relay-controlled bleed and chemical feed
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Sensor Input: Compatible with LMI toroidal or contacting conductivity sensors
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Display: Bright digital readout for real-time conductivity measurements
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Set Points: Fully adjustable high/low conductivity thresholds
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Interface: Intuitive menu navigation with programmable parameters
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Power Supply: Standard 120/240 VAC input
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Enclosure: NEMA 4X rated for durable indoor/outdoor installation
The LIQUITRON™ DC4000 Series Conductivity Controller is a microprocessor based control system that will operate in a variety of water treatment applications. Designed specifically as a bleed and feed cooling tower controller or boiler controller.
The DC4000 provides a set point and relay for conductivity control, and a variety of timer functions to control chemical addition.
Programming this controller is simple and is accomplished using only three keys.
The backlit LCD display and LEDs provide visual indication of operating conditions and equipment status.
Specifications and Applications of the LMI DC4000-11 Controller
The LMI DC4000-11 conductivity controller combines conductivity measurement, relay-based equipment control, alarm functions, and programmable feed timers in a single water treatment controller. The DC4000 Series is designed for cooling tower, boiler, and closed-loop applications.
Use Cases & Industry Applications:
- Cooling Tower Water Treatment
The DC4000-11 cooling tower controller is designed for cooling tower applications requiring conductivity monitoring, bleed control, and chemical feed management.
- Cooling Tower Bleed Control
The cooling tower bleed controller provides conductivity set point control and relay outputs for controlling connected equipment as part of a bleed and feed treatment strategy.
- Boiler Water Treatment
The DC4000 Series is also designed for boiler applications and includes programmable boiler timer functions with interval, duration, and trap time settings.
- Closed-Loop Systems
The controller can be used in closed-loop water treatment systems where conductivity monitoring and controlled treatment functions are required.
- Conductivity Monitoring
The conductivity monitoring controller supports conductivity measurements from 0–20,000 µS or 0–6,000 PPM/TDS.
- Chemical Feed Management
The controller provides multiple programmable feed modes for controlling chemical addition according to treatment requirements.
Key Features & Benefits
- Microprocessor-Based Control: Provides an integrated platform for conductivity monitoring and water treatment control.
- Cooling Tower Application: Designed for cooling tower water treatment processes.
- Wide Conductivity Range: Supports 0–20,000 µS or 0–6,000 PPM/TDS.
- Two Relay Outputs: Provides control of connected treatment equipment.
- Multiple Feed Modes: Supports Feed Limit, Percentage of Time, Percentage of Bleed, and External Trigger.
- High and Low Alarms: Provides relay-based alarm functionality.
- 4–20 mA Output: Includes a standard conductivity recorder output.
- Flow Switch Compatibility: Supports flow switch connections and no-flow indication.
- Backlit LCD: Provides clear visibility of controller information.
- Temperature Display: Supports temperature display in °C or °F.
- Adjustable Differential: Allows hysteresis to be adjusted through the keypad.
- Selectable Set Point: Supports rising or falling set point operation.
- Three-Key Programming: Simplifies controller programming.
- Durable Housing: Uses flame-retardant molded TPE construction.
- Padlockable Cover: Uses a clear molded polycarbonate cover with padlock capability.
- Flexible Enclosure Configuration: Prewired units use NEMA 12X construction; hardwiring makes the unit suitable for NEMA 4X applications.
- Multiple Water Treatment Applications: Suitable for cooling tower controller, boilers, and closed-loop systems.
The DC4000 Series includes programmable feed timers, including Feed Limit, Percentage of Time, Percentage of Bleed, and External Trigger functions.
No replacement parts listed for this item yet.
FAQs
1. What is the LMI DC4000-11 conductivity controller used for?
The LMI DC4000-11 conductivity controller is used for conductivity monitoring and control in water treatment applications. The DC4000 Series is specifically designed for cooling towers, boilers, and closed-loop systems.
2. What is the conductivity range of the DC4000-11?
The controller supports a conductivity scale of 0–20,000 µS or 0–6,000 PPM/TDS.
3. Can the DC4000-11 control cooling tower bleed?
Yes. The controller provides a conductivity set point and relay control that can be used for cooling tower bleed applications. It also provides multiple timer functions for chemical addition.
4. How many relay outputs does the LMI conductivity controller have?
The DC4000 Series has two control relays. They are rated at 10 Amp at 115 VAC or 5 Amp at 230 VAC.
5. Does the DC4000-11 have a digital display?
Yes. The controller uses a 16-character backlit LCD and LED indicators for power, control, alarm, no-flow, and feed status.
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