• Universal sensor input
• For use with contacting or electrodeless conductivity sensors
• Three control outputs
• Complete flexibility in the function of each relay
• Large display with icon based programming
• Economical wall-mount package
• Multiple language support

• Universal sensor input
• Three control relays
• Complete flexibility in the function of each relay
• Optional analog (4-20 mA) output
• Large display
• Multiple language support
• Timer functionality included

• Universal sensor input
• Three control relays
• Complete flexibility in the function of each relay
• Optional analog (4-20 mA) output
• Large display
• Multiple language support
• Timer functionality included

• Compact 1/4 DIN panel mount enclosure
• Universal sensor input: conductivity (contacting and electrodeless), amplified pH/ORP, or disinfection
• Four control outputs
• Complete flexibility in the function of each relay
• Large display with icon based programming
• Multiple language support

• Universal sensor input
• Optional dual analog (4-20 mA) input
• Six control outputs
• Complete flexibility in the function of each relay
• Large touchscreen display with icon based programming
• Economical wall-mount package
• Multiple language support
• On-screen graphing
• Datalogging
• Ethernet option for remote access

• Universal sensor input
• Available with boiler or condensate sensors
• Optional dual analog (4-20 mA) input
• Six control outputs
• Complete flexibility in the function of each relay
• Large touchscreen display with icon based programming
• Economical wall-mount package
• Multiple language support
• On-screen graphing
• Datalogging
• Ethernet option for remote access

• Universal sensor input
• Available with contacting or electrodeless sensors
• Optional dual analog (4-20 mA) input
• Six control outputs
• Complete flexibility in the function of each relay
• Large touchscreen display with icon based programming
• Economical wall-mount package
• Multiple language support
• On-screen graphing
• Datalogging
• Ethernet option for remote access

• Boiler Controller: Single or Dual
• Control: 2 powered relays or 6 powered relays
• Output: 4-20mA

Single or Dual System Boiler Controller. With up to two conductivity electrodes, two analog outputs and six on/off relays.

• Cooling Tower Controller: Single or Dual
• On/off relays: Bleed, Feed, Bio1, Bio2, Alarm
• Output: 4-20mA

The Walchem single and dual input cooling tower controllers provide relays for bleed, feed, 2 biocide pumps and alarm, and possess the following features:

• Conductivity measurement: 0 - 10,000µS/cm
• Optional pH and ORP measurement(WDT410)
• On/off relays: Bleed, Feed, Bio1, Bio2, Alarm
• Flow switch manifold (optional)
• USB data-logging
• NEMA 4X enclosure
• Water meter inputs with flow totalizing
• Optional 4-20 mA output(s)
• Conductivity-based biocide prebleeds
• Lockout timer after biocide additions
• Four Chemical Feed options:
  • Feed & bleed simultaneously
  • Feed after bleed has finished
  • Feed as a percentage of time elapsed
  • Feed as a percentage of make-up water

• Industrial Controller: WebMaster
• Inputs: Upto 12 digital or 8 analog
• Outputs: Upto 4 analog
• Relays: 8 on/off

Industrial Water Treatment, Web-enabled for simple setup and monitoring.

• Multi Input/Output Controller: WebMaster
• Inputs: Upto 12 digital or 8 analog
• Outputs: Upto 4 analog, 8 on/off relays

WebMasterONE Multi Input/Output Controller, with up to 8 relays, 4 analog outputs, 12 digital inputs, 8 analog inputs, and 4 sensor inputs (such as pH, ORP, conductivity etc.). Web-enabled for simple setup and monitoring.

• Condensate Controller: Single or Dual
• Control: Up to 5 on/off relays
• Output: 4-20mA

With up to two conductivity electrodes, two analog outputs and five on/off relays.

• Electrodeless Conductivity: Single or Dual
• Inputs: up to 2 sensors, 2 analog outputs
• Outputs: 2 analog, 4 on/off relays

• Electrodeless Cooling Tower Controller: Single or Dual
• Control: On/off relays: Bleed, Feed, Bio1, Bio2, Alarm
• Output: 4-20mA

Single or Dual System Electrodeless Cooling Tower Controller. With optional biocide addition, optional conductivity sensor, optional pH or ORP electrode, two analog outputs and six on/off relays.

• Boiler Controller: WebMaster
• Inputs: Upto 12 digital or 8 analog
• Outputs: Upto 4 analog
• Relays: 8 on/off

WebMasterONE Multi Input/Output Controller, with up to 8 relays, 4 analog outputs, 12 digital inputs, 8 analog inputs, and 4 conductivity electrodes. Web-enabled for simple setup and monitoring.

• Dual Cooling Tower Controller: WebMaster
• Inputs: Upto 12 digital or 8 analog
• Outputs: Upto 4 analog
• Relays: 8 on/off

WebMasterONE Multi Input/Output Controller, with up to 8 relays, 4 analog outputs, 12 digital inputs, 8 analog inputs, and 4 sensors (conductivity, pH, ORP). Web-enabled for simple setup and monitoring.

• Cooling Tower Controller: WebMaster
• Inputs: Upto 12 digital or 8 analog
• Outputs: Upto 4 analog
• Relays: 8 on/off

WebMasterONE Multi Input/Output Controller, with up to 8 relays, 4 analog outputs, 12 digital inputs, 8 analog inputs, 2 conductivity sensors, a pH or ORP sensor, and a flow switch manifold. Web-enabled for simple setup and monitoring.

Walchem Contacting Conductivity Electrodes, either passive or active, made of 316SS/PEEK, PP/graphite or PP/stainless steel, with or without ATC.

Walchem Econd Electrodeless Conductivity Sensors for WEC, WDEC, WECT, WEDT, WIND & WM1 controllers. Made of CPVC, PEEK. With or without tee/nut/O-ring and with 5' or 20' cable. Ranges from 1 mS/cm to 1000 mS/cm.

Specifications

• Type: EC/TDS/Salt/Temperature
• Test Factor: Salt
  • Range: 0 - 9,999 ppm
• Test Factor: TDS
  • Range: 0 - 9,999 ppm
• Test Factor: Temperature
  • Range: 32.0° - 149°F
• Weight: 0.5 lbs
• UPC Code: 63739544548

Specifications

• Type: pH/Conductivity/Temperature/TDS/Salt
• Test Factor: Salt
  • Range: 0 - 9,999 ppm
• Test Factor: pH
  • Range: 0.00 - 14.0
• Test Factor: TDS
  • Range: 0 - 9999 ppm
• Test Factor: Temperature
  • Range: 32.0° - 149°F
• Weight: 0.5 lbs
• UPC Code: 63739544758

Specifications

• Type: CON 6 Plus Handheld, with Temperature Probe, no case
• Test Factor: Conductivity
  • Range: 0 - 200 mS
• Test Factor: Temperature
  • Range: -10 to 110°C
• Weight: 2 lbs
• UPC Code: 63739546161
• Alternate Number: 5003802

Specifications

• Type: CON 6 Plus Handheld, with Temperature Probe, with case and standards
• Test Factor: Conductivity
  • Range: 0 - 200 mS
• Test Factor: Temperature
  • Range: -10 to 110°C
• Weight: 2 lbs
• UPC Code: 63739546354
• Alternate Number: 5003902

Specifications

• Type: Waterproof, Dual Range, 0-2 mS and 0-20 mS
• Test Factor: Conductivity, Low Range
  • Range: 0 - 2 mS
  • Resolution / Sensitivity: 10 μS
• Test Factor: Conductivity, High Range
  • Range: 0 - 20 mS
  • Resolution / Sensitivity: 0.10 mS
• Weight: 0.5 lbs
• UPC Code: 63739543828
• Alternate Number: 50082

Specifications

• Type: Model 140
• Includes: Optional sensor and plumbing configurations
• Output Relays: 2 selectable use and 1 blowdown relay
• Flow Switch: Flow switch input
• Water Meter: 1 water meter (contact head, paddle wheel or turbine) input
• Output Signal: 1 isolated or non-isolated optionally powered 4-20 mA output
• Mounting plate: Optional mounting plate
• Conductivity Range: 0 - 10,000 μS
• Temperature Compensation: 500 ohm NTC
• Ambient Temperature: 32° - 120° F (0° - 49° C)
• Sensor Type: 2 electrode conductivity sensor
• Conductivity Resolution: ± 10 μS
• Accuracy & Repeatability: ± 1.0%
• Deadband/Setpoint: Adjustable
• Enclosure: NEMA 4X, ETL
• Timer: Max. blowdown time exceeded, relay time exceeded
• Power: 120/240 VAC 50/60 Hz
• Relay Ratings: 3A each, 10A total
• Usage: Water treatment conductivity control

Specifications

• Type: Model 1520/30e
• Includes: Optional sensor and plumbing configurations
• Output Relays: 4 selectable use relays
• Flow Switch: Flow switch input
• Water Meter: 2 water meter (contact head, paddle wheel or turbine) inputs
• Analog Input: pH or ORP or 4-20 mA input
• Output Signal: 1 isolated or non-isolated optionally powered 4-20 mA output
• Mounting plate: Optional mounting plate
• Drum Switch: 2 digital contact drum switch inputs
• Ambient Temperature: 32° - 120° F (0° - 49° C)
• Sensor Type: Solution ground, signal differential, or single-ended
• pH Range: 2-12 pH
• pH Resolution: ± 0.10 pH
• ORP Range: -1000 to +1000 mV
• ORP Resolution: ± 1 mV
• Accuracy & Repeatability: ± 1.0%
• Deadband/Setpoint: Adjustable
• Enclosure: NEMA 4X, ETL
• Timer: Relay run time exceeded
• Power: 120/240 VAC 50/60 Hz
• Relay Ratings: 3A each, 10A total
• Usage: Water treatment pH or ORP control

Specifications

• Type: Model 1575e
• Includes: Optional sensor and plumbing configurations
• Output Relays: 3 selectable use and 1 blowdown relay
• Flow Switch: Flow switch input
• Water Meter: 2 water meter (contact head, paddle wheel or turbine) inputs
• Analog Input: 1 non-isolated internally powered 4-20 mA input
• Output Signal: 1 isolated or non-isolated optionally powered 4-20 mA output for conductivity
• Mounting plate: Optional mounting plate
• Drum Switch: 2 digital contact drum switch inputs
• Temperature Compensation: 500 NTC, None
• Ambient Temperature: 32° - 120° F (0° - 49° C)
• Sensor Type: 2 electrode conductivity sensor
• Conductivity Resolution: ± 10 μS (conductivity <5000 μS), ±100 μS (conductivity >5000 μS)
• Accuracy & Repeatability: ± 1.0%
• Deadband/Setpoint: Programmable
• Enclosure: NEMA 4X, ETL
• Timer: Max. blowdown time exceeded, relay time exceeded
• Power: 120/240 VAC 50/60 Hz
• Relay Ratings: 3A each, 10A total
• Usage: Water treatment conductivity, pH or ORP control

Specifications

• Type: NexSys Single Control System
• Conductivity Sensor: Optional conductivity sensor
• pH Sensor: Optional pH sensor
• ORP Sensor: Optional ORP sensor
• Make-up Conductivity: Optional make-up conductivity sensor
• Output Relays: Optional relays
• Flow Switch: Optional flow switch
• Water Meter: Optional water meter
• Analog Input: Optional 4-20 mA input
• Output Signal: Optional 4-20 mA output signal
• Remote Display: No remote display
• Mounting plate: Optional mounting plate
• Conductivity Range: 0 - 5,000 μS
• Maximum Pressure: 140 psi (9.65 bar) @ 100 °F
• Process Temperature: Max 140°F (60°C)
• Ambient Temperature: -4° to 158°F (-20° to 70°C)
• Conductivity Resolution: 10 μS
• Conductivity Accuracy: ± 40 μS
• pH Range: 2-12 pH
• pH Accuracy: ± 0.05 pH
• pH Resolution: 0.01 pH
• ORP Range: -1000 to +1000 mV
• ORP Accuracy: ± 5.0 mV
• ORP Resolution: 1 mV
• Accuracy & Repeatability: ± 1.0% of scale
• Deadband/Setpoint: User programmable
• Enclosure: NEMA 4X, ETL
• Timer: Relay run time exceeded
• Power: 120/240 VAC 50/60 Hz
• Relay Ratings: 120VAC 3A each, 15A total

Specifications

• Type: NexSys Dual Control System
• Conductivity Sensor: Optional conductivity sensor
• pH Sensor: Optional pH sensor
• ORP Sensor: Optional ORP sensor
• Make-up Conductivity: Optional make-up conductivity sensor
• Output Relays: Optional relays
• Flow Switch: Optional flow switch
• Water Meter: Optional water meter
• Analog Input: Optional 4-20 mA input
• Output Signal: Optional 4-20 mA output signal
• Remote Display: No remote display
• Mounting plate: Optional mounting plate
• Conductivity Range: 0 - 5,000 μS
• Maximum Pressure: 140 psi (9.65 bar) @ 100 °F
• Process Temperature: Max 140°F (60°C)
• Ambient Temperature: -4° to 158°F (-20° to 70°C)
• Conductivity Resolution: 10 μS
• Conductivity Accuracy: ± 40 μS
• pH Range: 2-12 pH
• pH Accuracy: ± 0.05 pH
• pH Resolution: 0.01 pH
• ORP Range: -1000 to +1000 mV
• ORP Accuracy: ± 5.0 mV
• ORP Resolution: 1 mV
• Accuracy & Repeatability: ± 1.0% of scale
• Deadband/Setpoint: User programmable
• Enclosure: NEMA 4X, ETL
• Timer: Relay run time exceeded
• Power: 120/240 VAC 50/60 Hz
• Relay Ratings: 120VAC 3A each, 15A total

Specifications

• Type: 540 Series
• Cell Constant: 0.1 or 0.01 cell constant
• Cable or Enclosure: 240" cable
• Fitting: Optional Swagelok or ball valve
• Body: 10" or 18" 316 SS body
• Conductivity Range: 1 - 10 μS or 10 - 100 μS
• Material: with TFE cable insulation and PVDF insulator material
• Process Temperature: 0-392°F (200°C)
• Temperature Compensation: 500 NTC

Specifications

• Type: 543 Series
• Cable or Enclosure: Choose 20' cable or NEMA enclosure option
• Fitting: Optional Swagelok or ball valve
• Body: CPVC or 316 SS, 10" or 18" or 48"
• Conductivity Range: 10 - 500 μS, 100 - 1,000 μS or 500 - 100,000 μS depending on model
• Maximum Pressure: 100 or 150 psi depending on model
• Process Temperature: Max 150°F or 260°F depending on model
• Temperature Compensation: 4K NTC or 1K PTC depending on model

Specifications

• Series: DC4500 Series
• Type: with dual biocide
• Control: Adjustable lockout timer, prebleed, 4 inhibitor feeds, 4-20 mA output, 0-20,000 µS/cm control range
• Probe: Optional carbon probe and manifold
• Electrical: Standard 115 VAC, but available with international voltage types and plugs

The Liquitron DC4500 Series Conductivity Controller is a microprocessor-based control system that will operate in a variety of water treatment applications. The DC4500 provides a set point and relay for conductivity control, and a variety of timer functions to control chemical addition, including dual biocides. Pumps may be controlled in either ON/OFF or external trigger mode.

Programming this controller is simple using only three keys. The backlit LCD display and LEDs provide a visual indication of operating conditions and equipment status.

To see the complete range of LMI Liquitron Controllers, visit our LMI Controllers page.

You may also be interested in a comparable product from Walchem, the WCN600 Series of conductivity controllers.