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Home  >  pH Meters and Water Quality Products > Process pH and Water Quality Control

Process pH and Water Quality Control

Process pH and Water Quality Control

Water treatment controllers include more than just a controller. Many other components are used to ensure that the measurement is correct, records are kept, and chemicals are added and mixed. Water treatment controllers are available with different mounting styles, number of inputs and outputs, control method, temperature compensation, and other features to suit your application. In addition we have a range of transmitters to use when control is not required. Control methods in water treatment controllers are varied. An on/off control is the simplest and most economical for equipment cost, but the least precise control method. A pump at a fixed flow rate is turned on when deviations from a set point occur and off when the set point is reached. Water treatment controllers that used proportional have an output proportional to the difference between the set point and measured value. This can take the form of a pulse whose frequency increases, as more chemical is required, or as a 4 to 20 mA signal where increased amperage corresponds to more chemical feed demand. For more information on water treatment controllers and systems contact a Cole-Parmer Technical Expert today.
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Representative photo only Eutech Instruments 1 4 DIN COND 500 Industrial Conductivity Transmitter with Display

Eutech Instruments 1/4-DIN COND 500 Industrial Conductivity Transmitter with Display

Display 2 line LCD
EW-19505-20
In stock.
$436.00 USD/EACH

Qty:
EW-56717-20 Eutech Instruments pH 500 2-Wire pH/ORP Transmitter with Display

Eutech Instruments pH 500 2-Wire pH/ORP Transmitter with Display

Product Type Transmitter,Accuracy pH -0.01 to 0.01,Resolution pH 0.01
EW-56717-20
In stock.
$377.00 USD/EACH

Qty:
EW-56700-00 Eutech Instruments pH 200 1/8-DIN pH/ORP controller

Eutech Instruments pH 200 1/8-DIN pH/ORP controller

Product Type Controller,Accuracy pH -0.01 to 0.01,Resolution pH 0.01
EW-56700-00
In stock.
$449.00 USD/EACH

Qty:
EW-56700-10 Eutech Instruments pH 190 1/8-DIN pH/ORP controller

Eutech Instruments pH 190 1/8-DIN pH/ORP controller

Product Type Controller,Accuracy pH -0.01 to 0.01,Resolution pH 0.01
EW-56700-10
In stock.
$396.00 USD/EACH

Qty:
EW-56717-32 Eutech Instruments<small><sup>&reg;</sup></small> pH 560 pH/orp Monitor With Two Relays

Eutech Instruments pH 560 pH/orp Monitor With Two Relays

Product Type Controller,Accuracy pH -0.01 to 0.01,Resolution pH 0.01
EW-56717-32
In stock.
$356.00 USD/EACH

Qty:
Representative photo only Eutech Instruments pH 1000 controller 115 VAC

Eutech Instruments pH 1000 controller, 115 VAC

Product Type Controller,Accuracy pH -0.01 to 0.01,Resolution pH 0.01
EW-56710-00
In stock.
$730.00 USD/EACH

Qty:
EW-35151-10 Eutech Instruments DO 500 dissolved oxygen transmitter, 1/4-DIN, 12 to 24 VDC

Eutech Instruments DO 500 dissolved oxygen transmitter, 1/4-DIN, 12 to 24 VDC

Display 2 line LCD,Brand Eutech Instruments
EW-35151-10
In stock.
$398.00 USD/EACH

Qty:
EW-56705-00 Eutech Instruments<small><sup>&reg;</sup></small> 1/4-din pH 800 On/off Controller, 115 Vac

Eutech Instruments 1/4-din pH 800 On/off Controller, 115 Vac

Product Type Controller,Accuracy pH -0.01 to 0.01,Control type On/Off
EW-56705-00
In stock.
$522.00 USD/EACH

Qty:
Representative photo only Eutech Instruments COND 190 Conductivity Controller

Eutech Instruments COND 190 Conductivity Controller

Control type On/Off,Display 4-digit, 14-segment LED
EW-19505-05
In stock.
$402.00 USD/EACH

Qty:
EW-56560-12 Single Channel Transmitter

GF+ Signet Single-Channel Transmitter, Panel Mount

Product Type Controller,Control type On/off (limit),Display 7- and 14-segmented LCD, backlit
EW-56560-12
Usually ships in 13 days or sooner.
$531.00 USD/EACH

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EW-05802-14 CONTROLLER, PH/ORP 1/8 DIN

Cole-Parmer 350 pH/ORP/Temperature 1/8-DIN Controller

Product Type Controller,Accuracy pH 2,Resolution pH 0.01
EW-05802-14
In stock.
$219.00 USD/EACH

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Representative photo only Eutech Instruments 1 8 DIN COND 200 On Off Controller

Eutech Instruments 1/8-DIN COND 200, On/Off Controller

Control type On/Off,Display 4-digit, 14-segment LED
EW-19505-00
In stock.
$449.00 USD/EACH

Qty:
EW-05802-06 CONTROLLER, COND/TDS 1/4 DIN

Cole-Parmer 500 Cond/TDS/Temperature 1/4-DIN Controller

Product Type Controller,Range mg/L (ppm) 0.000 to 150,000 ppt,Control type On/Off
EW-05802-06
In stock.
$529.00 USD/EACH

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EW-99243-30 Global Water Easy Sensor Display

Global Water Easy Sensor Display

Display LCD, values up to 1900 engineering units
EW-99243-30
Usually ships in 7 days.
$411.00 USD/EACH

Qty:
EW-56560-14 Single Channel Transmitter

GF+ Signet Single-Channel Transmitter, Field Mount

Product Type Controller,Accuracy pH +/- 0.5% of reading,Control type On/off (limit)
EW-56560-14
Usually ships in 13 days.
$531.00 USD/EACH

Qty:
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