pH/ORP Control
Walchem’s pH/ORP on-line process controllers will improve your treatment performance. With a choice of
two models, WDP (Dual pH/ORP) or WPH (pH/ORP), finding the optimum control for your application is a snap. Both the WDP and WPH are
microprocessor-based with an easy-to-use menu format for programming. A versatile output configuration allows you to program up to four outputs
in a variety of ways with just one controller. The WDP and WPH are available with either on/off mechanical relay outputs or direct pulse propor-
tional control for metering pumps. The WPH and WDP Series is also available in a panel mountable configuration. This 1/2 DIN package fits
many industrial control panels. Installation is as easy as unpacking the unit, mounting it and plugging it in. UL/CSA/CE certified.
pH OR ORP MEASUREMENT
PROBE WASH FEATURE
CALIBRATION REMINDER
AUTO BUFFER RECOGNITION
NEMA
4X SYSTEM
OPTIONAL
4-20MA OUTPUT(S)
ELECTRODE EVALUATION AFTER EACH
CALIBRATION
WEL Series
Walchem’s WEL Series electrodes are cost-effective differential pH and ORP electrodes for
industrial applications. They are modular in design with a rugged CPVC housing which contains
the electronics; pH and ORP cartridges can easily be connected or replaced in minutes without
tools.
The cartridges feature a unique threaded interlock connection and a double o-ring seal, ensuring a watertight fit and secure seating at all times.
The optional differential preamplifier and temperature compensation element are in the housing, and are not thrown away when the electrode
needs replacement. The electrode is powered by the controller it is connected to, so the signal is always preamplified and there are no batteries to
go dead. A titanium solution ground rod integral to the housing enables the differential measuring technique. This results in prolonged electrode life
and reliable measurement, resistance to stray voltages and currents or ground loop problems.
The electrode design enables a universal mounting style - a single housing and cartridge can be mounted in-line or submersed. This reduces
inventory of parts and spares needed.
UL/CSA/CE certified.
WPH/WDP Series
WDP and WPH Series Controllers are a perfect match with
Walchem’s WEL pH/ORP sensors - offering an extremely
reliable differential measurement technique immune to any
possible ground loop problems. Together, they provide a true
NEMA 4X system with no BNC connectors exposed
to wet or corrosive conditions. Walchem’s pH/ORP
controllers and sensors are engineered to give you
the most reliable measurement and control available.
Differential pH
IN-LINE OR SUBMERSION MOUNTING
RESISTANT TO ELECTRONIC NOISE AND GROUND LOOPS
HASSLE FREE INSTALLATION AND ELECTRODE REPLACEMENT
DIFFERENTIAL TECHNOLOGY PROVIDES LONGER LIFE
WPH pH/ORP
Panel Mount Controller
pH/ORP Electrodes
OPTIONAL ATC
ELECTRONICS ARE NOT DISCARDED WITH THE ELECTRODE
CARTRIDGE STYLES
:
FLAT SURFACE
BULB
/ROD
HF RESISTANT
(52 paginas)
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