YOKOGAWA WE440, User Manual

Page: 10 / 67

<1. General Information>
1-1
IM 12Y18A04-01EN 1st Edition : Oct. 04, 2019-00
1. General Information
The YOKOGAWA WE400 series analyzers are compact wet-chemistry analysis systems,
designed for the continuous on-line analysis of water in several applications across many
industries.
The WE440 Phosphate Analyzer uses the colorimetric detection method that relies on specific
reagents that are added to the sample to produce a reacted color compound.
The intensity of the color determines the concentration in reference to a known reacted standard.
The colored compound absorbs energy at a specific wavelength in accordance with the Beer-
Lambert Law.
The instrument uses Light Emitting Diodes (LEDs) that emit light at a narrow bandwidth selected
for the specific application.
The phosphate analysis method uses the blue LED.
n
Unpacking the Instrument
Remove the analyzer from its shipping carton and inspect it for damage.
Do not destroy the shipping container during unpacking so that you can save it for possible future
use.
NOTE
The analyzer may be shipped with a translucent protective cover on the LCD. Carefully peel off
this translucent layer and discard it.
WARNING
DO NOT APPLY ELECTRICAL POWER TO VISIBLY DAMAGED COMPONENTS, AS INJURY
OR FURTHER EQUIPMENT DAMAGE MAY OCCUR.
1.1 Startup Procedure
This section describes the necessary steps to begin using the WE440 Phosphate Analyzer. Refer
to Chapter 2 for instructions on mounting the analyzer, making the plumbing connections, and
connecting electrical power. More details can be found in subsequent chapters.
Once the analyzer is securely mounted in a fixed location, wired to electrical power, wired to
communications, (if necessary) and plumbed to process water, perform the following instrument
startup procedure:
1. Power on instrument.
2. To allow longer lifetime of unit, the pump-head tubing are not fully engaged when the unit is
shipped. Refer to Plumbing Connections section.
a. Reset tubes in pumps heads.
Note: This step must be repeated for all pump heads.
i. Remove tape.
ii. Slide tube retainer into place along keyway.
iii. Install tubing cover by squeezing both sides, and sliding into grooves.
3. Install reagents. Very carefully match reagent numbers and colors in their proper order.
Refer to “2.2.2 Installing the Reagents” section.