YOKOGAWA PH450G

<2. Installation>
2-2
IM 12B07W01-04EN 1st Edition : Nov 11, 2016-00
(4) Ambient temperature is always maintained in the range of 0 to 45˚C
Check if there is any possibility that the cleaning chemical solution can freeze in winter or
if the pH/ORP Converter (or 2-Wire Analyzer) or the control box are subject to abnormal
temperature rises from direct sunlight. A location exposed to constant high humidity is not
desirable either.
(5) Free from vibration
The location must be free from such vibrations that might loosen piping connections.
(6) Free from corrosive gases
It is desirable that the location be free from any corrosive gas which may adversely affect
the components within the pH/ORP converter (or 2-Wire Analyzer) or the control box.
2.1.2 Installation Facilities
The PH8SM3 operating unit for the chemical cleaning system has a stand-alone construction
and can be securely attached with nuts to anchor bolts set in a concrete base.
l Construction of concrete base to install operating unit for chemical cleaning system
The PH8SM3 operating unit of the chemical cleaning system weighs approximately 60 kg when
the tank is lled with the chemical solution. Consequently, the facilities must be strong enough to
hold the weight of the entire unit. The facilities must also provide good drainage, Prepare anchor
bolts with M10 threads to secure the unit. Figure 2.2 shows how to set these anchor bolts in the
installation site.
25
540 600
440
500
F2.2.ai
M10 thread
Approx. 60
Concrete base
Position of anchor bolt
Unit: mm
Front view
Note: The holes (four) for the anchor bolts on the operating unit of the chemical cleaning system are 15 mm in diameter.
Dimensions of vat for operating unit of
chemical cleaning system
Figure 2.2 Setup of Anchor Bolts for Attaching Operating Unit of Chemical Cleaning System
2.1.3 Installing Chemical Cleaning Unit
After completing construction of the installation facilities, install the operating unit of the chemical
cleaning system. Tighten the nut securely (with nuts in all four locations.).