YOKOGAWA TB820D, User Manual, Page: 23 / 87

<2. INSTALLATION, PIPING, AND WIRING>
2-12
IM 12B01B30-02EN 2nd Edition : June 09 , 2021-00
2.2.2 A system using a Simple head tank (/D2)
An optional simple head tank with a vent to the atmosphere (option code “/D2”), shown in Figure
2.22, is available from Yokogawa. The piping diagram of the simple head tank is shown in Figure
2.23. The installation of and the piping for the simple head tank are described below.
4-ø6
26
±5
795
390 (for fixing hole)
64.5
±5
150
±5
205
38 (for fixing hole)
38 (for fixing hole)
±5
210.5
±5
271
±5
66
±5
102
±5
67
±5 123
±5 95.5
Drain
TS socket type
Nominal 20A(ø26.2 ID)
Sample water outlet
(to detector)
Rp1/2
Sample water inlet
Rc3/8
Drain
Tube size ø19 ID
Hose coupling
Vent to the atmosphere
Tube size ø19 ID
Hose coupling
Unit: mm
F3-30E.ai
Figure 2.22 Simple Head Tank (/D2)
Drain
Drain
Valve
Sample Water
Inlet
Drain Port
Sample Water
Outlet
Detector
Drain Valve
Sample Water
Tap Water
Sample Water
Valve
Zero Turbidity
Filter
Sample Water
Supply Valve
Zero Water Supply Valve
Tap Water
Valve
Drain
Drain
Drain
Sample Water
Simple Head Tank
Zero Water
Vent
Flow Control Valve
Sample Water
Effluent
Zero Water
Drain Valve
Other Turbidity Detectors
h
F3-31E.ai
Figure 2.23 Piping Diagram (/D2)