YOKOGAWA TB750G, Quick Start Manual, Page: 8 / 37

<2. PIPING AND WIRING>
2-1
IM 12E01A06-02E
2. PIPING AND WIRING
2.1 Piping
Piping methods depend on the application, select the appropriate system configuration, and install
pipes accordingly following examples.
2.1.1 System Using Open Head Tank and Zero Turbidity Filter
This is a typical system. A piping diagram is shown in Figure 2.1. Air bubbles in a water sample are
removed by an open head tank and the water sample is introduced into the detector at a stable flow
rate.
h
H
F2-1E.ai
Sample Water
Inlet
Drain Port
Sample Water
Outlet
TB750G
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
Valve
Drain
Drain
Drain
Drain
Sample Water
Sample Water
Effluent
Zero Water
Drain Valve
Other Turbidity Detectors
Zero Water
Head Tank
Flow Control Valve
Figure 2.1 Piping Diagram
• To prevent corrosion of water inside the zero turbidity filter, allow water to flow through the filter
and flow out from the zero water drain valve continuously at a flow rate of approximately 10 ml/
min.
• When using filtered water as zero reference, install a filter with the appropriate pore size
depending on the measuring range.
Measuring range of less than 2 NTU: 0.2 µm
Measuring range of 2 NTU or greater: 1 µm