YOKOGAWA TB820D, User Manual, Page: 24 / 87

<2. INSTALLATION, PIPING, AND WIRING>
2-13
IM 12B01B30-02EN 2nd Edition : June 09 , 2021-00
[Installation and Piping of the Simple Head Tank]
1. To the sample inlet of the detector, attach a 3-way (tee) or appropriate fitting corresponding
to the inlet’s connection size (Rc1/2 or 1/2 NPT). This allows switching of the sample flow
and the zero water flow.
2. Install the simple head tank with the four M5 bolts (supplied by customer) so that the head
tank is positioned higher than the detector.
3. To the sample inlet (Rc3/8) of the simple head tank, connect a fitting corresponding to
the connection size and a hose/tube with sufficient diameter that provides adequate flow
of sample. If pressure exists in a sample, use an appropriate tube that can withstand the
pressure, e.g., a rigid PVC tube.
If the flow rate of a sample exceeds 10 L/min, install a bypass line before the simple head
tank to control the flow rate.
4. Connect a fitting corresponding to the connection size and a hose/tube with sufficient
diameter that provides adequate flow of sample between the sample outlet (Rc1/2) of the
simple head tank and the sample inlet of the detector.
5. Connect hoses with an inside diameter of 19 mm to the drain and the vent at the top of the
head tank to drain the sample to a drain pipe.
6. To the drain at the bottom of the simple head tank, connect a rigid PVC tube corresponding
to nominal size 20A (26.2 mm ID) to drain the sample to a drain pipe.
7. To the sample outlet of the detector, connect the drain for controlling the flow rate.