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Hach 8520600 User Instructions page 7

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Figure 3 Product components
1 Pressurized relay module with auxiliary cable
User-supplied equipment
Refer to
Figure 2
on page 6 for an overview of the plumbing, mechanical and electrical parts that
must be supplied by the user. Make sure that the equipment agrees with local, regional and national
requirements.
• Junction box and cables—Connects to mains power, the ball valve and the relay module.
• Pressure reducer/regulator—Decreases the sample line pressure to less than 69 kPa (10 psi). Use
a pressure regulator that has the applicable requirements for the size of the input sample line, the
input pressure and the sample type. The manufacturer recommends Watts Series SS-263AP M1,
21 to 345 kPa (3 to 50 psi).
• Pressure relief valve—Makes sure that the pressure in the sample line is not too high. Use a tool-
adjustable pressure relief valve with sufficient discharge capacity so that the sample pressure
cannot be more than 103 kPA (15 psi).
• Motorized three-way ball valve—Connects the flow from the pressurized sample line to the
sampler inlet and then to the drain for automated sample collection. Refer to
valve requirements.
Specification
Valve type
Materials of construction
Actuator
Actuator maximum current
Actuation time
Duty cycle
Port size
Certification
Installation
This instrument is rated for an altitude of 2000 m (6562 ft) maximum. Although the use of this
equipment above the 2000 m altitude does not show any substantial safety concern, the
manufacturer recommends that users with concerns contact technical support.
2 Mounting screws, 6 x 0.75 inch tapping (4x)
Table 1 Ball valve requirements
Details
Three-way diverter ball valve
Compatible with process fluid
Electric
1/8 HP at 120 VAC; 1/4 HP at 240 VAC, 5 A maximum resistive
15 seconds maximum
25% minimum
9 mm minimum
NRTL or CE
Table 1
for the ball
English 7

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