Hach Met One 6000 Series, User Manual, Page: 30 / 70

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Installation
3.6.10.2 Flow alarm test
For units with a flow monitor, temporarily remove the central vacuum from the unit. The
measured voltage can be found from equation
(2) :
(2)
where: RL = value of the load resistor in ohms
Example: for a 100-ohm resistor, this voltage should be less than 0.20 volts.
Voltage < 0.002 RL
× ( )
=