Proteus 800 Series - Page 6

6
• LED provides instant status information.
Like a traffic signal, the green, amber and red lights indicate flow status so that problems are easily
detected. Green, amber and red lights provide instant indication of the status the flow switch and the
flow rate. An additional LED monitor can be remotely mounted at your control panel.
❖ If the three-color LED is ON you know that 24VDC power is being delivered to the flow
switch and the flow switch is functional.
❖ The color of the LED changes depending on the ratio of the actual flow rate to the Trip Point
LED
Color
Flow Rate Status
Example Trip Point 10 GPM
Relay State
NO contact
NC contact
Green
Greater than 1.15 x flow
rate at selected trip point
Actual Flow > 11.5 GPM
Closed
Open
Amber
Between 1x and 1.15 x flow
rate at selected trip point
10 < Actual Flow < 11.5 GPM
Closed
Open
Red
Less than flow rate at
selected trip point
Actual Flow < 10 GPM
Open
Closed
• Multiple outputs provide control flexibility
Electrical interfacing of the 800 Series units is effected through an 8-pin connector that provides a
range of control options while delivering 24VDC power. See Section 6, Installation for connection
details.
Connector Position
800
Function
Notes
1
Power input
24 VDC ± 10%
2
Ground connection for power
& output signals
Should be connected to a valid system ground
3
Output Voltage
Calibrated to provide 5 VDC at the maximum flow rate
4
Normally Closed relay
contact
Connects to NC contact of relay.
5
Common relay contact
Connects to Common contact of relay
6
Normally Open relay contact
Connects to NO contact of relay
7
Red LED anode
Connections for a remote tri-color LED indicator.
Common cathode of tri-color LED should be connected
to ground
8
Green LED anode