Manual OPTISENS AAC 050
11
OPTISENS AAC 050
2.2
Connection diagram wall-mounting enclosure
Connection
Terminals
Notes
1 = screen
2 = measuring electrode
3 = reference electrode
1 - 4
4 = counter electrode
Metal electrode &
membrane sensors
without electronics
With 2-electrode sensors bridge 3 + 4
1 + 2 = Measurement
3 = - 6V
Membrane sensors
with electronics
1 - 4
4 = + 6V
Pt100 / NTC
6 - 7
Display contrast
Display
Potentiometer to adjust the display contrast
Analog output
11 + 12
11 = +, 12 = - ; max. burden 500 Ohm
Relay 1
14 + 15
Relay 2
16 + 17
Relay 3
18 + 19
Alarm relay
Power supply
20+21+22
check information given on nameplate
RS 485 (option)
23 + 24
23 = -, 24 = +,- Jumper A bridged = terminating impedance
activated
Digital input
26 - 27
26 = +, 27 = -, external controller stop or lack of water sensor or
flow meter
Flow measurement:
26 = white, 27 = brown
