BMT 964 - Electric Connections

OZONE ANALYZER BMT 964 Manual, Rev. 04/2021
50
In the BMT 964 AQ series of sensors, the isolated signal outputs are tied to Protective Ground
by 10 MΩ.
For further description of the functions and properties of the OZONE-IN-WATER SENSOR
BMT 964 AQ refer to the main part of the manual.
Electric connections
Note: The signal connector pinout of the standard instrument is different to the pinout of the
BMT 964 AQ!
Signal connector: 1 current signal, output 4 - 20 mA high
2 current signal, output 4 - 20 mA low
3 voltage signal, output 0 - 10 V high
4 voltage signal, output 0 - 10 V low
5 Auto Zero, input high (+24 VDC, 18mA)
6 Auto Zero, input low
7 Error Contact, output
} open on error
8 Error Contact, output
9 Purge Control, output for external pump / solenoid valve
10 Output contacts, Common for pins 9, 12, 13, 14, 15
11 Cable Shield
12 Lamp Low, output open on error
13 Low Limit Alarm, output opening or closing
(conn. soldering side) 14 High Limit Alarm, output opening or closing
15 Cuvette Dirty, output open on error
16 not connected
Mains connector: 1 mains
} (100 bis 240 VAC, 50/60 Hz, 15 VA)
2 mains
3 (free)
Protective Ground
Alternatively:
DC power connector: 1 positive
} (12-36 VDC)
2 negative
3 (free)
Protective Ground
RS-232 connector: 1 Cable Shield
2 TxD (from BMT 964 AQ)
3 RxD (to BMT 964 AQ) (screw terminal
4 Signal Ground side)
Remote Display: 12-pole connector, only to be connected to BMT Remote Display
Note: The 24V DC version of the BMT 964 AQ is based on the same type of power connector,
but with the female connector on the SENSOR side.
2
1
3
4