Crison MultiMeter 44 Manual Del Usuario página 64

Advanced operations
Figure 31 RS 485 channel, example of installation
1
pH/mV Electrode Relays
Signal
Ground Cell Relays
E.C.
(Conductivity)
DO Sensor (M) Relays
D.O.
(Membrane)
RS 232 Relays Mains
MultiMeter MM 44 Alarm Cleaning
N L
1 2 3 4 5 6 7 8 9 10
Número de serie:
Crison Instruments, S.A.
08328 Alella - Barcelona
Made in EU
Instrument 1
1
Instrument 2
2
Instrument 3
3
PC
4
62
Relays: Limit the current up to 3A by using one fuse. Do not connect cables with voltage higher
than 24 V.
2
pH/mV Electrode
Signal
Ground Cell
E.C.
(Conductivity)
DO Sensor (M)
D.O.
(Membrane)
Fuse RS 232
110/230V: T100L 250V MultiMeter MM 44
24V: T500L 250V
1 2 3
Número de serie:
Crison Instruments, S.A.
08328 Alella - Barcelona
Made in EU
5
RS 23
1 2
9 10 11
12
Cable 1 (RS485 cable, not
5
supplied)
Cable 2 (RS485 cable, not
6
supplied)
Cable 3 (Connection cable,
7
supplied with module 44 98)
Convertor module code 44 98
8
Note: In the last instrument of the chain, Instrument 1 in the example, the connections appearing on
the detail (390 Ohms resistors) scheme must be carried out.
To receive data from the PC, it is necessary the connection of one convertor USB to
RS 485. The convertor USB incorporates one telephonic connector, for this reason, the
cable for connection to the PC (cable 3 in the example) is different from the rest. It should
have telephonic connector.
D A N G E R
Relays pH/mV Electrode
Signal
Relays Ground Cell
Relays DO Sensor (M)
Relays Mains Fuse
Alarm Cleaning 110/230V: T100L 250V MultiMeter MM 44
N L
24V: T500L 250V
4 5 6 7 8 9 10
Número de serie:
Crison Instruments, S.A.
08328 Alella - Barcelona
Made in EU
6
RS 232
1 2 3
3
Relays
Relays
E.C.
(Conductivity)
Relays
D.O.
(Membrane)
RS 232 Relays Mains Fuse
Alarm Cleaning 110/230V: T100L 250V
N L
24V: T500L 250V
1 2 3 4 5 6 7 8 9 10
8
7
Relays Mains
Alarm Cleaning
N L
4 5 6 7 8 9 10
Brown cables: To terminal 11
9
10 White cables: To terminal 12
11 Shield: To terminal 13
12 390 Ohms resistors: connection
between Terminals 11-15 and
Terminals 12-14 (only the last
instrument on the chain
4
Fuse
110/230V: T100L 250V
24V: T500L 250V