Tecfluid MT-02 - Manual (Page 3)

Cod.:E-MI-2151001I Rev.: 2
3
1.4 Pulse Input Connection
The connection to the input from the pulse generator (flowmeter) must be made using shielded
cable with two live wires and the external shield. The external shield must be connected to the chassis of
the pulse generator and to terminal Nº1 on the input connector of the MT-02 which is marked "INPUT"
"TM44", "COVOL" or "TTL" depending on the type of input pulse.
The input cables must not be installed close to power lines as these will induce interferences in
the input lines causing errors in the readings.
A. COVOL
MT-02 Terminal Nº to COVOL connector terminal Nº
1 Shield 1 Shield
2 Live 2 Live
3 No connection
B. TM-44
MT-02 Terminal Nº to TM44 connector l Nº
1 Shield 1 Shield
2 Live 2 Live
3 Live 3 Live
C. TTL
MT-02 Terminal Nº to Signal generator
1 Shield 1 Common
2 Live 2 Live (+)
3 No connection
The selection of the different types of inputs is made by changing the position of jumpers in the
interior of the equipment. The MT-02 is supplied according to the clients specifications. The type of input
can be changed, but this should be done by an authorized technical service.
1.5 Remote ON/OFF Connection
The input for the remote ON/OFF is intended for a normally open electrical contact connected
between terminals Nº1 and Nº2 of the connector situated at the left of the connector marked "INPUT".
The connection to the input from the remote Reset must be made using shielded cable with two
live wires and the external shield. The external shield must be connected to earth at both ends . The two
live wires are connected to the terminals of the remote Reset connector.
The input cables must not be installed close to power lines as these may induce interferences in
the input lines causing errors in the equipment.