4 Transmitter
20
4.3.1.3.
With stainless steel measurement chamber and cooling coil
(max. 35,000 hPa)
1.
Screw process connection (G1/2) of the testo 6781 transmitter
into the thread of the measurement chamber.
2. Mount 6781 as described under Without stainless steel
measurement chamber and cooling coil page 19.
3.
Engage quick-release fastening of the measurement chamber
in quick-release fastening of the cooling coil.
4.
Engage second quick-release fastening of the cooling coil in the
standardized socket of the compressed air line.
Pos: 37 /TD/Erste Schritte/MUF 63xx/Spannungsversorgung/Analogausgänge anschließen 6781 @ 3\mod_1239951683334_79.doc @ 31673 @ 45 @ 1
4.3.1.4.
Connecting voltage supply and analog outputs
Wiring diagram for 4-wire system (0 … 20 mA / 4 to 20 mA /
0 to 1 V/0 to 5 V/0 to 10 V)
1-channel
0...20 mA / 4...20 mA
max. load per 500
Ω
0...1V / 0...5 V / 0...10 V
Requirement for the connecting cable of the supply:
•
shielded and insulated with cross-section in the range of
0.12-0,5 mm² (depending on cable length).
•
the supply lines must be protected against surge current
by appropriate means.
•
an OFF switch must be installed in an easily accessible
position close by and be marked as such.
