
4 Transmitter
15
Application
System components
C For rapid assembly (without de-pressurizing
the installation), a measurement chamber (1)
is required. Connect a filter (4) upstream for
oily media.
• 4:
Filter
•
1: Measurement chamber
• testo
6781
with
G1/2 thread
D With dry air (max. 140 °C), a PTFE tube (3)
is used and the valve of the measurement
chamber (1) is opened to maximum (suitable
up to -60 °C
td
).
•
3: PTFE tube
•
1: Measurement chamber
• testo
6781
with
G1/2 thread
E For process temperatures of 50 °C to 200 °C
and a process pressure corresponding to the
presetting, it is necessary to use a cooling
coil (5) and a measurement chamber (1).
Connect a filter upstream for oily media.
•
Filter, if necessary
•
5: Cooling coil
•
1: Measurement chamber
• testo
6781
with
G1/2 thread
F If A to E are not required. The thread is
screwed directly into the process.
De-pressurized tube required during
installation.
• testo
6781
with
G1/2 thread
or
•
testo 6781 with N1/2"
thread
Pos: 28 /TD/Produktbeschreibung/Übersicht/MUF 63xx/Auf einen Blick MUF 6781 @ 3\mod_1238165303035_79.doc @ 30317 @ 3 @ 1
4.2.2.
At a glance
1
Display (optional)
2
Keys (only with optional display)
3
Test contacts
4
M 16 x 1.5 screw connection,
e.g. analog output
5
Service flap with connection for
service plug
6
Screw connection with process
connection (G 1/2 or NPT 1/2")
7
Sintered cap over sensor unit
Содержание 6781
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