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1. Push the signal cable through the cable gland up to the terminal strip. Lay the cable in a loop
before the cable glands so that moisture does not get inside the terminal box.
2. Connect the cables according to the figure above.
3. Fit end ferrules to fine-wire cables.
4. Tighten the cable gland and check strain relief.
5. Screw the lid to the housing and tighten it. You must not use any tools. The sealing ring must
be clean and undamaged.
6. Mount the lid catch.
7. For transmitters in remote design, also connect the housing to the local potential
equalization to which the appropriate sensor must also be connected.
HART requirements
• The full HART 5.1 specification only applies when using shielded cables.
• Use signal cables with twisted wire pairs if the analog output and pulse/frequency output are
used simultaneously and signals are transmitted in one cable.
• A load of at least 250 Ω must exist in the signal circuit (see also Technical specifications
(Page 85)) for error free communication via the HART protocol.
5.5
Step 3: Connecting terminal box and transmitter
High voltage
The SITRANS FM TRANSMAG 2 transmitter may only be connected to SITRANS FM MAG 911/E
measuring sensor for alternating fields.
The magnetic circuit carries dangerous mains voltage. As long as the device is under voltage,
the lid of the housing on the sensor connection area may only be opened by qualified
personnel. Before removing the terminal cover, the auxiliary power must be switched off from
all poles. Following installation, the terminal cover must be screwed back on again.
TRANSMAG 2 with MAG 911/E
Operating Instructions, 03/2021, A5E00102775-AC
WARNING
5.5 Step 3: Connecting terminal box and transmitter
Connecting
37
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