Mutec FS750E, Operating Manual, Page: 10 / 14

Operating Manual
MSBA00049
Date: 21.03.2019
Rev.: 05
Page 10 of 14
Operating Manual FS750E
Mütec Instruments GmbH
Tel.: +49 (0) 4185-80 83-0 E-Mail: muetec@muetec.de
Bei den Kämpen 26
Fax: +49 (0) 4185-80 83-80 Web: www.muetec.de
D-21220 Seevetal-Ramelsloh
7 Electrical Connection
7.1 Connecting the Sensor
The dust monitor and the DIN-rail transmitter are electrically connected via the 4-wire
connection cable. The sensor is supplied with a pre-assembled cable
(length 3,0 m,
Ø 4.4 mm, 4 x 0.14 mm², insulation: PVC or special halogen-free compound) . The 4
wires of the connection cable are depicted in figure 5 a). Connect the shield with the
ground rail (DIN rail)
7.2 Connecting the Transmitter
The terminal assignment of the transmitter is shown in figure 5 b). It has to be supplied
with 24V DC. For the analog 4-20mA output, use terminal pin T2 and the shared ground
on pin T4. Shielded connection cables should be used. Connect the shield with the
ground rail (DIN rail). As an alternative, unshielded connection cables can be used, if
the cable length does not exceed 3m and the transmitter is mounted within a control
cabinet.
a) 4-wire connection cable of the
cable screen
b) Power supply and analog output
Figure 5: Terminal assignment
8 Commissioning, Calibration and Operation
8.1 Commissioning
After connecting the transmitter to the 24V power supply, it starts the power on
procedure for a few seconds. During this time, the sensor LED flashes blue. The power
on procedure is sinalized with 3mA at the analog output. Subsequently the device is
ready to use and the measurement value of particle load is output in the 4-20mA range.
8.2 Calibration
The FS750E is pre-calibrated by the manufacturer. The entire measuring range is
mapped to the output range 4-20mA. There are two adjustment options for an individual
customization of the analog output range.