●
Flow ranges (standard factory settings)
Grounding
Cable connections
Pin
1
2
3
4
5
6
7
8
Current output active Ia (basic I/O)
03/2022 - 4009292701 - FLEXMAG 4050 C R01 en
3
4
Scan the code on the nameplate or scan
the following code and enter the serial
number.
Contact
Select your country from the region / language selector to view
your local KROHNE contact details on:
www.krohne.com
The frequency output is polarity sensitive. If connected incorrectly, the device will be damaged.
Download documents/software
Flow tube label
Pulse/frequency output passive Pp (basic I/O)
For the correct calculation of the flow rate make sure that;
After each change of the single-use flow tube, to check and enter the maximum flow (Qmax.) and the
k-factor of the new flow tube into the formula of the control system.
The k-factor is put in the control system correct and accurately (without typing an error, with 3 digits
after the decimal point) as printed on the flow tube label.
The tube diameter is entered in the control system (¼ - ⅜ - ½ - ¾ or 1", as printed on the label).
2
Electrical connection
3
Quick Setup
All work on the electrical connections may only be carried out with the power disconnected. Take note of the voltage
data on the nameplate! Observe the national regulations for electrical installations!
The device must be grounded in accordance with regulations in order to protect personnel against electric shocks.
Observe without fail the local occupational health and safety regulations. Any work done on the electrical components
of the measuring device may only be carried out by properly trained specialists.
Flow tube size
¼ "
Refer to the manual for more details on connection options.
●
●
Flow range (L/min.)
0.015...3
0.07...14
0.1...20
0.3...62
⅜"
½ "
¾"
1"
0.5...75
Function
Wire colour
Not used
White
+ 24 V DC
Red
Make sure to use a galvanically isolated power source.
Avoid any electrostatic discharge, to minimize the risk of non-reversible damage.
The transmitter is working with the pulse or mA output. Do not connect both outputs at the same time.
The cable of the output which is not used, should be cut short or placed in a connector with open ends.
Connection diagram
Current
Brown
Current output -
Green
To be connected for service only
Pink
Ground (GND)
Blue
Frequency output (+)
Yellow
Frequency output (GND)
Grey
