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FW-F103-P-XN-M_v2002_03_EN.docx
Type OT / Type OG
Two passive transistor outputs are available with this option with a maximum driving capacity of
300mA and 30V DC. The maximum pulse frequency of output D2 is 500Hz, for output D1 the
minimum on and off-time is 50μs (max. 10kHz).
Fig. 25: Terminal connections –Transistor outputs D1 and D2
4.6.4 TERMINAL 07-08: ANALOG OUTPUT – TYPE AH
An analog output signal proportional to the flowrate is available as standard. The function of the
analog output is determined by the settings of SETUP-menu 7: Analog output (see chapter 3).
This output is a passive isolated 4-20mA output with the possibility to power the device via the
4-20mA loop. When the output is disabled, the current is by default about to 3.5mA; when the output
is enabled a current between 4-20mA is generated.
The analog output requires a minimum voltage of 10V across its terminals to function properly. This
means that when connected to a 24V supply, the additional devices in the loop may take up a
maximum of 14V, which equals a maximum driving capacity of 700 Ohm at 20mA.
If the device is only powered by the loop the backlight will not be activated.
Fig. 26: Terminal connections - Isolated 4-20mA analog output
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