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36 LF-Series Flowmeters: Sensor/Transmitter Installation
I/O Wiring – FM CIO Transmitters
Figure 7-7 Frequency output – Terminals 5 & 6 (Channel C) – Internal power
Figure 7-8 Frequency output – Terminals 5 & 6 (Channel C) – External power
Output voltage level is +15 VDC ± 3%
Note: See Figure 7-14 for output voltage versus load resistance.
Counter
+
–
00042
Note: Refer to Figure 7-15 for recommended resistor versus supply voltage.
CAUTION
Excessive current will damage the transmitter.
Do not exceed 30 VDC input. Terminal current must be less than 500 mA.
+
–
Counter
3–30 VDC
+
–
+
–
Pull-up resistor
00042