Omega manual FTB600B Series Infrared Sensors, Supply Voltage, Frequency Output

FTB600B Series	4
Infrared Sensors

Section 4 - Infrared Sensor

A. Supply Voltage

24 Vdc. Do not exceed 24 Vdc. Doing so can cause overheating and eventual failure of all PC boards. Printed circuit boards are non- repairable.

B. Frequency Output

1.Square wave pulse, unscaled (See Figure 4-1)

2.Output impedance 75 ohms

3.Directly proportional to flow rate

4.Output - dc frequency

5.Offset 0.64 volts

6.Peak voltage = Supply voltage - 1.2 volts

7.Peak to peak voltage Supply voltage - 1.2 volts - 0.64 volts

8.Output signal cycle 66.7% (i.e. at 100 Hz there is a 6 millisecond “on” time and a 4 millisecond “off” time)

9.TTL/CMOS circuit compatibility. The FTB600B Series has an operational amplifier output, which has a high input impedance and a low output impedance.

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