FT20: Frequency Transmitter

- High accuracy

- Convert frequency to voltage or current to   voltage or current

- Selectable input frequency

- Complete input - output isolation


            Frequency Transmitter FT20 accepts pulse rate input from turbine meter, contact closures, proximity switch, magnetic shaft speed pickup and other frequency generating devices. Output is proportional to input frequency in standard current or voltage signal. Output ripple is less than 10 mv Peak-to-peak to meet requirements for direct input to a process computer.


Frequency Input

Number of channel:

1 Channel

Input type:

Frequency (3 Wire D.C. proximity switch NPN or PNP)

Input range:

25 Hz, 50 Hz

100 Hz, 200 Hz, 400 Hz, 800 Hz

1.6 KHz, 3.2 KHz, 6.4 KHz, 12.8 KHz

Sensor Power Supply:

12 VDC (20 mA)


Adjustable ± 50% of selected input frequency


Adjustable ± 10% of selected input frequency

Analog Output

Number of channel:

1 Channel

Output type:

Current, Voltage

Output range:

Current (0 to 20, 4 to 20 mA)

Voltage (0 to 5, 1 to 5, 0 to 10 VDC)


± 0.5 % of span

Isolation voltage:

Input ,output and power supply and isolated with no D.C. connections

Power Requirements

Power Supply:

110, 220 VAC

24 VDC (Optional)

Environmental Limits

Operating Temperature:

0 to 55 °C

Operating Humidity:

5 to 95 %RH

Storage Temperature:

0 to 70 °C

Physical Characteristics


W50 x H70 x D130 mm.


Wall or DIN rail


Plug-in 11 pins socket


Warranty Period:

5 year

Ordering Information: Specify input frequency, output, power supply
Example FT20/0-200 Hz/4-20 mA/220 VAC



Package Checklist

1. FT20