The PA1001A series preamplifiers/signal conditioners and converters are suitable for use with either magnetic or RF type pickup coils and allow convenient interfacing with process measuring devices and digital electronics. When used with Magnetic type pickups they accept low level signals and produces a pulse output, while providing rejection of unwanted noise and false signals. A RF type pickup reduces the pickup drag associated with conventional magnetic pickups, resulting in a significant increase in the usable range. The PA1001A series excite a RF type pickup with a 20KHz signal. Motion of ferrous material is sensed and the motion modulates the coil field and subsequent conditioning provides a pulse output signal. The output signal of the PA1001A series have a square pulse wave form, each pulse representative of an actuator (rotor blade, gear tooth, turbine blade, etc.) passing by the sensing area of the pickup. Four output signal options are available: i. TTL/CMOS compatible ii. Open collector iii. 0 to 10VDC square wave and iv. A square wave that is tied to the input power. The unit is powered by a user supplied 8 to 30 VDC filtered power supply. An on-board regulator provides the required regulation and noise rejection. Optional features include f
The PA-1001A series preamplifiers and signal conditioners are designed for use with either magnetic or RF type pickup coils to interface with process measuring devices and digital electronics. The unit accepts low-level signals from magnetic pickups or excites RF pickups with a 200KHz signal to detect motion of ferrous materials, producing a square pulse wave output.
| Power Input Voltage | 8-30 VDC |
|---|---|
| Current Draw | 125mA @ 24VDC |
| RF Modulation Carrier Frequency | 20KHz |
| RF Input Frequency | 2 Hz to 5KHz |
| RF Trigger Sensitivity | 20 millivolt peak to peak |
| Magnetic Input Frequency | 0 to 10KHz |
| Magnetic Trigger Sensitivity | 4 millivolt RMS |
| Input Impedance | 40K Ohms |
| Maximum Input Signal | 600 Volts RMS |
| Maximum Distance From Pickup To Preamp | 100 feet |
| Operating Temperature | -40°C TO 85°C |
| Storage Temperature | -40°C TO 150°C |
| Pulse Scaling Options | +2, +4, +8, +16, +32, +64, or +128 |
| Current Output Accuracy | +/- 0.05% of full-scale |
| Voltage Output Accuracy | +/- 0.05% of full-scale |
| Response Time | 0.3 seconds for 10 to 90 % |
The PA-1001A series is suitable for use with either magnetic or RF type pickup coils.
The unit is powered by a user supplied 8 to 30 VDC filtered power supply.
Four options are available: TTL/CMOS compatible, Open collector, Q to 10VDC square wave, and a square wave tied to the input power.
The pickup coil should not be located more than 100 feet from the PA1001A preamplifier.