Lunt PC1-USB Pressure Tuner Controller
The Lunt Pressure Tuner Controller is a microprocessor controlled and remote operable pressure control system that can be retrofitted to any Lunt PT product without return to the Lunt facility. A simple 1/8" airline is used to connect the PC1-USB to the telescope and can be installed at any length. The PC1-USB system is a simple two button system; one increases pressure, the other decreases it. Visible digital feedback and indicator lights give feedback on the pressure levels you are regulating. The PC1-USB can run continuously on internal battery power for more than 12 hours. It has external power input (12-15 VDC) (120/240 VAC to 12 V adapter) that can power the unit and charge the internal batteries simultaneously.
Any and all existing Pressure Tuner systems can be retrofitted using an adapter to the pressure tuner knob so as to accept this controller. Of note is that when powering up, the PC1-USB will go through a systems vent and ambient pressure set mode. The PC1-USB can be factory or user programmed to center wavelength setpoint. Due to the sealed nature of this system, the center wavelength setpoint will remain constant regardless of altitude shift.
This controller is accurate to 0.3 PSI, meaning that it is extremely precise in control of the pressure setpoint. Furthermore, the PC1-USB will automatically compensate for temperature shifts and how they might affect the pressure. Because the PC1-USB can provide closed-loop feedback of internal etalon pressure, users can correlate change in pressure to doppler shifted events.
Manufacturer Product Number: PC1-USB