PPM100 — Partial pressure monitor for RGA

The PPM100 is a stand-alone controller/monitor for SRS residual gas analyzers. It measures partial pressures from SRS RGAs and total pressure from up to four capacitance manometers. Graphical output is available on a touch screen LCD display. The PPM100 includes 8-channel process control capability, four analog I/O ports, RS-232, USB and GPIB computer interfaces, and a web interface.

Description

PPM100 Specifications

Display
Type Back-lit, touchscreen LCD (4.7″ diag.)
Resolution 320× 240 pixels
Modes Numeric, bar graph, P vs. T
Units Torr, mbar, bar, Pa and micron
Numeric resolution 3-digit mantissa plus exponent
Update rate 2 samples per second
Analog I/O
Ports 4 configurable analog ports
Range ±12 VDC
Resolution 14-bit (In), 12-bit (Out)
Update rate 2 Hz
Connector BNC
Capacitance Manometer
Number of gauges Simultaneous readout of up to four capacitance manometers using the auxiliary inputs.
Auxiliary power output ±15 VDC, 100 mA (for CM power)
Process Control
Number of channels 8 channels with programmable setpoint, polarity, hysteresis, delay, audio signal and text messages.
Input signals Total pressure (CM gauge), partial pressure (RGA), voltage (analog I/O ports), time (internal clock), TTL and gauge status.
Output signals Relay and TTL level
Relays SPDT, form C, 5 A / 250 VAC / 30 VDC, resistive load
     TTL outputs Active low, opto-isolated
     Manual control All channels can be operated from the front panel.
Remote TTL control 7 opto-isolated channels (Fil on/off, Degas on/off, Fil lockout, Keypad lockout, Data logging reset, screen enable/disable, remote enable/disable)
General
Interfaces RS-232, USB, and GPIB (std.). Ethernet interface w/ embedded web server
Power 90 to 264 VAC, 47 to 63 Hz, 60 W
Operating temperature 0 °C to 40 °C, non-condensing, <90 % humidity
Weight 11 lbs.
Dimensions 8.5″ × 5.25″× 16″ (WHL)
Warranty One year parts and labor on defects in materials and workmanship