DESCRIPTION

The Series 9100 consists of a single chassis supporting 2 thermal mass flow controllers, an ozone generation module, a mixing zone, a reaction chamber for gas phase titration, and control electronics.

Commands are entered from the front panel and displayed on a backlit 25 line by 80 character liquid crystal display. The instrument may also be operated using contact closures or an RS-232 serial data interface.

The mass flow controllers are calibrated to a NIST (National Institute of Standards and Technology) traceable primary flow standard. The calibration data consists of a comparison of desired versus actual flow over the full dynamic range of the instrument, with linear interpolation between points. Calibration data is stored in the non-volatile memory and may be updated by the user with a suitable standard.

The Series 9100 ozone generator is factory calibrated using a NIST traceable ozone standard. This temperature controlled, ultra-violet (UV) based ozone generator includes a precision photo-optical feedback circuit to compensate for lamp aging effects as well as built-in pressure compensation.

The Series 9100 is available in either a standard 19" rack mount or bench top configuration.

PRODUCT FEATURES AND BENEFITS

• 25 line by 80 character display permits editing and viewing of an entire seven-day schedule of calibration events in worksheet format.
• Automatic calculation of dilution and span gas flows based on commanded concentration eliminates the need for manual computation and allows rapid transition from point to point.
• Internally-stored mass flow controller calibration data improves accuracy by as much as a factor of ten and simplifies field recalibration.
• Internally-stored ozone generator calibration data insures linear, repeatable ozone generation without photometer control. Ozone generator performance exceeds U.S. EPA criteria for ozone transfer standards.
• Ozone generator pressure compensation insures repeatable ozone generation at a flow rate and back pressure other than that at which it was originally calibrated.

SOFTWARE

• Concentration Mode: User enters Target Output Gas Concentration (ppm or %) for the span gas. The actual concentration is displayed during mixing.
• Flow Mode: User enters Target Flow Rate (cc's or liters per minute) for the span gas and dilution gas. Actual flow rates are displayed after mixing is initiated.
• Volts Mode: User enters a command voltage to the mass flow controller and the ozone generator. The actual voltage is displayed during operation.
• Program Mode: Permits multi-event programming and unattended automatic operation of the instrument over a seven-day schedule.
• Calibrate Mode: User enters new calibration data for each mass flow controller and ozone generator. (Can be password protected)
• Maintain Ports: User enters the name of the span gas in the source cylinder, its concentration (ppm) and the port to which the cylinder is connected.

SPECIFICATIONS

Accuracy              From 10 to 100% of Full Scale Flow
   Concentration:         ± 1.0%
   Flow:                  ± 1.0%
Repeatability:             0.05%

Warm up time:	30 minutes
Response time:	30 seconds to ±2.0% of Setpoint

  Concentration Range:    0.5 - 1.25ppm at 10 slpm
  Accuracy:               ±2% or ±0.005ppm at 10 slpm
  30 day repeatability:   ±2% or ±0.005ppm

Inlets
  Balance:      One external ¼" Swagelok*
  Span(s):      One external ¼" Swagelok*

Outlet
  One external ¼" Swagelok*

       * (or compatible fitting)

Operating Pressures (at inlets)
  Minimum:        10 psig (0.67 Bar)
  Recommended:    25 psig (1.68 Bar)
  Maximum:       150 psig (9.87 Bar)

Wetted Surfaces
  Tubing:       Teflon
  MFC's:        Stainless Steel
  Seals:        Viton®

Operating temperature:    32° - 122° F   (0° - 50° C)
Performance temperature:  59°  - 95° F  (15° - 35° C)

Weight
  Minimum:      35 lbs. (16 Kg.)
  Maximum:      40 lbs. (18 Kg.)

Dimensions (w x h x d)
  Portable:  17" x 7" x 23.5"
             (43.18 cm x 17.78 cm x 59.69 cm)
  Rack:      19" x 7" x 23.5"
             (48.26 cm x 17.78 cm x 59.69 cm)

  Standard:  115 VAC (100 to 130 VAC), 50/60 Hz
  Optional:  220 VAC (200 to 260 VAC), 50/60 Hz
  Current:     3 Amps (maximum)

  Inmos T 400 series, 32 bit processor
  12 bit A/D and D/A conversion

  Front panel membrane keypad
  Internal timer control
  Optional RS-232 serial data interface
  Optional Status board interface
  Other communications options available

  Optional RS-232 port serial data interface
  Optional Parallel printer port (Centronics compatible)