Based on the stable and long-life Pico-Ion oxygen sensors, the PI2 range of trace oxygen analyzers provides accurate and stable measurements of oxygen down to low parts per trillion. Low cost of ownership through minimal maintenance of this high-performance oxygen analyzer make measurement of oxygen down to ppt level easy and affordable for customers with limited budgets.

Features of Oxygen Analyzers for Ultra-High Purity Gases

  • Measuring trace O2 in ultra-pure Ar, H2, He and N2
  • LDL to less than 100 ppt
  • Low cost of ownership
  • User friendly and easy to operate and maintain
  • Fast recovery from process upsets
  • Integrated bypass sample system as standard
  • Optional auto calibration system with true zero feature via O2 scrubber

PI2-MS 1000 PI2-MS 500 PI2-UHP 100 PI2-UHP 50
Measurement range 0-1, 0-10, 0-100, 0-1000 ppm 0-0.5, 0-1, 0-10, 0-100, 0-1000 ppm 0-100 ppb, 0-1, 0-10, 0-100 ppm 0-50, 0-100 ppb, 0-1, 0-10 ppm
Accuracy at constant conditions < 3% of reading or ±5 ppb (whichever is greater) ±3% of reading or ±0.5 ppb (whichever is greater)
Response time T90 <15 seconds
Sensitivity (LDL) < 5 ppb < 2.5 ppb < 250 ppt < 100 ppt
Linearity < 1% of scale
Sensor GPR-12-2000 MS-2 GPR-12-2000 MS-2E GPR-13-2000 UHP-2 GPR-13-2000 UHP-2E
Sensor life at 25ºC (77°F) and 1 atm 12 months
(Up to 24 months for the MS versions)
Calibration interval 30 days
Inlet pressure 1.4-3.4 barg (20-50 psig) with atmospheric vent, max 10.3 barg (150 psig)
Flow rate 0.5 - 1.0 l/m (1-2 SCFH)
Gas connections 1/4" compression tube fittings
Option: 1/8" or NPT fittings
Inlets: 1/4" face seal fittings;
Vent and pneumatic valves: 1/4" compression tube fittings
Wetted parts Stainless Steel
Display Graphical LCD 12 x 7cm (5 x 2.75”); resolution 0.1
Enclosure Bench top, painted sheet metal (35 x 25 x 34cm (13.9” x 9.9” x 13.4”))
Options: panel or 19” rack mount, wall mount (30.5 x 30.5 x 20.3cm (12” x 12” x 8”)) Bench top Options: panel or 19” rack mounting
Compensation Barometric pressure and temperature; heated sample system and sensor housing
Signal output 4-20 mA isolated, 0-1V and 0-5V
Range ID 1-5V DC or 4-20mA, optional relay contacts
Communications Choice of USB, RS232
Alarms 2-off user-adjustable alarms form C relay contacts non-latching
Operating temperature 0° to 45°C (32°F to 113°F)
Power 100-240 V AC

PI2-UHP 50/100 and PI2-MS 500/1000

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CALL 909-392-6900
Analytical Industries Inc.
2855 Metropolitan Place,
Pomona, CA, 91767
What we do
Analytical Industries Inc manufactures high-quality electrochemical oxygen sensors and gas analyzers for industrial process control as well as breathing air for diving and medical treatment.