Teledyne API

- Model T753U - Portable Trace-Level O3 Calibrator​

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The Model T753U is a portable, microprocessor based precision Calibrator for Ozone gas instruments and sensors. Using a sophisticated Ozone generation system, combined with a sensitive photometer and pneumatic design, the T753U produces stable and reliable concentrations of Ozone in a convenient and rugged package based on our popular T750U Portable Multigas Calibrator platform. The T753U is housed in a high-density, molded travel case which includes an integral handle and wheels for durability and ease of use in the field for virtually any application. An internal zero air option extends the T753U's capabilities to also provide a clean and dry source of zero air, eliminating the need for a separate source of zero air. The internal zero air source module contains a software driven electronic inlet valve manifold allowing the calibrator to automatically switch between internal and external zero air sources depending on the application needs.

The T753U operates in two modes; a high range, and a low range, or 'fractional' mode, for producing accurate Ozone levels down to 2 ppb which meets the latest US EPA calibration requirements for Trace-level Ozone gas instruments. The mode is automatically selected based on the Ozone concentration range chosen by the user. To ensure high accuracy and stability of the Ozone output, the calibrator constantly measures the Ozone concentration being produced with an internal photometer and uses it to actively control the Ozone generator in real-time. The internal photometer can be certified by another external Reference Standard by simply using the 'photometer input loop' located beneath the fold up panel. The T753U Portable Ozone Calibrator combines performance and convenience for the most demanding applications.

The T753U Portable Ozone Calibrator's performance is characterized by our own Model T265 Chemiluminescence O3 Analyzer; a US EPA Federal Reference Method (FRM) for Ozone. With an interference-free Ozone measurement and best available lower detection limit (LDL) of < 0.3 ppb, the T753U performance is proven by the most sensitive Ozone gas analyzer technology available.

All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, and flexible I/0.  All instrument set up, control and diagnostic information is available through the front panel, or via RS232, Ethernet, or the optional USB com port, either locally or by remote connection.

The Model T753U comes with NumaView ™ Software.  NumaView™ Remote PC software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView ™ software.

  • Transfer standard for calibration of ozone analyzers
  • Stable and accurate ozone output to 2 ppb
  • Built-in ozone generator and photometer
  • Large, vivid, and durable color touchscreen display
  • Ethernet, RS-232, and (optional) USB com ports
  • Front panel USB ports for peripheral devices and firmware upgrades
  • 12 independent timers for sequences
  • Nested sequences (up to 5 levels)
  • Flow adjustable from 2 to 5 LPM (with internal zero air source)
  • Flow adjustable from 2 to 15 LPM (with external zero air source)    
  • Inlets for external ozone reference sources
  • Internal Zero Air Source Module (optional)
  • Two-year warranty

  • System :
    • Flow Rate (with internal zero air source)  : 2 to 5 LPM adjustable
    • Flow Rate (with external zero air source)  : 2 to 15 LPM adjustable
    • Linearity  : ± 1% of full scale
    • Precision : 1.0 ppb
    • Response Time  : < 240 seconds to 95%
    • Span Drift (7 days) :
      • < 1% with photometer feedback
      • < 3% without photometer feedback (CNST)
  • Ozone Generator Module :
    • Maximum Ozone Concentration : 1250 ppb at 2 LPM
    • Minimum Ozone Concentration : 2 ppb at 5 LPM
    • Response Time : < 180 seconds to 98%
  • UV Photometer  :
    • Range   : 0 - 100 ppb to 0 - 10 ppm
    • Rise/Fall Time  : < 20 seconds to 95% (photometer response)
    • Zero Drift  : < 1.0 ppb/24 hours
    • Flow Rate  : 800 cc/min ±10%
  • Electrical Specifications  :
    • Power Requirements  : 100V-120V, 220V-240V, 50/60 Hz
    • Analog Output Ranges (Test Channel)  : 10V, 5V, 1V, 0.1V (selectable)
  • Communications Specifications :
    •  Included I/O : 
      • 1 x Ethernet: 10/100 Base-T
      • 2 x RS232 (300-115,200 baud)
      • 2 x USB device ports
      • 12 x digital control outputs
      • 12 x digital control inputs
      • 8 x digital status outputs
    • Optional I/O : 
      • 1 x USB com port
      • 1 x RS485
      • Multidrop RS232
  • Physical Specifications :
    • Operating Temperature Range  : 5 - 40°C
    • Dimensions (HxWxD) : 9” x 17” x 21” (229 x 432 x 533 mm)
    • Weight :
      • 41.5 lbs (18.8 kg) with internal zero air option
      • 38.5 lbs (17.5 kg) without internal zero air option

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