Teledyne Advanced Pollution Instrumentation (TAPI)

- Model T201 - Chemiluminescence NH3 Analyzer


The Model T201 combines a specially configured chemiluminescence analyzer with an external thermal converter to give stable and repeatable NH3 measurements at very low levels. In addition, the T201 provides simultaneous values for NO, NO2, and NOx concentrations. The T201 is ideal for trace ammonia monitoring applications in ambient air as well as in clean rooms and make-up air units. Optional zero and span valves allow automatic, unattended calibration checks.

The Model T201 achieves its remarkable stability by means of an AutoZero valve which measures and corrects for zero noise. Multiple self-checks are performed continuously to insure maximum up-time while an innovative sample path, plumbed with specially conditioned materials, preserves the NH3 sample and reduces interferents to a minimum.

All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information is available through the front panel, or via RS232, Ethernet, or USB com ports either locally or by remote connection using the included APIcom™ software.

  • Ranges: 0-50 ppb to 0-2,000 ppb, user selectable
  • Independent ranges for NH3, NO, NO2, NOx
  • Large, vivid, and durable color graphics display with touch screen interface
  • Ethernet, RS-232, and (optional) USB com ports
  • Front panel USB connections for peripheral devices and firmware upgrades
  • 8 analog inputs (optional)
  • Adaptive signal filtering optimizes response time
  • Temperature & pressure compensation
  • Comprehensive internal data logging with programmable averaging periods
  • Ability to log virtually any operating parameter
  • Two-year warranty


  • Ranges
    • Min: 0-50 ppb Full scale
    • Max: 0-2,000 ppb Full scale (selectable, independent NH3, NO, NO2, NOx ranges supported)
  • Measurement Units: ppb, ppm, μg/m3, mg/m3 (selectable)
  • Zero Noise: < 0.5 ppb (RMS)
  • Span Noise: < 0.5% of reading (RMS) above 50 ppb
  • Lower Detectable Limit: 1 ppb
  • Zero Drift: < 0.5 ppb/24 hours
  • Span Drift: < 1% of full scale/24 hours
  • Lag Time: 40 seconds
  • Rise and Fall Time: < 120 seconds to 90%
  • Linearity: 1% of full scale
  • Precision: 0.5% of reading
  • Sample Flow Rate: 1000 cm3/min ±10%

Electrical Specifications

  • Power Requirements: 100V-120V, 220V-240V, 50/60 Hz
  • Analog Output Ranges: 10V, 5V, 1V, 0.1V (selectable)
  • Recorder Offset: ±10%

Communication Specifications

  • Included I/O
    • 1 x Ethernet: 10/100Base-T
    • 2 x RS232 (300-115,200 baud)
    • 2 x USB device ports
    • 8 x opto-isolated digital outputs
    • 6 x opto-isolated digital inputs
    • 4 x analog outputs
  • Optional I/O
    • 1 x USB com port
    • 1 x RS485
    • 8 x analog inputs (0-10V, 12-bit)
    • 4 x digital alarm outputs
    • Multidrop RS232
    • 3 x 4-20mA current outputs

Physical Specifications

  • Operating Temperature Range: 5 - 40ºC
  • Dimensions (HxWxD)
    • Analyzer: 7” x 17” x 23.5” (178 x 432 x 597 mm)
    • Converter: 7” x 17” x 23.5” (178 x 432 x 165 mm)
  • Weight
    • Analyzer: 43 lbs (19.5 kg)
    • External pump: 15 lbs (7 kg)

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