The 42i-Y utilizes chemiluminescent technology measures the amount of nitrogen oxides in the air from sub-ppb levels up to 1000 ppb. The Model 42i-Y is a single chamber, single photomultiplier tube design that measures NOy which includes most oxides of nitrogen with the exception of NH3 and N2O.

Chemiluminescence technology
Standard dual range and auto ranges
10-second response time
Temperature and pressure correction
User selectable alarm levels for concentration
Ethernet connectivity for efficient remote access
Enhanced user interface with one button programming and large display screen
Flash memory for increased data storage and user downloadable software
Enhanced electronics design optimizes product commonality
Improved layout for easier accessibility to components
Voltage options:
  A = 115VAC 60Hz
  B = 220/240 Vac 50Hz
  C = 220VAC 60Hz
  D = 115VAC 50Hz
  J = 100VAC 50/60Hz
Internal zero/span:
  N: No zero / span valve
  Z = Internal zero span assembly
Converter options:
  M = Molybdenum (standard)
Sample handling:
  S =: Standard plumbing (standard)
Ozone handling:
  D = Drierite scrubber (standard)
  P =: Permeation dryer
Optional I/O:
  A = None (standard)


C = I/O expansion board
Mounting Hardware:
  A = Bench mounting (standard)
  B =: Ears and handles, EIA
  C =: Ears and handles, Retrofit
Compliance: ETL, CSA, UL, CE