Centerville, IA

 Latitude:  40.7919 N

 Longitude:  92.8775 W

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 Elevation: 286 m ASL

 Installation date:  27-Apr-07

 Sampling heights:  30 / 110 m AGL

 Instrument:  CADS06

 Reference tank 1:  CAO6455 / 361.00 ppm / 1950 psi (1550 psi Feb-08; 1000 psi Nov-08)

 Reference tank 2:  CAO6402 / 396.14 ppm / 1750 psi (1300 psi Feb-08; 800 psi Nov-08)

 Notes:  Nov-08 exchanged CADS06 PVU with CADS07 PVU with new pump and replaced fuse

 Calibration date:  22-Apr-07

 To see all pictures, click here.