2.3.4  Weather Housing
Caution:  This accessory should not be used for calibration purposes.
    This accessory is not recommended for use in still air conditions.
Part Number: 2110B2150
2.  OVERVIEW
 
The Weather Housing accessory protects the sensor from hosing down/ cleaning operations and 
from extreme weather conditions, (e.g. torrential rain, storms, gales etc.). Conforms to CSA C22.2 
No. 152whenttedtotheCertiedSensorwithspeciccartridgesinstalled.Seespecications 
for details.
Theweatherhousingshouldnotbettediftheoperatingenvironmentofthesensordoesnotrequire
the additional protection afforded. In still air conditions the gas is transported to the face of the sinter 
is by diffusion only. Under such conditions the weather protection will slow the rate at which gas can 
reach the sensing element and consequently the speed of response of the sensor to gas will  
be reduced.
As well as providing weather protection the housing also provides a means to directly inject gas to 
thefrontofthesensorviaa1/4in.O/Dnozzleforgasresponsechecking.Therecommendedow
rate for response checks is 1 litre per minute. Accuracy of reading is not guaranteed. Do not carry 
outresponsechecksatwindspeedsgreaterthan10m/s(22mph).
Theaccessoryisattachedtothesensorbymeansofabayonettting.
Note:   The sensor will exhibit an increased reading(or indication) to gas with higher wind speeds.  
 Fittingtheweatherhousingwiththesuppliedhydrophobiclterwilleliminatethiseffectbut 
  increase the response time.
53mm
57mm