Flow Cap; Sunshield - MSA PrimaX IR Manual De Operación

MSA
7.1

Flow Cap

Fig. 22 Flow cap
The flow cap is for use with a sampling system. It is available in 316 stainless steel
and is secured to the sensor in place of the environmental guard with two screws.
A 3-way pushbutton valve is available for ease of calibration when using the flow
cap. The sample flow and the calibration gas can both be plumbed to this valve, and
the operator holds down the pushbutton to switch the flow to the calibration gas.
For FM and CSA approval, flow proving devices must be provided when the flow
cap is installed.
Use a gas flow rate of 1.5 l/min when using the flow cap to achieve the response
times stated in chapter 6.
Using the flow through adapter can extend the response time, depend-
ing on the gas flow rate and system design.
7.2

Sunshield

The sunshield is a 316 stainless steel plate that protects the sensor from direct sun-
light and from excessive temperature rise.
This sunshield is not included in the cFMus performance approval.
Fig. 23 Sunshield
US
PrimaX IR
Accessories
41