Ametek Thermox 2000 ATEX Series User Manual page 42

Figure 3-9.
RCU Plumbing.
ASPIRATOR AIR INLET
1/4"NPT (F) 60 PSI MAX.
3-18 | Thermox Series 2000 WDG-HPII / HPIIC - ATEX
OPTIONAL COMBUSTIBLES
MIDRANGE VERIFY SPAN
GAS 1/8"NPT (F) 10 PSI
ZERO GAS INLET
1/8"NPT (F)
10 PSI
ASPIRATOR AIR OUTLET
1/2" CONDUIT ENTRY
(2.22cm)
CHECK VALVE
The "Methane Span Gas" connection does not apply to the ATEX
HPII Series 2000 analyzer. The purpose of the drawing is to identify
various parts of the RCU.
NOTE
COMBUSTIBLE
SPAN GAS
1/8"NPT (F)
10 PSI
METHANE
SPAN GAS
1/8"NPT (F)
10 PSI
1/8" NPT (F)
CALIBRATION GAS
OUT TO SENSOR
1/4"NPT (F)