Emerson Rosemount Model 500, Retrofit Instructions

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A Engineering drawing
Notes
1. Change out thermistors to 3-0500-521 for H
2
carrier.
2. Add valve actuation inert gas inlet that is separate from the hydrogen carrier gas
inlet.
WARNING
Do not use hydrogen for valve actuation.
3. Add carrier shut-off valve (2-4-4000-190) as shown.
4. If the carrier pressure regulator is a Masoneilan 60-110 psig regulator
(2-4-9500-084), replace it with the Parker 10-100 psig regulator (2-4-5001-977)
included in the kit.
5. Add
⅛
-in. tee connections:
a. Preheat coil
b. Reference detector
c. To analytical valve
6. New reference vent.
Retrofit Instructions Engineering drawing
SK-07781 September 2019
Rosemount Model 500 Helium to Hydrogen Gas Conversion Kit 25