MKS 649B - Appendix B: Model Code Explanation; Model Code

Appendix B: Model Code Explanation Model Code
49
Appendix B: Model Code Explanation
Model Code
The options of your 649 unit are identified in the model code when you order the unit.
The model code is identified as follows:
649BGGGXXXYYYZAB
where:
649B GGG XXX YYY Z A B
Type Number
Gas Code
Pressure Range
Flow Rate
Valve Orifice Size
Valve Plug Seat Material
Fittings
Type Number (649B)
This designates the model number of the instrument. 649B designates the ROHS compliant
version of the 649 product.