June 28, 2016, 715003956 Rev. C
Page 19
1.6 Identifying your instrument version
The information and procedures in this guide include variations based on the model of the QDa
that you are operating and maintaining. The following table and figures, include some basic details
to help you identify your instrument and to refer to the appropriate information for your version and
model.
Figure 1–1: QDa with internal, source exhaust (KAD version)
See also:
• Maintenance Procedures, on page 25.
• External Connections, on page 79.
Table 1–1: Instrument versions
Serial number
suffix
Models Backing pump Source exhaust
KAD Performance Diaphragm (attached) Internal valve
Standard Rotary (external)
KAB Performance Diaphragm (attached) External valve assembly
Standard Rotary (external)
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