Mezzanine Modules
A mezzanine module conditions the signal from a non-conductivity detector. The mezzanine
plugs into the Base3 DPM in order to tailor the DPM for a specific measurement.
Three primary types of mezzanine are available to accommodate FID and FPD detectors, and
various detectors that produce a scaled analog output (AI) mezzanine. Some of the
mezzanines have a dual range function for maximum flexibility. See the table below for details
relating to the various mezzanine options.
The AI mezzanine can be used for reading a detector voltage signal from a specialized or third
party detector, such as the Valco PDD, where the device only supplies a scaled voltage output.
The AI signal will be treated like a normal detector signal, with a 50% balance range.
Table 2-4 Mezzanine Part Number Descriptions
Mezzanine Detector Sub
Module Type
Usage Normal
Range
Alternate
Range
2020960-001 FID Low level FID 0.2nA none
2020960-003 Standard FID 1nA 20nA
2021328-002 Large Scale FID 100nA 1000nA
2021328-001 FPD FPD 100nA none
2021328-003 FPD, 0.18 Hz Filter 100nA none
2021326-001 Universal Voltage AI ±1V ±10V
1901614-001
Dummy Plug
When Base DPM is Filament only,
and no mezzanine required
none none
2.5.3 Replacing a Base3DPM
Removing the Base3DPM
See the illustration
Base3 DPM With Mezzanine Module
and
Temperature Setpoint Modules
Installed on Left Side of Base3DPM
for connector and module locations.
1. Back up and shut down the unit using the
General Analyzer Shutdown Procedure
.
2. Open the electronics enclosure door.
3. Disconnect the detector signal cable from the mezzanine module.
– FID and FPD mezzanine modules use SMA coaxial cables. Unscrew the nut to unplug
the cable.
– Analog input mezzanine modules use small terminal block connectors that can be
unplugged.
4. Disconnect the fIlament detector cable if present.
5. Disconnect the RTD temperature input cables (top rear of unit, if present).
6. If present, take out screws holding the IS ground cables (typically only installed on modular
oven models).
7. Remove the nut on the bottom-front of DPM bracket.
Electronic Compartment Component Descriptions and Maintenance Procedures
2.5 Detector Personality Modules
Maxum II Reference Manual
66 Manual, 7/2017, 2000596-001
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