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Havar Diaphragms:
Standard Diaphragm material used with PMC 1 1/2" Electronic
Transmitters.
Standard Diaphragm material used with
all PMC Pneumatic Transmitters.
High Strength Non-Magnetic Alloy (316 S/S + 42%cobalt), good corrosion
resistance.
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Hastelloy C Diaphragms:
Standard Diaphragm material used with PMC 1" Minature Electronic
Transmitters.
Caustic and acid resistant. Exhibits excellent resistance to the
following types of acids: Acetic, Formic, Hydrochloric, Hydrofluoric,
Nitric, Phosphoric and Sulfuric. |
Tantalum Diaphragms:
Provides superior corrosion resistance, strength, toughness and
thermal conductivity.
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Ceramic Diaphragms:
Available only on Electronic Transmitters.
Developed for
high wear applications. Environments such as tobacco
stock lines, pulp and paper cleaner systems, wastewater treatment
and other high flow mediums with particulates. This combination
of high flow and abrasive materials can, over time, wear down a
metallic diaphragm. A traditional metallic diaphragm will permanently
lose its zeroing ability as the wear on the diaphragm increases.
As the process medium wears the ceramic diaphragm down simply re-zero
the sensor. This can be done many times over the life of the transmitter.
The ceramic diaphragm also gives added stability to the unit. Orientation
during calibration does not affect the transmitter.
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