德國(guó)AB MDM 7410 7420 7450
微型 耐高溫 耐高壓焊接式隔膜壓力表
Diaphragm Seals
Thread Connection, Flush Membrane
Models MDM 7410 MDM 7420 MDM 7450
Applications
Diaphragm seals model series 74.. are used for high pressures and/or aggressive, contaminated or hot media.
Pressure gauges, pressure switches, pressure transmitters and pressure transducers can be mounted.
Important information about advantages, applications and features can be found in our model overview 7000 where you will also find an overview of our other chemical seal series.
Please note especially the explanations about the influences of temperature and other special operating conditions, and the requirement of detailed ordering information resp. inquiries.
Please use our check list for pressure measuring instruments with chemical seal to ensure the completeness of all required ordering information (for download to find at our website, PDF-Download).
You can receive the check list in printed version with mail upon request.
Construction
The diaphragm is flush welded to the body. The complete measuring system is evacuated, completely filled with a suitable filling liquid and hermetically sealed.
Do not open any connection of the system!
Otherwise filling fluid will leak out and the measuring system cannot work properly anymore!
Standard Configurations
Process Connection
MDM 7410: Male thread ?"2) , 3/4", 1", 1?" or 2" BSP
MDM 7420: Male thread ?"2), 3/4"2), 1", 1?" or 2" NPT
MDM 7450: Hexagon union nut 1", 1?", 1?" or 2" BSP,
304 stainless steel (1.4301)
Body
Stainless steel 316 L (1.4435)
Diaphragm
Stainless steel 316 L (1.4435), flush welded to the body
eff. ? diaphragm depends on connection size, see overleaf
Nominal Pressure
PN 600 (10.000 lb/sq.in.), PN 40 for MDM 7450 DN 1?" or 2" BSP
Instrument Connection 1)
?" BSP female resp. ?" BPS-f for certain sizes, see tables overleaf
Filling Liquid
Silicone oil
Pressure Ranges Measuring Instrument
Pressure gauge: dependent on model and size,
minimum pressure range and PN see tables overl
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