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Main Code
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Suffix Codes
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Description
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266MST
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Differential pressure transmitter, base accuracy 0.04 %
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SENSOR - Span Limits
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A
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0.05 and 1 kPa (0.5 and 10 mbar, 0.2 and 4 in. H2O), "Vx" option is required
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C
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0.2 and 6 kPa (2 and 60 mbar, 0.8 and 24 in. H2O)
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F
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0.4 and 40 kPa (4 and 400 mbar, 1.6 and 160 in. H2O)
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L
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2.5 and 250 kPa (25 and 2500 mbar, 10 and 1000 in. H2O)
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N
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20 and 2000 kPa (0.2 and 20 bar, 2.9 and 290 psi)
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R
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100 and 10000 kPa (1 and 100 bar, 14.5 and 1450 psi)
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Maximum Working Pressure
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Y
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1 MPa / 10 bar / 145 psi (Only available with Process Flanges code P)
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W
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Differential measurement at high static pressure
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C
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Gauge measurement
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Z
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25 MPa / 250 bar / 3625 psi (Not available with Sensor Span Limits code A)
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T
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41 MPa / 410 bar / 5945 psi (Not available with Sensor Span Limits code A)
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A
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60 MPa / 600 bar / 8700 psi (Not available with Sensor Span Limits code A, only with process
connection code A)
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Diaphragm Material / Fill Fluid
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S
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AISI 316L SST (1.4435) / Silicone oil (NACE)
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K
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Hastelloy C–276 / Silicone oil (NACE)
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M
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Monel 400 / Silicone oil (NACE)
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V
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Monel 400 gold–plated / Silicone oil (NACE)
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T
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Tantalum / Silicone oil (NACE)
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A
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AISI 316L SST (1.4435) / Inert fluid – Galden (Suitable for oxygen applications) (NACE)
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F
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Hastelloy C–276 / Inert fluid – Galden (Suitable for oxygen applications) (NACE)
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C
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Monel 400 / Inert fluid – Galden (Suitable for oxygen applications) (NACE)
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Y
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Monel 400 gold–plated / Inert fluid – Galden (Suitable for oxygen applications) (NACE)
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D
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Tantalum / Inert fluid – Galden (Suitable for oxygen applications) (NACE)
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Process Flanges and Adapters Material/ Connection
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A
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AISI 316L SST (1.4404 / 1.4408) / 1/4–18 NPT female direct (horizontal connection) (NACE)
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B
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AISI 316L SST (1.4404 / 1.4408) / 1/2–14 NPT female through adapter (horizontal connection)
(NACE)
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C
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AISI 316L SST (1.4404 / 1.4408) / 1/4–18 NPT female direct (DIN 19213) (horizontal
connection) (NACE)
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D
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Hastelloy C–276 / 1/4–18 NPT female direct (horizontal connection) (NACE)
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E
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Hastelloy C–276 / 1/2–14 NPT female through adapter (horizontal connection) (NACE)
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G
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Monel 400 / 1/4–18 NPT female direct (horizontal connection) (NACE)
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H
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Monel 400 / 1/2–14 NPT female through adapter (horizontal connection) (NACE)
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P
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Kynar (PVDF) / 1/4–18 NPT female direct (MWP = 1 MPa) (insert on side of flange)
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Q
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AISI 316L SST (1.4404 / 1.4408) / 1/4–18 NPT female direct (vertical connection) (NACE)
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Bolts Material/ Gaskets Material
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3
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AISI 316 SST (NACE – not exposed to H2S) / Viton (Suitable for oxygen applications) (Max. 41 MPa / 410 bar / 5945 psi)
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4
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AISI 316 SST (NACE – not exposed to H2S) / PTFE (Max. 25 MPa / 250 bar / 3625 psi)
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5
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AISI 316 SST (NACE – not exposed to H2S) / EPDM (Max. 41 MPa / 410 bar / 5945 psi)
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6
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AISI 316 SST (NACE – not exposed to H2S) / Perbunan
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7
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AISI 316 SST (NACE – not exposed to H2S) / Graphite (Max. 41 MPa / 410 bar / 5945 psi)
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T
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AISI 316 SST / FEP (Only available with Kynar [PVDF] process connection)
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Housing Material / Electrical Connection
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A
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Aluminum alloy (Barrel type) / 1/2–14 NPT
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B
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Aluminum alloy (Barrel type) / M20 x 1.5
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E
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Aluminum alloy (Barrel type) / Harting Han connector (General purpose only)
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G
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Aluminum alloy (Barrel type) / Fieldbus connector (General purpose only)
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S
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AISI 316L SST (Barrel type) / 1/2–14 NPT (I2 or I3 required)
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T
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AISI 316L SST (Barrel type) / M20 x 1.5 (I2 or I3 required)
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J
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Aluminum alloy (DIN type) / M20 x 1.5
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K
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Aluminum alloy (DIN type) / Harting Han connector (General purpose only)
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W
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Aluminum alloy (DIN type) / Fieldbus connector (General purpose only)
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Z
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AISI 316L SST (Barrel type) / Fieldbus connector (General purpose only)
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Output
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1
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HART digital communication and 4 to 20 mA
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2
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Profibus PA
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3
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Foundation fieldbus
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8
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HART digital communication and 4 to 20 mA, SIL2 and SIL3 certified to IEC 61508
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Optional Codes
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/Optional codes
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