1.General Introduction
ABB 266MRT differential pressure transmitter combines with S26 direct or remote seal for differential pressure measurement, measure range from -10Mpa to 10Mpa, maximum static pressure is up to 41Mpa and maximum turn down ratio up to 60:1, standard accuracy is 0.04%, meets SIL2,SIL3 safety applications as per IEC 61508 standard.
Depending on actual application, 266DRH allows a differential measurement using either two diaphragm seals of the same type and size or with
one diaphragm seal (on the high pressure (H) or low pressure (L) side) plus a standard process flange with threaded connection. In this case, the threaded connection (1/4 – 18 NPT or 1/2 – 14 NPT using adapter) is for the liquid or dry leg on the side opposite the diaphragm seal.
The S26 Series Seal System is a protective device used to isolate 266MRH differential pressure transmitter from the process fluid, provides a flexible diaphragm seal between the process fluid and a liquid filled capillary tube connected to the body of the transmitter. The diaphragm isolates the process fluid while the filled capillary tube hydraulically transmits the process pressure to the transmitter sensor. The capillary of remote seal is corrosion-resistant with robust construction in stainless steel with spiral armor protection, also PVC jacket; PVC protection is always recommended except for high temperature application, where stainless steel armor is suggested. The all welded construction assures reliable operation over the widest range of operating temperature and under vacuum conditions.
2.Measuring Span & Range Limits
Sensor Code | Lower Range Limit (LRL) | Upper Range Limit (URL) | Standard TD Ratio | Max. TD Ratio | Max. Static Pressure |
C | -6Kpa, -60mbar, -24inH2O | 6Kpa, 60mbar, 24inH2O | 5:1 | 10:1 | 41Mpa, 410bar, 5945psi |
F | -40Kpa, -400mbar, -160inH2O | 40Kpa, 400mbar, 160inH2O | 10:1 | 60:1 | 41Mpa, 410bar, 5945psi |
L | -250Kpa, -2500mbar, -1000inH2O | 250Kpa, 2500mbar, 1000inH2O | 10:1 | 60:1 | 41Mpa, 410bar, 5945psi |
N | -2000Kpa, -20bar, -290psi | 2000Kpa, 20bar, 290psi | 10:1 | 60:1 | 41Mpa, 410bar, 5945psi |
R | -10000Kpa, -100bar, -1450psi | 10000Kpa, 100bar, 1450psi | 10:1 | 60:1 | 41Mpa, 410bar, 5945psi |
3.Basic Code Selection of 266MRT Differential Pressure Transmitter
Main Code | Suffix Codes | Description | ||||||
266MRT | Differential pressure transmitter with remote seal(s), base accuracy 0.04 % | |||||||
SENSOR - Span Limits | C | 0.6 and 6 kPa 6 and 60 mbar 2.41 and 24 in. H2O | ||||||
F | 0.67 and 40 kPa 6.7 and 400 mbar 2.67 and 160 in. H2O | |||||||
L | 4.17 and 250 kPa 41.7 and 2500 mbar 16.7 and 1000 in. H2O | |||||||
N | 33.3 and 2000 kPa 0.333 and 20 bar 4.83 and 290 psi | |||||||
R | 167 and 10000 kPa 1.67 and 100 bar 24.2 and 1450 psi | |||||||
Maximum Working Pressure | C | 16 MPa 160 bar 2320 psi | ||||||
Z | 25 MPa 250 bar 3625 psi | |||||||
T | 41 MPa 410 bar 5945 psi | |||||||
Diaphragm Material / Fill Fluid | S | AISI 316L SST (1.4435) Silicone oil NACE | ||||||
K | Hastelloy® C-276 Silicone oil NACE | |||||||
M | Monel 400® Silicone oil NACE | |||||||
V | AISI 316 L ss gold plated Silicone oil NACE | |||||||
T | Tantalum Silicone oil NACE | |||||||
A | AISI 316L SST (1.4435) Inert fluid – Galden (Suitable for oxygen applications) NACE | |||||||
F | Hastelloy® C-276 Inert fluid – Galden (Suitable for oxygen applications) NACE | |||||||
C | Monel 400® gold-plated Inert fluid – Galden (Suitable for oxygen applications) NACE | |||||||
Y | AISI 316 L ss gold plated Inert fluid – Galden (Suitable for oxygen applications) NACE | |||||||
D | Tantalum Inert fluid – Galden (Suitable for oxygen applications) NACE | |||||||
R | Diaphragm seal Silicone oil (Seal to be quoted separately) | |||||||
2 | Diaphragm seal Inert fluid – Galden (Seal to be quoted separately) | |||||||
Diaphragm Material / Fill Fluid | A | AISI 316L SST (1.4404 / 1.4408) 1/4-18 NPT female direct (horizontal connection) NACE | ||||||
B | AISI 316L SST (1.4404 / 1.4408) 1/2-14 NPT female through adapter (horizontal connection) NACE | |||||||
C | AISI 316L SST (1.4404 / 1.4408) 1/4-18 NPT female direct (DIN 19213) (horizontal connection) NACE | |||||||
D | Hastelloy® C-276 1/4-18 NPT female direct (horizontal connection) NACE | |||||||
E | Hastelloy® C-276 1/2-14 NPT female through adapter (horizontal connection) NACE | |||||||
G | Monel 400® 1/4-18 NPT female direct (horizontal connection) NACE | |||||||
H | Monel 400® 1/2-14 NPT female through adapter (horizontal connection) NACE | |||||||
R | AISI 316L SST (1.4404 / 1.4408) For two seals construction NACE | |||||||
Bolts Material / Gaskets Material | 3 | AISI 316L SST (NACE - non exposed to H2S) / Viton (Suitable for oxygen applications) | ||||||
4 | AISI 316L SST (NACE - non exposed to H2S) / PTFE (Max. 25 MPa / 250 bar / 3625 psi) | |||||||
5 | AISI 316L SST (NACE - non exposed to H2S) / EPDM | |||||||
6 | AISI 316L SST (NACE - non exposed to H2S) / Perbunan | |||||||
7 | AISI 316L SST (NACE - non exposed to H2S) / Graphite | |||||||
R | AISI 316L SST (NACE - non exposed to H2S) / Without gaskets (For two seals construction) | |||||||
Housing Material and Electrical Connection | A | Aluminum alloy ( barrel type), 1/2"-14NPT | ||||||
B | Aluminum alloy ( barrel type), M20*1.5 | |||||||
E | Aluminium alloy (Barrel type) Harting Han connector (General purpose only | |||||||
G | Aluminium alloy (Barrel type) (General purpose only) | |||||||
S | AISI 316L SST (Barrel type) | |||||||
T | AISI 316L SST (Barrel type) | |||||||
J | Aluminium alloy (DIN type) | |||||||
K | Aluminium alloy (DIN type) (General purpose only) | |||||||
W | Aluminium alloy (DIN type) (General purpose only) | |||||||
Z | AISI 316L SST (Barrel type) (General purpose only) | |||||||
1 | HART digital communication and 4 … 20 mA | |||||||
2 | Profibus PA | |||||||
3 | Foundation fieldbus | |||||||
8 | HART digital communication and 4 … 20 mA, SIL2 and SIL3-certified in acc. with IEC 61508 | |||||||
Optional Codes | /Optional codes |
4.Basic Code Selection of S26RA Rotating Flange Diaphragm Seals (flush and extended) to ASME B16.5
Main Code | Suffix Codes | Description | |||||||||||
S26RA | Rotating flange diaphragm seal (Raised face flush and extended) to ASME B16.5 | ||||||||||||
Transmitter Side of Connection | H | High pressure side | |||||||||||
L | Low pressure side | ||||||||||||
Mounting Flange Rating / Size | E1 | ASME CL150, 2 inch | |||||||||||
E2 | ASME CL300, 2 inch | ||||||||||||
E3 | ASME CL600, 2 inch | ||||||||||||
E5 | ASME CL900-1500, 2 inch | ||||||||||||
G1 | ASME CL150, 3 inch | ||||||||||||
G2 | ASME CL300, 3 inch | ||||||||||||
G3 | ASME CL600, 3 inch | ||||||||||||
G4 | ASME CL900, 3 inch | ||||||||||||
G5 | ASME CL1500, 3 inch | ||||||||||||
H1 | ASME CL150, 4 inch | ||||||||||||
H2 | ASME CL300, 4 inch | ||||||||||||
Mounting Flange Material | C | Carbon steel | |||||||||||
S | ANSI 316 SS | ||||||||||||
Extensions Length and Material | F | Flush | |||||||||||
1 | 50mm, 2 inch, ANSI 316L SS | ||||||||||||
2 | 50mm, 2 inch, Hastelloy C276 | ||||||||||||
3 | 100mm, 4 inch, ANSI 316L SS | ||||||||||||
4 | 100mm, 4 inch, Hastelloy C276 | ||||||||||||
5 | 150mm, 6 inch, ANSI 316L SS | ||||||||||||
6 | 150mm, 6 inch, Hastelloy C276 | ||||||||||||
Diaphragm Material | SM | ANSI 316 SS, NACE | |||||||||||
SL | ANSI 316 SS, low thickness, NACE | ||||||||||||
HM | Hastelloy C276, NACE | ||||||||||||
HL | Hastelloy C276, low thickness, NACE | ||||||||||||
MM | Hastelloy C2000, NACE | ||||||||||||
ZM | Hastelloy C2000, diaphragm and body, NACE | ||||||||||||
LM | Inconel 625, NACE | ||||||||||||
TM | Tantalum | ||||||||||||
NM | ANSI 316 SS gold plated, NACE | ||||||||||||
KM | ANSI 316 SS with PFA anti-stick coating, NACE | ||||||||||||
YM | Hastelloy C276 with PFA anti-stick coating, NACE | ||||||||||||
WM | ANSI 316 SS with PFA coating anti-corrosion and anti-stick, NACE | ||||||||||||
FW | Diaflex (AISI with anti-abrasion treatment), NACE | ||||||||||||
EM | Superduplex SS(UNS S32750 to ASTM SA479), NACE | ||||||||||||
GM | Monel | ||||||||||||
Seal Surface Finish | 1 | Serrated | |||||||||||
2 | Smooth | ||||||||||||
Capillary Protection | A | ANSI 316L SS armor | |||||||||||
B | ANSI 316L SS armor with PVC protective cover | ||||||||||||
N | Extension tube for direct mount seal | ||||||||||||
Capillary Length m (Feet) | 1 | Direct-mount construction | |||||||||||
A | 1m, 3 feet | ||||||||||||
B | 1.5m, 5 feet | ||||||||||||
C | 2m, 7 feet | ||||||||||||
D | 2.5m, 8 feet | ||||||||||||
E | 3m, 10 feet | ||||||||||||
F | 3.5m, 12 feet | ||||||||||||
G | 4m, 13 feet | ||||||||||||
H | 4.5m, 15 feet | ||||||||||||
J | 5m, 17 feet | ||||||||||||
K | 5.5m, 18 feet | ||||||||||||
L | 6m, 20 feet | ||||||||||||
M | 6.5m, 22 feet | ||||||||||||
N | 7m, 23.5 feet | ||||||||||||
P | 7.5m, 25 feet | ||||||||||||
Q | 8m, 27 feet | ||||||||||||
R | 9m, 30 feet | ||||||||||||
S | 10m, 33 feet | ||||||||||||
T | 12m, 40 feet | ||||||||||||
U | 14m, 47 feet | ||||||||||||
V | 16m, 53 feet | ||||||||||||
Fill Fluid | S | Silicon oil PMX 200 10 cst (-40 to 250℃, -40 to 480℉) | |||||||||||
P | Silicon oil Baysilone PD5 5 cst (-85 to 250℃, -121 to 480℉) | ||||||||||||
N | Inert oil Galden G5, oxygen service | ||||||||||||
D | Inert oil Halocarbon 4.2 oxygen service | ||||||||||||
G | Silicon oil for high temperature (-10 to 375℃, 14 to 707℉) | ||||||||||||
C | Silicon polymer syltherm XLT (-100 to 100℃, -148 to 212℉) | ||||||||||||
W | Mineral oil Esso Marcol 152 (FDA approved) | ||||||||||||
A | Vegetable oil Neobee M-20 (FDA approved) | ||||||||||||
B | Glycerin water 70% (FDA approved) | ||||||||||||
Flushing Ring: Hole and Thread | N | None | |||||||||||
2 | 1 hole, 1/2 inch NPT | ||||||||||||
3 | 2 holes, 1/2 inch NPT | ||||||||||||
4 | 1 hole, 1/4 inch NPT | ||||||||||||
5 | 2 holes, 1/4 inch NPT | ||||||||||||
Flushing Ring Material | N | None | |||||||||||
A | ANSI 316L SS | ||||||||||||
H | Hastelloy C276 | ||||||||||||
Flushing Ring: Plug and Gasket | N | No plug, no gasket | |||||||||||
A | No plug, no garlock | ||||||||||||
B | No plug, PTFE | ||||||||||||
C | No plug, graphite | ||||||||||||
D | ANSI 316L SS, no gasket | ||||||||||||
E | ANSI 316L SS, no garlock | ||||||||||||
F | ANSI 316L SS, PTFE | ||||||||||||
G | ANSI 316L SS, graphite | ||||||||||||
H | Hastelloy C276 SS, no gasket | ||||||||||||
L | Hastelloy C276 SS, no garlock | ||||||||||||
M | Hastelloy C276 SS, PTFE | ||||||||||||
P | Hastelloy C276 SS, graphite | ||||||||||||
Optional Codes | /Optional codes |
5.Typical Mounting & Dimensions for Barrel Housing for Pipe Mounting
6.Typical Mounting & Dimensions for S26RA Rotating Flange Diaphragm Seals (flush and extended)
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