1. General Introduction
ABB 266DRH differential pressure transmitter combines with S26 direct or remote seal for differential pressure measurement, measure range from -4Kpa to 16Mpa, maximum static pressure is up to 42Mpa and maximum turn down ratio up to 60:1, standard accuracy is 0.06%, meets SIL2,SIL3 safety applications as per IEC 61508 standard.
Depending on actual application, 266DRH allows a differential measurement using either two remote seals of same type and size or one direct mount seal on positive side and one remote seal on negative side, of same type and size or one remote seal on positive and a standard threaded connection direct 1,4 in. – 18 NPT on flange or 1,2 in. – 14 NPT through adapter, for the wet or dry leg on negative side opposite to seal, or one direct mount seal on positive side and a standard threaded connection direct 1,4 in. – 18 NPT on flange or 1,2 in. – 14 NPT through adapter, for the wet or dry leg on negative side.
The S26 Series Seal System is a protective device used to isolate 266DRH 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 | Proof Pressure |
B | -4Kpa, -40mbar, -16inH2O | 4Kpa, 40mbar, 16inH2O | 5:1 | 20:1 | 14Mpa, 140bar, 2030psi |
E | -16Kpa, -160mbar, -64inH2O | 16Kpa, 160mbar, 64inH2O | 5:1 | 20:1 | 31.5Mpa, 315bar, 4567psi |
F | -40Kpa, -400mbar, -160inH2O | 40Kpa, 400mbar, 160inH2O | 10:1 | 60:1 | 40.25Mpa, 402.5bar, 5836psi |
H | -160Kpa, -1600mbar, -642inH2O | 160Kpa, 1600mbar, 642inH2O | 10:1 | 60:1 | 40.25Mpa, 402.5bar, 5836psi |
M | -600Kpa, -6bar, -87psi | 600Kpa, 6bar, 87psi | 10:1 | 60:1 | 40.25Mpa, 402.5bar, 5836psi |
P | -2400Kpa, -24bar, -348psi | 2400Kpa, 24bar, 348psi | 10:1 | 60:1 | 40.25Mpa, 402.5bar, 5836psi |
Q | -8000Kpa, -80bar, -1160psi | 8000Kpa, 80bar, 1160psi | 10:1 | 60:1 | 40.25Mpa, 402.5bar, 5836psi |
S | -16000Kpa, -160bar, -2320psi | 16000Kpa, 160bar, 2320psi | 10:1 | 60:1 | 40.25Mpa, 402.5bar, 5836psi |
3.Basic Code Selection of 266DRH Differential Pressure Transmitter
Main Code | Suffix Codes | Description | ||||||
266DRH | Differential Pressure Transmitter with remote seal– BASE ACCURACY 0.06% | |||||||
SENSOR - Span limits | B | 0.2 and 4kpa,2 and 40mbar,0.8 and 16inH2o | ||||||
E | 0.8 and 16kpa,8 and 160mbar,3.2 and 64inH2o | |||||||
F | 0.67 and 40kpa,6.7 and 400mbar,2.67 and 160inH2o | |||||||
H | 2.67 and 160kpa,26.7 and 1600mbar,10.7 and 642inH2o | |||||||
M | 10 and 600kpa,0.1 and 6bar,1.45 and 87psi | |||||||
P | 40 and 2400kpa,0.4 and 24bar,5.8 and 348psi | |||||||
Q | 134 and 8000kpa,1.34 and 80bar,19.4 and 1160psi | |||||||
S | 267 and 16000kpa,2.67 and 160bar,38.7 and 2320psi | |||||||
Application | S | Differential measurement at standard static pressure | ||||||
H | Differential measurement at high static pressure | |||||||
P | Gauge measurement | |||||||
Diaphragm material , Fill fluid (wetted parts) | S | ANSI 316L SS, Silicone oil, NACE(for one seal) | ||||||
K | Hastelloy C276, Silicone oil, NACE(for one seal) | |||||||
M | Monel 400, Silicone oil, NACE(for one seal) | |||||||
T | Tantalum , Silicone oil, NACE(for one seal) | |||||||
A | ANSI 316L SS, Inert fluid - Galden, NACE(for one seal) | |||||||
F | Hastelloy C276, Inert fluid - Galden, NACE(for one seal) | |||||||
C | Monel 400, Inert fluid - Galden, NACE(for one seal) | |||||||
D | Tantalum , Inert fluid - Galden, NACE(for one seal) | |||||||
L | ANSI 316L SS, Inert fluid - Halocarbon, NACE(for one seal) | |||||||
P | Hastelloy C276, Inert fluid - Halocarbon, NACE(for one seal) | |||||||
4 | Monel 400, Inert fluid - Halocarbon, NACE(for one seal) | |||||||
5 | Tantalum , Inert fluid - Halocarbon, NACE(for one seal) | |||||||
R | ANSI 316L SS, Silicone oil, NACE(for 2 seals) | |||||||
2 | ANSI 316L SS, Inert fluid - Galden, NACE(for 2 seals) | |||||||
W | ANSI 316L SS, Inert fluid - Halocarbon, NACE(for 2 seals) | |||||||
Process flanges, adapters material and connection (wetted parts) | R | ANSI 316L SS for two seals construction, NACE | ||||||
A | ANSI 316L SS horizontal connection, 1/4"-18NPT direct, NACE | |||||||
B | ANSI 316L SS horizontal connection, 1/2"-14NPT trough adaptor, NACE | |||||||
D | Hastelloy C276 horizontal connection, 1/4"-18NPT direct, NACE | |||||||
E | Hastelloy C276 horizontal connection, 1/2"-14NPT trough adaptor, NACE | |||||||
G | Monel 400 horizontal connection, 1/4"-18NPT direct, NACE | |||||||
H | Monel 400 horizontal connection, 1/2"-14NPT trough adaptor, NACE | |||||||
Bolts/Gasket (wetted parts) | R | ANSI 316 SS for standard static without gasket for 2 seas construction(MWP=16Mpa), NACE | ||||||
R | SS for standard high without gasket for 2 seas construction(MWP=42Mpa), NACE | |||||||
S | ANSI 316 SS without gasket for 2 seas construction, NACE | |||||||
1 | ANSI 316 SS, Viton, NACE | |||||||
2 | ANSI 316 SS, PTFE, NACE | |||||||
3 | ANSI 316 SS(MWP=16Mpa), Viton, NACE | |||||||
4 | ANSI 316 SS(MWP=16Mpa), PTFE, NACE | |||||||
Housing material and electrical connection | A | Aluminum alloy ( barrel version), 1/2"-14NPT | ||||||
B | Aluminum alloy ( barrel version), M20*1.5 | |||||||
S | ANSI 316 SS ( barrel version), 1/2"-14NPT | |||||||
T | ANSI 316 SS ( barrel version), M20*1.5 | |||||||
J | Aluminum alloy ( DIN version) | |||||||
Output/Additional options | 7 | Hart 4-20mA, Standard function | ||||||
1 | Hart 4-20mA, Advanced function | |||||||
2 | Profibus PA | |||||||
3 | Foundation fieldbus | |||||||
8 | Hart 4-20mA, certified to IEC61058 | |||||||
9 | Wireless Hart | |||||||
Optional codes | /Optional codes |
4.Basic Code Selection of S26RA Rotating Flange Diaphragm Seals (Flush and Extended) to ASME B16.5
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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