ABB Differential Pressure Transmitter 266DDHHSSA2BHL1+S26RAHG1S1SM1N1SNN

This transmitter can be configured with a direct mount diaphragm seal and a standard pressure connection or combined with a remote diaphragm seal. In order to show its flexibility, the 266DDH can be transformed into a gauge pressure transmitter by mean of a dedicated gauge filter for atmosphere reference.
Exploit ABB unrivalled leadership in diaphragm seals design and manufacturing:

• no thread joints or gaskets that is prone to fail or drift in time
•  less fill volume to achive better temperature effects

In addition to the plug-in terminal block, this transmitter features in-field replaceable electronics module that thanks to the auto-configuration functionality dramatically improves plant productivity. Its intuitive plug-and-play display with easy setup procedure really helps users by saving time and lowering maintenance and inventory costs. Moreover, the innovative TTG (Through The Glass) technology allow users to configure the instruments in the field without removing the windowed front cover and consequently to save a lot of time.

SIL2/SIL3 certification issued by TÜV Nord according to IEC 61508 represents another key-feature within 266 pressure transmitter portfolio. This certification is a real guarantee of protection and makes of 266DDH the smartest fit in Safety-critical loops. 266DDH features WirelessHART communication protocol allowing a shorter installation times by eliminating complex wired infrastructures, and lower overall implementation costs of process measurement.2 66DDH battery life is about 10 years at 32 sec. update rates, delivering a very cost effective and reliable solution to monitor your process assets.

– Base accuracy : ±0.06%
– Span limits: 0.05 to 16000kPa; 0.2 … 2320 psi
– Multiple protocol availability – provides integration with HART®, PROFIBUS PA, FOUNDATION Fieldbus and WirelessHART platforms offering interchangeability and transmitter upgrade capabilities
– Full compliance with PED Category III

Trasmitter Datasheet

Diaphragm Datasheet

Transmitter Feature  

• Manufacturer : ABB
• Product No. : 266DDHHSSA2BHL1
• Model : 266DDH - Differential Pressure Transmitter – BASE ACCURACY 0.06 %
• SENSOR - Span limits : H - 2.67 and 160 kPa  / 26.7 and 1600 mbar  / 10.7 and 642 inH2O  
• Use code - 8th character: S - Use code 
• Diaphragm material / Fill fluid: S -  AISI 316 L ss  / Silicone oil / (one direct mount seal only to be quoted)
• Process flanges/adapters material and connection : A - AISI 316 L ss (Horizontal connection) 1/4 – 18 NPT-f direct
• Bolts/Gasket (wetted parts): 2 - AISI 316 ss  / PTFE / (Notes 1, 3)
• Housing material and electrical connection: B - Aluminium alloy ( barrel version) M20 x 1.5 (CM 20)
• Output/Additional options: H - HART digital communication and 4 to 20 mA
• Integral LCD: L1 -Digital LCD integral display

Diaphragm Feature

• Manufacturer : ABB
• Product No. : S26RAHG1S1SM1N1SNN
• BASE MODEL :S26RA - Rotating flange diaphragm seal (flush) Ring Joint to ASME B16.5
• Transmitter Side of Connection : H - High pressure side
• Mounting Flange Rating / Size: G1 -  ASME CL 150 / 3 in.
• Mounting Flange Material: S - AISI 316 ss
• Extensions Length and Material: 1 - 50 mm (2 in.) AISI 316 L ss (Note 1)
• Diaphragm Material: SM - AISI 316 L ss (Note 2)
• Seal Surface Finish: 1 - Serrated (Note 4)
• Capillary Protection: N- Extension tube for direct mount seal (Note 5)
• Capillary Length m (Feet): 1 - Direct-mount construction (Note 6)
• Fill Fluid: S - Silicone oil PMX 200 10 cSt (-40 to 250 °C; -40 to 480 °F)
• Flushing Ring: Hole and Thread: N - None (TO BE SELECTED FOR EXTENDED VERSIONS)
• Flushing Ring Material: N - None (Note 10)

Basic Ordering Information Transmitter

There are several Model of pressure transmitters, for more details read the PDF below 

Basic Ordering Information

Electrical connections 

Rotating flange diaphragm seals – flush and extended (S26RA, S26RE, S26RH and S26RJ

The extended and flush diaphragm remote seal is designed to connect to flanged pipe fitting, according to ASME B16.5 (S26RA), EN 1092-1 (S26RE), JIS B 2220 standards (S26RJ) or ISO 10423 (S26RH). For liquid level measurement installations the seal connects to a flanged tank nozzle, compliant to the relevant standard. The sealing is provided by a selectable smooth or serrated gasket seat surface finish. The mounting flange is of rotating type and can be supplied on carbon steel or in stainless steel AISI 316

Figure 2: Flush rotating-flange seals (flushing ring as an option)

Figure 3: Extended rotating-flange seals

Figure 4: Flush rotating-fange (API) ring-joint construction