ABB MEASUREMENT & ANALY TICS | DATA SHEET 266DSH Differential pressure transmitters

EN 1092-1 PN 16 1.3 kPa abs, 13 mbar abs, 0.2 psia and 13.5 bar

EN 1092-1 PN 40 1.3 kPa abs, 13 mbar abs, 0.2 psia and 33.8 bar

The pressure limit decreases with increasing temperature above 100°F 

(38°C), according to ASME B16.5 standards or above 50°C according to 

EN 1092-1 standards.

Proof pressure

The transmitter with threaded process connection can be 

exposed without leaking to line pressure of up to 

• 48 MPa, 480 bar, 6960 psi for standard static version

• up to two times the flange rating for the flange 

mounted version. 

Meet ANSI/ISA-S 82.03 hydrostatic test requirements.

Temperature limits °C ( °F) 

Ambient

is the operating temperature

Models 266DSH Ambient temperature limits

Silicone oil for sensor F to S –40 and 85 °C (–40 and 185 °F)

Silicone oil for sensor A to E –40 and 85 °C (–40 and 185 °F)*

Inert (Galden) for sensor F to S –20 and 85 °C (–4 and 185 °F)

Inert (Galden) for sensor E –10 and 85 °C (14 and 185 °F)

Models 266DSH Ambient temperature limits

LCD integral display –40 and 85 °C (–40 and 185 °F)

LCD display may be affected in visibility below -20°C (-4°F) or above +70°C 

(+185°F).

Transmitters with ambient temperature limit of -50°C (-58° F) are available 

through special option.

This special option is not compatible with communication protocol option 

“7”

IMPORTANT

For Hazardous Atmosphere applications see the 

temperature range specified on the certificate/approval 

relevant to the aimed type of protection

Process

Models 266DSH Process temperature limits

Silicone oil for sensor F to S –40 and 121 °C (–40 and 250 °F) *

Silicone oil for sensor A to E –25 and 121 °C (–13 and 250 °F) *

Inert (Galden) for sensor F to S –20 and 100 °C (–4 and 212 °F) **

Inert (Galden) for sensor E –10 and 100 °C (14 and 212 °F) **

* 100 °C (212 °F) for application below atmospheric pressure

** 65 °C (150 °F) for application below atmospheric pressure

Models 266DSH Process temperature limits

Viton gasket –20 and 121 °C (–4 and 250 °F)

Storage

Models 266DSH Storage temperature limits

Storage limits –50 and 85 °C (–58 and 185 °F)

LCD integral display –40 and 85 °C (–40 and 185 °F)

* between -40°C (-40° F) and -25°C (-13° F) device response 

time might be influenced

Environmental limits

Electromagnetic compatibility (EMC)

Comply with 2014/30/UE to standards EN 61326-1:2013. 

For IEC 61508 SIL certified transmitter to 

EN 61326-3-1:2008.

For transmitter with option “YE” to NAMUR NE 021 (2004).

Surge immunity level (with surge protector): 4 kV

(according to IEC 61000-4–5 EN 61000–4–5)

Pressure equipment directive (PED)

Comply with 2014/68/UE to standards 

ANSI/ISA 61010-1:2012

Category III Module H for PS ≥ than 20 MPa, 200 bar 

Sound Engineering Practice (SEP) for PS < 20 MPa, 200 bar

Humidity

Relative humidity: up to 100 % 

Condensing, icing: admissible

Vibration resistance

Accelerations up to 2 g at frequency up to 1000 Hz

(according to IEC 60068–2–6)

Shock resistance

Acceleration: 50 g

Duration: 11 ms

(according to IEC 60068–2–27)

Wet and dust-laden atmospheres

The transmitter is dust and sand tight and protected 

against immersion effects as defined by IEC 60529 (2001) 

to IP 67 (IP 68 on request) or by NEMA Type 4X.

IP65 with Harting Han connector.

Aluminium and AISI housings as barrel version also comply 

to IP 66 as defined by IEC 60529 (2001).

IP66W/IP67W/IP68W as standard for Inmetro certification.

...Specification – operative limits

Hazardous atmospheres

(FOR ALL VERSIONS EXCEPT WirelessHART)

With or without integral display

INTRINSIC SAFETY Ex ia:

• ATEX Europe (code E1) approval

II 1 G Ex ia IIC T6...T4 Ga, II 1/2 G Ex ia IIC T6...T4 Ga/Gb,

II 1 D Ex ia IIIC T85 °C Da, II 1/2 D Ex ia IIIC T85 °C Da; 

IP66, IP67.

• IECEx (code E8) approval

Ex ia IIC T6...T4 Ga/Gb, Ex ia IIIC T85 °C Da; IP66, IP67.

• NEPSI China (code EY)

Ex ia IIC T4/T5/T6 Ga, Ex ia IIC T4/T5/T6 Ga/Gb, 

Ex iaD 20 T85/T100/T135, Ex iaD 20/21 T85/T100/T135.

EXPLOSION PROOF:

• ATEX Europe (code E2) approval

II 1/2 G Ex db IIC T6 Ga/Gb Ta=–50 °C to +75 °C, 

II 1/2 D Ex tb IIIC T85 °C Db Ta = –50 °C to +75 °C; 

IP66, IP67.

• IECEx (code E9) approval

Ex db IIC T6 Ga/Gb Ta=–50 °C to +75 °C,

Ex tb IIIC T85 °C Db Ta = –50 °C to +75 °C; IP66, IP67.

• NEPSI China (code EZ)

Ex d IIC T6 Gb, Ex tD A21 IP67 T85 °C.

INTRINSIC SAFETY Ex ic:

• ATEX Europe (code E3 ) type examination

II 3 G Ex ic IIC T6...T4 Gc,

II 3 D Ex tc IIIC T85 °C Dc; IP66, IP67.

• IECEx (code ER) type examination

Ex ic IIC T6...T4 Gc, Ex tc IIIC T85 °C Dc; IP66, IP67.

• NEPSI China (code ES) type examination

Ex ic IIC T4~T6 Gc, Ex nA IIC T4~T6 Gc, 

Ex tD A22 IP67 T85 °C.

FM Approvals US (code E6) and 

FM Approvals Canada (code E4):

• Explosionproof (US): Class I, Division 1, 

Groups A, B, C, D; T5

• Explosionproof (Canada): Class I, Division 1, 

Groups B, C, D; T5

• Dust-ignitionproof: Class II, Division 1, Groups E, F, G; 

Class III, Div. 1; T5

• Flameproof (US): Class I, Zone 1 AEx d IIC T4 Gb

• Flameproof (Canada): Class I, Zone 1 Ex d IIC T4 Gb

• Nonincendive: Class I, Division 2, Groups A, B, C, D T6...T4

• Energy limited (US): Class I, Zone 2 AEx nC IIC T6...T4