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

Sensor M to S ≤ 100 ms 

Sensor F to H ≤ 100 ms* 

Total response time for sensor E ≤ 130 ms*, for sensor B ≤ 310 ms*

Total response time includes dead time of 30 ms (for all sensors) with 

time constant @ 63.2 % of total step change.

See “Update Rate” for WirelessHART version.

Accuracy rating (Elin)

% of calibrated span, including combined effects of 

terminal based linearity, hysteresis and repeatability. 

For fieldbus versions SPAN refer to analog input function 

block outscale range

Model Sensor for TD

266DSH F to P from 1:1 to 10:1 ± 0.06 %

F to P from 10:1 to 100:1 ± (0.006 x TD) %

E, Q, S from 1:1 to 10:1 ± 0.075 %

Q and S from 10:1 to 100:1 ± (0.0075 x TD) %

E from 10:1 to 30:1 ± (0.0075 x TD) %

B from 1:1 to 10:1 ± 0.10 %

B from 10:1 to 20:1 ± (0.01 x TD) %

A from 1:1 to 4:1 ± 0.10 %

A from 4:1 to 20:1 ± (0.025 x TD) %

266DSH

(option D2)

F to Q from 1:1 to 5:1 ± 0.04 %

F to P from 5:1 to 100:1 ± (0.0105 + 0.0059 x TD) %

Q from 5:1 to 100:1 ± (0.003 + 0.0074 x TD) %

(*) Availability subject to special request and not applicable 

for explosionproof and flameproof

Ambient temperature (E∆Tz + E∆Ts)

per 20K change between the limits of –40 °C to +85 °C

(per 36 °F change between the limits of –40 to +185 °F): 

Model Sensor for TD up to

266DSH F to Q 10:1 ± (0.03 % URL + 0.045 % span)

E and S 10:1 ± (0.04 % URL + 0.065 % span)

B 10:1 ± (0.06 % URL + 0.10 % span)

A 4:1 ± (0.10 % URL + 0.10 % span)

for an ambient temperature change from –10 °C to +60 °C 

(+14 to +140 °F): 

Model Sensor for TD up to

266DSH F to Q 10:1 ± (0.055 % URL + 0.08 % span)

E and S 10:1 ± (0.075 % URL + 0.11 % span)

B 10:1 ± (0.11 % URL + 0.18 % span)

A 4:1 ± (0.18 % URL + 0.18 % span)

per 10K change between the limits of –40 °C to –10 °C or 

+60° to +85 °C (per 18 °F change between the limits of –40 

to +14 °F or +140° to +185 °F):

Model Sensor for TD up to

266DSH F to Q 10:1 ± (0.03 % URL + 0.04 % span)

E and S 10:1 ± (0.04 % URL + 0.055 % span)

B 10:1 ± (0.055 % URL + 0.09 % span)

A 4:1 ± (0.09 % URL + 0.09 % span)

Static pressure (E∆Ps)

(zero errors can be calibrated out at line pressure) 

per 0.5 MPa, 5 bar or 72.5 psi (sensor A)

per 2 MPa, 20 bar or 290 psi (sensor B)

per 3.5 MPa, 35 bar or 500 psi (sensor E)

per 7 MPa, 70 bar or 1015 psi (sensor F to S)

Model 266DSH standard static

• zero error: ±0.05 % of URL for sensor F to S 

 ±0.08 % of URL for sensor A, B and E

• span error: ±0.08 % of reading.

Model 266DSH flange mounted 

per 2 MPa, 20 bar or 290 psi

• zero error: ±0.05 % of URL for sensor F to P 

 ±0.08 % of URL for sensor E

span error: ±0.08 % of reading.

Supply voltage

Within voltage/load specified limits the total effect is less 

than 0.005 % of URL per volt.

Load

Within load/voltage specified limits the total effect is 

negligible.

Electromagnetic field

Meets all the requirements of EN 61326 for surge 

immunity level (of NAMUR NE 21 on request).

Common mode interference

No effect from 100Vrms @ 50Hz, or 50 V DC

Mounting position

Rotations in the plane of the diaphragm have a negligible 

effect. A tilt from the vertical of up to 90° causes a zero 

point shift of up to 0.5 kPa (5 mbar, 2 inH2O), which can be 

corrected by making an appropriate zero position 

adjustment. There is no effect on the measuring span.

In applications where a dynamic inclined installation is 

required (e.g. naval applications with maximum vessel 

inclination of +/-22.5°), the maximum error can be up to 3 

mbar for 266DSH

Such error might be resulting in a deviation from the 

standard accuracy with percentual magnitude depending 

on the range of the selected device.

In case of non-dynamic inclined installations, this effect 

can be eliminated by performing a zero calibration in the 

field.

Please contact ABB to assess more in details on the 

installation effects

Stability

±0.15 % of URL over a ten years period

(±0.25 % of URL over a ten years period for sensor A or B)

Maximum total performance 

For temperature change of 28 °C (50 °F), static pressure 

change of 5,1 MPa, 51 bar, 740 psi, for model 266DSH with 

accuracy option code D2 (± 0.04 %)

Sensor Span Maximum total performance

F 35 kPa, 350 mbar, 140 inH2O ≤± 0.125 % of calibrated span

H 150 kPa, 1,5 bar, 600 inH2O

M 550 kPa, 5,5 bar, 80 psi

EMperf = √ (E∆Tz + E∆Ts)2

 + E∆Ps 2

 + Elin 2

EMperf = Maximum total performance

E∆Tz = Effect of the ambient temperature on zero

E∆Ts = Effect of the ambient temperature on span

E∆Ps = Effect of the static pressure on span

Elin = Accuracy rating (for terminal-based linearity 0.04 %)

Total performance 

similar to DIN 16086

Temperature change in the range from –10 to 60 °C (14 to 140 °F), 

static pressure change (266DSH) 10 MPa, 100 bar, 1450 psi

Model Sensor TD Total performance

266DSH std. static, D2 option F to Q 1:1 ≤± 0.16 % of calibrated span

Eperf = √ (E∆Tz + E∆Ts)2

 + E∆Ps 2

 + Elin 2

Eperf = Total Performance

E∆Tz = Effect of the ambient temperature on zero

E∆Ts = Effect of the ambient temperature on span

E∆Ps = Effect of the static pressure on span

Elin = Accuracy rating (for terminal-based linearity 0.04 %