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

Frequency band: 2.4 GHz DSSS

Update rate: user selectable from 1 sec. to 60 min. 

Integrated adjustable omnidirectional antenna 

– Output radio frequency: maximum 10 mW (10 dBm) EIRP

– Range: up to 300 m. (328 yds.)

Minimum distance between antenna and person is 0.2 m. 

(8 in.)

Telecommunications directive

Every wireless measuring device must be certified in

accordance with the telecommunications directive, in this 

case the frequency range. This certification is countryspecific.

European directives

Radio Equipment & Telecommunications Terminal 

Equipment Directive 2014/53/UE to standards EN 60950-

1:2013,

EN 62311:2008, EN 301 489-1 V1.9.2, EN 301 489-17 V2.2.1, 

EN 300 328 v1.8.1.

In Europe, use of the 2400 - 2483.5 MHz frequency band is 

not harmonized. Country-specific regulations must be 

observed.

Restrictions for Norway

Operation not permitted within a radius of 20 km around

Ny-Alesund in Svalbard. For more information, see

www.npt.no Norway Posts and Telecommunications site

Extra-european radio frequency licences

USA to FCC Part 15.247:2009; 

Canada to IC RSS-210 and ICES-003; 

Argentina; United Arab Emirates (UAE); India; Mexico.

PROFIBUS®

 PA output

Device type

Pressure transmitter compliant to Profiles 3.0.1

Identification number: 3450 (hex)

Power supply

The transmitter operates from 9 to 32 V DC , polarity 

independent, with or without surge protector.

For Ex ia approval power supply must not exceed 17.5 V DC.

Intrinsic safety installation according to FISCO model. 

Current consumption

operating (quiescent): 15 mA

fault current limiting: 20 mA max.

Output signal

Physical layer in compliance to IEC 1158–2/EN 61158–2 

with transmission to Manchester II modulation, at 31.25 

kbit/s.

Output interface

PROFIBUS PA communication according to Profibus 

DP50170 Part 2/DIN 19245 part 1–3. 

Output update time 

25 ms

Data blocks

3 analog input, 1 physical.

Additional blocks

1 Pressure with calibration transducer block

1 Advanced Diagnostics transducer block including 

Plugged Input Line Detection

1 Local Display transducer block

Transmitter failure mode

On gross transmitter failure condition, detected by selfdiagnostics, the output signal can be driven to defined 

conditions, selectable by the user as safe, last valid or 

calculated value. 

If electronic failure or short circuit occur the transmitter 

consumption is electronically limited at a defined value 

(20 mA approx), for safety of the network.

FOUNDATION FieldbusTM output

Device type 

LINK MASTER DEVICE

Link Active Scheduler (LAS) capability implemented.

Manufacturer code: 000320hex

Device type code: 0007hex

Power supply

The transmitter operates from 9 to 32 V DC, polarity 

independent, with or without surge protector.

For Ex ia approval power supply must not exceed 24 V DC 

(FF–816 certification) or 17.5 V DC (FISCO certification).

Current consumption

operating (quiescent): 15 mA

fault current limiting: 20 mA max.

Output signal

Physical layer in compliance to IEC 61158–2/EN 61158–2.

Transmission to Manchester II modulation, at 31.25 kbit/s.

Function blocks/execution period

3 enhanced Analog Input blocks/25 ms max (each)

1 enhanced PID block/40 ms max.

1 standard ARitmetic block/25 ms

1 standard Input Selector block/25 ms

1 standard Control Selector block/25 ms

1 standard Signal Characterization block/25 ms

1 standard Integrator/Totalizer block/25 ms

Additional blocks

1 enhanced Resource block,

1 custom Pressure with calibration transducer block

1 custom Advanced Diagnostics transducer block 

including Plugged Input Line Detection

1 custom Local Display transducer block

Number of link objects

35

Number of VCRs 

35

Output interface

FOUNDATION fieldbus digital communication protocol to 

standard H1, compliant to specification V. 1.7.

Transmitter failure mode

The output signal is “frozen” to the last valid value on 

gross transmitter failure condition, detected by selfdiagnostics which also indicate a BAD conditions. If 

electronic failure or short circuit occur the transmitter 

consumption is electronically limited at a defined value 

(20 mA approx), for safety of the network.

Specification – performance

Stated at reference condition to IEC 60770 ambient 

temperature of 20 °C (68 °F), relative humidity of 65 %, 

atmospheric pressure of 1013 hPa (1013 mbar), mounting 

position with vertical diaphragm and zero based range for 

transmitter with isolating diaphragms in AISI 316 L ss or 

Hastelloy and silicone oil fill and HART digital trim values 

equal to 4 mA and to 20 mA span end points, in linear 

mode. 

Unless otherwise specified, errors are quoted as % of 

span.

Some performance referring to the Upper Range Limit are 

affected by the actual turndown (TD) as ratio between 

Upper Range Limit (URL) and calibrated span.

IT IS RECOMMENDED TO SELECT THE TRANSMITTER 

SENSOR CODE PROVIDING THE TURNDOWN VALUE AS 

LOWEST AS POSSIBLE TO OPTIMIZE PERFORMANCE 

CHARACTERISTICS.

Dynamic performance (according to IEC 61298–1 

definition)

Sensors Total response time