Foundation Fieldbus Pressure Transmitter

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LD292 - Foundation Fieldbus Pressure Transmitter offers digital Foundation Fieldbus based communication simplifying calibration and providing remote diagnostics. Its microprocessor-based electronics allow for total interchangeability with SMAR capacitive sensors, correcting automatically sensor characteristic changes caused by temperature fluctuation.

LD292 - Foundation Fieldbus Pressure Transmitter utilizes the Foundation™ fieldbus H1 protocol, an open technology that allows any H1 enabled configuration tool to configure this device.

Syscon (System Configuration Tool) is a software tool used to configure, maintain and operate the field devices. Syscon offers efficient and friendly interaction with the user, using Windows NT version 4.0 or later, Windows 2000 and Windows XP.

Configuration tools such as AMS™, FieldCare™ and HHT375 can configure LD292 devices. DD (Device Description) and CF (Capability File) files can be downloaded at either the SMAR or Fieldbus Foundation™ website. 

Parameterization and Diagnostics

LD292 - Foundation Fieldbus Pressure Transmitter supports complex strategies configurations due to the high capacity and variety of dynamic instantiable function blocks. Seventeen different types of function blocks are supported, and up to 20 function blocks can be running simultaneously.

Maintenance procedures with AssetView diagnostics and status information from Foundation™ fieldbus result in a safe plant with higher availability.


  • Instantiation and deletion of function blocks;
  • Network master capability;
  • Easy update for HART® and Profibus PA technologies.


Digital only. Complies with IEC 61158-2:2000 (H1): 31.25 kbit/s voltage mode, bus powered.


0 to 25 MPa (3600 psi)


Accepts calibration from URL to URL/40


± 0.075% of calibatred span

Power Supply

Bus powered: 9 to 32 Vdc.
Quiescent current consumption: 12 mA
Output impedance: nonintrinsic safety from 7.8 kHz - 39 kHz should be greater or equal to 3 kOhm.
Intrinsic safety output impedance (assuming an IS barrier in the power supply) from 7.8 kHz - 39 kHz should be greater or equal to 400 Ohm.

Update Output Current

100 ms


Analysis done by Exida


239 years




With reference and without reference

Access Protection

Yes, by hardware


Yes, by LCD


Optional 41/2-digit numerical and 5-character alphanumerical LCD indicator

Only Electronic Board

Only electronic board with math co-processor high-performance, interchangeable on all models.

Update for HART and PROFIBUS PA

These protocols are easily changed by either replacing the
internal electronic board or downloading the firmware. A
FOUNDATION fieldbus  transmitter can be changed into a HART device by replacing the internal card, and vice versa. A Foundation™ fieldbus device can be changed into a PROFIBUS PA device
and vice versa, by simply downloading a new firmware.

Temperature Limits

Ambient: -40 to 85°C (-40 a 185 °F)
Process: -40 to 100°C (-40 a 212 °F) (Silicone Oil)
                0 to 85°C (32 a 185 °F) (Inert Fluorolube Oil)
             -25 to 85 ºC (-13 to 185 ºF) (Viton O´Ring)
Storage: -40 to 100°C (-40 to 212 °F)
Display:  -20 to 80°C (-4 to 176 °F)
             -10 to 60 ºC (14 to 140 ºF) (In Operation)
             -40 to 85°C (-40 to 185 °F) (Without Damages)

Ambient Humidity Limits

0 to 100% RH


Injected low copper aluminum with polyester painting or 316 stainless steel housing. According to the NEMA 4X, IP66.

Wetted Parts

316L SST, Hastelloy C276

Nonwetted Parts

Injected aluminum with polyester painting or 316 SST

Hazardous Area Certification

Intrinsic Safe (FM, CSA, Nemko, Dekra/EXAM, Cepel and NEPSI), non-incendive (FM, CSA and Cepel), explosion proof (FM, Nemko and Cepel) and dust ignition proof (FM).


Less than 2.0 kg (4 lb)

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“Industrial Technical Services is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels”.


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