LD291

HART Pressure Transmitter

The model LD291 - HART® Pressure Transmitter offers digital HART based communication simplifying calibration and providing remote diagnostics. Its microprocessor-based electronics allow for total interchangeability with SMAR capacitive sensor. It automatically corrects sensor characteristic changes caused by temperature fluctuations.
 

Some Characteristics:

OutputTwo-wire, 4-20 mA with HART superimposed digital communication signal.
Power Supply12-45 Vdc
RangeCapacitive: 0 a 25 MPa (3600 psi)
Piezo Resistive: 0 a 70 MPa (10150 psi)
RangeabilityAccepts calibration from URL to URL/40
Accuracy± 0.075% of calibatred span
Update Output Current100ms
FMEDAAnalysis done by Exida
MTBF239 years
SILYes
CalibrationWith reference and without reference.
Access ProtectionYes, by hardware.
DiagnosticYes, by LCD.
IndicatorOptional 41/2-digit numerical and 5-character alphanumerical LCD indicator.
Only Eletric BoardOnly electronic board with math co-processor high-performance, interchangeable on all models.
Update for FOUNDATION fieldbus and PROFIBUS PAWith the simple exchange of the main electronic board can be easily converted to these digital protocols.
Ambient Temperature LimitsAmbient:
- 40 a 85°C (-40 a 185 °F)

Process:
- 40 a 100°C (-40 a 212 °F) (Silicone Oil)
- 0 a 85°C (32 a 185 °F) (Fluorolube Oil)
-25 a 85 ºC (-13 a 185 º F) (Anéis de Vedaçao em Viton)

Stocking:
- 40 a 100°C (-40 a 212 °F)

Display: 
- 10 a 60 ºC (14 a 140 º F) (In operation)
- 20 a 80°C (-4 a 176 °F)
- 40 a 85°C (-40 a 185 °F) (No damaged)
Ambient Humidity Limits0 a 100% RH
Diaphragms Insulators and Process Connection

Aço Inox 316L ou Hastelloy C276
 

316L SST or Hastelloy C276 Diaphragm available Sanitary model also Monel 400 and Tantalum.

HousingInjected low copper aluminum with polyester painting or 316 stainless steel housing. According to the NEMA 4X, IP66.
Hazardous Area CertificationIntrinsic 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).
WeightLess than 2.0 kg (4 lb)

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