SMAR LD290 - Pressure Transmitter 4 to 20 mA Microprocessor Based


»	LD290 - English Catalogue - 7/14/2010
	(pdf - 3.96 MB)

»	LD290 - 中文说明书 - 8/29/2005
	(pdf - 867 KB)

»	LD290 - Catálogo Português - 7/29/2010
	(pdf - 4.36 MB)

»	LD290 - Deutsch Catalogue - 7/15/2010
	(pdf - 3.06 MB)

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»	Pressure Transmitter

LD290
Pressure Transmitter 4 to 20 mA Microprocessor Based

The LD29X series is the economical alternative in routine gage pressure measurement. The lightweight design eliminates the need for mounting brackets and transmitter supports in many applications. The model LD290 is a pure 4-20 mA transmitter.

Besides its analog output, its microprocessor-based electronics allow for total interchangeability with SMAR capacitive sensors. It automatically corrects sensor characteristic changes caused by temperature fluctuations.

Some Characteristics:

Output	Two-wire, 4-20 mA with HART superimposed digital communication signal
Range	0 to 25 MPa (3600 psi)
Rangeability	Accepts calibration from URL to URL/40
Accuracy	± 0.075% of calibatred span
Power Supply	12-45 Vdc
Update Output Current	100 ms
FMEDA	Analysis done by Exida
MTBF	239 years
SIL	Yes
Calibration	With reference and without reference
Access Protection	Yes, by hardware
Diagnostic	Yes, by LCD
Indicator	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 FOUNDATION fieldbus and PROFIBUS PA	With the simple exchange of the main electronic board can be easily converted to these digital protocols.
Ambient Temperature Limits	-40 to 85 ºC (-40 to 185 ºF)
Process Temperature Limits	-40 to 100 ºC (-40 to 212 ºF) (Silicone Oil) 0 to 85 ºC (32 to 185 ºF) (Fluorolube Oil)
Ambient Humidity Limits	0 to 100% RH
Housing	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).
Weight	Less than 2.0 kg (4 lb)