Negele LAR-361 Product Information

1
Climatic Independent Level Sensor LAR
Application / Specifi ed usage
· · Hydrostatic level measurement in humid ambiance
· · Special applicable for exterior storage vessels
Application examples
· · Level measurement with LAR, linearization and evaluation with PEM-DD
(6 standard geometries, 1 geometry programmable; see separate product
information)
· · Difference pressure measurement with 2 x LAR and evaluation device PEM-DD
Hygienic design / Process connection
· · By using the Negele weld-in sleeve EMZ-352 or the build-in system
EHG-.../1" a front-fl ush, hygienic and easy cleanable measurement
point will be achieved.
· · EHEDG certifi cate for hygienic process connection
· · 3-A-certifi cate for versions with TriClamp
· · CIP- / SIP-cleanable up to 140 °C (284 °F) / max. 30 min
· · Front-fl ush stainless steel sensor cell
· · All wetted materials are FDA-conform
· · Sensor completely made of stainless steel
· · Protection class IP 69 K (with cable connection)
· · Available process connections (adapter):
Tri-Clamp, SMS, DRD, Varivent, BioControl
Features / Advantages
· · Measurement cell without any contact to atmosphere, fully closed
measurement system
· · No drift problems caused by condensation
· · Very high accuracy and long term stability
· · Measurement up to 130 °C (265 °F) medium temperature
· · Oil fi lling, FDA approved
· · Factory or fi eld calibration
· · Integrated two-wire measurement trancducer 4...20 mA
· · 3 years warranty
Options / Accessories
· · Material certifi cate 3.1
· · Special pressure ranges, specifi c pressure calibration ex works
· · Electrical connection with M12 plug-in connector
· · Preassembled cable for M12 plug-in connector
Measuring principle
The pressure sensor utilizes an internal piezoelectric transducer to convert
the mechanical pressure into a corresponding mV signal. The mV signal then
passes through custom linearization and conditioning circuitry. The resulting
signal is an industry standard 4...20 mA, according to the specifi ed range.
In addition, onboard circuitry handles temperature compensation to ensure a
stable reading during all phases of operation.
Negele Messtechnik GmbH ∙ D-87743 Egg a. d. Günz ∙ Telefon +49 (0) 83 33 / 92 04-0 ∙ Fax +49 (0) 83 33 / 92 04-49 ∙ www.negele.net
CLEANadapt
DIRECTadapt
Product Information LAR-361 | LAR-761
Authorizations
LAR-361 with EMZ-352
(LAR-361)
(LAR-761)
Measuring principle
TYPE EL
March 2006
hydrostatic pressure
+ atmospherical
pressure
temperature
sensor 1
hydraulic
coupling
piezoelectric
transducer
hydraulic
coupling
temperature
sensor 2
atmospherical
pressure