LD302
Foundation Fieldbus Pressure Transmitter Series
The LD302 is a transmitter based on the field proven capacitive sensor that measures absolute, gage and differential pressure using digital sensing. As an intelligent device, it can perform control functions, flow totalization and drive final control elements through the bus. The LD302 can also be configured as a FIELDBUS master station. Configuration can be accomplished through the Syscon software.
The LD302H is a special feature of the LD302D. It is built to measure differential pressures in processes with high static pressure.
The LD302S series are transmitters, using sanitary flange on the high side. Their technical specifications are the same contained in the LD302 catalog. The specification for accuracy, drift, and temperature effect are the same as that of the LD302L.
The LD302S are transmitters for food and other application where sanitary connections are required. They are used where clear-in-place applications are needed. The process connection can be threaded or clamped (Tri-Clamp), to allow a quick and easy connection and disconnection from the process. Wetted surface finish is 3Aa as standard. These series meets 3A recommendation so that the seal surface is free of crevices where food or bacteria can be collected and the finish is extremely smooth. 3A is the most widely accepted sanitary standard in the food, drug, and beverage industry.
The LD302T is a hydrostatic pressure transmitter. It measures static pressure with high accuracy provided by its conical-like shape.
Some Characteristics:
| Communication
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FOUNDATION Fieldbus on 31.25 kbit/s voltage
mode according to IEC 61158-2
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| Range
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0 to 40 MPa (5800 psi)
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| Rangeability
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Accepts calibration from URL to URL/40
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| Accuracy
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± 0.075% of calibrated span
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| Power Supply
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Bus powered: 9-32 Vdc
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| Power Consumption
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Quiescent 12 mA
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| Function Blocks
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Up to 20 Dynamically Instantiable Function Blocks.
The Function Blocks available allow simple and complex control strategies to be placed inside the field device, making the field device an integral part of the control system. In order to fully benefit from the Function Blocks in the device a True Foundation Fieldbus system is recommended.
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| Indicator
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Optional 41/2-digit numerical and 5-character alphanumerical LCD indicator
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| Ambient Temperature Limits
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-40 to 85 ºC (-40 to 185 ºF)
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| Process Temperature Limits
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-40 to 100 ºC (-40 to 212 ºF) (Silicone Oil)
0 to 85 ºC (-32 to 185 ºF) (Fluorolube Oil)
-40 to 150 ºC (-40 to 302 ºF) for LD302L
-25 to 85 ºC (-13 to 185 ºF) (Viton O-Rings)
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| Ambient Humidity Limits
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0 to 100% RH
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| Wetted Parts
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Plated carbon steel, 316L SST, Hastelloy C276, Monel or Tantalum
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| Nonwetted Parts
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Injected aluminum with polyester painting or 316 SST
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| Hazardous Area Certification
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Explosion proof, weather proof and intrinsically safe
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| Weight
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3.15 kg (7 lb): all models, except level transmitters: 5.85-9 kg (13-20 lb)
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