1.01 THE REQUIREMENT
A. The Contractor shall furnish, test, install and place in satisfactory operation the Radar level transmitters, with all spare parts, accessories, and appurtenances as herein specified and as shown on the Drawings.
1.02 RELATED WORK SPECIFIED ELSEWHERE
A. Control and Information System Scope and General Requirements
B. Powered Instruments, General
PART 2 -- PRODUCTS
2.01 GUIDED WAVE RADAR LEVEL TRANSMITTERS
A. Guided wave radar level transmitters shall be based on TDR (Time Domain Reflectometry) guided down a probe immersed in process media. Span shall be adjustable over the entire range. Transmitters shall be NEMA 4X weatherproof and corrosion resistant construction with low]copper aluminum body and 316 stainless steel process wetted parts. Accuracy shall be plus or minus 0.2 inch for probes less than 16 feet, plus or minus 0.1% for greater than 16 feet. Output shall be linear isolated 4]20 milliamperes 24 VDC. Power supply shall be 24 VDC, two-wire design. Each transmitter shall be furnished with a 4]digit LCD indicator capable of displaying engineering units and/or milliamps and mounting hardware as required. Overload capacity shall be rated at a minimum of 25 MPa. Each transmitter shall have a stainless steel tag with calibration data attached to body. Output signal damping shall be provided, with an adjustable time constant of 0]60 seconds. Ambient temperature effect shall be less than 0.01% of measured distance per degree C. Process Pressure limitations shall be Full Vacuum to 580 psig. Process Temperature limitations shall be -40fF to 302fF.
B. Where scheduled, guided wave radar level transmitters shall be calibrated in feet of liquid for liquid level service.
C. Guided wave radar level transmitters shall be Model 3300 as manufactured by Rosemount, or equal.
2.02 NON-CONTACTING 2-WIRE RADAR LEVEL TRANSMITTERS
A. Non-Contacting 2-wire radar level shall be based on short radar pulses which are transmitted from the antenna at the tank top towards the liquid. Time difference between the transmitted and the reflected pulse is proportional to the distance, from which the level is calculated. Two separate frequencies shall be offered (6Ghz or 26Ghz) to allow the user to choose the best model to fit the application. Span shall be adjustable over the entire range. Transmitters shall be NEMA 4X weatherproof and corrosion resistant construction with low]copper aluminum body and 316 stainless steel process wetted parts. Accuracy shall be plus or minus 0.1 inch for the 26 GHz unit, 0.4 inch for the 6 GHz unit. Output shall be linear isolated 4]20 milliamperes 24 VDC. Power supply shall be 24 VDC, two-wire design. Each transmitter shall be furnished with a 4]digit LCD indicator capable of displaying engineering units and/or milliamps and mounting hardware as required. Overload capacity shall be rated at a minimum of 25 MPa. Each transmitter shall have a stainless steel tag with calibration data attached to body. Output signal damping shall be provided. Temperature effect shall be less than 0.01% of measured distance per degree C. Process Pressure limitations shall be Full Vacuum to 580 psig (Ansi Class 300 Flange) . Process Temperature limitations shall be -40fF to 302fF.
B. Where scheduled, Non-contacting 2-wire radar level transmitters shall be calibrated in feet of liquid for liquid level service.
C. Non-contacting 2-wire radar level transmitters shall be Model 5400 as manufactured by Rosemount, or equal.
PART 3 -- EXECUTION
3.01 REQUIREMENTS
A. Refer to the Specifications.
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