loop-powered radar transmitters eclipse is a two wire, loop powered, 24vdc level transmitter based...
TRANSCRIPT
Loop-powered RADAR transmitters
Eclipse is a two wire, loop powered, 24vDC level transmitter based on Guided Wave Radar and offered with a 2 line x 8 character display and/or HART communications.
How Does It Work? Pulses of high frequency
energy are sent down a probe (wave guide) and timing circuitry measures the reflection of the signal off the surface of the process
The higher the dielectric, the stronger the return signal
TDR Circuitry
Digital Circuitry
Display
Keypad
Explosion-proof andWatertight feedthrough
Terminal Connection board
Electronic Nameplate
Universal High Frequency
Connector
Wiring Compartment
Electronic Compartment
Advantages
Compact and lightweightLoop-powered for ease of installationTop-mounted with with quick connect and disconnect featureErgonomic and functional dual-chamber enclosures rotate 360ºHART and AMS capable13 probes (coaxial, twin-rod, single rod)
Advantages
Challenging applications that include shifting and changing mediaHigh temperature & high pressure applicationsMenu driven user interface with simple straightforward set-up and configurationInternational hazardous location approvalsProven performance with more than 12000 units installed worldwide
Where to apply
Challenging applications (saturated steam, 100% full vessels or chambers, extremes in temperature and pressure; dielectric media as low as 1.4; shifting gravity and dielectric media
Wide probe selection accomodates a broad range of media – from solvents to viscous Bunker C fuel oils and coating media such as latex paints
Where to apply
Hazardous area service in Power, Offshore/Onshore production, Refining, Chemicals and Petrochemicals
Tanks and vessels up to 20 feet high (705) and 50 feet high (708)
Interface measurement up to 12 feet (707)
Where to apply
Applications where traditional instruments have not fulfilled user expectations for reliability or performance (i.e. DP or RF transmitters, Torque Tube transmitters/controllers, Magnetostrictive devices)
Where to exercise caution
Vessel or media are at or near the maximum capabilities of EclipseCaustic or acidic media may present corrosion-related problems for the probeProbe may encounter bridging due to dirty or highly viscous mediaExcessive vortices or agitation that may damage the probeBoiling and/or flashing may occur
Where NOT to apply
Eclipse maximum operating temperatures, pressures or specifications are exceededMedia with dielectric < 1.4Tank heights greater than 50 feetHeadroom does not permit safe installation of a rigid probeInterface applications where upper and lower dielectric media are out of rangeTop medium is higher dielectric than lower medium (707 only)
Where to usePULSAR instead
Medium’s viscosity exceeds selected probe’s capabilities
Diminished headroom only allows for use of radar transmitter with small antenna
Long probes are difficult or unsafe to install
End-user prefers non-contact devices
Corrosion or viscosity conditions favor specification of non-contact device
Horizon Model 703
Horizon Model 703
Cost effective blind transmitter in a single-compartment housingPushbutton Calibration with a 3-pushbutton, 3 LED user interfaceLevel movement or “Level-simulation” required for calibration
Horizon Model 704
Horizon Model 704
Intermediate transmitter in a single-compartment housingOptional LCD and HART outputNo level movement required for configuration
Advantages
Stripped-down Eclipse versions for simple applications703 simplest version, very economical704 same display as EclipseCompact, lightweight and affordableLoop-powered for ease of installationBroad range of industry segments and applications
Advantages
Choice of plastic or aluminum single compartment enclosureCoaxial, twin-rod and single rod probes up to 16 feetGeneral purpose areas in clean industry applications where XP is not needed (Valox housing versions)Worldwide safety approvals
Where to apply
703: OEM, water-wastewater and general non-hazardous locations704: Hygiene-intensive industries where 3-A authorized probe, Tri-Clamp fiting and a plastic housing make easy CIP while eliminating an oxydation threatEither: Tanks, open channels, pits, sumps or wet wells up to 16 feet tallApplications within unit’s specifications
Where to exercise caution
Vessel or media are at or near the maximum capabilities of HorizonCaustic or acidic media may present corrosion-related problems for the probeProbe may encounter bridging due to dirty or highly viscous mediaExcessive vortices or agitation that may damage the probeBoiling and/or flashing may occur
Where NOT to apply
Maximum operating temperatures, pressures or specifications are exceeded
Media with dielectric < 1.7
Tank heights greater than 16 feet
Headroom does not permit safe installation of a rigid probe
Where to usePULSAR instead
Medium’s viscosity exceeds selected probe’s capabilities
Diminished headroom only allows for use of radar transmitter with small antenna
Long probes are difficult or unsafe to install
End-user prefers non-contact devices
Corrosion or viscosity conditions favor specification of non-contact device
Enclosure
Module
Launcher
Electronics
Antenna Offering
400F (204C) 200F (93C) 400F (204C)
TFE Polypropylene 4” 6”
675psig (46.5bar) 750psig (51.7bar) 675psig (46.5bar)
Min. Dielectric 2.0 1.7
Advantages
Compact, lightweight and affordableLoop-powered for ease of installationNon-contact technology, top-mounted with quick connect/disconnectUnaffected by fumes and vapors above the process levelTolerates turbulence and light to medium density foam
Quick-Start procedures simplify set-up and start-upDual compartments for convenient wiring and displayChanging dielectrics or conductivity do not affect measurement accuracyAdvanced signal processing extracts true level from false reflectionsAvail. 4” & 6” metal horn and dielectric rod antennas (polypropylene and Teflon)
Advantages
Where to apply
Where measuring requirements exceed capabilities of Eclipse GWRWhere Pulsar is more cost effective due to the probe length of GWRVessels where there is insufficient headroom for a probe instrumentWhen user prefers non-contact devicesHighly viscous, coating media which could cause bridging of GWR probes
Where to exercise cautions
Vessel contents may reach 100% full point, or within 2” of the antennaVery low dielectric media combined with very long measurement rangesVessels containing low dielectric media which normally operate at very low levelTanks with internal obstacles, or where severe turbulence or foam existsVessels operating at or near the maximum recommended operating conditions
Where NOT to apply
Where the maximum operating specifications are exceededDielectrics below 1.7 for horn antennas or 2.0 for dielectric rodsAcids, corrosives or caustics incompatible with antennas or process seal/connectionsExtreme turbulence, excessive foam, vortices or rollover process conditionsExcessive product build-up on antennaStandpipes and stillwells
Where to useGWR instead
Excessive foam is present
Dielectrics below 1.7
Low dielectric media (1.7<<2.0) combined with very low product levels
Extremely short measuring ranges
Toperating > 400ºF
Poperating > 750 psig @ +70ºF
Where to useGWR instead
Saturated steam applications (deaerators or steam drums)
Overfill conditions(applications require 100% of total capacity)
Sanitary applications requiring 3-A Authorization
The Most Potent Combination in the Level Measurement Industry!