Flexar® Guided Wave Radar
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Manufacturer: Monitortech(USA)
Model: Flexar® Guided Wave Radar
Introduction:
The Flexar® continuous level measurement system is a smart guided wave radar device used for monitoring the level of powders, granules and other bulk solids. It is also suitable for use with a multiplicity of liquids. It is used in a wide assortment of vessels and industries for measuring levels up to 200ft (60m) in height.
Bringing the Pieces Together: Manufactured at our facility in Elburn, IL, we uniquely combine this proven and strategically acquired technology with almost five decades of expertise and focus in powder and bulk solids applications, and with our SiloTrack™ inventory management software interface. Monitor Technologies uniquely provides the best solutions in level measurement and inventory management of powders and bulk solids.
The Flexar guided wave radar level sensor and/or transmitter requires no field calibration or re-calibration and can be setup easily by customer personnel without the use of any special tools or training. Flexar units are suited for almost any application, can operate with process temperatures up to 392° F (200°C), can be provided with a variety of process connections and can work reliably with materials having a wide range of bulk densities and dielectric constants.
Flexar is available with a choice of two outputs. The standard output is a “smart” interface for use with SiloTrack™ Version 3.5 PC-based inventory management software. This network-ready software provides a flexible graphical interface for up to 128 “smart” output sensors. In lieu of this “smart” output, an optional analog output is also available.
Features
 Solid-State Performance, No Moving Parts.
Unlike weight and cable based systems of old, Flexar® guided wave radar level sensors are state-of-the-art and use a time-proven electronic method for continuous measurement of a material level. This non-mechanical means of measurement helps ensure low maintenance.
Measure Materials With Dielectric > 1.4 (TBF Mode).
Flexar sensors are capable of sensing and measuring the level of most any material. Materials with dielectric constants below 1.8-2.1 require the use of our TBF (tank bottom following) measuring mode.
Unaffected By Dust And Changes In Material Properties.
The technology employed in Flexar units has been proven to be unaffected by airborne dust even during pneumatic filling operations. Unlike through-air technologies such as ultrasonic, through-air radar and laser, Flexar can reliably measure in dusty environments without sacrificing performance or reliability.
Range Of Probes.
In order to handle the assortment of applications possible with Flexar, Monitor offers a range of probe styles including single-cable, twin-cable and single-rod. All probes are constructed of 316 stainless steel, have traction load handling capabilities suitable for their respective applications and are easily field replaceable. Consult with Monitor’s factory-based technical support personnel to select the right probe style for your application.
Assortment Of Process Connections.
To meet the required bulk solids and liquid applications we have prepared a selection of process connections that will ensure a smooth and simple installation. Flexar sensors can be provided with 1-1/2” NPT, 1-1/2” BSP G, 2” ANSI or DIN DN50PN40 flange connections. Probe type will determine the available process connections.
Dual Compartment Enclosure.
The Flexar smart guided wave radar sensor uses an enclosure with two compartments, each with its own access cover. This allows separation of access for wiring and setup/display. The setup/display compartment is provided with a cover window allowing local viewing of the LCD display. In addition, every unit is provided with either two 1/2” NPT conduit entrances (NPT threaded and ANSI flanged process connections) or M20 cable connectors (BSP threaded and DN flanged process connections).
Local LCD Display And Setup.
Each sensor includes a built-in user interface consisting of a three-line backlit LCD display, three pushbuttons and three magnetic sensors (used to perform setup and interact with the unit without having to remove the display cover).
Universal Power Supply.
Power supply choices include a universal high voltage option 100-240 VAC and a low voltage 24 VAC/VDC option.
Choice of outputs.
The standard output for all Flexar guided wave radar units is a “smart” RS-485 communications interface for use with SiloTrack™ Version 3.5 inventory management software. In lieu of this “smart” interface an analog 4-20mA output is available.
Remote electronics available.
The standard unit includes the electronics integrally mounted with the sensor. However, remote mounted electronics is optionally available for applications where the electronics are desired to be mounted away from the probe due to extreme vibration, temperature or for convenient access to the local operator interface. The remote electronics version includes a pre-wired 16.4ft (5m) interconnecting cable.
All units include the CE mark and are approved for use in ordinary locations.
Technical Data:
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Power Requirements:
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100-240VAC (+10%/- 15%); 9VA; 50/60Hz or
24VAC/VDC (+10%/- 15%); 9VA/W
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Altitude:
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6562ft (2000m) maximum
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Installation Category:
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II
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Pollution Degree:
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4 (reduced to 2 by enclosure) Suitable for indoor/outdoor use
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Process Temperature:
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Ordinary Location Units
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-20°F to +300°F (-30°C to +150°C);
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Hazardous Location Units
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-20°F to +392°F (-30°C to +200°C)
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Ambient Temperature:
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-5°F to +120°F (-20°C to +50°C)
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Operating Pressure:
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1-1/2” NPT
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-14.5psig to +580psig (-1bar to +40bar)
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G 1-1/2 (1-1/2” BSP):
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-14.5psig to +580psig (-1bar to +40bar)
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2” ANSI:
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-14.5 psig to 150 psig (-1bar to 10bar)
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DN50PN40:
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-14.5psig to +580psig (-1bar to +40bar)
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Measurement Range:
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Single Cable 0.16” (4mm):
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150ft (45m)
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Single Cable 0.31” (8mm):
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100ft (30m)
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Twin Cable 0.16” (4mm):
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200ft (60m)
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Single Rod .38” (10mm):
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10ft (3m)
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Accuracy:
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Direct Mode: Solids
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± 0.8” (20mm)
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Liquids
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< 20ft (6m): ± 0.2” (5mm)
≥ 20ft (6m): ± 0.2” (5mm) + 0.02% of distance measured
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TBF Mode (All):
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± 0.8” (20mm) when Dielectric is constant
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Repeatability:
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± 0.04” (1mm)
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Resolution:
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± 0.012” (0.3mm)
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Minimum Dielectric Constant:
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Direct Mode
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Twin Cable ≥ 1.8; Single Cable/Rod ≥ 2.1
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TBF Mode
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All Probe Styles ≥ 1.4
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Process Mounting Connection:
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Single Cable/Rod Only
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1-1/2” NPT; G 1-1/2 (1-1/2” BSP)
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All probe Styles
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2” ANSI 150lb. Flange; DN50PN40 Flange
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Conduit/Cable Entry:
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NPT/ANSI Process Connections
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(2) 1/2” NPT
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BSP/DN Process Connections
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(2) M20 x 1.5 cable connectors
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Probe Styles:
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Single Cable:0.16” (4mm)
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316SS
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Single Cable:0.31” (8mm)
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316SS
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Single Rod
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316SS; 0.38” (10mm) diameter;
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Twin Cable
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316SS; Two 0.16” (4mm) cables; FEP spacers
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Weight:
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Enclosure
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18lb (8kg) without probe for ordinary location;
20lb (9kg) without probe for hazardous location;
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Single Cable
0.16” (4mm)
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0.08lb/ft (0.12kg/m)
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Single Cable 0.31” (8mm)
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0.28lb/ft (0.41kg/m)
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Single Rod
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0.42lb/ft (0.62kg/m)
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Twin Cable
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double weight of 4mm cables above for twin cable
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Maximum Traction Loading:
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0.31” (8mm) Single Cable
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7,700lbs/3.9 tons (3.5 metric tons)
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0.16” (4mm) Single Cable
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2250lbs/1.1 tons (1.02 metric tons)
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Minimum Separation From Objects:
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Single Cable/Rod
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12” (300mm)
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Twin Cable
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4” (100mm)
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Output Signal:
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“Smart”:
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RS-485, half-duplex, isolated, proprietary protocol
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Analog:
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4-20mA; 350ohms maximum load
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Wiring Distance (“smart” output):
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4,000ft (1,220m)
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Local Display:
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3-line; Backlit LCD; 3 pushbuttons;
3 magnetic sensors for setup without cover removal
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Materials of Construction:
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Enclosure:
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Aluminumm, powder coated
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Threaded/Flange Connection:
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316 Stainless Steel
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Process Insulator:
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Teflon (PTFE)
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O-Ring Seal:
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Viton
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Probes:
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316 Stainless Steel
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Remote Electronics:
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16.4’ (5m) pre-wired interconnection cable
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Dead Zones:
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Single Cable/Rod
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Dielectric = 80 (water)
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Top = 15.75” (400mm)
Bottom = 0.8” (20mm)
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Dielectric = 2.4 (oil)
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Top = 19.7” (500mm)
Bottom = 3.9” (100mm)
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Twin Cable
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Dielectric = 80 (water)
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Top = 9.8” (250mm)
Bottom = 0.8” (20mm)
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Dielectric = 2.4 (oil)
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Top = 13.0” (330mm)
Bottom = 0.8” (20mm)
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Enclosure Rating:
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ENCLOSURE TYPE 4X, IP66
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Approvals:
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Integral Electronics Only
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Ordinary Location
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CE Mark
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Hazardous Location
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CSA(US/C) Class I, Div 1,2, Groups B, C, D;
Class II, Div 1,2, Groups E, F, G; Class III
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Remote Electronics
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Ordinary Location
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CE Mark
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Hazardous Location
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