Magnetrol - Pulse Burst Radar
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Model R82 Radar Transmitter and Sensor
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| SYSTEM DESIGN |
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Measurement Principle |
Pulse Burst Radar @ 26 GHz |
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| INPUT |
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Measured Variable |
Level, determined by the time-of-flight of a radar pulse from the |
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transmitter to the product surface and back |
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Zero and Span |
15" to 40 feet (0.4 to 12.2 m) as measured from threads |
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| OUTPUT |
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Type |
Analog: 4–20 mA with optional HART digital signal |
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Range |
Analog: 3.8 to 20.5 mA useable (Namur NE43) |
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Digital: 0 to 999" (0 to 9999 cm) |
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Resolution |
Analog: 0.01 mA |
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Digital: 0.1" |
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Loop Resistance |
GP/IS/XP 400 Ω @ 24 VDC/20 mA; 350 Ω @ 24 VDC/22 mA |
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Diagnostic Alarm |
Adjustable 3.6 mA, 22 mA, HOLD |
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Damping |
Adjustable 0–45 |
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Output at Antenna |
< 0.1 mW (avg), < 2 mW (max) |
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| USER INTERFACE |
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Keypad |
Four-button, menu-driven data entry and system security |
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Indication |
Two-line × 16-character display |
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Digital Communication |
HART Version 5 compatible |
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| POWER (Measured at instrument terminals) |
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General Purpose/Intrinsically Safe |
16 to 36 VDC |
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| HOUSING |
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Material |
Lexan base and cover or |
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Cast aluminum A356T6 (< 0.2% copper) |
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Cable Entry |
3⁄4" NPT, M20 |
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Ingress Protection |
Lexan Housing: NEMA 6P (IP67/68 |
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Aluminum Housing: NEMA 4X/6P (IP67/68) |
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| ANTENNAS Encapsulated Horn: Polypropylene or Tefzel` (optional) |
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Wetted Surfaces |
Polypropylene or Tefzel |
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Maximum Process Temperature |
-40 to +200° F (-40 to +93° C) @ atmos |
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Maximum Process Pressure |
Vacuum to 200 psig @ +70° F (-14.5 to 13.8 bar) |
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Minimum Dielectric |
1.7 (application dependent) |
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Process Connections |
2" NPT/BSP sanitary flanges |
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| ENVIRONMENT |
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Operating Temperature Range |
-40° to +175° F (-40° to +80° C) |
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LCD Operating Temp. Range |
-5° to +160° F (-20° to +70° C) |
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Storage Temperature |
-50° to +175° F (-46° to +80° C) |
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Humidity |
0-99%, non-condensing |
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Electromagnetic |
Meets CE requirements EN 50081-2, EN 50082-2 |
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| PERFORMANCE (Reference: Reflection from ideal reflector at +70° F / +20° C) |
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Reference Conditions |
Reflection from ideal reflector at +70° F (+20° C) |
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Linearity |
±0.2" (5 mm) or 0.05% of tank height (whichever is greater) |
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Measured Error |
±0.2" (5 mm) or 0.05% of tank height (whichever is greater) |
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Resolution |
0.1" (2.5 mm) |
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Repeatability |
±0.1" (2.5 mm) or 0.025% of tank height |
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Warm-up Time |
30 seconds |
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Ambient Temperature Effect |
0.05% per 10° C |
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Process Dielectric Effect |
< 0.3 inch within selected range |
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Maximum Rate of Change |
180 inches (450 cm) / minute |
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