Reference Conditions ➀ Reflection from water at +70 °F (+20 °C) with 72" coaxial probe
(CFD threshold)
Linearity ➁ Coaxial/Twin Rod Probes: <0.1% of probe length or 0.1 inch (whichever is greater)
Single Rod Probes: <0.3% of probe length or 0.3 inch (whichever is greater)
Measured Error ¬ Coaxial/Twin Rod Probes: ±0.1% probe length or 0.1 inch (whichever is greater)
Single Rod Probes ±0.5% probe length or 0.5 inch (whichever is greater)
Resolution ±0.1 inch
Repeatability <0.1 inch
Hysteresis <0.1 inch
Response Time <1 second
Warm-up Time <5 seconds
Operating Temp. Range -40 to +175 °F (-40 to +80 °C)
LCD Temp. Range -5 to +160 °F (-20 to +70 °C)
Ambient Temp. Effect Approximately +0.02% of probe length/ °C
Process Dielectric Effect <0.3 inch within selected range
Humidity 0-99%, non-condensing
Electromagnetic Compatibility Meets CE requirements (EN-61000-6-2/2001, 61000-6-4/2001)
(Twin and Single Rod probes must be used in metallic vessel or
stillwell to maintain CE requirement)
➀ Specifications will degrade with Model 7xB, 7xD, and 7xP probes and/or fixed threshold configuration.
➁ Top 24 inches of Model 7xB probe: 1.2 inches (30 mm). Specification for top 48 inches of single rod will
be application dependent.
¬ Accuracy may degrade when using manual or automatic compensation.
Reference Conditions Reflection from liquid of selected dielectric at +70 °F (+20 °C) with 72" probe
Linearity <0.5 inch
Measured Error Upper layer ±1 inch
Interface layer ±1 inch (clean distinct interface required)
Upper Layer Dielectric 1.4–5.0
Interface Layer Dielectric >15
Resolution ±0.1 inch
Repeatability <0.5 inch
Hysteresis <0.5 inch
Response Time <1 second
Warm-up Time <5 seconds
Operating Temp. Range -40 to +175 °F (-40 to +80 °C)
LCD Temp. Range -5 to +160 °F (-20 to +70 °C)
Ambient Temp. Effect Approximately ±0.02% of probe length/ °C
Humidity 0-99%, non-condensing
Electromagnetic Compatibility Meets CE requirements (EN-61000-6-2/2001, EN 61000-6-4/2001)
(Twin and Single Rod probes must be used in metallic vessel or
stillwell to maintain CE requirement)
57-640 Eclipse Guided Wave Radar Transmitter - FOUNDATION fieldbus 47
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