A Specifications and reference data
A.1 Performance specifications
A.1.1 General
Reference conditions
Single Standard probe, 77 °F (25 °C) in water (DC=80) and ambient pressure in a 4-in. pipe
using Trim Near Zone function.
Reference accuracy
± 0.12 in. (3 mm) or 0.03% of measured distance, whichever is greatest
For probes with spacers, the accuracy may deviate close to the spacers. Accuracy may be
affected by remote housing.
Repeatability
± 0.04 in. (1 mm)
Ambient temperature effect
± 0.008 in. (0.2 mm) /°K or ± 30 ppm/°K of measured value, whichever is greatest
(10)
Electromagnetic interference effect
• Shielded cable: ± 0.2 in. (5 mm)
(11)
• Unshielded cable: ± 2 in. (50 mm)
(11)
For FOUNDATION
™
Fieldbus units it may be required to ground the signal cable shield at the
power supply and transmitter to achieve optimum performance.
Thresholds may need to be adjusted, see Guidelines for setting the amplitude thresholds
for general guidelines on manual threshold settings.
Update interval
Minimum 1 update per second
A.1.2
Environment
Vibration resistance
• Aluminum housing: Level 1 IEC 60770-1/IEC 61298-3 ed 1 chapter 7
(10)
For the BR5 option code with ambient temperatures between -67 °F (-55 °C) and -40 °F (-40 °C), the ambient temperature
effect is ± 0.012 in. (0.3 mm) /°K or ± 45 ppm/°K of measured value, whichever is greatest.
(11) Deviation through electromagnetic interference according to EN 61326.
Reference Manual Specifications and reference data
00809-0100-4530 April 2019
Reference Manual 271
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