Emerson AMS EZ1000, Operating Manual

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Technical data
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Table 11-2: Additional inaccuracies – DSL
(continued)
Parameter
Additional
Measurement
Inaccuracy (DSL),
Test range Additional
Measurement
Inaccuracy (DSL),
Operating range
Remarks
Extended measuring
range: 2.0 mm
(Extended range factor:
2.0)
Manual calibration 3.75
%
4.0
%
Automatic calibration 3.75
%
4.0
%
Multipoint calibration 0.5
%
1.0
%
Detune 1 / 2 0.75
%
1.25
%
Only possible with
multipoint calibration
11.4.2 EZ 1000 with EZ 108x
Accuracy of the standard measuring chain according to API 670 consisting of EZ 108x-xx-
xx-010, EZ 190x-040, and EZ 1000 with standard target material 42CrMo4 (AISI 4140):
Table 11-3: Accuracy according to API 670
Temperature range DSL ISF
0°C to 45°C (Test range) ± 1.25
%
of MR
(1)
± 5
%
of nominal value
EZ 1000 -35°C to 65°C (Operating
range) ± 3.75
%
of MR
(1)
± 10
%
of nominal value
EZ 190x -35°C to 65°C (Operating
range)
EZ 108x -35°C to 120°C (Operating
range)
(1) Measuring range
The deviation from straight line (DSL) error is the maximum error (in mils) in the sensor
gap reading at a given voltage compared to a 7.87 mV (8.0 mV) per micrometer best fit
straight line. DSL errors are associated with errors in axial position or sensor gap readings.
The incremental scale factor (ISF) error is the maximum amount the scale factor varies
from 7.87 mV (8.0 mV) per micrometer when measured at specified increments
throughout the linear range. Measurements are taken at 250 µm increments. ISF error is
associated with errors in radial vibration readings.
Basis of the data are measurements with:
• EZ 1000 and EZ 190x at temperature of EZ 1000.