5-2 / Specifications 2808B
Recovery:
Time to steady output after application of
24 volt supply with constant pressure is 250
ms maximum (With No Damping)
Linearity: On low-range models, full vacuum can represent
an appreciable percentage of URL. If, on those
models, calibration contains 50% of zero
elevation, non-linearity errors can be as high as
+
1%.
5.2 PERFORMANCE SPECIFICATIONS
Accuracy: (Includes independent linearity, hysteresis and
repeatability)
+
0.1% of calibrated span
Resolution: Virtually infinite
Long Term Stability: At constant conditions. +
0.25% of URL/6 mo.
Ambient Temperature Effect: Total including Zero & Span
+
0.010% of URL per °F from -25 to 75 °F
+
0.015% of URL per °F from 75 to 185 °F
+
0.020% of URL per °F on 100 inH
2
O only
Power Supply Effect: +
.005 %/Vdc
Ripple and Noise: In accordance with ISA 50.1, Section 4.6
5.3 ENVIRONMENTAL SPECIFICATIONS
Temperature Limits: Wet End using DC 200 Fill:
-40 to 220 °F (-40 to 104 °C)*
Amplifier:
-25 to 185 °F (-32 to 85 °C)
Digital Indicator:
-22 to 158 °F (-30 to 70 °C)
Storage:
-40 to 212 °F (-40 to 100 °C)
* The maximum permissible temperature inside
the enclosure (irrespective of sensor
temperature) is 185 °F (85 °C) for the amplifier
board, and 158 °F (70 °C) for the digital indicator
option.
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