GE Druck ADTS 405 R/F Mk2 Instruction Manual page 118

Chapter 6. REFERENCE AND SPECIFICATION
ADTS 405F and ADTS 405R Performance expressed in example pressure units
Static
(Ps)
Units mbar
abs
Maximum 3 to
1355
a
Range
Calibrated or 35 to
Standard 1355
a
Range
±0.1
b
Accuracy
Resolution 0.01
a. Pressures below 35 mbar absolute and the peak rates of change are available but subject
to the use of a suitable vacuum pump.
b. Accuracy, (expanded uncertainty K=2); includes Non-linearity, Hysterisis and repeatability
over full temperature range, 12 months drift and calibration standard uncertainty.
c. The accuracy figures assume Auto-Zero function is off.
Control Performance
Stability
The ADTS 405 provides stable pressure values at the outlet ports and continues to control
smoothly without oscillation into volumes of up to 17 litres (1,000 cubic inches) on Ps and a volume
of up to 10 litres (600 cubic inches) on Pt at rates up to 6000 ft/min. Lower volumes enable higher
rates of change to be achieved.
The following are the figures based on a 40 ppm of Ps full-scale or Qc full-scale over a bandwidth of
0.1 to 1.5 Hz and using RMS values. Below are shown the two Qc ranges used by the ADTS 405
100 | ADTS 405 Mk2 Instruction Manual-English
Rate Ps Pitot Pitot
(Pt) (Pt)
1000 850
knts knts
mbar/ mbar abs mbar abs
min
10,000 3 to 3500 3 to 2700
200 35 to 35 to
3500 2700
±1% 0.26mbar 0.20mbar
within 5
seconds
0.01 0.01 0.01
Channel
Ps 1,355 mbar
40 inHg
Qc 1,700 mbar
50 inHg
Qc 2,500
74 inHg
Differential Differential
(Qc) (Qc)
1000 850
knts knts
mbar diff mbar diff mbar/
min
-1352 to -1352 to 10,000
3377 2700
-1320 to -1320 to 200
2500 1700
RSS of Ps RSS of Ps ±1%
c c
and Pt and Pt
0.01 0.01 0.01
Controller
Stability
±0.038 mbar
±0.0011 inHg
±0.045 mbar
±0.0014 inHg
±0.070 mbar
±0.0021 inHg
© 2015 General Electric Company – All rights reserved.
Rate Qc EPR
-
0.1 to 10
0.1 to 10
better
than 0.005
0.001