Summary of Specifications
Uncertainty Analysis
A
A-5
Table A-4. Uncertainty Analysis for RUSKA 7252 — One Year Analysis
Uncertainty Analysis – One Year Calibration Interval
RUSKA 7252
Uncertainty
(2 sigma)
A. Performance — (Linearity, Hysteresis, Repeatability and Temperature)
0.003% of Full Scale
B. Stability — (1 year)
0.0075% of Reading / year
C. Calibration Standard — (RUSKA 2465 DWG)
0.0010% of Reading
D. Environmental —
Temperature (Included in A. above)
0.000% of Reading
Head Pressure
0.001% of Reading
Control — (in Active Control Mode)
0.001% of Full Scale
2 sigma Expanded Uncertainty (RSS)
0.0032% of Full Scale RSS with
0.0076% of Reading per year
Barometric Reference Sensor — Option
The two sigma expanded uncertainty of the barometric reference sensor is estimated to be
less than or equal to 0.002 psi (13.8 Pa) per year. This uncertainty component should be
combined RSS with the primary sensor uncertainty when operating in the absolute mode
with a barometric reference sensor.
Evacuated Reference — Option
The two sigma expanded uncertainty of the vacuum sensor used to monitor the reference
pressure is estimated to be less than or equal to 10 mtorr (1.33 Pa) per year. This
uncertainty component should be combined RSS with the primary sensor uncertainty
when operating in the absolute mode with an evacuated reference vacuum sensor.
Specifications
General Specifications
Pressure Range:
Minimum; 0 to 5 (0 to 700 mbar)
Maximum; 0 to 3000 psi (0 to 200 bar)
Display:
6.4 inch, TFT Active Matrix Color
Display Resolution:
User-selectable up to 1:1,000,000
Electrical Power:
100 – 120 VAC / 220 – 240, 50 – 60 Hz Single Phase 150 W
Operating Temperature:
18 °C – 36 °C
Storage Temperature:
–20 °C – 70 °C
Humidity:
5% – 95% relative humidity, non-condensing
Nominal Control Volume: 5 in
3
– 60 in
3
(80 – 1000 cc’s)
Dimensions: 7
"
H x 16.5
"
W x 19
"
D (17.8 cm x 41.9 cm x 48.3 cm)
Weight:
20 lb (9 kg)
Standard Pressure Units:
inHg at 0 °C and 60 °F, kPa, bar, psi, inH
2
O at 4
o
C, 20
o
C, and
25 °C, kg/cm
2
, mmHg at 0 °C, cmHg at 0 °C, and cmH
2
O at 4 °C
Pneumatic Ports:
1/4 inch NPT female
Relief Valves:
Test Port: 120% of Maximum Scaled Quartz Sensor Range
Reference: 10 Psig (where applicable)
Summary of Contents for RUSKA 7252
Page 3: ...7252 Change Language Hold key for 5 seconds enter mode ...
Page 4: ......
Page 10: ...RUSKA 7252 Users Manual vi ...
Page 12: ...RUSKA 7252 Users Manual viii ...
Page 20: ...RUSKA 7252 Users Manual 1 6 ...
Page 40: ...RUSKA 7252 Users Manual 3 6 ...
Page 72: ...RUSKA 7252 Users Manual 4 32 ...
Page 114: ...RUSKA 7252 Users Manual 6 22 ...
Page 118: ...RUSKA 7252 Users Manual 7 4 ...
