Atec Fluke-7250 Series - Manual

Technical Data
Features
• Pressure ranges from 0 to 5 and 0 to
3 000 psi (0 to 35 kPa and 0 to 21 MPa)
• Model 7250xi and 7250i provide advanced
precision of 0.005 % of reading
• Model 7250 provides 0.003 % of full scale
precision
• Stability: 0.0075 % of reading per year
• Time to setpoint: 20 seconds with no
overshoot
• Control stability: 10 ppm
• Active matrix color screen with enhanced
navigation menus
• Languages: English, French, Chinese,
German, Japanese, Spanish and Italian
Series 7250
Ruska Pressure
Controller/Calibrator
The Series 7250 high speed digital pressure
controllers represent the fifth generation of
automatic pressure controllers from Fluke Cali-
bration and offers unmatched performance, an
active matrix color screen and enhanced control
stability. Utilizing multiple sensors and ranges in
a single instrument, the Series 7250 combines
precision, stability, speed and affordability.
Models 7250xi, 7250i and 7250, up to
2 500 psi (17.2 MPa), use a unique quartz
sensor, the most accurate pressure sensing
technology in a pressure calibrator. Each quartz
sensor is manufactured and tested to provide
the ultimate performance required by a Fluke
Calibration pressure calibrator, ensuring that
every customer receives quality, precision and
stability in their instrument.
Advanced precision
Models 7250xi and 7250i offer advanced per-
cent of reading precision for increased capability
with a single instrument, reducing the invest-
ment required to calibrate a wide variety of
pressure devices and ranges. The Model 7250xi
provides 0.005 % of reading precision from
5 % to 100 % of the instrument’s range. This
unmatched precision is achieved through unique
quartz pressure sensing technology and mul-
tiple quartz sensors in a single instrument. The
7250xi is available with any full scale range
from 20 to 2 500 psi (140 kPa to 17.2 MPa). The
Model 7250i provides 0.005 % of reading from
25 % to 100 % of range and is available with
any full scale range from 5 to 2 500 psi
(35 kPa to 17.2 MPa).
For pressure below the lower threshold of
5% for the 7250xi and 25 % for the 7250i, the
precision becomes 0.005 % of the lower value.
For example, a 1 000 psi (7 MPa) Model 7250xi
provides 0.005 % of reading from 50 to 1 000
psi (35 kPa to 7 MPa); the precision for pressures
from 0 to 50 psi (0 to 35 kPa) is 0.005 % of
50 psi (35 kPa).
Selecting the full scale range of the 7250xi
and 7250i to purchase is simplified with the
percent of reading capability. Simply determine
the highest pressure required and then decide if
0.005 % of reading is required down to 25 % or
5 % to maintain the appropriate calibration ratio.
The complex analysis associated with selecting
the appropriate single or multirange instruments
with percent of full scale performance is no