Fluke Calibration 7250 for Rent, Ruska Pressure Controller / Calibrator

Product Highlights

• 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

The Series 7250 Pressure Controllers/Calibrators 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.

Standard precision
The Fluke Model 7250 pressure calibrator / controller (formerly Ruska 7250) offers an economical approach to automatic pressure testing and calibration with a precision of 0.003 % of full scale for ranges to 2,500 psi (17.2 MPa). A 3,000 psi (21 MPa) full scale range is available with 0.012% of reading precision from 900 psi to 3000 psi (6.3 to 21 MPa) precision.

Models 7250xi and 7250i offer advanced percent of reading precision for increased capability with a single instrument, reducing the investment 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 multiple quartz sensors in a single instrument. Various ranges from 0 to 20 and 0 to 2 500 psi (0 to 140 kPa and 0 to 17.2 MPa) are available.

The Model 7250i provides 0.005 % of reading from 25 % to 100 % of range and is available in various ranges from 0 to 5 and 0 to 2,500 psi (0 to 35 kPa and 0 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 (0.035 to 7 MPa); the precision for pressures from 0 to 50 psi (0 to 0.035 MPa) is 0.005 % of 50 psi (0.035 MPa).

High-speed pressure control
All Series 7250 instruments up to 2,500 psi (17.2 MPa) reach setpoint in 20 seconds or less into a 15 cubic inch (245 cc) volume, with no overshoot, to allow high-speed pressure test and calibration.

Dual control modes
The Series 7250 also provides two user-selectable control modes: active and passive mode. In active mode, the 7250 is continually maintaining the setpoint and can compensate for small leaks and pressure changes due to temperature. In passive mode, the user defines a control band and the 7250 will turn off the controller once it achieves the setpoint within the control band. In a leak-free and temperature- stable system, passive mode contributes no additional uncertainty, providing optimum performance.

Automating pressure test and calibration
The 7250 is easy to use and can automate your calibrations in several ways:

Step up/down: for calibrations where the increments are fixed intervals, enter a userdefined step value. The Series 7250 increases or decreases the pressure by the step amount with the jog dial