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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
The Series 7250 high speed digital pressure controllers represent the fifth generation of automatic pressure controllers from Fluke Calibration 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 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 20% 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. 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 40 % 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 20 % for the 7250xi and 40% 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 200 to 1 000 psi (1.4 MPa to 7 MPa); the precision for pressures from 0 to 200 psi (0 to 1.4 MPa) is 0.005% of 200 psi (1.4 MPa).
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 40% or 20% 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 longer required. And, since the performance of the 7250xi and 7250i is continuous throughout the range, the time consuming task of controlling to atmosphere and switching ranges is eliminated.
The 7250xi and 7250i not only provide unequalled precision, but also excellent long term stability due to the inherent properties of quartz in combination with several enhancements implemented over the last few years. The total uncertainty of the 7250xi and 7250i over a one year calibration interval is 0.009% of reading down to 20% and 40%, respectively. Simplified specifications eliminate guesswork and “specmanship" to allow you to determine the actual performance delivered with every instrument.
Standard precision
For applications that do not require the level of performance provided in the 7250xi or 7250i, the Model 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).
High pressure precision
For applications that require pressures up to 3 000 psi (21 MPa), the Model 7250HP provides total uncertainty (one year calibration interval) of 0.013% of reading down to 30% of the full scale. The 7250HP provides the high speed control and performance of the standard 7250 with a full scale pressure range of 3 000 psi (21 MPa) absolute.
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