• Measuring range from 0-5 psi (40kPa) to 0-3000 psi (21Mpa)
• Accuracy: 0.003% of full scale
• Quick control: less than 15 seconds, never exceeding the volume limit within 15 cubic inches
• Stability: 0.0075% of reading per year
• Control Stability: 0.001% FS within 2500 psi, (0.002% to 3000 psi)
• Labview® driver available

The high-precision quartz Bourdon tube sensor

7250 high-speed digital pressure controller is Rosska's fifth-generation automatic pressure controller. It has unrivaled performance and a large-screen color Chinese interface display, and enhanced control stability, integrating precision, Stability, speed and versatility all rolled into one. The 7250xi, 7250i and 7250 with a measuring range within 17.2MPa are equipped with Rosska's unique quartz sensors. The performance of each quartz sensor is rigorously tested by Rosskar pressure calibration equipment to ensure that high accuracy is provided to users. , high stability and high reliability products.

Standard Accuracy

For applications that do not require the high-precision instrumentation of the 7250xi and 7250i, the 7250 provides cost-effective automated pressure testing and calibration. The pressure range is within 17.2MPa, and the accuracy is ±0.003% of the full scale. For the pressure range of 21MPa, the accuracy is ±0.01% of the full scale, and three range options are available: 7MPa, 14MPa and 21MPa, and the accuracy is ±0.01%FS of each range.

Flexible and changeable control methods

High-speed pressure control

of all 7250 series instruments, within the range of 17.2MPa (7250 to 21MPa), for a load volume of 245cc, can stably output the set pressure value within 15 seconds or less, without overshoot pressure, can Perform high-speed stress testing and calibration.

Dual control mode

The 7250 series has two control modes: active mode and passive mode for users to choose. In active mode, the 7250 maintains set-point pressure and automatically compensates for pressure changes caused by temperature changes or pressure leaks. In passive mode, the user can define the control error bandwidth. Once the instrument output pressure is within the error bandwidth, the instrument stops controlling. In situations where there is no leakage and the temperature is stable, the passive mode can maximize the high-precision performance of the instrument and eliminate the interference of uncertain factors such as control fluctuations.

Pressure automatic testing and calibration

Automatic pressure test and calibration

7250xi, 7250i and 7250 are very convenient to use and can be automatically calibrated using a variety of methods.

Up/down stepping

is used for calibration with a fixed step size. Enter the user-defined step size. The 7250 series uses the Jog Dial (dial) method to automatically add or subtract the step size instead of a lengthy keyboard operation process.

Preload test

For simple routine operations, such as pointer pressure gauges, just enter a start value, end value and number of repetitions. When running calibration, the 7250 series will automatically preload the instrument being calibrated according to the set parameters.

User programming

is used for frequently used or lengthy verification steps. The 7250 Series can store up to 20 user-defined programs or up to 1,000-point calibration steps.

The standard configuration of the computer interface

7250 series includes RS232 and IEEE488 interfaces, and the interface instructions follow the SCPI protocol for easy programming. The accompanying software includes the free downloadable Lab VIEW driver. As a standard feature, the software included with earlier Roska models 7215, 7010 and 6000 can be used with the 7250 Series. When users using the DPI510 pressure controller upgrade to the 7250 series, they can set the 7250 series to the DPI510 simulation mode without re-developing the calibration software. The system software of the 7250 series can be upgraded through the RS232 interface (download and upgrade versions can be downloaded from the website).

The multi-functional

7250 Series multi-function pressure controller can meet almost any gas pressure calibration need.

Wide pressure range, multiple pressure units available, wide pressure range

The 7250 series can meet the calibration of various standard ranges or user-defined full-scale pressure ranges from 40kPa to 21MPa.

There are twelve standard pressure units available in the pressure unit menu, including inH2O@0℃ and inH2O@60. F, inH2O@4℃, inHg@20℃, inHg@60. F, kPa, bar, psi, inH2O@4℃, inH2O@20℃, inH2O@60. F, kg/cm2, mmHg@0℃, cmHg@0℃, cmH2O@4℃ and two user-defined units.

More professionally designed air column difference correction

7250 series can automatically and accurately correct errors caused by height differences.

Automatic draining and automatic clearing

With just a few simple button operations, the 7250 series can drain the test port to atmospheric pressure or automatically clear it to zero (in permanent absolute pressure working mode, the automatic drain function cannot be used).

To protect the instrument under test, the upper and lower pressure limits can be set to protect the instrument under test.