The Model 7250 digital pressure controller/calibrator covers various pressure ranges from 0-5 psi (40kPa) to 0-3000 psi (21Mpa) and is an economical product for the 7250xi and 7250i. The 7250 is accurate to 0.003% of full scale and reaches set point quickly with no overshoot in 15 seconds. If higher performance is required, refer to the Models 7250i and 7250xi Digital Pressure Controllers.
The 7250 digital pressure controller features a color display, enhanced navigation menu, and control stability up to 10ppm.
- 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.
Technical indicators |
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pressure range | Gauge pressure is optional between 40kPa~16MPa; absolute pressure is 100~400kPa and 21MPa |
Optional | Absolute pressure range using atmospheric reference sensor, from 100kPa to 17.2MPa gauge pressure, vacuum (negative gauge pressure) range from 100kPa to 17.2MPa gauge pressure |
temperature | Working temperature: 18~36℃; Storage temperature: -20~70℃ |
humidity | 5%~95%RH, no condensation |
Preheat time | 2~3 hours; can be turned on continuously |
pressure medium | Nitrogen or clean dry air |
Test port | 1/4"NPT internal thread |
Control parameters | Load capacity: 82~980cc, minimum control (absolute pressure): 1kPa absolute pressure |
communication | RS-232 and IEEE488 interface, SCPI protocol. Roska 7215 series, 7010 series, 6000 series and DPI-510 emulation mode. The LabVIEW driver can be downloaded for free from the Fluke website, and software upgrades can be completed through the RS-232 interface. |
Menu language | Chinese operation menu |
show | TFT, VGA, active matrix, 6.4 inches, 640×480 resolution, 65.000 colors |
Dimensions | All models are 18cm high x 43cm wide x 48cm deep |
weight | 7.7 kg |
Atmospheric reference (optional) | The maximum error is 13.79Pa per year |
Accuracy | to 17.2MPa: ±0.003%FS, 21 MPa 30% to 100% full scale 90 day: 0.012% reading 1 year: 0.013% reading |
stability | To 17.2MPa: ±0.0075%Rdg per year, 21MPa absolute pressure: ±0.01%FS per year |
control stability | Active mode: ±0.001%FS (10ppm) Passive mode: no additional uncertainty |
display resolution | User selectable, up to 1:1.000.000 |
Controller response speed | When the load volume is 245cc, the controller can stabilize the output without overshoot within 15 seconds. When the 7250 range is 21MPa, the response time is 30~45 seconds. |
Negative gauge pressure accuracy | ±0.003%FS |
check | The controller comes with a calibration report traceable to NIST. Maximum deviation from true pressure value including accuracy, stability, temperature effects and calibration |
total uncertainty | (~17.2MPa), 90 days: ±0.003%FS/±0.002%Rdg, 1 year: ±0.003%FS/±0.0075%Rdg Pressure range 21MPa Absolute pressure, 90 days: ±0.01% (per range) FS, 1 Year: ±0.014% (per range) FS |
型号 | 描述 |
---|---|
7250 |
高速数字压力控制器 |
7250i |
高速数字压力控制器 |
7250xi |
高速数字压力控制器 |
通用配件:
配件 | 描述 |
---|---|
7250-CASE |
带有轮子和把手的手提箱 |
7250-903 |
机架安装套件19 in 机架安装工具EIA 机柜,24 in深 |
7250-904 |
机架安装套件,19 in 机架安装工具EIA 机柜,30 in深 |
7000-110 |
线路及配件套件 |
99878-800 |
自动排气真空泵,85 升/分钟,50/60 Hz |
7000-102 |
油污隔离器 |
COMPASS for Pressure |
自动执行测试、数据采集、报告与设备资产管理的软件 |
优先金牌仪器关怀计划 |
Fluke Calibration 优先金牌仪器关怀计划适用于大部分校准产品。请联系当地 Fluke Calibration 销售代表以了解详细信息或请求报价。您也可以拨打 877-355-3225 致电客户服务中心或发送电子邮件至 careplans@flukecal.com。 |
银牌关怀计划 |
Fluke Calibration 银牌关怀计划适用于大部分校准产品。请联系当地 Fluke Calibration 销售代表以了解详细信息或请求报价。您也可以拨打 400-810-3435 致电客户服务中心。 |
产品手册 |
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应用文章 |
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技术数据 |
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软件 |
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7250 Series Pressure Controllers - Main Firmware Version 1R60 |
LabView 驱动器 |
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LabVIEW Drivers, Pressure and Flow Calibration Products |
文件/文章 |
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On-Demand Webinars |
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Pressure Series, Part 2 of 3 - Intermediate Pressure Calibration |
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