Pure Digital 7250 Specifications

PN 3952213 November 2010 © 2010 Fluke Corporation. All rights reserved. Printed in USA. Specifications are subject to change without notice. All prod

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual vi

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 6-12 3. Select Zero [F1]. Do NOT press the Calibrate button. When initiating the zeroing command

Maintenance Sensor Photocell Zeroing 6 6-13 3. Enter the Zeroing screen by selecting MENU | CALIBRATE. 4. Select the Primary sensor by pressing

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 6-14 gkn047.bmp Figure 6-8. Correct Adjustment of Photocell Centering Bar 9. Tighten the Allen s

Maintenance Optimizing Control 6 6-15 Optimizing Control The performance of the controller may be optimized for certain environments or performan

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 6-16 Note Prior to performing any Auto-Tune functions in an effort to improve the controller perfo

Maintenance System Software Update Procedure 6 6-17 should indicate a sensor temperature of 50 oC and a duty cycle between 10 to 90%. If operatin

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 6-18 RUSKA 7250 Controller Software Upgrade In addition to the main code, the RUSKA 7250 includes

Maintenance Cleaning 6 6-19 Table 6-3. RUSKA 7250 Additional Parts Part Number Description 3878948 7250xi isolation manifold valve body 3915651

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 6-20

7-1 Chapter 7 Preparation for Storage & Shipping Introduction W Caution The procedures given in this Chapter must be strictly adhered to in order

vii List of Tables Table Title Page 1-1. Symbols...

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 7-2 Fluke has found that corrugated cardboard boxes provide the best packaging exterior. The box

Preparation for Storage & Shipping Packing Instructions 7 7-3 8. Label the carton with the following labels: THIS SIDE UP, HANDLE WITH CARE,

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 7-4 Shipping Instructions Fluke recommends using air freight for transportation. Surface transport

A-1 Appendix A Summary of Specifications Uncertainty Analysis To perform an Uncertainty Analysis on a measurement device, you must be able to identify

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual A-2 Long Term Stability Long term stability defines how the instrument drifts with time. This spec

Summary of Specifications Uncertainty Analysis A A-3 Combining the Uncertainty Components Combining the Uncertainty Components into an Expanded

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual A-4 The following two tables are uncertainty analysis examples for a RUSKA 7250xi based on a three

Summary of Specifications Uncertainty Analysis A A-5 The following two tables are uncertainty analysis examples for a single range RUSKA 7250 bas

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual A-6 Specifications General Specifications Pressure Range: Minimum; 0 to 5 (0 to 700 mbar) Maxim

Summary of Specifications Specifications A A-7 Performance Table A-5. Performance Specifications: RUSKA 7250 Pressure Range 5–1000 psi (0.34–68.

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual viii

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual A-8 MODEL RUSKA 7250i RUSKA 7250xi MODE GAUGE GAUGE Precision1 From 25% to 100% FS: 0.005% RDG

B-1 Appendix B Summary of Error Messages Summary of Error Messages Negative error numbers are from the Standard Commands for Programmable Instruments

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual B-2 Summary of Error Messages, cont. -315 Configuration Data Lost. The configuration data has bee

ix List of Figures Figure Title Page 2-1. Calibrator Block Diagram ...

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual x 4-25. Menu | Test | Sweep - Menu...

1-1 Chapter 1 General Information Introduction This manual contains operation and routine and preventive maintenance instructions for the RUSKA 7250,

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 1-2 Keep Away from Live Circuits Operating personnel must at all times observe safety regulations.

General Information General Information 1 1-3 Table 1-1. Symbols Symbol Description P This equipment meets the requirements of all relevant Europ

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 1-4 Universal Power Supply The Calibrators’s universal power supply accepts AC voltages between 10

General Information Standard Equipment and Options 1 1-5 Automatic Head Correction The Calibrator automatically corrects for head pressure betwee

LIMITED WARRANTY AND LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use an

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 1-6

2-1 Chapter 2 Theory of Operation Introduction The Calibrator’s power supply, electronics, pneumatics, and sensor combine to form a complete, stand-al

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 2-2 Electronics Module Back-Plane Board The Back-plane Board is used to interconnect all of the pl

Theory of Operation Electronics Module 2 2-3 Table 2-1. Conversion Factors Symbol Description Conversion Factor InHg inches of mercury (0°C) =

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 2-4 Pneumatics Module The Calibrator’s Pneumatics Module varies depending on whether the Calibrato

Theory of Operation Pneumatics Module 2 2-5 BACKPANEL Control Section VACUUM SENSOR Option VREFERENCEPORT TESTPORTZERO ISOLATION APPLYRELEASE EXH

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 2-6 Measure Mode Pneumatics Figures 2-2, 2-3 and 2-4 summarize the Pneumatics of the RUSKA 7250. R

Theory of Operation Control Strategy 2 2-7 Vent Procedure The vent mode is implemented with a fast multi-step procedure. For gauge instruments, t

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 2-8 The outer loop is a lower frequency response, analog-digital loop. The outer loop uses a calib

Theory of Operation Transducer Module 2 2-9 0 5 10 15 20 25Time - secondsPressure gkn054.eps Figure 2-5. Pressure Control Transducer Module Quart

7250 – Change Language Hold key for 5 seconds mode enter gkn001.eps

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 2-10 FUSED QUARTZ BOURDON TUBEAXIS OF ROTATIONMIRRORTORSION HINGEFLEXUREPERMANENT MAGNETELECTROMAG

Theory of Operation Software 2 2-11 where again P is pressure and a, b, and c are coefficients generated during the calibration procedure as disc

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 2-12 thermally stable by viewing the Menu | Display screen and verifying that the temperature is a

Theory of Operation Software 2 2-13 HsZ Hardware zero correction. (0 to 4095, center is 2048). SsZ Zero corrections scaling factor. Ratio of Hi

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 2-14

3-1 Chapter 3 Installation Introduction This section of the manual discusses initial installation for the RUSKA 7250. Installing the Calibrator involv

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 3-2 Table 3-1. General Specifications and Parameters Parameter Value Model Operating Humidity 5–9

Installation Observing the Calibrator’s Full Scale Rating 3 3-3 Observing the Calibrator’s Full Scale Rating To observe the Calibrator’s full sca

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 3-4 Reference Port The reference port is open to atmosphere for gauge measurements or it can be co

Installation Pneumatic Connections 3 3-5 SUPPLYSEE USER'S MANUAL TOFAN IS NORMALLY OFF.TURN ON.NOTICE:EXHAUST TEST REFPOWER85-265 VAC50/60

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 3-6

4-1 Chapter 4 Local Operation Introduction This section of the manual describes operation of the RUSKA 7250 using the front panel. The local interface

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-2 Cancel, Previous These keys are used to stop, undo, or exit the current operation. The CANCEL

Local Operation Tutorial 4 4-3 Figure 4-2 is a menu tree showing the relationship between all the menus in the system. Refer to it for selection

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-4 gkn015.bmp Figure 4-4. Units Menu 2. Use the rotary knob located to the right of the display

Local Operation Tutorial 4 4-5 will appear below the scratch pad. Notice that the upper left corner still shows MEASURE. The Calibrator stays in

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-6 Simulated Absolute Instruments This RUSKA 7250 is a Gauge and Vacuum (Negative Gauge) instrume

Local Operation Controlling Pressure 4 4-7 gkn019.bmp Figure 4-8. Functions in Main Menu Note For Calibrators with pressure ranges greater than

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-8 Vent The Vent [F3] function is used to rapidly vent the pressure in the system to atmosphere.

Local Operation Menu 4 4-9 gkn020.bmp Figure 4-9. Configurations in Menu Menu | Setup Setup is used to configure the system. It includes setting

i Table of Contents Chapter Title Page 1 General Information ... 1-1 Int

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-10 gkn021.bmp Figure 4-11. Menu l Setup l Limits - Menu High Limit—User Defined Maximum Pressur

Local Operation Menu 4 4-11 the system due to thermal effects. However these thermal effects will stabilize over time. Once the system has therm

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-12 Slew Limit The slew limit is used by the system to assure that the slew rate is not exceeded.

Local Operation Menu 4 4-13 Ready Tolerance A Ready indication is generated when in control mode and the measured pressure is reading within this

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-14 Key Click The RUSKA 7250 can be configured to emit a “clicking” sound each time a key is pres

Local Operation Menu 4 4-15 gkn024.bmp Figure 4-14. Menu | Setup | Units | Edit Name - Menu Use the < [F4] or > [F5] key to highlight the

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-16 Protocol The Protocol defines which protocol should be used by the remote interface. The opti

Local Operation Menu 4 4-17 Menu | Calibrate The Menu | Calibrate command is used to perform the calibrations on all of the sensors utilized by t

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-18 vacuum sensors tend to increase at higher vacuum levels, therefore, the uncertainty in the Ca

Local Operation Menu 4 4-19 MaxTime The max time is the maximum time in seconds, including the dwell time, that the Calibrator can spend on one s

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual ii Standard Equipment and Options ...

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-20 gkn028.bmp Figure 4-18. Menu | Program | Edit - Menu 5. Using the numeric keypad, enter the

Local Operation Menu 4 4-21 gkn029.bmp Figure 4-19. Menu | Program | Edit | Auto - Menu 6. Using the numeric keypad, enter the values for Start

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-22 5. Use the < [F4] and > [F5] keys to highlight a character. 6. Turn the rotary knob t

Local Operation Menu 4 4-23 3. Press Config [F3]. The configuration screen will appear. 4. Press Recall [F2]. The Calibrator will be set to the

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-24 gkn033.bmp Figure 4-23. Menu l Program l Run - Menu 4. Press Run [F2]. The configuration of

Local Operation Menu 4 4-25 Menu | Test—Sweep Test The sweep function can be used to automatically exercise the elastic sensing element of the de

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-26 Menu | Test—Remote Test The Menu | Test | Remote section of the system is used to perform a n

Local Operation Menu 4 4-27 gkn038.bmp Figure 4-28. Menu | Test | Controller - Menu Menu | Display The Menu | Display is used to conveniently mo

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 4-28

5-1 Chapter 5 Remote Operation Capabilities The RUSKA 7250 can be operated remotely by a computer. Two interfaces are supported: IEEE-488 and RS-232.

Contents (continued) iii Vacuum Sensor—Option... 3-5 4 Local Operat

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 5-2 RS-232 The RS-232 interface supports standard serial operation from a computer to a single RUS

Remote Operation Device Messages 5 5-3 To configure the remote interface: 1. The remote interface is configured from the Setup | Remote | Menu.

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 5-4 ANSI/IEEE 488.2-1987 Command Summary *CLS Clear Status *ESE? Event Status Enable Query *

Remote Operation Device Messages 5 5-5 :DATE? Last zero date :TIME? Last zero time :PRESsure2 Case reference sensor :VALue<n> &

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 5-6 :ON <number> Set control on band :OVERshoot ON|OFF|1|0 Set Overshoot Mode LIST

Remote Operation Device Messages 5 5-7 To zero the unit via the remote interface use the following sequence: CAL:ZERO:INIT Enter Zero Mode CAL:Z

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 5-8 Standard Event Status Register (ESR), Standard Event Status Enable Register (ESE) Bit 7 Power

Remote Operation 6005 Interface Panel Emulation 5 5-9 6005 Interface Panel Emulation The RUSKA 7250 may be configured to emulate the IEEE-488 com

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 5-10 R0 Unlock keyboard R1,R2 Lock keyboard S0,S1,S2,S3 Set pre-programmed units

Remote Operation Sample Programs 5 5-11 Units Unit Number Unit Name RUSKA display units 1 Pa kPa 2 kPa kPa 3 Mpa kPa 4 mbar

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual iv Remote/Local Operation...

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 5-12 4, /* GPIB Address of 7010 */ NO_SAD,

Remote Operation Sample Programs 5 5-13 /*---------------------------------*/ /* Check for GPIB Interface Errors */ /*------------------

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 5-14 device = ibdev (0, /* First GPIB Board */ 4,

Remote Operation Sample Programs 5 5-15 gotoxy (20, 7); if (rstat == 0) cprintf ("Stable"); else if (rstat

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 5-16 ibwrt (device, s, strlen (s)); } /*-------------------------------------------------------

Remote Operation Sample Programs 5 5-17 /* PRES:TOL 0.001 Set control tolerance to 0.001 %FS */ /* OUTP:MODE CONTROL Enter con

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 5-18 } /*--------------------------------------------------------------------*/ /* serial_int : re

Remote Operation Sample Programs 5 5-19 ; outportb (portbase, ch); } /*-----------------------------------------------------------------

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 5-20

6-1 Chapter 6 Maintenance Introduction Very little maintenance is required for the RUSKA 7250. This section of the manual discusses suggested maintena

Contents (continued) v Cleaning... 6-1

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 6-2 3. Press Electrical [F1]. The electronics self test will run and display the results. 4. Pre

Maintenance Calibration 6 6-3 Vacuum Pumps Periodic checks of the user’s vacuum pumps for oil levels. It is very highly recommended that a power-

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 6-4 Note The uncertainty of the final calibration must include the uncertainty of the pressure sta

Maintenance Calibration 6 6-5 Step 1 1. The zero procedure will start when the reading is in-range and stable or when OK [F6] is pressed. Press

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 6-6 3. Using your calibration standard, generate the pressure shown in the Apply column. When th

Maintenance Calibration 6 6-7 Vacuum (Negative Gauge) Calibrations Vacuum mode is an available option. The following configuration should be used

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 6-8 3. If desired, change the Calibrator’s units of measure (see Chapter 4) to match those of the

Maintenance Calibration 6 6-9 7. You will use the calibration standard to apply the two vacuum points on the vacuum sensor. 8. The Actual va

RUSKA 7250, 7250i, 7250xi & 7250LP Users Manual 6-10 6. Use the numeric keypad and the ENTER key to enter a new value. To correct a mistake in t

Maintenance Calibration 6 6-11 gkn043.bmp Figure 6-4. Zeroing Menu 4. Do not disturb the instrument while zeroing is in process. 5. Wait for t