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Instruction Manual 

InstruTech CVM-211 "

Stinger

" Convection Vacuum Gauge Module

 

 

 

 

 

InstruTech, Inc 

 page 15  

 

 

 

 

Table 2 - Log-Linear Analog Output Voltage vs Pressure, for Selected Gases 

The following Stinger part numbers ending with the letter “L” provide a Non-Linear Analog output: 

CVM211GA

L

,CVM211GB

L

 to…CVM211GH

L

.

 

True 

Pressure 

(Torr)

N2

Ar

He

O2

CO2

Kr

Freon12 Freon22

D2

Ne

CH4

0.0001

1.000

1.000

1.000

1.000

1.000

1.000

1.000

1.000

1.000

1.000

1.000

0.0002

1.301

1.301

1.301

1.301

1.301

1.301

1.301

1.301

1.301

1.301

1.301

0.0005

1.699

1.699

1.699

1.699

1.699

1.477

1.699

1.699

1.699

1.699

1.699

0.0010

2.000

1.845

1.903

2.000

2.041

1.602

2.176

2.176

2.114

1.845

2.230

0.0020

2.301

2.146

2.204

2.301

2.362

2.000

2.491

2.491

2.380

2.176

2.519

0.0050

2.699

2.519

2.602

2.699

2.643

2.362

2.881

2.845

2.778

2.544

2.886

0.0100

3.000

2.820

2.908

2.987

3.041

2.681

3.167

3.130

3.083

2.851

3.185

0.0200

3.301

3.117

3.207

3.297

3.346

2.978

3.476

3.435

3.386

3.149

3.483

0.0500

3.699

3.511

3.607

3.692

3.740

3.371

3.860

3.839

3.778

3.542

3.888

0.1000

4.000

3.808

3.914

3.988

4.029

3.670

4.155

4.134

4.083

3.845

4.201

0.2000

4.301

4.100

4.217

4.288

4.322

3.960

4.439

4.418

4.398

4.149

4.498

0.5000

4.699

4.494

4.638

4.687

4.689

4.336

4.786

4.774

4.837

4.555

4.893

1.0000

5.000

4.778

4.973

4.987

4.978

4.602

5.021

5.017

5.190

4.872

5.204

2.0000

5.301

5.057

5.346

5.288

5.233

4.845

5.210

5.220

5.616

5.201

5.522

5.0000

5.699

5.389

6.130

5.697

5.524

5.107

5.389

5.418

7.391

5.719

5.877

10.0000

6.000

5.602

8.041

6.013

5.696

5.250

5.471

5.530

8.041

6.332

6.446

20.0000

6.301

5.763

8.041

6.348

5.819

5.360

5.521

5.571

8.041

7.766

7.550

50.0000

6.699

5.895

8.041

6.890

5.915

5.410

5.579

5.617

8.041

8.041

7.925

100.0000

7.000

5.946

8.041

7.320

5.966

5.438

5.670

5.691

8.041

8.041

8.041

200.0000

7.301

5.991

8.041

7.470

6.090

5.521

5.777

5.808

8.041

8.041

8.041

300.0000

7.477

6.053

8.041

7.580

6.228

5.555

5.838

5.876

8.041

8.041

8.041

400.0000

7.602

6.130

8.041

7.686

6.350

5.595

5.883

5.925

8.041

8.041

8.041

500.0000

7.699

6.207

8.041

7.781

6.458

5.624

5.918

5.964

8.041

8.041

8.041

600.0000

7.778

6.274

8.041

7.863

6.561

5.647

5.947

5.998

8.041

8.041

8.041

700.0000

7.845

6.338

8.041

7.934

6.664

5.667

5.974

6.029

8.041

8.041

8.041

760.0000

7.881

6.375

8.041

7.974

6.732

5.677

5.989

6.045

8.041

8.041

8.041

800.0000

7.903

6.400

8.041

7.999

6.774

5.685

5.998

6.057

8.041

8.041

8.041

900.0000

7.954

6.455

8.041

8.041

6.900

5.698

6.021

6.079

8.041

8.041

8.041

1000.0000

8.000

6.512

8.041

8.041

7.045

5.706

6.045

6.104

8.041

8.041

8.041

 

 

 

The log-linear output signal and pressure are related by the following formulas: 

P = 10

(V - 5)

 

V = log

10

(P) + 5

 

where P is the pressure in Torr, and V is the output signal in Volts. 
 
The chart on the following page shows the graphical results of the table and formulas above.  Pressure is plotted 
on the X-axis with a log scale; the output signal is plotted on the Y-axis on a linear scale. 

 

 
 
 
 
 
 

Содержание CVM211

Страница 1: ...11 S ST TI IN NG GE ER R Convection Vacuum Gauge Module User s Manual Revision 1 05 Sept 25 2007 1475 S Fordham St Longmont CO 80503 Phone 303 651 0551 Fax 303 678 1754 E mail info instrutechinc com w...

Страница 2: ...4 Gases other than N2 5 Flammable Explosive Gases 5 Installation Mechanical 5 Position 5 Vibrations 5 Fittings 5 Electrical 6 Connector Pinouts 6 Setup Operation User Interface Basics 7 Setting up th...

Страница 3: ...Torr to 1 0 mTorr 1 digit LED from 0 9 mTorr to 0 1 mTorr materials exposed to gases gold plated tungsten 304 316 stainless steel glass nickel Teflon internal volume 26 cm3 1 589 in 3 internal surface...

Страница 4: ...parts are specified by Instrutech Inc Unauthorized substitutions or non qualified parts may result in fire electric shock or other hazards To reduce the risk of fire or electric shock do not expose t...

Страница 5: ...ure difference error between your process and the gauge and cause a delay in response to pressure changes Mounting the CVM too close to a gas source will also cause errors in the readings Don t mount...

Страница 6: ...practice is to remove power from any cable prior to connecting or disconnecting it The InstruTech CVM 211 will directly replace GP Mini Convectron modules that have a 9 pin D connector and you can us...

Страница 7: ...to save and go to the next step 6 The readout will display 000 to indicate the unit is in the zero adjust mode To properly set zero the gauge must be evacuated to a pressure below 10 4 Torr Factory de...

Страница 8: ...il due to chemical reaction are generally not salvageable Sensors that fail due to coating may possibly be restored by cleaning See Appendix C for a more complete discussion of contamination and clean...

Страница 9: ...hrough Friday at 303 651 0551 Or e mail us at info instrutechinc com If it becomes necessary to return the unit to InstruTech for service or calibration please call or e mail us for a return authoriza...

Страница 10: ...ceed to next step without changing the zero value press select Readout displays current span value Factory default 760 Torr Is system backfilled with air or N2 to some known pressure above 400 Torr Or...

Страница 11: ...of 0 375 to 5 659 VDC for 0 to 1000 Torr of N2 roughly in the shape of an S curve as shown at right GP adopted the same output curve for most of their Mini Convectron modules and controllers with non...

Страница 12: ...r as thermal conductivity goes but even these two gases will exhibit slight differences in readings at higher pressures For example when venting a system to atmosphere using N2 you may see readings ch...

Страница 13: ...essure is 100 Torr the gauge will read 100 Torr If the gas is Ar when the true pressure is 100 Torr the gauge will read only 10 Torr If you are backfilling your vacuum system with Ar when your system...

Страница 14: ...70 1 3150 1 2910 1 2650 1 0020 1 3920 500 mTorr 1 6833 1 3860 1 5890 1 6640 1 6680 1 1940 1 8260 1 8050 1 9140 1 4690 2 0140 1 Torr 2 2168 1 8180 2 1640 2 1950 2 1720 1 5360 2 2570 2 2470 2 6030 1 976...

Страница 15: ...288 5 233 4 845 5 210 5 220 5 616 5 201 5 522 5 0000 5 699 5 389 6 130 5 697 5 524 5 107 5 389 5 418 7 391 5 719 5 877 10 0000 6 000 5 602 8 041 6 013 5 696 5 250 5 471 5 530 8 041 6 332 6 446 20 0000...

Страница 16: ...auge Module InstruTech Inc page 16 Log Linear Analog Output Voltage vs Pressure 0 1 2 3 4 5 6 7 8 9 0 0001 0 001 0 01 0 1 1 10 100 1000 Pressure Torr Output Signal Volts This is a plot of the formulas...

Страница 17: ...87 359 781 1 Torr 1 00 600 940 970 950 400 1 05 1 04 1 55 745 1 60 2 Torr 2 00 1 14 2 22 1 94 1 71 700 1 62 1 66 4 13 1 59 3 33 5 Torr 5 00 2 45 13 5 4 98 3 34 1 28 2 45 2 62 246 5 24 7 53 10 Torr 10...

Страница 18: ...s steel or ceramic to the gases There is no material that is universally chemical resistant your choice of vacuum gauge as well as all other vacuum components should take into consideration the potent...

Страница 19: ...s such as pump oil However depending on your particular contamination you may need to use a more aggressive solvent Cleaning procedure 1 With the gauge port up pour your cleaning solution into the gau...

Страница 20: ...Furthermore the warranty does not apply to products that have been contaminated or when the product or part is damaged during the warranty period due to causes other than ordinary wear and tear to th...

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