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GE MG-101, Руководство пользователя

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MG-101 User’s Manual

3

Chapter 1. General Information

1.3 Initial Considerations

This section presents some general guidelines to ensure accurate results with the MG-101.

1.3.1 Operating Range

While the driest dew/frost point temperature capability 

specified

 for the MG-101 is -75°C (-103°F), the actual limit is 

determined by the moisture content of the dry nitrogen source and by the ambient temperature.

The 

driest

 dew/frost point temperature the MG-101 can produce is the dew/frost point temperature of the dry nitrogen 

source plus 25°C (45°F). If dry nitrogen of this quality is not available, please contact GE Sensing for assistance. The 

wettest

 dew/frost point temperature that can be generated is determined by the ambient temperature, and it must be at 

least 10°C (18°F) below the ambient temperature.

1.3.2 Operating Environment

The MG-101 is designed to be used indoors or in an environment where ambient temperature changes are not extreme 
and where the instrument will not be subject to dramatic heating or cooling. It is important to ensure that the 
temperature of the calibrator and especially the saturator bottle will not change between the beginning and the end of 
the calibration cycle.

IMPORTANT:

Changes in the saturator bottle temperature after the calibration parameters have been established will 
cause errors in the generated dew/frost point temperature.

CAUTION!

The MG-101 can be damaged by freezing. Do not operate it in freezing temperatures.

1.3.3 Operating Requirements

You will need the following additional equipment to set up and operate the MG-101 calibrator:

•

Nitrogen, preferably from a liquid source

Note:

Nitrogen gas cylinders may be used, but the supply gas must be at least 25°C (45°F) drier than the driest 
dew/frost point temperature to be generated. Two nitrogen cylinders connected in parallel and plumbed to the 
inlet of the MG-101, will increase the stability of the gas supply.

•

Stainless steel pressure regulator to set the inlet pressure to 55 psig

•

1/4” OD stainless steel tubing

•

An appropriate test chamber

Note:

GE Sensing 

Sample Cell #2830

 is preferred for M2 Type probes

•

A hygrometer to monitor the moisture sensor for either:

•

the dew/frost point reading, if simply verifying the moisture sensor performance, or

•

the sensor output signal, if generating a new calibration curve

Note:

The hygrometer used for the calibration can be either a dedicated instrument for use only with the moisture 
generator or the process instrument that will be used with the recalibrated sensor after the calibration is 
completed.

Содержание MG-101

Страница 1: ...GE Measurement Control Moisture 910 115 Rev E March 2012 MG 101 User s Manual ...

Страница 2: ......

Страница 3: ...cs com 2012 General Electric Company All rights reserved Technical content subject to change without notice GE Measurement Control MG 101 Field Moisture Calibration System User s Manual 910 115 Rev E March 2012 ...

Страница 4: ...ii no content intended for this page ...

Страница 5: ...ch installation Auxiliary Equipment Local Safety Standards The user must make sure that he operates all auxiliary equipment in accordance with local codes standards regulations or laws applicable to safety Working Area WARNING Auxiliary equipment may have both manual and automatic modes of operation As equipment can move suddenly and without warning do not enter the work cell of this equipment dur...

Страница 6: ...t In order to avoid the dissemination of those substances in our environment and to diminish the pressure on the natural resources we encourage you to use the appropriate take back systems Those systems will reuse or recycle most of the materials of your end life equipment in a sound way The crossed out wheeled bin symbol invites you to use those systems If you need more information on the collect...

Страница 7: ... Chapter 2 Setup and Operation 2 1 Preliminary Setup 5 2 2 Operating Procedure 8 2 2 1 Calibrating the Moisture Samples 10 2 2 2 Using Data Table 3 11 2 2 3 Using Data Table 2 12 2 2 4 System Shutdown 12 2 2 5 Preparation for Shipping 13 Chapter 3 Specifications 3 1 Performance Specifications 15 3 2 Operating Specifications 15 3 3 Physical Specifications 15 Appendix A Supplemental Information A 1 ...

Страница 8: ...Contents vi MG 101 User s Manual no content intended for this page ...

Страница 9: ...bes the MG 101 can be used for any application requiring accurate and repeatable moisture samples 1 2 Theory Of Operation Precise moisture concentrations are generated by passing dry nitrogen through a water saturator and mixing the resulting saturated stream with a dry nitrogen stream from the same source for a first dilution This resulting first dilution is then further diluted in a second mixin...

Страница 10: ...ixed with stream D the dry gas second dilution to generate the desired output mixture stream F Obtaining an accurate output mixture requires careful adjustment of the rotameter valves as described in Setup and Operation on page 5 Calibration of all rotameters and the thermometer is traceable to NIST standards Note The rotameter scales are used in later steps to reference a lookup table By themselv...

Страница 11: ...end of the calibration cycle IMPORTANT Changes in the saturator bottle temperature after the calibration parameters have been established will cause errors in the generated dew frost point temperature CAUTION The MG 101 can be damaged by freezing Do not operate it in freezing temperatures 1 3 3 Operating Requirements You will need the following additional equipment to set up and operate the MG 101...

Страница 12: ...Chapter 1 General Information 4 MG 101 User s Manual no content intended for this page ...

Страница 13: ...e the back panel by removing the two small screws at the bottom see Figure 2 below 2 Fill the supplied plastic squeeze bottle with distilled not deionized water and connect it to the fill tubing at the bottom of the saturator bottle see Figure 2 below This length of plastic tubing should be left permanently attached to the fitting at the bottom of the saturator bottle Figure 2 MG 101 Rear View wit...

Страница 14: ... it counter clockwise and turn the WET DRY SELECTOR VALVE to WET see Figure 3 below 5 Using the squeeze bottle fill the saturator bottle until the water level reaches the fill mark on the bottle see Figure 2 on page 5 6 Close the petcock and reinstall the back panel Figure 3 MG 101 Front Panel Vent Valve Wet Dry Selection Valve Inlet Fitting Outlet Fitting ...

Страница 15: ...using 1 4 OD SS tubing Then leak test the connection Note GE Sensing Sample Cell 2830 is the preferred calibration chamber for M2 Type probes 9 At the outlet of the calibration chamber connect at least 5 ft 1 5 m of 1 4 OD tubing as a vent to atmosphere The tubing may be coiled to save space 10 Insert the sensor to be calibrated into the calibration chamber and tighten it sufficiently to ensure a ...

Страница 16: ...til the WET GAS flowmeter valve is closed 3 Set the pressure regulator on the nitrogen gas inlet line to approximately 55 psig 4 Make sure the vent valve at the top of the front panel is fully open 5 Fully open the valve on the WET GAS DILUTED rotameter Note The rotameters are dual range floating ball types each having both a steel ball and a glass ball When reading the rotameters be careful to wa...

Страница 17: ...ore proceeding 8 Allow the nitrogen to purge through the entire system at the rotameter settings defined in the previous steps The calibration system will begin to dry down and eventually come to equilibrium with the dry nitrogen supply gas The time required to achieve equilibrium will vary depending on the moisture level of the nitrogen approximately 6 to 18 hours will be required 9 After the cal...

Страница 18: ... calibration point you wish to generate look at Data Tables 2 and 3 supplied with the MG 101 Above the line which reads Generated Dew Points Deg C is a row of values headed Ambient Temperature Deg C Find the column corresponding as closely as possible to the temperature measured in Step 1 above and read down the column of dew frost points dew points in the table below this temperature heading Note...

Страница 19: ...sponding value in the column headed WET GAS Adjust the WET GAS valve to obtain the value indicated in the table 4 By referring to the desired dew frost point temperature in Data Table 3 find the corresponding value in the column headed WET GAS DILUTED Adjust the vent valve but not the valve on the WET GAS DILUTED rotameter which must remain fully open to obtain the value indicated in Data Table 3 ...

Страница 20: ...n either the column headed WET GAS or the column headed WET GAS DILUTED a given value appears in one column or the other but not both Adjust the valve on the WET GAS rotameter but not on the Wet Gas Diluted rotameter which must remain fully open to obtain the reading indicated on either the WET GAS or the WET GAS DILUTED rotameter scales whichever is indicated in the table IMPORTANT Be sure to rea...

Страница 21: ...moving the two small screws at the bottom 2 Fully open the vent valve by turning it counter clockwise 3 Place the end of the fill tubing in a container below the level of the saturator bottle and open the petcock 4 When the saturator bottle is completely empty close the petcock and the vent valve and reinstall the rear panel Figure 7 Emptying the Saturator Bottle Saturator Bottle Fill Tubing Petco...

Страница 22: ...Chapter 2 Setup and Operation 14 MG 101 User s Manual no content intended for this page ...

Страница 23: ...w Frost Point Temperature Range 75 C 103 F up to 10 C 18 F below ambient temperature Accuracy 1 C 1 8 F Inlet Gas Supply Must be a minimum of 25 C 45 F drier than the driest sample to be generated Flow Rate 9 2 liters minute 19 6 SCFH maximum Inlet Pressure 55 60 psig Outlet Pressure Ambient pressure Power Requirements None Dimensions W x H x D 12 x 18 x 6 304 8 mm x 457 2 mm x 152 4 mm Inlet and ...

Страница 24: ...Chapter 3 Specifications 16 MG 101 User s Manual 3 3 Physical Specifications cont Figure 8 MG 101 Moisture Generator Outline Dimensions 18 00 457 mm 12 00 305 mm ...

Страница 25: ...uation 1 above simplifies to 2 The value of Ps and the dew point from the calculated value pw are determined from a chart of vapor pressure of water as a function of temperature see Table 1 on page 19 Equation 1 above produces an error of less than 2 C 3 6 F dew frost point temperature at the lowest generated dew frost point temperatures and virtually no error at higher dew frost point temperature...

Страница 26: ... those listed in Data Table 2 Equation 2 on the previous page must be used as shown in the following example If Dry Gas first dilution flowmeter setting Fd1 4 500 cc min Dry Gas second dilution flowmeter setting Fd 4 500 cc min Wet Gas flowmeter setting 20 cc min Fw1 140 cc min Wet Gas diluted flowmeter setting Fw 347 cc min Thermometer reading T 20 C and Ps 17 535 mm Hg at 20 C from Table 1 on pa...

Страница 27: ... 292 28 0 351 0 344 0 337 0 330 0 324 27 0 389 0 381 0 374 0 366 0 359 26 0 430 0 422 0 414 0 405 0 397 25 0 476 0 467 0 457 0 448 0 439 24 0 526 0 515 0 505 0 495 0 486 23 0 580 0 569 0 558 0 547 0 536 22 0 640 0 627 0 615 0 603 0 592 21 0 705 0 691 0 678 0 665 0 652 20 0 776 0 761 0 747 0 733 0 719 19 0 854 0 838 0 822 0 806 0 791 18 0 939 0 921 0 904 0 887 0 870 17 1 031 1 012 0 993 0 975 0 956...

Страница 28: ...5 477 15 673 15 871 16 071 16 272 19 16 477 16 685 16 894 17 105 17 319 20 17 535 17 753 17 974 18 197 18 422 21 18 650 18 880 19 113 19 349 19 587 22 19 827 20 070 20 316 20 565 20 815 23 21 068 21 324 21 583 21 845 22 110 24 22 377 22 648 22 922 23 198 23 476 25 23 756 24 039 24 326 24 617 24 912 26 25 209 25 509 25 812 26 117 26 426 27 26 739 27 055 27 374 27 696 28 021 28 28 349 28 680 29 015 ...

Страница 29: ...143 90 145 20 146 60 148 00 60 149 38 150 70 152 10 153 50 155 00 61 156 43 157 80 159 30 160 80 162 30 62 163 77 165 20 166 80 168 30 169 80 63 171 38 172 90 174 50 176 10 177 70 64 179 31 180 90 182 50 184 20 185 80 65 187 54 189 20 190 90 192 60 194 30 66 196 09 197 80 199 50 201 30 203 10 67 204 96 206 80 208 60 210 50 212 30 68 214 17 216 00 218 00 219 90 221 80 69 223 73 225 70 227 70 229 70...

Страница 30: ...10 510 00 513 90 517 80 521 80 90 525 76 529 77 533 80 537 86 541 95 91 546 05 550 18 554 35 558 53 562 75 92 566 99 571 26 575 55 579 87 584 22 93 588 60 593 00 597 43 601 89 606 38 94 610 90 615 44 620 01 624 61 629 24 95 633 90 638 59 643 30 648 05 652 82 96 657 62 662 45 667 31 672 20 677 12 97 682 07 687 04 692 05 697 10 702 17 98 707 27 712 40 717 56 722 75 727 98 99 733 24 738 53 743 85 749...

Страница 31: ...urpose and warranties arising from course of dealing or usage or trade Return Policy If a GE Sensing instrument malfunctions within the warranty period the following procedure must be completed 1 Notify GE Sensing giving full details of the problem and provide the model number and serial number of the instrument If the nature of the problem indicates the need for factory service GE Sensing will is...

Страница 32: ...Warranty 24 MG 101 User s Manual no content intended for this page ...

Страница 33: ......

Страница 34: ...Certified Company www ge mcs com en about_us quality html Customer Support Centers U S A The Boston Center 1100 Technology Park Drive Billerica MA 01821 U S A Tel 800 833 9438 toll free 978 437 1000 E mail sensing ge com Ireland Sensing House Shannon Free Zone East Shannon County Clare Ireland Tel 353 0 61 470291 E mail gesensingsnnservices ge com ...

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