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GE MG-101, User Manual

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Summary of Contents for MG-101

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

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Page 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 ...

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

Page 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...

Page 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...

Page 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 ...

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

Page 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...

Page 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...

Page 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...

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

Page 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...

Page 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 ...

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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...

Page 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...

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

Page 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 ...

Page 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 ...

Page 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...

Page 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...

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Page 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...

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

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Page 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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