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Sensing

DewPro® MMY30

General Eastern Trace Moisture Transmitter

User’s Manual

Содержание DewPro MMY30

Страница 1: ...GE Sensing DewPro MMY30 General Eastern Trace Moisture Transmitter User s Manual ...

Страница 2: ...0 General Eastern Trace Moisture Transmitter User s Manual A40251540A November 2005 DewPro is a GE General Eastern product GE General Eastern has joined other GE high technology sensing businesses under a new name GE Sensing ...

Страница 3: ...ties arising from course of dealing or usage or trade Return Policy If a GE Infrastructure Sensing Inc instrument malfunctions within the warranty period the following procedure must be completed 1 Notify GE Infrastructure Sensing Inc 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 servi...

Страница 4: ...elines General Hints 2 1 Method I Orifice at Outlet 2 2 Pressure Dewpoint 2 2 Air Flow 2 2 Method II Orifice at Inlet 2 3 Method III No Flow Restriction 2 3 Low Pressure Closed Loop 2 3 Method IV Bypass Installation 2 4 Remote Installation 2 4 Chapter 3 Wiring Instructions General Guidelines 3 1 System Configuration 3 1 Various Power Supplies 3 1 Designing the Loop 3 1 Mounting in Normal Environme...

Страница 5: ...ions 5 1 Removing the Filter 5 1 Chapter 6 Technical Specifications MMY30 Specifications 6 1 Sensing Element 6 1 Measurement Range 6 1 Recommended Recalibration Cycle 6 1 Calibration Accuracy 6 1 Maximum Sensor Relative Humidity 6 1 Operating and Storage Temperature 6 1 Air Bleed Off at 7 bar 100 psig 6 1 Maximum Operating Pressure 6 1 Helium Leak Rate 6 1 Output 6 1 Flow Block 6 1 Wrench Width fo...

Страница 6: ...Chapter 1 ...

Страница 7: ...General System Information Unpacking and Inspection 1 1 Introduction 1 3 Theory of Operation 1 4 Dimensions 1 5 ...

Страница 8: ...ld contain DewPro MMY30 Installation and Operation Manual Calibration Certificate Compare the last five numbers or letters on the model number on the product label shown in Figure 1 1 below with the product structure see below to ensure you have received everything you ordered Figure 1 1 DewPro MMY30 Product Structure Certification Approvals R Standard not certified A FM IS C1 I II III Div 1 Grps ...

Страница 9: ...with cable gland 2 M20 X 1 5 F with 1 2 FNPT adaptor S Other Output Configuration Dewpoint Range A Td 90 C to 10 C 130 F to 50 F no display error 22 mA B Td 90 C to 10 C 130 F to 50 F no display error Hold C Td 90 C to 10 C 130 F to 50 F no display error 3 6 mA D 0 100 ppmv 1 bar no display error 22 mA E 0 100 ppmv 1 bar no display error Hold F 0 100 ppmv 1 bar no display error 3 6 mA G With integ...

Страница 10: ...mbly In most cases either the inlet or outlet port includes an orifice to regulate the flow The placement of this orifice determines whether the dew point measurement is done at process line pressure outlet orifice or at atmospheric pressure inlet orifice A 2 micron sintered inlet filter prevents particles from entering the device Optional Display User Interface The optional display user interface...

Страница 11: ...bypass The built in bypass of the DewPro eliminates costly hardware associated with traditional sampling methods The DewPro installs simply into the process with its G or MNPT threaded connection Planar Sensor The heart of the MMY30 is the planar sensor element It incorporates a superior aluminum oxide sensor that provides longer calibration stability excellent corrosion resistance and improved sp...

Страница 12: ...earance for the use of tools and for connection of the field validator Figure 1 3 shows the dimensions of the standard DewPro and Figure 1 4 shows the DewPro with the optional display user interface Figure 1 3 Standard DewPro Dimensions Figure 1 4 Dimensions for DewPro with Optional Display User Interface ...

Страница 13: ...Chapter 2 ...

Страница 14: ...Installation Guidelines General Hints 2 1 Method I Orifice at Outlet 2 2 Method II Orifice at Inlet 2 3 Method III No Flow Restriction 2 3 Method IV Bypass Installation 2 4 ...

Страница 15: ...pipe in case of maintenance or field compensation Caution Do not over tighten The outlet fitting is connected to the bypass block with a G 1 4 straight thread with gasket which will seal if the fitting is simply hand tightened When connecting an external device counter the fitting with a second wrench when tightening If the inlet is equipped with a G 1 2 straight thread and gasket the seal is obta...

Страница 16: ...the integral bypass with an orifice the sensor monitors the dewpoint at process pressure The bleed off air to the atmosphere at 7 to 8 bar 100 psig is approximately 70 cc min 28 L h or 1 0 SCFH cfh For smaller sized dryers of 3m3 min 100 cfm the air loss is only 0 002 of the air production and is negligible Despite the very low flow rate through the bypass as shown the air sample in the DewPro byp...

Страница 17: ...nstallation with No Flow Restriction Low Pressure Closed Loop Closed loop drying systems which are very common with hopper dryers in the plastics industry operate at very low pressures of a few inches of water The air passing through the DewPro bypass is fed back to the main stream after a pressure drop in the main line In this configuration the DewPro bypass has no flow restriction at the inlet a...

Страница 18: ... mounting the DewPro at a remote location The functions of Methods I III can be selected The DewPro can be mounted on a wall or a plate using the optional wall pipe mounting bracket as shown in Figure 2 5 below Figure 2 5 DewPro with Various Mounting Brackets 6 50 in 165 mm 2 76 in 70 mm 4 45 in 113 mm 3 23 in 82 mm 4 45 in 113 mm 2 76 in 70 mm 0 79 in 20 mm 4 45 in 113 mm Panel Mounting Vertical ...

Страница 19: ...Chapter 3 ...

Страница 20: ...g Instructions General Guidelines 3 1 System Configuration 3 1 Mounting in Normal Environments 3 2 Mounting in Environments with Severe Electrical Noise 3 2 Electrical Connection 3 3 General Instructions 3 3 ...

Страница 21: ... 1 Power Supplies Displays for MMY30 Designing the Loop When selecting a power supply please note that the voltage at the terminal of the DewPro should not fall below 12 VDC The maximum loop resistance is an important measure for selection of the supply voltage Each device connected to the loop causes a voltage drop For instance using a loop powered display with an input impedance of 50 Ω will cau...

Страница 22: ...2 DewPro Interconnections Mounting in Environments with Severe Electrical Noise EMI RFI The DewPro MMY30 meets the EMC requirements of IEC 61326 for equipment used in industrial locations The MMY30 passed all tests to the standards IEC 61000 4 to the performance criterion A Test details can be found in Chapter 6 Specifications Figure 3 3 DewPro Mounted in Environment with Severe Electrical Noise T...

Страница 23: ...land to meet IP 67 and to relieve any stress on the wire 5 Verify that a voltage between 12 and 28 VDC is across the terminals marked and Note This is the voltage that appears across the DewPro terminals not necessarily the power supply voltage due to voltage loss in wire length displays indicators etc 6 In order to meet EMI RFI immunity a two wire shielded cable with a common foil shield layer is...

Страница 24: ...Chapter 4 ...

Страница 25: ...The Optional Display User Interface Option G Installation 4 1 Description of the DewPro MMY30 Programming Matrix 4 2 Special Functions of the Push Buttons 4 3 Functions of the Matrix 4 3 ...

Страница 26: ... with Display Assembly 1 Unscrew and remove the protective lid from the top of the DewPro as shown in Figure 4 1 above exposing the display module below The buttons V H and are now accessible Replacing the Display 2 The display unit snaps onto the printed circuit board resting on four posts When removing the display push one post to the outside using a small screwdriver and pull the display out 3 ...

Страница 27: ...isplay of the DewPro MMY30 continuously shows the current matrix location using the vertical V and horizontal H coordinates to designate the row and column respectively The bar graph represents the output current in an analog fashion refer to Figure 4 2 above See Appendix A for an enlarged overview of the matrix with all possible options shown in Table 4 1 below Table 4 1 Matrix Input for Programm...

Страница 28: ...changed by the user refer to Table 4 1 on the previous page or Appendix A The display only fields are as follows VH 00 normal display in dewpoint C VH 90 during a system alarm displays the error code for the fault encountered VH 91 during normal operation the previous error code is displayed for reference VH 92 displays the factory issued identification number VH 93 displays the factory issued ref...

Страница 29: ...er VH 01 Location in Matrix Description of Function VH 01 Selects units to be displayed Changing from C to F does not change the current loop Changing from dew point to ppmv does change the current loop Note When switching to ppmv the display may indicate an error 3 if the dewpoint reading is above 20 C For example the DewPro is exposed to ambi ent air Location in Matrix Description of Function VH...

Страница 30: ...ction VH 30 The process pressure constant is entered in bar abso lute which is used to calculate ppmv The moisture unit ppmv is the ratio of water vapor pressure to the total process pressure and is therefore independent of the process pressure The reason is that when com pressing a gas process pressure all partial pressures increase by the same factor Dalton s Law The gold aluminum oxide sensor i...

Страница 31: ...ed by entering 50 into this field Location in Matrix Description of Function VH 39 Selection of this field assists during calibration gener ating a nominal 20 mA signal but the actual value must be 21 92 mA an over range to a dewpoint of 22 C By connecting an ammeter in the loop the cor rect current 21 92 mA can be adjusted by increasing or decreasing the displayed digits Note If the matrix input ...

Страница 32: ...t has exceeded the 21 92 mA level 3 The instrument is no longer reading between 90 and 20 C dewpoint while in ppmv mode and has fallen off of the internal vapor pres sure table 4 ppmv overrange The current output has exceeded the 20 mA level Re range the ppmv upper scaling limit in V1H2 to keep this error from occurring 5 Sensor is shorted 6 Sensor is open Location in Matrix Description of Functio...

Страница 33: ...tion VH 93 This field indicates the software version i e version 2 02 or higher Location in Matrix Description of Function VH 94 This field sets all factory defaults Note Anything that has been calibrated will not be reset Location in Matrix Description of Function VH 99 The device is reset in this field by entering 50 Note Reset the device only after field calibration using the MMY 245 validator ...

Страница 34: ...Chapter 5 ...

Страница 35: ...Troubleshooting Problems and Recommended Solutions 5 1 Removing the Filter 5 1 ...

Страница 36: ...several minutes If the error remains the cause may be a defective sensor assembly or an electronics malfunction Consult the factory Problem There is no current Solution Check the voltage and polarity across terminals with a DC voltmeter If the voltage is within 12 28 VDC consult the factory Problem The response time is very slow Solution Verify the flow with an air flowmeter If the orifice is at t...

Страница 37: ...Chapter 6 ...

Страница 38: ...Technical Specifications MMY30 Specifications 6 1 Optional Onboard Display with User Interface 6 2 ...

Страница 39: ...mperatures 0 C 32 F Operating and Storage Temperature 40 C to 50 C 40 F to 122 F Air Bleed Off at 7 bar 100 psig Approximately 28 sl h 1 SCFH Maximum Operating Pressure 31 bar 3 1 MPa 450 psig Helium Leak Rate 10 6 mbar l s Output 4 to 20 mA 16 µA resolution Flow Block 316 stainless steel with G thread DIN ISO 228 or 12 7 mm MNPT thread Wrench Width for Flow Block 42 mm 1 5 8 Electronics Microcont...

Страница 40: ...per CISPR 11 Class A 2004 2 Radiated Emission Test as per CISPR 11 Class A 2004 3 Radiated Susceptibility Test as per IEC 61000 4 3 2002 4 Electrostatic Discharge Test as per IEC 61000 4 2 2001 5 Electrical Fast Transient Test as per IEC 61000 4 4 2004 6 High Energy Surge Immunity Test as per IEC 61000 4 5 2001 7 Power Frequency Magnetic Field Test as per IEC 61000 4 8 2001 EMC IEC 61326 Industria...

Страница 41: ...Appendix A ...

Страница 42: ...User Interface Matrix Input ...

Страница 43: ...elect Devices Unit 0 C 1 F 35 ppmv Loop 1 at Fault 0 10 1 110 2 Hold V1 Dewpoint C 4 mA Dewpoint C 20 mA ppmv 20 mA V2 V3 Pressure ppmv Constant bar Output D A Cal 4 mA Output D A Cal 20 mA V4 V5 V6 V7 V8 V9 Current Error Code Previous Error Code Device ID Software Version Set to Default Values 50 Set Default Reset Device 50 Reset After Calibration ...

Страница 44: ...hich this declaration relates are in conformity with the following standards EN 61326 1997 A1 A2 following the provisions of the 89 336 EEC EMC Directive The units listed above and any sensors and ancillary sample handling systems supplied with them do not bear CE marking for the Pressure Equipment Directive as they are supplied in accordance with Article 3 Section 3 sound engineering practices an...

Страница 45: ...vec les documents suivants EN 61326 1997 A1 A2 suivant les régles de la Directive de Compatibilité Electromagnétique 89 336 EEC Les matériels listés ci dessus ainsi que les capteurs et les systèmes d échantillonnages pouvant être livrés avec ne portent pas le marquage CE de la directive des équipements sous pression car ils sont fournis en accord avec la directive 97 23 EC des équipements sous pre...

Страница 46: ...01 High Temperature Moisture Transmitter folgende Normen erfüllen EN 61326 1997 A1 A2 gemäß den Europäischen Richtlinien EMV Richtlinie Nr 89 336 EG Die oben aufgeführten Geräte und zugehörige mitgelieferte Sensoren und Handhabungssysteme tragen keine CE Kennzeichnung gemäß der Druckgeräte Richtlinie da sie in Übereinstimmung mit Artikel 3 Absatz 3 gute Ingenieurpraxis der Druckgeräte Richtlinie 9...

Страница 47: ...USA 1100 Technology Park Drive Billerica MA 01821 4111 Web www gesensing com Ireland Shannon Industrial Estate Shannon County Clare Ireland ...

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