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Vaisala HUMICAP MMT310, Руководство пользователя

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Vaisala HUMICAP MMT310 Скачать руководство пользователя страница 47

Chapter 6 ______________________________________________________________ Maintenance 

VAISALA _______________________________________________________________________ 45 

CHAPTER 6 

MAINTENANCE 

Changing the filter and sensor 

1.

 

Unscrew the filter from the probe head.  

 
2.

 

Remove the damaged sensor and insert a new one. Handle the 
sensor by the plastic socket. DO NOT TOUCH THE SENSOR 
PLATE.  

3.

 

After sensor change the humidity calibration must be made 
according to the instructions, see command 

FCRH,

 page 29 .  

4.

 

Screw a new filter on the probe head. Take care to tighten the filter 
properly, recommended force 130 Ncm.  

 

New sensors and filters can be ordered from Vaisala, see list of 
accessories on page 51.  

 

Clean the sensor before storing the MMT318 
and MMT317  

Clean the used sensor with instrument air to blow out existing oil or 
gently first flush with heptane (C7H14 16) and dry with instrument air 
to prevent oxidation of the sensor. The oxidation of the sensor can 
cause extended response times or drifting. 

Factory calibration and repair service 

 
The MMT318 and MMT317 are fully calibrated as shipped from 
factory. The recommended calibration interval is 1 year. However, 
calibration shall be done always when there is a reason to believe that 

Содержание HUMICAP MMT310

Страница 1: ...USER S GUIDE Vaisala HUMICAP Moisture and Temperature Transmitter Series for Oil MMT310 M210474EN B...

Страница 2: ...echanical including photocopying nor may its contents be communicated to a third party without prior written permission of the copyright holder The contents are subject to change without prior notice...

Страница 3: ...emarks 5 License Agreement 5 Warranty 7 CHAPTER 2 PRODUCT OVERVIEW 9 Introduction to MMT318 and MMT317 9 CHAPTER 3 MOUNTING 11 Selecting a place for the probe 11 Mounting the transmitter Removing the...

Страница 4: ...adjustment in one point 38 Error states 40 Other commands 41 CHAPTER 6 MAINTENANCE 45 Changing the filter and sensor 45 Clean the sensor before storing the MMT318 and MMT317 45 Factory calibration and...

Страница 5: ...and maintaining MMT318 and MMT317 Version Information Table 1 Manual Revisions Manual Code Description M21047EN A MMT318 User s Guide M21047EN B MMT318 and MMT317 User s Guide The manual has been upda...

Страница 6: ...he chapter section and page number You can send comments to us by e mail manuals vaisala com Product Related Safety Precautions The MMT318 and MMT317 delivered to you has been tested for safety and ap...

Страница 7: ...art of the equipment chassis with your other hand before touching the boards Always hold the boards by the edges and avoid touching the component contacts Recycling Recycle all applicable material Dis...

Страница 8: ...________________________________________________________________ 6 ________________________________________________________________ M210474EN B provided by the applicable supply contract or Software L...

Страница 9: ...art shall should Vaisala so require be sent to the works of Vaisala or to such other place as Vaisala may indicate in writing freight and insurance prepaid and properly packed and labelled unless Vais...

Страница 10: ...USER S GUIDE____________________________________________________________________ 8 ___________________________________________________________________ M210474EN B...

Страница 11: ...turated with water Water is present in free form The water activity is used for alarming at the point of 0 9 aw where the risk for free water is obvious The most advanced feature which distinguishes t...

Страница 12: ...wers up with 24 VDC Output alternatives are analog outputs 0 4 20mA and RS232C serial line The transmitter measures and calculates the following quantities Quantity Metric Unit Non Metric Unit aw wate...

Страница 13: ...is installed directly in the process through the ball valve assembly When the ball valve assembly is used the pipe does not have to be emptied or shut down for installation or removal of the probe In...

Страница 14: ...llen screws The transmitter module can be unfastened for calibration by releasing two allen screws on the left side Mounting with bigger mounting plate Mounting with smaller mounting plate NOTE It is...

Страница 15: ...ocess The probe is especially suitable for the measurements in pipelines MMT318 pipe dimensions in mm standard 178 adjustment range 120 mm and optional 400 mm adjustment range 340 mm Adjust the probe...

Страница 16: ...kit Vaisala order code BALLVALVE 1 is preferred when connecting the probe to a pressurized process or pipeline Use the ball valve set or a 1 2 ball valve assembly with a ball hole of 14 mm or more If...

Страница 17: ...page 14 2 Open the ball valve assembly 3 Push the probe head through the ball valve assembly into the process If the pressure is high use a manual press handle Note that the sensor head must be pushe...

Страница 18: ...and may prevent it from going through the clasp nut CAUTION In pressurized processes it is essential to tighten the supporting nuts and screws very carefully to prevent loosening of the probe by the a...

Страница 19: ...ideal for tight spaces with threaded connection The small probe is installed using the threaded fitting bodies see below NOTE Do not unsolder and then again resolder the sensor head cable from and to...

Страница 20: ...ng a R3 8 ISO Swagelok code SS 12M0 1 6RTBT b 1 2 NPT Swagelok code SS 12M0 1 8BT Note that the connector inner diameters extend for 12 mm probe 2 Probe position Before the final tightening check that...

Страница 21: ...________________________________________________ 19 d Connector can be disconnected and re installed In re installation first turn the connector nut finger tight and then with wrench 1 4 turn 90 Use t...

Страница 22: ...USER S GUIDE____________________________________________________________________ 20 __________________________________________________________________ M210474EN B This page intentionally left blank...

Страница 23: ...mitter is delivered with screw terminal connector or with detachable 5m cable with eight wires for serial port analog outputs and 24VDC power supply See the wiring instructions below Cable wiring Scre...

Страница 24: ...USER S GUIDE____________________________________________________________________ 22 __________________________________________________________________ M210474EN B...

Страница 25: ...rameters The transmitter communicates via an RS232C serial interface The transmitter can be polled or set on run mode with specific commands The data format will be factory settings 1 Start Bit 7 Data...

Страница 26: ...Hypertrm double click Hyperterminal click Connection Description type the name of the connection in the appropriate field and select an icon if available click OK Connection Description type the name...

Страница 27: ...output format of SEND and R commands DATE Entering the date TIME Setting the time FDATE ON OFF Adding date to R and SEND outputs FTIME ON OFF Adding time to output to SEND and R outputs UNIT Selecting...

Страница 28: ...mode the only command that can be used is S stop The output mode can be changed with command FORM Example r aw 0 2000 aw T 25 09 C aw 0 2000 aw T 25 20 C S Stopping the continuous outputting S Stops t...

Страница 29: ...aw T 47 37 C If value is too long to fit to the allocated space or if there is an error in outputting value is displayed with stars For example aw aw T 31 0 C The output mode can be changed with comma...

Страница 30: ...ged one parameter at a time or all parameters at once SERI O changing parity only 4800 O 7 1 SERI 600 N 8 1 changing all parameters 600 N 8 1 ADDR Setting the transmitter address for use in POLL mode...

Страница 31: ...in STOP mode command CLOSE returns the instrument to POLL mode Example relative humidity calibration is performed at transmitter 2 which is in POLL mode OPEN 2 opens the line to transmitter 2 CRH cal...

Страница 32: ...ppm 53 4 ppm T 27 3 C send 2000 01 01 20 56 27 N 0 aw 0 78 ppm 53 2 ppm T 27 2 C TIME DATE Setting time and date TIME DATE Sets the time and date to the transmitter TIME Current time is 04 12 39 Enter...

Страница 33: ...TIME x FDATE x x ON or OFF Command will enable disable output of time and date to the serial line send aw 0 2 aw T 31 0 C ftime on Form time ON send 03 47 59 aw 0 2 aw T 31 0 C fdate on Form date ON s...

Страница 34: ...ansformer oil only AMODE Setting the analog outputs 0 20 mA 4 20 mA AMODE ch1 ch2 where ch1 and ch2 I0 0 20 mA I1 4 20 mA amode i1 i1 Ch1 output mode 4 20mA Ch2 output mode 4 20mA If the output includ...

Страница 35: ...alog outputs ASCL Example ascl Ch1 T lo 40 00 C 20 Ch1 T hi 60 00 C 40 Ch2 ppm lo 0 00 ppm 0 Ch2 ppm hi 5000 00 ppm 3000 ascl Ch1 T lo 20 00 C Ch1 T hi 40 00 C Ch2 ppm lo 0 00 ppm Ch2 ppm hi 3000 00 p...

Страница 36: ...n values AQTEST x yyy yyy where x aw T ppm yyy yyy value For example AQTEST aw 0 5 CH1 aw 0 5000 aw 10 000mA CH2 T 22 3 C 7 568mA The set values remain valid until you give the command AQTEST without...

Страница 37: ...e the salt bath and change the reference condition NOTE It is important to clean the sensor before calibration as the dirty sensor can contamine the salt bath and change the reference condition Relati...

Страница 38: ...hole of the dry end reference chamber e g LiCl 11 RH in the humidity calibrator HMK15 please use the adapter fitting 13 5 mm 3 Wait at least 30 minutes for the sensor to stabilize 4 Give command CRH...

Страница 39: ...st 30 minutes You can follow the stabilization by pressing any key typing C and pressing ENTER 8 When stabilized type the high end reference value after a question mark and press ENTER crh RH 11 25 Re...

Страница 40: ...a few times to check if the reading is stabilized 6 When the reading is stabilized give the reference temperature after the question mark and press ENTER three times ct T 16 06 Ref1 c T 16 06 Ref1 c T...

Страница 41: ...000 1 T offset 0 00000000 0 T gain 0 40000000 1 3 Reset the transmitter by giving a command RESET Transmitter returns to normal mode FCRH Relative humidity calibration after sensor change FCRH The tra...

Страница 42: ...Vaisala HEL HMK15 CDATE Giving date to calibration information field CDATE yyyy mm dd Set calibration date CDATE 2001 12 11 Calibration 2001 12 11 Error states ERRS Displaying the error messages ERRS...

Страница 43: ...uld not cause problems in process monitoring AERR Example aerr Ch1 error out 0 000mA Ch2 error out 0 000mA NOTE Error output value must be within a valid range for output type NOTE The error output va...

Страница 44: ...13 25 hPa RS232 settings Address 2 Output interval 1 MIN Baud P D S 4800 E 7 1 Serial mode STOP Analog outputs Ch1 output mode 0 20mA Ch2 output mode 4 20mA Ch1 error out 0 000mA Ch2 error out 0 000mA...

Страница 45: ...LT Setting the result filtering Configure type of filtering that will be used for all outputs FILT xx where xx OFF ON or EXT OFF No filtering default ON Short filter of about 15 s results the average...

Страница 46: ...USER S GUIDE____________________________________________________________________ 44 __________________________________________________________________ M210474EN B This page intentionally left blank...

Страница 47: ...lter on the probe head Take care to tighten the filter properly recommended force 130 Ncm New sensors and filters can be ordered from Vaisala see list of accessories on page 51 Clean the sensor before...

Страница 48: ...age 7 2 Contact a Vaisala Service Center or a local Vaisala representative The latest contact information and instructions are available from www vaisala com Addresses of the Service Centers are provi...

Страница 49: ...______________ 47 Vaisala Service Centers Vaisala Service Centers perform calibrations and adjustments as well as repair and spare part services See contact information below Vaisala Service Centers a...

Страница 50: ...USER S GUIDE____________________________________________________________________ 48 __________________________________________________________________ M210474EN B This page intentionally left blank...

Страница 51: ...st high quality certified humidity standards 0 01 0 0 9 0 02 0 9 1 0 Response time 90 at 20 C in still oil stainless steel filter 10 min Humidity sensor HUMICAP 180 L2 Temperature Measurement range 70...

Страница 52: ...ressure range MMT317 0 10 bar MMT318 0 40 bar Transmitter housing material G AlSI10Mg Transmitter base material ABS PC Housing classification IP 65 NEMA 4 Cable feed through alternatives 8 pole connec...

Страница 53: ...22 Class B Immunity Electrostatic discharge ESD EN IEC 61000 4 2 criteria B Radiated immunity EN IEC 61000 4 3 criteria A EFT burst Electric fast transients EN IEC 61000 4 4 criteria B Surge EN IEC 61...

Страница 54: ...8 115 4 53 5 0 20 102 4 02 4 5 0 177 83 5 3 29 48 5 1 91 19 0 75 12 0 47 6 0 24 A Tapered thread Parallel thread 216 435 8 50 17 1 180 400 7 09 15 7 13 5 0 53 12 0 47 Probe pushed down Probe up A Prob...

Страница 55: ...______________________Dimensions VAISALA _______________________________________________________________________ 53 40 manual press tool 14 handle ball of the ball valve 14 Adjustment range 120 mm 340...

Страница 56: ...GUIDE____________________________________________________________________ 54 __________________________________________________________________ M210474EN B MMT317 with optional Swagelok Connector Dime...

Страница 57: ...rements can also warn about leaks in the oil system as water is absorbed from the surrounding air Heating and cooling of a transformer effect moisture levels in oil This is due to the fact that the wa...

Страница 58: ...raditionally moisture in transformer oil is measured by using ppm units The ppm output shows the average mass concentration of water in oil The moisture and temperature transmitter MMT318 and MMT317 h...

Страница 59: ...ing If additional accuracy is needed refer to the paragraph Calculation Model with Oil Specific Coefficients Calculation Model with Oil Specific Coefficients For additional accuracy oil specific calcu...

Страница 60: ...Oil ppm ON Oil 0 1 66269994E 03 Oil 1 7 36999989E 00 OIL Changing the calculation coefficients Calculation Model with Oil Specific Coefficients 1 Press the blue adjustment button see picture on page...

Страница 61: ...el with Average Coefficients Temperatures 30 C better than 10 of the reading Temperatures 30 C see the figure below Figure 2 The maximum errors caused by deviation of mineral oils using calculation mo...

Страница 62: ...sure However accidental leakages from oil coolers and other equipment may also cause damage In paper machines the oil should absorb water while lubricating the bearings and then release this water whe...

Страница 63: ...www vaisala com M210474EN...

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