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SADP_Operating_ Instructions_0114

Model SADP

Automatic Dewpoint Meter

Operating Instructions

Содержание SADP

Страница 1: ...SADP_Operating_ Instructions_0114 Model SADP Automatic Dewpoint Meter Operating Instructions...

Страница 2: ...ing g_ Instructi Sh ons_0114 haw Moist Len S B t 44 f 44 e mail www s ture Meter Shaw Build Bolton Lane Bradford BD2 1AF England 0 1274 73 0 1274 37 shawmete shawmeter rs UK Ltd ding e 33582 70151 ers...

Страница 3: ...ident please notify the carrier and the Shaw Moisture Meters representative from where this unit was purchased You should have received if ordered 1 Model SADP Instrument 1 Carry Case 1 Screwdriver Al...

Страница 4: ...dex 4 4 0 Purging the Sample Connection 5 4 1 Sample Connections 5 5 0 Controls 5 6 0 Normal Operation 6 7 0 Calibration Checking 7 8 0 The Sensor 8 8 1 Gaining Access to the Sensor 8 9 0 Additional I...

Страница 5: ...ternal power source The instrument comes supplied with 6 c size cells In normal operation these will last for over 12 months The unique measuring head is designed to keep the sensor dry when the instr...

Страница 6: ...which effectively means that the instruments may be used in any environment except a deep mine The ATEX certification is Ex II 1 G Ex ia IIC T6 Ga This means Ex European certification mark for electri...

Страница 7: ...is directly affected by changes in partial pressure of water vapour and these changes that are proportional to the dew frost point temperature are displayed on the instrument indicator 3 1 Gases to A...

Страница 8: ...the air gas sample contains heavy hydrocarbon condensate the filter must be of the coalescing type with a drain The filter unit should be positioned as close to the sample point as practical 4 Pressu...

Страница 9: ...re from the sample pipe work and components Check that no liquid or particulate contamination which could damage the sensor is passing through the sample pipe Directing the sample onto a piece of whit...

Страница 10: ...the instrument head and slowly raise the head by hand 6 The instrument reading will move up the scale wetter and stabilise When there is no further change in reading note the result If the reading mo...

Страница 11: ...d position 3 After about 1 minute not critical but not more than a few minutes check the instrument reading On SADP models it should be at the Automatic Calibration line It is not critical within 1 or...

Страница 12: ...the dielectric value of the sensor which is then measured by the analyser A dynamic equilibrium will exist between the water vapour outside the sensor and the condensed water within the pores This equ...

Страница 13: ...insert the head into the seal and when it meets the seal push firmly till it passes the seal 2 Unscrew the plain brass base of the inner section discard the old desiccant and replace with new 3 Check...

Страница 14: ...lculator are printed on it 9 6 Response Time The response time of any water vapour pressure detector will naturally be very much quicker from dry to wet than from wet to dry This is the reason that th...

Страница 15: ...st be cooled in order that it should be saturated with water vapour i e 100 relative humidity For practical reasons it is referred to water above 0 deg C and ice below 0 deq C PARTS PER MILLION BY VOL...

Страница 16: ...s extremely low and so there is no hazard 6 Adjust the Automatic Calibration control to give a reading of full scale i e on the Automatic Calibration line 7 Remove the short circuit and the reading sh...

Страница 17: ...ust be replaced ZERO READING Open Circuit on Cable Disconnect plug from sensor and connect centre pin of plug to the outer connection No reading will be obtained Repair cable Open Circuit on Sensor Te...

Страница 18: ...If this does not cure problem return for calibration Comparison with Refer to Section 7 0 of manual re check Autocal Secondary Standard If this does not cure problem return for calibration Instrument...

Страница 19: ...SADP_Operating_ Instructions_0114 13 Hygrometric Equivalents...

Страница 20: ...meter showing Dewpoint and ppm with amplified range of 0 10ppm on TR versions SADP D 2cm 3 1 2 Digit LCD with battery check symbol Sensor Connection Internal Power Supply 9V DC 6 x VARTA 2014 R14 cell...

Страница 21: ...SADP_Operating_ Instructions_0114...