Shaw SDHmini Bl Скачать руководство пользователя страница 24

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13.0  Temperature

Typical ambient variations experienced throughout the world are quite acceptable 

but avoid placing the instrument in direct sunlight or near a source of radiant 

or convected heat. In countries that experience extremes of temperature, 

always carry out the automatic calibration with the instrument at its operating 

temperature.

14.0  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 the 

Shaw SDHmini is so successful. The sensor is kept in a dry condition when it is not 

in use and therefore results are obtained in the quickest possible time.

To check whether a particular instrument is within specification, carry out the 

automatic calibration procedure, close the instrument head and note the reading 

ten minutes later. If the unit has not dried down to -40 °C after this ten minute 

period, the instrument should be returned to your supplier/authorised distributor 

for examination.

15.0  Guarantee

All Shaw products are guaranteed for two years from the date of purchase, some 

exclusions are as follows:

Removing protective guard from any sensor, subjecting sensor to shock or black 

list gases e.g. caustic and acidic gases like ammonia and chlorine, tampering with 

any internal electronics and applying incorrect supply to voltage meters, subjecting 

to excessive flow rate, contaminants and general misuse.

If you suspect a fault which you feel needs to be attended to under guarantee 

please contact us for assistance hopefully to help fault find and effect a remedy 

and if this is not successful, to give precise instructions for the return for 

inspection.

No equipment will be replaced or repaired without having been returned for 

inspection either to ourselves or an authorised distributor.

16.0  Basic Definitions

Water Vapour Pressure

The pressure exerted by the water vapour contained in any mixture of gases. The 

total pressure exerted by the gas mixture is the sum of the pressures exerted by its

Содержание SDHmini Bl

Страница 1: ...Model SDHmini Dewpoint Meter Instruction Manual SDHmini User Manual Iss 1...

Страница 2: ......

Страница 3: ...tion AutoCal 14 CalSet 15 Calibration Notes 16 Additional Information 17 Additional Sensor Settings 17 Sensor Type 17 Selecting Gas Types 17 Selecting Gas Molecular Weights 18 Pressure 18 Non Measurem...

Страница 4: ...ini is a micro controller based battery operated dewpoint hygrometer with state of the art features and enhancements with support of USB and optional Bluetooth interfaces for communicating with PC and...

Страница 5: ...es and real time data from the unit The displayed units can be changed on both the primary and secondary displays for the selectable moisture unit e g C F g m3 ppm v ppm w ppb and lbs MMscf The inbuil...

Страница 6: ...ys be charged at room temperature The discharging cell life hours of use from a fully charged cell will reduce when used in cold conditions 2 2 Pressure Exposure 6 Battery Note Please refer to section...

Страница 7: ...o Avoid The moisture sensors are suitable for any different industrial and research applications Most gases can be checked for their moisture content with no need for the calibration to be altered whe...

Страница 8: ...3 2 Piping Installation Schematic 8...

Страница 9: ...practical Pressure Reduction Valve or Pressure Regulator the sample is measured at atmospheric pressure requiring that valve 4 is fitted to the system Flow Control Valve Sample Connection SDHmini Flow...

Страница 10: ...The SDHmini is supplied with two connections a fir tree on one side and a Swagelok compression fitting for or 6 mm OD pipe as specified on your order on the other Either can be used as the inlet conn...

Страница 11: ...reen see below displaying the current moisture measurement in a variety of views The last used or last selected mode will be utilised automatically Top Bar Secondary Display or Measurement Value Butto...

Страница 12: ...lication of pressure dewpoint to evaluate the measurement in other samples pressures 5 4 Choice of Units To choose the engineering units to be displayed select the units key from the main digital view...

Страница 13: ...nits B This continues to allow high precision measurement whilst having the benefit of the graphical display 6 0 Calibration 6 1 Calibration Checking Field calibrations of the SDHmini may be performed...

Страница 14: ...ewpoint The SDHmini can therefore be adjusted to read 0 C dewpoint on any gas with a moisture concentration wetter than 0 C dewpoint ambient air for instance thus setting the span to match the origina...

Страница 15: ...mperature is below approximately 12 C 6 3 CalSet The unit may be checked against a known moisture level for example from a moisture generator or other reference standard such as a chilled mirror hygro...

Страница 16: ...he value present at the start of the aborted CalSet process is reinserted The SDHmini will return to the normal operational mode 6 4 Calibration Notes If the instrument fails calibration a message wil...

Страница 17: ...tings associated with the sensors and its environment 7 2 Sensor Type Here you may view the type of sensor installed in the SDHmini and its range If you receive another sensor type colour then you may...

Страница 18: ...d applied pressure When this function is selected the main and secondary display screens will display the pressure at which the dewpoint reading is calculated The SDHmini requires that a numerical pre...

Страница 19: ...ss Use and to change the date Here for example the date is changing from 06 03 15 to 06 04 15 Press to enter new date or to abort changes 9 2 Changing the Time In order to change the present time pres...

Страница 20: ...pre installed languages indicates which language is currently selected The SDHmini operates with the following 10 language options English German French Spanish Portuguese Russian Italian Chinese Japa...

Страница 21: ...ing coil graphical viewing screen Takes the user to the Information screen Takes the user to the Bluetooth Setup screen If the SDHmini is connected to a PC then the second hotkey is replaced by an SD...

Страница 22: ...d If a problem exists then the message will turn red and say Connection Failed This maybe due to An incorrect authorisation code The external device has powered down The external device is out of rang...

Страница 23: ...spill desiccant Only use soft jaws Do not use tools or vice with hard jaws There is no need to remove the retaining ring from the desiccant chamber top section except perhaps to change an O ring Disp...

Страница 24: ...te period the instrument should be returned to your supplier authorised distributor for examination 15 0 Guarantee All Shaw products are guaranteed for two years from the date of purchase some exclusi...

Страница 25: ...perature 17 0 Problem Guide 25 Fault Explanation Required Action Notes Unit does not turn on Screen remains blank and back light off Battery low level Connect a battery charger unit for a minimum of 1...

Страница 26: ...ion Three main viewing digital graphical and a traditional moving coil Secondary display in the top right for display of readings in alternative units of measurement Internal Single lithium ion cell 4...

Страница 27: ...27 19 0 SDHmini General Assembly Diagram...

Страница 28: ...ure Meters UK Ltd Len Shaw Building Bolton Lane Bradford BD2 1AF England t 44 0 1274 733582 f 44 0 1274 370151 e mail shawmeters com www shawmeters com SHAW MOISTURE METERS UK LTD 2016 SDHmini User Ma...

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