Shaw SDH-PSS Instruction Manual Download Page 3

1  Introduction

1.1  Unpacking Your Shaw Moisture Meters SDHmini Portable 

Sample System (SDH-PSS)

Please examine the SDHmini Portable Sample System package for any damage 
or mishandling. If any damage is evident please notify the carrier and the Shaw 
Moisture Meters representative from where the unit was purchased.

You should have received (if ordered):

SDHmini Portable Sample System (with requested configuration)
Anti-static padded carrying case
Instruction manual

If anything is missing please contact your distributor immediately.

This instruction manual is only for use with the instrument supplied. All 
information required for the safe and proper operational use of the instrument 
is contained here. Please make sure you read and understand the information 
and instructions in this instruction manual before using the instrument. Failure 
to operate the instrument as directed in this manual may:

Expose personnel to risk of injury
Cause damage to and/or impair the function of the instrument
Invalidate the instrument warranty

1.2  General Description

The SDHmini Portable Sample System has been specifically designed to 
condition pressurised gas samples (2900 psi max/200barg, please see 
specifications for details) for use with the SDHmini dew point meter range.

Although the SDHmini Portable Sample System chassis is constructed from 
high quality 304 stainless steel, care should be taken when it is in transit and 
appropriate packaging used. 





3

Summary of Contents for SDH-PSS

Page 1: ...Portable Sample System For SDHmini Dewpoint Meters Instruction Manual Issue 1...

Page 2: ...e Exposure 5 Quick Start Guide Normal Operation 6 3 1 Installing the SDHmini into the Portable Sample System 6 3 2 Connecting a Sample Line 7 Purging the Instrument Before Taking a Sample 8 Disconnect...

Page 3: ...ed for the safe and proper operational use of the instrument is contained here Please make sure you read and understand the information and instructions in this instruction manual before using the ins...

Page 4: ...mini Portable Sample System can be used with the intrinsically safe Model SDHmini Ex in hazardous environments 1 3 General Arrangement Example Example shown is a SDH PSS R F Q H Pocket for User Manual...

Page 5: ...the safety critical prohibitions warnings and notes highlighted in this instruction manual 2 2 Pressure Exposure The maximum pressure to which the telescopic measuring head is exposed should not be m...

Page 6: ...em Connect the SDHmini to the Portable Sample System using the appropriate connecting tubes supplied and ensure a gas tight seal on both sides of the instrument Fig 1 The user will need a 14 mm open e...

Page 7: ...een on the white filter paper a filter unit must be installed at the isolation valve outlet and before the sample hose When the filter unit is fitted repeat the above procedure with the white filter c...

Page 8: ...re reduction valve Fig 9 Carefully open the pressure regulator valve Fig 10 until a flow of 5 to 15 litres per minute can be seen on the flow indicator Fig 11 If a needle valve is fitted carefully ope...

Page 9: ...ould rise to that of the sample gas Take a reading when the dewpoint value on the screen has settled and is stable Fig 16 After a reading has been taken and sampling is complete push the desiccant hea...

Page 10: ...ample line from the SDHmini Portable Sample System and the isolation valve Turn off the pressure regulator or needle valve See section 2 1 Fig 3 and Fig 4 DO NOT Do not disconnect any connections whil...

Page 11: ...sses and or at Very Low Pressure For very dry gasses and or very low pressure use the Pig Tail VENT tube to stop back diffusion and contaminating the sample head sensor Fig 22 8 Cleaning the SDHmini P...

Page 12: ...xafluoride SF6 has no effect on the sensor If the gas has been exposed to arcing however it is possible that various acidic species will have been formed that will corrode the sensor When testing SF6...

Page 13: ...13 11 Instrument Schematic Front View Side View NOTE Instrument is for illustration purposes only and not supplied with the SDHmini Portable Sample System...

Page 14: ...de stainless steel with removable housing for access to replaceable filter cartridges 0 1 micron filter cartridge Pressure Regulator where applicable High grade stainless steel Pressure range 0 200bar...

Page 15: ...td 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 2019 SDHmini Portable Sample System...

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