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DURRIDGE Company Inc.

900 Technology Park Drive
Billerica, MA 01821

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(978)-667-9556

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(978)-667-9557

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www.durridge.com

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Revision 2021-08-31

Содержание RAD7

Страница 1: ...WATER PROBE Passive Slow Response Radon in Water Accessory for the RAD7 User Manual...

Страница 2: ...Protocol 6 1 4 3 User Protocol 6 2 MEASUREMENT PROCEDURE 7 2 1 Start Up 7 2 1 1 Temperature Probe 7 2 1 2 Start Measurement 7 2 2 Speed of Response 7 2 2 1 Measurement in Progress 7 2 2 2 In fl uenci...

Страница 3: ...ff ect on Response Time 11 4 4 Custom DRYSTIK Settings 11 Fig 4 Water Probe con fi guration with Active DRYSTIK 12 5 CARE MAINTENANCE AND TROUBLESHOOTING 13 5 1 Water Catastrophe 13 5 2 RAD7 Care 13...

Страница 4: ...mperature is measured with a temperature probe inserted into the water As an example at a water temperature of 10 degrees Celsius the partition coe ffi cient is about 1 3 Th at means there is three ti...

Страница 5: ...t this end to the air inlet fi lter with 1 8 ID tubing at the fi lter end which is then placed on the RAD7 INLET Th e Luer taper ensures an airtight connection Fig 2 RAD7 Water Probe Standard Setup 1...

Страница 6: ...tteries in a fully charged condition Set the RAD7 s Mode to Auto which starts the instrument in Sni ff mode counting 218 polonium decays only and switched automatically to Normal Mode counting 218 pol...

Страница 7: ...a standard deviation of 10 At very low concentrations it may take hours and averaging over many cycles to reach a su ffi ciently precise value 2 2 2 In fl uencing Factors Th ere are two processes req...

Страница 8: ...the process and which must be replenished Th e most obvious is the desiccant A new or regenerated Laboratory Drying Unit will normally last for about ten days of continuous use in a temperate climate...

Страница 9: ...ce as instructed Th e water temperature information is used by CAPTURE to calculate the radon in water concentrations For detailed instructions please see the Water Probe information in the CAPTURE us...

Страница 10: ...formula is applied automatically in CAPTURE when the Water Type is set to Fresh Water in the Run Parameters Window as shown in Fig 3 below 3 2 2 Schubert Et Al Formula If the Water Type is set to Sal...

Страница 11: ...It should be inserted between the DRYSTIK air outlet and the inlet fi lter on the RAD7 as shown in Fig 4 on the following page Th e desiccant will last for a very long time and the drying tube will ad...

Страница 12: ...Fig 4 Water Probe con fi guration with Active DRYSTIK Section 4 DRYSTIK 12...

Страница 13: ...id onto its hinges Th e wrap will make the RAD7 almost watertight If it tears it can be easily replaced at any time Th e instrument should in any case be returned every year for recalibration It is us...

Страница 14: ...dioxide measurements in coastal waters Environmental Science and Technology 46 14 7685 7691 Schubert M Paschke A Lieberman E Burnett W C 2012 Air Water Partitioning of 222Rn and its Dependence on Wat...

Страница 15: ...978 667 9556 Fax 978 667 9557 Web www durridge com Email service durridge com Copyright 2021 DURRIDGE Company Inc All rights reserved DURRIDGE the DURRIDGE logo and the Works with the DURRIDGE logo ar...