Hf-scientific DRT-100B Research Turbidimeters Manual do Utilizador descarregar pdf (Página 3)

DRT-100B!(5/00)

FOREWORD

HF!TURBIDIMETERS

HF!turbidimeters!are!manufactured!to!meet!design!criteria!for!nephelometers!as!described!in!Standard

Methods!For!Examination!of!Water!and!Wastewater.!!HF!turbidimeters!are!approved!by!the!U.S.!EPA*! as!a!means

to!measure!the!turbidity!of!potable!water,!waste!water,!and!other!liquids.

HF!turbidimeters!provide!a!linear!display!of!turbidity,!throughout!all!ranges,!in!Nephelometric!Turbidity

Units!(NTU).!!HF!turbidimeters!use!solid!state!electronic!components!because!they!resist!thermal!variation!and!are

not!affected!by!normal!line!voltage!fluctuations.

HF!turbidimeters!can!be!calibrated!using!HF!scientific!factory!certified!Secondary!Standards!or!Formazin.

Factory!calibration!is!accomplished!using!HF!scientific!Secondary!Standards,!which!are!factory!certified!traceable

to!Formazin,!therefore,!this!instruction!manual!describes!the!proper!procedures!for!calibration!of!HF!turbidimeters

using! Secondary! Standards.

HF!turbidimeter!manuals!are! designed!to!assist!the!user!in!taking!full!advantage!of!the!instrument!in!a

majority!of!its!applications.!!However,!in!the!event!that!unusual!circumstances!or!problems,!not!covered!by!this

manual,!arise!please!feel!free!to!contact!our!local!distributor!or!the!manufacturer.

HF!scientific,!inc.

3170!Metro!Parkway

Fort!Myers,!Florida!33916-7597

Phone:!!(941)!337-2116

Fax:!!(941)!332-7643

Our!engineering!staff!is!available!to!help!you!with!your!specific!needs.

*EPA!approved!means!the!instrument!meets!or! exceeds!the!design!and!performance! criteria!as!specified!in

the!United!States!Environmental!Protection!Agency!method!180.1.

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