Metrohm 775 User Manual

CH-9101 Herisau/Switzerland
E-Mail [e-mail]
Internet www.metrohm.com

775 Dosimat

Instructions for Use

8.775.1013

2005.06 ti/dm

Content

Content

1 Overview ...................................................................................................................2

2 Error messages, troubleshooting............................................................................4

2.1 Special messages and error messages ..................................................................... 4

2.2 Diagnosis ................................................................................................................... 5

2.3 RAM initialisation......................................................................................................... 8

2.4 Releasing a locked spindle with insertd Exchange Unit.............................................9

3 Appendix.................................................................................................................10

3.1 Technical specifications............................................................................................ 10

3.2 Warranty and certificates .......................................................................................... 12

3.2.1 Warranty ............................................................................................................. 12

3.2.2 Certificate of Conformity and System Validation................................................ 13

3.3 Scope of delivery and ordering designations ........................................................... 15

Index...........................................................................................................................16

775 Dosimat

Overview

Explanation of symbols:

< > means "key", e.g. <GO> means key "GO"

DOS.....0.000 ml means "display"

775 Dosimat

1

Overview

1 Overview

Front view of instrument:

1 Exchange unit

Choose the volume of the Exchange unit in such a

way that a volume between 10...100% of the nominal
volume is expelled.

2 Display
The 16 digit display shows all important information:

DOS 3.456 ml Mode (DOS = dosing) and dosed

DOS ↑ 3.456 ml The piston is moving upwards.
DOS ↓ 3.456 ml The piston is moving downwards.
DOS → 3.456 ml The cock is turned to the right.
DOS ← 3.456 ml The cock is turned to the left.

The display of the status

important for very slow dosings where movements of
the piston cannot be clearly identified.

3 Operating keys at the Dosimat

<FILL> Filling of the dosing cylinder.

<CLEAR> Resetting of the volume display to 0.

<GO> Dosing goes on as long as <GO> is

pressed.

4 Setting of display contrast

5 Analogue setting of dosing rate

Position 1 = lowest rate

Position 10 = highest rate

volume. Dosimat is in stand-by
position

↑ resp.↓ are specially

1

2

3

4

5

775 Dosimat

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