Sartorius 2405 User guide

Digital Micro Balances

2405

Instructions for installation and operation

1. UNPACKING

2. INSTALLATION OF THE BALANCE

2.1. Checking the voltage setting

2.2. Detaching the transport arrestment

2.3. Assembling the balance

2.4. Inserting the glass plates

2.5. Leveling the balance

3. DESCRIPTION OF THE OPERATING KNOBS

4. CHECKING AND ADJUSTING

4.1. Focusing the projection scale

4.2. Zero point

4.3. Sensitivity

5. WEIGHING PROCEDURES

6. SUPPLEMENT

6.1. Accuracy of the built-in set of weights

6.2. Correction of the weighing result

6.3. Determination of the air density

6.4. Conditions for installing micro balances

7. TECHNICAL DATA

1. Unpacking

1.1. Carefully remove the balance from their cartons.

1.2. Carefully unpack accessories.

2. INSTALLATION

2.0.1. IMPORTANT: see supplement 6.1. to 6.4.

2.0.2. Remove outer and inner lid.

2.1. Checking the voltage setting:

2.1.1. Place balance on the rear on to the plastic dust cover. Push the cover plate in the base plate aside

and change connecting wires, if necessary. Close the cover plate and set up the balance. Remove the

adhesive tape carefully and wipe off the arrears with alcohol.

2.2. Detaching the transport arrestment:

2.2.1. Weight application must indicate “29.99”.

2.2.2. Take off cover of the damping pot.

2.2.3. 3 Loosen knurled nuts, remove paper strips, swing aside springs and retighten nuts.

Remove cardboard strip.

2.2.4. Take out balance beam. Take off 3 plastic discs (1). Loosen 3 knurled nuts (2), swing aside springs

and retighten nuts.

2.2.5. Remove cardboard strip.

Connect balance to the mains. Press gray push button (see 3.1.).

2.2.6. Remove brackets at the ends of the locking bars of the weight application.

2.2.7. Pull out bars carefully.

2.3. Assembling the balance:

2.3.1. Check arrestment pins (1), damping (2) and bearing (3) and clean, if necessary.

2.3.2. Check knife-edges and bearing and clean, if necessary.

2.3.3. Set balance beam on to the arrestment pins (1). The knife-edge must not come into contact with the

bearing.

2.3.4. Place cover plate on to the damping pot and turn anti-clockwise until the slit the cover plate runs paral-

lel with the balance beam. Turn clamp clockwise until it locks.

2.3.5. Check stirrup plate and clean, if necessary. Set stirrup plate on to the arrestment pins.

2.3.6.2. Unscrew 2 knurled nuts and take off bow.

2.3.7. Attach stirrup and insert it.

2.3.8. Unscrew 2 knurled nuts and take down carefully the locking plate for the weights. Put back the perfo-

rated plate afterwards.

2.3.9. Attach lamp housing and plug in the cable.

2.3.10. Place the inside hood on to the balance.

2.3.11. Swing out pan lifting device. Open upper sliding door and attach pan bow.

2.4. Inserting the glass plates:

2.4.1. Place glass plate into the balance and close upper sliding door. Put the balance pan on to the holder

and swing in the pan.

2.4.2. Place glass plate into the balance and close sliding door.

2.4.3. Put locking screws for the front plate into position.

2.4.4. Fasten front plate.

2.4.5.Turn weight application to “0.00” and set micrometer to “00”.

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