Sartorius Micro M 500 P User manual

Sartorius Micro
M 500 P
Installation and Operating Instructions
98648-000-73

2
1 Weighing pans
2 Pan support
3 Interior draft shield
4 Interface
5 Power receptacle
6 Level indicator
7 Leveling foot
8 Print control
9 Menu access switch
10 Tare control
11 ON/OFF button
12 Weight display
13 Manufacturer's label

3
Contents
Page
About the Product (Warranty) 4
Storage and Shipping Conditions 5
Equipment Supplied 6
How to Handle Your Microbalance 7
Installation Instructions 8
Ambient Conditions 8
Connecting Electronic Devices (Peripherals) 8
Startup 9
Connecting the Balance to Line Power 9
Voltage Selection 9
Safety Precautions 11
Leveling the Balance using the Level Indicator 11
Operation 12
Weight Display 12
Turning the Display On and Off 13
Self-Test 13
Weighing 13
Taring 13
Calibration 14
Balance Operating Program 15
How to Access the Menu of the
Balance Operating Program 15
How to Read a Program Menu Code (List Mode) 15
How to Change a Program Menu Code
(Change Mode) 16
Menu of the Balance Operating Program 17
Troubleshooting Guide 18
Accessories 19
Care and Maintenance 20
Cleaning 20
Safety Inspection 20
Data Interface 21
Specifications 22

4
About the Product (Warranty)
With this Sartorius Balance you have acquired a high-quality
electronic weighing Instrument that will ease your daily work-
load.
Please read these Installation and operating instructions care-
fully before operating your new balance.
Pursuant to the German Directive for the Implementation
of Regulations for Prevention of Accidents "Elektrische
Anlagen und Betriebsmittel (VBG 4)" [Electrical
Installations and Equipment] of April 1986, it is hereby
certified that the equipment delivered, "Electronic
Microbalance, model M 500 P," is manufactured and
tested in compliance with the following DIN/VDE
regulations
DIN IEC 348/VDE 0411 Safety requirements for
electronic measuring apparatus
DIN IEC 380/VDE 0806 Safety of
electrically energized Office
machines
DIN IEC 601/VDE 0750 Safety of medical electrical
equipment
and Article 10 of the Low Voltage Directive (73/23/EEC)
issued on February 19, 1973 by the European
Community. When you use electrical equipment in
installations and under ambient conditions requiring
higher safety Standards, you must comply with the
provisions as specified in the applicable regulations for
installation in your country.

5
Storage and Shipping Conditions
Allowable storage temperature range: -40°C...+70°C
-40°F... 158°F
The packaging of the balance has been designed to ensure that
the balance will not be damaged even if it is dropped from a
height of 80 cm (about 32 inches).
After unpacking the balance, please check it immediately for
any visible damage as a result of rough handling during ship-
ment. If this is the case, proceed as directed in the section enti-
tled "Safety Inspection."
Save all parts of the packaging and the box for shipping
your balance to prevent any damage during transportation.
In addition, please disconnect all connecting cables (e.g.
the plug on the power supply) to avoid damaging them.
Do not expose the balance unnecessarily to extreme tempera-
tures, moisture, shocks, blows or vibrations.

6
Equipment Supplied
The equipment supplied consists of the components pictured on
the left:
— balance
— draft shield
— portable power supply
— dust cover
The kit of Standard accessories contains the following:
1 Standard weighing pan
1 special pan for weighing filaments
1 pan support
1 interior draft shield
1 calibration weight, 500 mg (accuracy class: E2)
1 brush
1 pair of forceps
1 chamois

7
How to Handle Your Microbalance
Before you Start weighing, please observe the
following:
After plugging your balance into a wall outlet, make sure to al-
low for >2 hours' warmup.
Working with a microbalance requires a steady hand and a
smooth, uninterrupted technique.
Use forceps or other suitable Utensils to load your sample on
the pan.
Do a few trial weighing procedures before you begin with actual
weighing of your sample.
lf the weighing chamber has not been opened for a relatively
long period, it may have a temperature which is different from
that of the balance's surrounding environment. Therefore, as
soon as you open the weighing chamber, a change in the tem-
perature will inevitably occur. This change in temperature may
show up as a change in the weight readout. In this case, we
recommend that before you begin with an actual repetitive
weighing procedure you open and dose the weighing chamber
at the same rate as you will be doing during such a procedure.
Carefully place you sample on the pan and, if necessary, re-
move it along with the pan. After the weighing chamber is
closed, the weight readout, as a rule, will stabilize after 30 sec.
at the latest.
The accuracy of the resulting weight readouts will increase as
the degree of consistency is increased for successive weighing
procedures.

8
Installation Instructions
Ambient Conditions
Microbalances are highly precise and very sensitive measuring
Instruments. Therefore, please choose a suitable place to set
up your balance. lt should not be exposed to the following:
- Heat radiation
- Aggressive/corrosive substances
- Vibrations
- Drafts
Use a balance table or a wall console (see "Accessories") to set
up your balance.
Do not expose the balance to extreme moisture over long peri-
ods. Moisture in the air can condense on the surfaces of the
balance whenever a cold balance is brought to a substantially
warmer place.
lf you need to transfer the balance to a warmer area, make sure
to condition it for a few hours at room temperature. The best
way to prevent moisture condensation is to leave the balance
connected to line power. The components used in the balance
are rated to at least class KSF according to DIN 40040.
Your Sartorius Balance will provide accurate readouts even
when it is exposed to unfavorable ambient conditions.
You can adapt the balance to your requirements simply by
changing the menu code settings in the balance operating pro-
gram.
For this purpose, read pages 14 through 16
Connecting Electronic Devices (Peripherals)
Always unplug the power supply before you connect or discon-
nect devices to or from the interface ports.

9
Startup
Install components (3 - 1) in the weighing chamber.
Connecting the Balance to Line Power
Your balance is powered by a portable power supply unit. Use a
screwdriver to adjust the voltage selector on the power supply
unit to the setting of your local line voltage (either 115 or 230
volts).
Voltage Selection
Make sure that the voltage rating printed on this unit is identical
to your local line voltage rating.
Write the new voltage setting on the manufacturer's label.
lf the voltage rating specified on the power supply or the plug
design does not match the rating or Standard you use, please
contact your Sartorius dealer.
Important Note
Only use original Sartorius power supplies identified by the Sar-
torius label. Use of power supplies made by other manufactur-
ers, even if these power supplies have a registered approval
rating from a national testing laboratory, requires the consent of
a certified Sartorius technician.
Plug the cord line into the power receptacle. Secure the
connection by tightening the knurled collar. Now plug the power
supply unit into a wall outlet.

10
Safety Precautions
The power supply rated to Class 2 (double insulated) can be
plugged into a wall outlet without taking any additional safety
precautions. The pole of each Output voltage is connected to
the balance housing which can be grounded for Operation.
The interface (see "Interfacing Devices" on page 19 in addition)
is also electrically connected to the balance housing (ground).
Leveling the Balance using the Level Indicator
At the point of use, level the balance using the leveling feet (7)
so that the air bubble is centered within the circle of the level in-
dicator (6).

11
Operation
The weight display shows the following special
messages for your information:
BUSY
The balance processor is still busy processing a function and
will not accept any other commands to perform functions at this
time.
STANDBY
The display has been turned off with the ON/OFF key and the
balance is now in the ready-to-operate mode so that it does not
require warmup.
POWER OFF
The balance was disconnected from line power (reconnection to
line power after the balance was unplugged; power failure or
outage).
CAL
The calibration function has been activated.

12
Turning the Display On and Off
Press the ON/OFF button (11) to turn the display on or off. You
can also turn it on by pressing the tare control (10).
After the balance is connected to line power, the weight display
will go out whenever you turn off the power with the ON/OFF
key. The electronic circuits remain energized (indicated by
STANDBY).
Self-Test
After the power is turned on, a test of all essential electronic cir-
cuits is automatically run.
The display readout "0.000 mg" at the end of the self-test indi-
cated that it has been successfully completed.
Weighing
At this point, place your sample on the pan (1) to determine the
weight. Read off the weight in the display (12) once the weight
unit symbol (in this case "g") appears. The weight readout is
stable a few seconds afterwards, as a rule.
Taring
lf you wish to use a Container of if the weight display does not
indicate "0.000" mg, press the tare control to zero the display.
This means the balance is ready to operate without requiring
warmup the next time you turn it on.

13
Calibration
Unload the balance. When the display reads zero, press the
tare control (10) for at least three seconds until the calibration
weight appears in the weight display.
Center the calibration weight (see Accessory Kit) on the pan
and dose the weighing chamber.
The weight unit symbol "mg" will now appear in the weight dis-
play. An acoustic Signal indicates the end of the calibration pro-
cedure.
You can block the calibration function – see "Balance Operating
Program." This function is accessible whenever the balance op-
erating program is unlocked by the menu access switch.
Make sure to calibrate the balance each time you exchange
the Standard pan for the one for weighing filaments and
vice versa to rule out any effects caused by the inevitable
differences in weights of the pans.

14
Balance Operating Program
The balance operating program lets your adapt your balance to
various ambient conditions and application requirements. At the
factory, we have set the codes for a Standard program, which is
protected by a locking function to prevent accidental changes.
How to Access the Menu of the Balance Operating Program
With the display turned off (STANDBY state), hold down the
tare control and press the ON/OFF button.
Release the tare control as soon as "CH5" is displayed.
lf "L" appears in the display, this Stands for the list mode. In
this mode, you can read a menu code setting, but you cannot
change it.
How to Read a Program Menu Code (List Mode)
Press the tare control each time after the desired digit in the
hundreds, tens and units place is displayed.
The "o" symbol indicates the actual menu code setting.
How to return to the weighing mode:
Press the tare control each time a "0" appears in the numerical
sequence (first, second and third digits).

15
How to Change a Program Menu Code (Change Mode)
Slide the menu access switch in the direction of the arrow (the
menu access switch is located under a protective cap on the
front right of your balance).
"C" will appear in the display (indicating the change mode).
Press the tare control each time the numeral desired appears in
the hundreds, tens, and ones place, respectively.
The "o" symbol that appears indicates the actual setting.
How to return to the weighing mode:
Slide the menu access switch back to its original setting. "L"
will now be displayed.
Press the tare control each time a "0" appears in the numerical
sequence.
lf you have changed a menu code, it will be stored as soon as
the display returns to the weighing mode.

16
List of the programmable Menu Code Settings
C 1 3 1
Page Line Word
Balance Operating program
(active Parameters)
Code Ambient Conditions
Code Tare Parameter
C 1 1 1 Very stable C 2 1 1 Without stability
C 1 1 2 Stable At stability 
c 1 1 3 Unstable
C 1 1 4 Very unstable
Auto Zero
C 1 5 1 ON 
Code Stability Range C 1 5 2 OFF
C 1 2 1 0,25 digit 
C 1 2 2 0,5 digit Calibration
C 1 2 3 1 digit C 1 6 1 Accessible 
C 1 2 4 2 digits C 1 6 2 Access blocked
C 1 2 5 4 digits 
C 1 2 6 8 digits Special Information
C 1 2 7 16 digits Code Program Lock
C 1 2 8 32 digits C 4 1 1 OFF
C 1 2 9 64 digits C 4 1 2 ON 
Code Display Format Code Acoustic Signal
C 1 3 1 Last decimal ON C 4 3 1 ON 
C 1 3 2 Last decimal OFF C 4 3 2 OFF
C 1 3 3 Last decimal at stability
C 1 3 4 All decimals at stability
Additional Parameters for the data Output format at the interface port and for calculation programs are
available on request.-Please refer to the “Accessories."

17
Troubleshooting Guide
Problem ... Causes ... Remedy
No segments appear in the weight
display (12)
- No line current available
- The power supply is not plugged
in
- Check power supply
- Plug in power supply
Weight display only shows "L" or
"CH 2"
- The weighing pan (1) or the pan
support (2) is not in place
- Position the pan and pan support
Weight display shows "H"
- Sample exceeds weighing range - Unload the weighing pan
The weight readout changes
constantly or the special message
"BUSY" does not go out in the
weight display
- The air bubble of the level
indicator is not within the circle
- Unstable ambient conditions
- Too much vibration or balance
exposed to drafts
- The doors of the weighing
chamber are not completely
closed
- Sample does not have a stable
weight
- level balance
- Set up balance in another area
- Access the menu to adjust the
proper code for the particular
type of weighing environment
- Close the doors of the weighing
chamber
The weight readout is obviously
wrong
- The balance has not been
calibrated
- The balance has not been tared
before weighing)
- The air bubble of the level
indicator is not with in the circle
- Calibrate the balance
- Tare before weighing
- Level the balance

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Accessories (Options)
Data printer with
date/time and statistics functions YDP 02-0DV1
Print speed approx. lines/sec
1,5
Printer housing (W x D x H)
in mm
in inches
150 x 138 x 43
5.5 x 5.4 x 1.7
Tare foot switch 7252
Integrable „“Data Input“ keyboard YDI 02 M
for determination of the diameter – **DZ4
Carrying case YDB 01 M
Antitheft locking device 6087
Antivibration balance table 6801
Extension with 2 drawers for
balance table 6802
Wall console 6804
Digital/analog converter YDA 01 Z
IEC converter 7253 16
BCD parallel converter 7253 18
Dust cover 6960 M150

19
Care and Maintenance
Cleaning
Please do not use any aggressive cleaning agents (solvents or
similar agents). Instead, use a piece of cloth wet with a mild de-
tergent to clean the balance.
Make sure that no liquid enters the balance housing.
After cleaning, wipe down the balance with a soft, dry piece of
cloth.
Safety Inspection
lf there is any indication that safe Operation of the balance is
no longer warranted, turn off the power and unplug the balance
immediately. Lock the equipment in a secure place to ensure
that it cannot be used for the time being.
In this case, notify the Sartorius Technical Services Dept. or Di-
vision. Only certified Sartorius service technicians who have the
proper manuals are allowed to perform maintenance and repair
work on the balance.
Safe Operation of the balance with the power supply is no
longer ensured when
— there is visible damage to the power supply
— the power supply no longer functions properly
— the power supply has been stored for relatively long periods
under unfavorable conditions
— the power supply has been exposed to rough handling dur-
ing shipment
We recommend that the balance with the power supply be in-
spected according to the following checklist by a qualified Sarto-
rius Service technician:
— Leakage current <0.05 mA measured by a properly cali-
brated multimeter
— Insulation resistance >7 MΩmeasured with a constant volt-
age of at least 500 V at a 500 kΩload
The duration and number of measurements should be deter-
mined by a qualified Sartorius service technician according to
the particular ambient and operational conditions. However,
such inspection must be done at least once a year.

20
Data Interface
See the "Interface Description for Sartorius Balances and
Scales" enclosed.
Interfacing Devices with the Balance (RS Interface)
Make sure that the interface port is electrically connected to the
protective grounding conductor of the balance housing. The
cabling supplied as accessory components is shielded and
electrically connected on both ends to the cases of the
connectors. This electrical connection may result in interference
caused by cables scraping the floor or by transient currents
ifyou have grounded the housing or connected the protective
grounding conductor for line power. lf necessary, connect an
equipotential bonding conductor to the balance.