Laboratory scales for various weighing applications
As the name "laboratory balance" already suggests, these are balances that are mainly used in the laboratory.
They can be divided into:
- Microbalances
- Analytical balances
- Precision balances
- Precision balances / Compact laboratory balances
With the help of analytical balances, solid and liquid substances can be examined and checked. Accuracies in the microgram range are not uncommon. With these special laboratory balances, even fine dust particles in the air or the density of liquids can be measured, for example. Microbalances with an accuracy of 0.001 mg (1µg) have a highly precise nominal load range over which the finest particles can be detected. Precision scales are often used in the industrial sector. Here the focus is - as the name suggests - on particular precision and accuracy. They are often used for quality assurance or for weighing masses up to 12 kg. When choosing a scale, make sure that the higher the nominal load range, the "coarser" the determined result. The scale interval defines the readability. Another important factor is repeatability or traceability. Precision scales can be divided into scales with internal and external calibration.
Precision scales can be divided into scales with internal and external calibration.
Precision scales with electromagnetic force compensation EM
| Analytical scales LB-MA | Precision balance LB-MW | Precision balance LB-MC | Precision balance LB-MK |
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Measuring principle |
Electromagnetic force compensation |
Adjustment |
Internal calibration |
Max (g) |
120 | 250 | 310 |
520 | 1.200 | 2.100 |
520 | 720 | 1.000 | 1.200 |
4.200 | 5.200 | 6.200 |
Readability, (g) |
0,0001 |
0,001 => 1 mg |
0,001 => 1 mg |
0,01 |
Loadplate (mm) |
Ø 80 mm |
Ø 110 mm |
Ø 110 mm |
Ø160 mm |
Repeatability (g) |
0,0001 |
0,001 |
0,001 |
0,01 |
Linearity (g) |
± 0,0003 |
± 0,002 | 0,003 | 0,005 |
± 0,002 | 0,002 | 0,003 | 0,003 |
± 0,03 |
Settling time (sec.) |
≤ 4 |
≤ 2 | ≤ 3 | ≤ 3 |
≤ 2 | ≤ 2 | ≤ 3 | ≤ 3 |
≤ 2 | ≤ 3 | ≤ 3 |
Compact precision scales with external calibration and load cell technology
| Precision balance LB-SC | Precision balance LB-SK | Precision balance LB-SQ |
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Measuring principle |
Strain gauge load cell |
Adjustment |
External calibration |
Max (g) |
210 | 310 | 420 |
1.000 | 2.200 | 3.200 | 4.200 |
3.200 | 5.200 | 6.500 |
Readability, d (g) |
0,001 => 1 mg |
0,01 |
0,1 |
Loadplate (mm) |
Ø 80 |
Ø 130 |
140 x 150 |
Repeatability (g)
|
0,001 |
0,01 |
0,05 |
Linearity (g) |
± 0,003 | 0,003 | 0,004 |
± 0,03 |
± 0,2 |
Settling time (sec.) |
≤ 3 |
≤ 3 |
≤ 2 |
High-load precision scales with external calibration
| Precision scales LB-MR | Precision scales LB-LR |
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|
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Measuring principle |
Electromagnetic force compensation |
Strain gauge load cell |
Adjustment |
External calibration |
Max (g) |
6.200 | 8.200 | 10.100 | 12.100 |
8.000 | 16.000 | 25.000 | 32.000 |
Readability, d (g) |
0,01 |
0,1 |
Loadplate (mm) |
175 x 195 |
220 x 320 |
Repeatability (g) |
0,01 |
0,1 |
Linearity (g) |
± 0,03 |
± 0,03 |
Settling time (sec.) |
≤ 4 |
≤ 3 |