Additional Information; Technical Data And Tolerances - KERN FTB Service Manual

8

Additional information

8.1

Technical data and tolerances

8.1.1 Certifiable and certified compact scales with strain gauge load cells (standard)
The following data apply to all certifiable or certified compact scales with strain gauge load cells.
Scale capacity
Weighing range (1/2)
Resolution
Certification class
Readability (weighing range 1/2)
Linearity
Repeatability s
Calibration weight full loac 1)
Repeatability minimum 1)
Weight class
Corner load test weight
Corner load tolerance
Overload stop
Corner load stop
* with approved scales the overload display may only appear when the load is more then 9d above the maximum load
** for scales with IP65 protection degree (FTB)
Note on linearity
The linearity of certified or certifiable scales must be verified at 0%, 50% and 100% of the full load. Tolerances are given
in the following calibration diagrams.
If there are not enough test weights available to
verify the linearity at 0%, 50% and 100% of the full
load, then the preset values can be changed.
1) Note on calibration
Certified/certifiable scales should be calibrated under
full load. For the limits of permissible calibration
errors for each weighing range, refer to the diagrams
on the next page and the example below:
Example: Maximum permissible errors for 15 kg
(Weighing range 1: 6 kg / 2 g)
(Weighing range 2: 15 kg / 5 g)
– – – – – Maximum permissible errors for decreas-
ing load in weighing range 2
FTx/ITx-SH-e-0720
3 kg
[g] 1500/3000*
2 x 3000e
III
[g] 0.5/1
[g] +/–0.05
+/–0.15**
[g] 0.05
0.15**
[kg] 3
[kg] 0.1
M1
[kg] 1
[g] 1
fixed, not adjustable fixed, not adjustable
fixed, not adjustable fixed, not adjustable
6 kg 15 kg
3000/6000* 6000/15000*
2 x 3000e 2 x 3000e
III III
1/2 2
+/–0.1 +/–0.2
+/–0.2** +/–0.2**
0.1 0.2
0.1** 0.2**
6 15
0.1 0.2
M1 M1
2 5
2 5
fixed, not adjustable
fixed, not adjustable
g
8
7
6
5
4
3
2
1
1 2 3 4 5
-1
-2
-3
-4
-5
-6
-7
-8
g
35 kg
15000/35000*
2 x 3000e
III
5/10
+/–0.5
+/–0.5**
0.5
0.5**
35
0.4
M1
12
10
fixed, not adjustable fixed, not adjustable
fixed, not adjustable fixed, not adjustable
6 8 8 9 10 11
60kg
30000/60000*
2 x 3000e
III
10/20
+/–1
+/–1**
1
1**
60
0.6
M1
20
20
12 13 14 15 kg
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