KERN FTB Service Manual

Also see for FTB: Operating instructions Operating instructions

Contents

KERN FTB Service Manual Manual pdf 60 page image

FTx/ITx-SH-e-0720 618 Additional information8.1 Technical data and tolerances8.1.1 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 3 kg 6 kg 15 kg 35 kg 60kgWeighing range (1/2) [g] 1500/3000* 3000/6000* 6000/15000* 15000/35000* 30000/60000*Resolution 2 x 3000e 2 x 3000e 2 x 3000e 2 x 3000e 2 x 3000eCertification class III III III III IIIReadability (weighing range 1/2) [g] 0.5/1 1/2 2 5/10 10/20Linearity [g] +/–0.05 +/–0.1 +/–0.2 +/–0.5 +/–1+/–0.15** +/–0.2** +/–0.2** +/–0.5** +/–1**Repeatability s [g] 0.05 0.1 0.2 0.5 10.15** 0.1** 0.2** 0.5** 1**Calibration weight full loac 1) [kg] 3 6 15 35 60Repeatability minimum 1) [kg] 0.1 0.1 0.2 0.4 0.6Weight class M1 M1 M1 M1 M1Corner load test weight [kg] 1 2 5 12 20Corner load tolerance [g] 1 2 5 10 20Overload stop fixed, not adjustable fixed, not adjustable fixed, not adjustable fixed, not adjustable fixed, not adjustableCorner load stop fixed, not adjustable fixed, not adjustable fixed, not adjustable fixed, not adjustable fixed, not adjustable* 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 linearityThe linearity of certified or certifiable scales must be verified at 0%, 50% and 100% of the full load. Tolerances are givenin the following calibration diagrams.If there are not enough test weights available toverify the linearity at 0%, 50% and 100% of the fullload, then the preset values can be changed.1) Note on calibrationCertified/certifiable scales should be calibrated underfull load. For the limits of permissible calibrationerrors for each weighing range, refer to the diagramson 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 21 2 3 4 5 6321g-1-2-3kg45678-4-5-6-7-8g8 8 9 10 11 12 13 14 15