Model 314

The electrical force transducers of the model series TesT 314 are made of special steel. The measuring element is built as a shear force sensor. For QA tasks they are used both, permanently and occasionally. The model 314 is especially suitable for force measurements at spot-welding machines. The small distances between the welding electrodes have been considered for the design. Measurements can be performed even when the welding current is turned on because the measuring element is isolated from the other parts.

The Evaluation Electronics 813 is always included in scope of delivery for model 314.

Electrical Force Transducers – Model 314

• Capacities: 2kN bis 30kN
• For compression
• At spot-welding machines
• Special steel
• High accuracy
• Sensitivity: 2mV/V
• Robust
• Maintenance-free
• For mobile applications
• TEDS module integrated
• Incl. Evaluation Electronics

The electrical force transducers of the model series 314 are made of special steel. Their measuring element is built as a shear force sensor. They are particularly used forforce measuring at spot-welding machines as well as for ongoing QA tasks. Measurements are also feasible even when the welding current is turned on because the measuring element is isolated from all other parts. A TEDS module is already integrated into the sensor. The evaluation electronics 813 is included in scope of delivery.

Model 314
>> Technical data according to VDI / VDE directive 2638

• Zero signal when removed S0 mV/V 0,02
• Rated characteristic value Cnom mV/V 2
• Relative error of characteristic value dC % ≤ ± 0,1
• Relative linearity error dlin % ≤ ± 0,05
• Relative repeatability error in unchanged mounting position brg % ≤ ± 0,03
• Combined error Fcomb % ≤ ± 0,1
• Reference temperature Tref °C 21
• Rated temperature range BT, nom °C -10…+40
• Operating temperature range BT, G °C -15…+60
• Storage temperature range BT, S °C -20…+70
• Relative creep after 30 min K0,5 % ≤ ± 0,06
• Relative creep after 8 h K8 % ≤ ± 0,018
• Temperature effect on characteristic value per 10K TKC % ≤ ± 0,05
• Temperature effect on zero signal per 10K TK0 % ≤ ± 0,05
• Input resistance Re Ω 1025 ± 25
• Output resistance Ra Ω 1000 ± 2
• Insulation resistance Ris GΩ > 5
• Max. excitation voltage U V 15
• Rated range of excitation voltage BU, nom V 5…10
• Limit force FL % ≤ 150
• Breaking force FB % ≥ 250
• Max. permissable dynamic load 2) Ldy % ≤ 50
• Degree of protection acc. to DIN 60529 IP65