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JBA Junction Box Active
- Sums the outputs from up to 4 x 350 -1,000 O hm strain gauge load cells
- Individual gain adjustment provided for each channel
- Wide input range - from 0.5 to 20 mV/V
- No interaction between channels during calibration
- No interaction between offset and gain
- Waterproof to IP656 NEMA4
This active summing load cell junction box JBA is an active summing junction box for up to four load cells.
The JBA has an active summing junction circuit that accepts inputs from any strain gauge based sensor (load cell, force sensors, pressure sensor, torque sensor) and applies individual gain adjustment before combining them to provide a calibrated and summed output.
For a simple summing circuit with no trimming and no corner compensation, use the passive load cell junction board, model JPP and for fault monitoring and fault detection alarm features, use the , LCI load cell junction box with fault monitoring alarm.
| JBA | |
|---|---|
| Powering | from 10V nomial excitation |
| Maximum current | 20mA |
| Connection | 6 wire from instrument to JBA. 4 wire from JBA to each Strain Gauge |
| Gain setting per channel | Variable from 0.2 to 1.0 by use of switch and potentiometer, see JBA Product Sheet |
| Note: | |
| Each Strain Gauge is added, therefore the output is the summeration of all the Strain Gauges connected, eg: 4 x 2mV/V Strain Gauges will give an output of 8mV/V when set to x 1 20mV/V (nominally 200mV) | |
| Maximum input voltage | 90 day accuracy stability ±0.06% gain |
| Effect of temperature | ±0.02% per degree C typical at 2.5mV/V |
| Field terminals | 35 degree screw operated cage clamp type |
| Maximum cable | size 2.5mm square |
| Environmental | |
| CE Environmental Approvals | European EMC Directive 2004/108/EC, Low Voltage Directive 2006/95/EC |
DIMENSIONS-See Downloads Tab and Select JBA Instructions
Documents
- Q: What is the maximum current for the JBA?
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A: 20 mA