Active Summing Load Cell Junction Box (JBA)
- Sums the outputs from up to 4 x 350-1000 Ohm strain gauge load cells
- Individual gain adjustment provided for each channel
- No interaction between offset and gain
- No interaction between channels during calibration
- Simplifies installation of multi-cell platforms, silos, tanks and hopper weighing systems
- Wide input range - from 0.5 to 20 mV/V
- Supplied as Bulkhead (JBA as shown in main photo above), DIN rail mounted (D3) or PCB (JPA) version (shown in photos on left)
The JBA Load Cell Junction Box is an active summing junction box for up to four load cells.
The JBA Summing Load Cell Junction Box is 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 Load Cell Junction Box with Fault Monitoring, model LCI
| 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 |
Documents
Software
No relevant software available
Product order options
The model JBA is supplied pre-mounted in a IP65 / NEMA4 ABS housing but is also available as a PCB module (model JPA).
For alternative housings, select model JPA and then select the desired housing from the list below.
| Mounting Enclosure | Code |
|---|---|
| Case and DIN Rail Mounting for DSJ4, LCA, UAB, JBA | D3 |
| Accessories | Code |
| Load Cell Active Junction Box | JBA |
| Load Cell Active Junction Box PCB (only) | JPA |
