Absolute Process Instruments API 4058 G _ Bridge, strain gauge, load cell transmitter. Non-isolated.
Features:
- Drive up to Four 350 Ω Bridges
- Adjustable Excitation Power Supply
- One Minute Setup for Hundreds of I/O Ranges
- Easy-to-use External Switches for Setup
- Hot-Swappable Plug-In Design
- Input and Output LoopTracker® LEDs
- Output Test or Calibration Resistor Options
Applications:
- Load Cell Weighing Systems and Scales
- Strain Gauge Pressure Sensors and Transducers
- Tanks, Scales, Extruder Melt Pressure, Crane Loads
The API 4058 G accepts a strain gauge, bridge, load cell, or a summed input from up to four sensors, and provides a proportional, non-isolated DC voltage or current output. It includes filtering and processing to allow effective use of lowlevel transducers in the noisy environments found in industrial applications. The output is not electrically isolated.
The built-in 115 mA bridge excitation power supply generates a stable source of excitation voltage to drive from one to four 350 W (or greater) bridge type sensors such as load cells, pressure transducers and strain gauges The API 4058 G amplifies and converts the resulting millivolt signal into the selected output.
Input, output, excitation, and zero offset are field configurable, via external rotary and slide switches. Common ranges are on the module label. An offset switch is standard for applications requiring cancellation of sensor offsets or non-zero deadweights (taring). Zero and span potentiometers allow calibration of the output.
LoopTracker
API exclusive features include two LoopTracker LEDs (green for input, red for output) that vary in intensity with changes in the process input and output signals. These provide a quick visual picture of your process loop at all times and can greatly aid in saving time during initial startup and/or troubleshooting.
Output Test
An API exclusive feature includes the test button to provide a fixed output (independent of the input) when held depressed. The output test button greatly aids in saving time during initial startup and/or troubleshooting. The test output level is potentiometer adjustable from 0 to 100% of output span. A calibration resistor switch replaces the test button.
Mounting
The API 4058 G plugs into an industry standard 11-Pin octal socket sold separately. Sockets API 011 and finger-safe API 011 FS allow either DIN rail or panel mounting.
Specifications Table:
| Input | One to Four 350 W Sensors, 0-5 mV to 0-1200 mV, 4-10 VDC Excitation |
| Output | 0-1 V to ±10 V or 0-1 mA to 4-20 mA, Non-Isolated |
| Strain Gauge Input Range |
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| Input Impedance | 1 MΩ typical |
| Common Mode Rejection | 100 dB minimum |
| Excitation Voltage |
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| DC Output Ranges |
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| Output Calibration | Multi-turn zero and span potentiometers (±15% of span adjustment range typical) |
| Zero Offset | ±100% of span in 15% increments |
| Output Test | Adjustable 0-100% of span |
| Output Ripple and Noise | Less than 10 mVRMS |
| Linearity | Better than ±0.1% of span |
| Ambient Temperature Range and Stability |
|
| Response Time | 150 milliseconds typical 6.6 Hz (Contact factory for faster response times) |
| Housing and Sockets |
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| Power | 115 VAC ±10%, 50/60 Hz, 2.5 W max |
