Alarms, Amplifiers, and Transmitters for Strain Gauge, Bridge, Pressure Transducer or Sensor, Load Cell Applications

  • 6 Year Warranty on API Modules
  • LoopTracker® I/O LEDs
  • Hot-Swappable Plug-In Design
  • Zero and Span Xmtr Output Calibration
  • Push to Test Output
  • Full I/O/Power Isolation
Amplifiers for
  • Load Cells and Stain Gauges
  • Weighing Systems
  • Pressure Transducers and Sensors
  • Wheatstone Bridges
  • Force Transducers and Sensors


Click on PDF links below
for product information
Links
Product brochure
Options & accessories
Regulatory compliance

Reference Info
Troubleshooting strain gauge sensors
LoopTracker and Output Test
Sink vs source

Application Notes
Chemical plant
Platform scale
Truck scale
Dispensing system automation
6-Wire strain gauges
Pressure sensor vs. pressure transmitter
Pressure transducer calibration
Weighing shipping containers
Pressure system calibration
Pressure transducer calibration
Plastic extruder pressure
Extrudung guitar strings
Custom product for high speed pill presses
How to select your product
  • Open pdf datasheet for your model
  • Select model, range, units, options, accessories
  • Contact us if you need assistance
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Model Input/Output Features Product

Isolated DC Amplifier for One Sensor:

  • Load Cell
  • Pressure Transducer or Sensor
  • Strain Gauge
  • Bridge
  • Force Transducer or Sensor
Factory Configured

API 4051 G I  from $349

Open Datasheet
Download Datasheet
Specify input range
Factory configured
One 350 Ω stain gauge, load cell or bridge sensor
1 mV to 2000 mV
Accepts one sensor for input

Specify excitation voltage
4 to 10 VDC

Specify output range
Factory configured
0-1 V to 0-10 V
±1 V to ±10 V
0-1 mA to 0-20 mA, 4-20 mA

  • LoopTracker LEDs for input and output
  • Full I/O/power isolation
  • ReplacesAction AP 4051
  • Internal bridge excitation source
  • Output test button
  • Uses API-011 11-pin socket
  • 115 VAC powered
  • A230 option for 230 VAC
  • P option: 85-265 VAC, 60-300 VDC power (+$60)
  • D option: 9-30 VDC power (+$60)

Api 4051 GI
API 4051 GI

Isolated DC Amplifier for One Sensor:

  • Load Cell
  • Pressure Transducer or Sensor
  • Strain Gauge
  • Bridge
  • Force Transducer or Sensor
Factory Configured

APD 4051  from $389

Open Datasheet
Download Datasheet
Specify input range
Factory Configured
One 350 Ω stain gauge, load cell or bridge sensor
1 mV to 2000 mV
Accepts one sensor for input

Specify excitation voltage
Factory Configured
4 to 10 VDC, 30 mA max.

Specify output range
Factory Configured
0-1 V to 0-10 V
±1 V to ±10 V
0-1 mA to 0-20 mA, 4-20 mA

  • I/O LoopTracker LEDs
  • Full I/O/power isolation
  • Internal bridge excitation source
  • Drive one bridge
  • Output test button
  • DIN rail mount
  • 22.5 mm wide
  • Universal power 85-265 VAC, 60-300 VDC
  • Option D for 9-30 VDC, 10-32 VAC power

APD 4051UL approved
APD 4051