Strain Gauge, Bridge, Pressure Transducer, Load Cell Alarms, Amplifiers, and Transmitters

lifetime warranty
  • Lifetime 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
Click on model numbers below
for data sheets
Literature and Links

API product brochure

Options & accessories

Reference Info

Troubleshooting strain gauge sensors
LoopTracker and Output Test
Sink vs source
Alarm terminology
Deadband
Relay protection & EMI suppression

UL Approvals

API modules USA
API modules Canada

APD modules USA
APD modules Canada

Applications

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 Order
  1. Select a model
  2. See data sheet for ordering info and power options
  3. See Price list
  4. 2-5 day typical lead time (USA customers)
  5. To place your order
Model Input/Output Features Product
Strain Gauge Input Alarm Trip
DIN Style

APD 1500
APD 1520

Specify
strain gauge mV/V rating, mV range,
excitation voltage
Factory configured
100 Ω to 10000 Ω strain gauge
5 mV to 2000 mV
1-10 VDC excitation

APD 1500 Single Alarm Trip
Dual SPDT contact sets
Standard: HI alarm, non-latching, normal acting
See data sheet for alarm options

APD 1520 Dual Alarm Trip
2 independent SPDT contact sets
Standard: HI/LO alarms,
non-latching, normal acting
See data sheet for alarm options

  • User adjustable setpoint(s)
  • User adjustable deadband(s)
  • 8 Amp SPDT contacts
  • Input LoopTracker LED
  • Alarm status LEDs
  • Alarm options: LO, HI/HI, LO/LO
  • Optional reverse acting
  • Optional latching alarms
  • Push to test/reset
  • Remote push to test/reset
  • Full I/O/power isolation
  • Removable plugs
  • DIN rail mount without tools
  • Universal power 85-265 VAC, 60-300 VDC
  • D option for 9-30 VDC, 10-32 VAC power

APD 1500UL approved
APD 1500, APD 1520
Strain Gauge, Bridge, Load Cell to DC Signal Conditioners
Plug In Style

API 4051 G I

Specify input range
Factory configured
One 350 Ω stain gauge, load cell or bridge sensor
1 mV to 2000 mV

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
  • RepalcesAction 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 for 85-265 VAC, 60-300 VDC power
  • D option for 9-30 VDC power

Api 4051 GI
API 4051 GI
Strain Gauge, Bridge, Load Cell to DC Signal Conditioners
Factory Configured
DIN Style

APD 4051
Specify input range
One 350 Ω stain gauge, load cell or bridge sensor
1 mV to 2000 mV

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

Specify output range
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
Strain Gauge, Bridge, Load Cell to DC Signal Conditioners
Plug In Style
Non-Isolated
Field Selectable Minuteman Setup

API 4058 G

Field configurable Input
0-5 mVDC to 0-1200 mVDC

Field settable excitation voltage
0-10 VDC in 1 VDC steps, 115 mA max.

18 Field configurable outputs
0-1 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA
  • Minuteman one-minute setup
  • I/O LoopTracker LEDs
  • Internal bridge excitation source
  • Drive up to 4 bridges
  • Output test button
  • Uses API-011 11-pin socket
  • 115 VAC powered
  • A230 option for 230 VAC
  • P option for 85-265 VAC, 60-300 VDC power
  • D option for 9-30 VDC power



Api 4058G
API 4058 G
Strain Gauge, Bridge, Load Cell to DC Signal Conditioners
Field Selectable Minuteman Setup
DIN Style
Non-Isolated

APD 4058
Field configurable
0-5 mVDC to 0-1200 mVDC

Field settable excitation voltage
0-10 VDC in 1 VDC steps, 30 mA

18 Field configurable outputs
0-1 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA

  • Minuteman one minute setup
  • 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 4058UL approved
APD 4058
Strain Gauge, Bridge, Load Cell to DC Signal Conditioners
Plug In Style
Field Selectable Minuteman Setup

API 4059 G

Field configurable
0-5 mVDC to 0-400 mVDC, 120 mA

Field settable excitation voltage
0-10 VDC in 1 VDC steps

18 field configurable outputs
0-1 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA
Zero Offset (Tare) ±100% of span in 15% increments
  • Minuteman one-minute setup
  • I/O LoopTracker LEDs
  • Full I/O/power isolation
  • Internal Bridge Excitation Source
  • Drive up to 4 bridges
  • Output test button
  • Uses API-011 11-pin socket
  • 115 VAC powered
  • A230 option for 230 VAC
  • P option for 85-265 VAC, 60-300 VDC power
  • D option for 9-30 VDC power

Api 4059G
API 4059 G
Socket sold separately

Strain Gauge, Bridge, Load Cell to DC Signal Conditioners
Field Selectable Minuteman Setup
DIN Style

APD 4059

Field configurable
0-5 mVDC to 0-400 mVDC

Field settable excitation voltage
0-10 VDC in 1 VDC steps, 120 mA

18 field configurable outputs
0-1 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA
  • Minuteman one-minute setup
  • I/O LoopTracker LEDs
  • Full I/O/power isolation
  • Internal bridge excitation source
  • Drive up to 4 bridges
  • 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 4059UL approved
APD 4059
Strain Gauge, Bridge, Load Cell to DC Signal Conditioners
Field Selectable Minuteman Setup
Calibration Resistor Option
DIN Style

APD 4059CR
new
apd4059cr Field configurable input
0-5 mVDC to 0-400 mVDC

Field settable excitation voltage
0-10 VDC in 1 VDC steps, 120 mA
Use internal or external calibration resistor
Specify calibration resistor value if required

18 field configurable outputs
0-1 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA
Zero Offset (Tare) ±100% of span in 15% increments
  • Lifetime warranty
  • Minuteman one-minute setup
  • I/O LoopTracker LEDs
  • Full I/O/power isolation
  • Internal bridge excitation source
  • Drive up to 4 bridges
  • Calibrations switch
  • 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 4059UL approved
APD 4059CR
IsoSplitter® Strain Gauge Signal Splitters
One Strain Gauge Input to Two DC Outputs

Factory Configured
DIN Style

APD 5393

Specify input range
Factory configured for one 350 Ω (or greater)
strain gauge, load cell or bridge
Strain gauge mV range: 1 mV to 2000 mV
Specify mV/V or mV range
mV/V sensitivity X excitation voltage = total mV range

Specify excitation voltage
4 to 10 VDC excitation at 30 mA

Specify output range for each channel
2 independent channels
0-1 V to 0-20 V
±1 V to ±10 V
0-1 mA to 0-25 mA, 4-20 mA
  • One strain gauge input
  • Two independent DC output channels
  • I/O LoopTracker LEDs
  • Selectable sink/source mA output
  • 20 V output loop power supplies
  • Output test buttons
  • Full I/O/power isolation
  • Removable plugs
  • DIN rail mount
  • 45 mm wide
  • Universal power 85-265 VAC, 60-300 VDC
  • D for 9-30 VDC, 10-32 VAC power

Strain Gauge IsoSplitterUL approved
APD 5393 Strain Gauge IsoSplitter
DuoPak®
Two Channel Signal Conditioners

DIN Style

APD 2000 Series
Specify input range for each channel
Factory configured
APD 2005 Ch1: DC mV/V/mA Ch2: Strain gauge
APD 2015 Ch1: RTD Ch2: Strain gauge
APD 2035 Ch1: Potentiometer Ch2: Strain gauge
APD 2055 Ch1: Strain gauge Ch2: Strain gauge
APD 2056 Ch1: Strain gauge Ch2: AC mV/V/mA
APD 2057 Ch1: Strain gauge Ch2: Frequency

Specify output range for each channel
2 independent channels
0-1 V to 0-20 V
±1 V to ±10 V
0-1 mA to 0-25 mA, 4-20 mA
  • Optional I/O reversal
  • I/O LoopTracker LEDs
  • Selectable sink/source mA output
  • 20 V output loop power supplies
  • Output test buttons
  • Full I/O/power isolation
  • Removable plugs
  • DIN rail mount
  • 45 mm wide
  • Universal power 85-265 VAC, 60-300 VDC
  • D for 9-30 VDC, 10-32 VAC power

DuoPakUL approved
APD 2000 Series Strain Gauge
S315 and S315-IP66
4 Digit 4-20 mA Loop Powered Display

1/8 DIN

S315 and S315-IP66 datasheet

S315 and S315-IP66 installation
Loop Powered Display
Input: 4-20 mA
Display: 4 digit red LED

  • 1/8 DIN panel mount or IP66 housing
  • Scalable 4 digit display

CE logo  new!
S315
S315