lifetime warranty
  • Any Two Inputs
    (AC, DC, Pot, RTD, Strain, Frequency)
  • Any Two DC Outputs
  • Lifetime Warranty on API Modules
  • LoopTracker ® I/O LEDs
  • Hot-Swappable Plug-In Design
  • Zero and Span Output Calibration
    for Each Channel
  • Push to Test Output
  • Full I/O/Power Isolation
Click on PDF links below
for product information

Literature and Links

API product brochure
Options & accessories
Regulatory Compliance page

UL Approvals

API modules USA
API modules Canada

APD modules USA
APD modules Canada

Reference Info

Ground Loops
LoopTracker and Output Test
Sink vs Source


Monitoring a station battery
Isolate level xmtr, radio modem, and PLC
Isolate pH and ORP sensors

DuoPak ® 2 Channel
Isolated Signal Conditioners

Factory Configured
APD 2000 Series  from $569

Specify input range for each channel
Factory configured
APD 2000 Ch1: DC mV/V/mA Ch2: DC mV/V/mA
APD 2001 Ch1: DC mV/V/mA Ch2: RTD
APD 2003 Ch1: DC mV/V/mA Ch2: Potentiometer
APD 2005 Ch1: DC mV/V/mA Ch2: Strain gauge
APD 2006 Ch1: DC mV/V/mA Ch2: AC mV, V, mA
APD 2007 Ch1: DC mV/V/mA Ch2: Frequency
APD 2011 Ch1: RTD Ch2: RTD
APD 2013 Ch1: RTD Ch2: Potentiometer
APD 2015 Ch1: RTD Ch2: Strain gauge
APD 2016 Ch1: RTD Ch2: AC mV/V/mA
APD 2017 Ch1: RTD Ch2: Frequency
APD 2033 Ch1: Potentiometer Ch2: Potentiometer
APD 2035 Ch1: Potentiometer Ch2: Strain gauge
APD 2036 Ch1: Potentiometer Ch2: AC mV/V/mA
APD 2037 Ch1: Potentiometer Ch2: Frequency
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
APD 2066 Ch1: AC mV/V/mA Ch2: AC mV/V/mA
APD 2067 Ch1: AC mV/V/mA Ch2: Frequency
APD 2077 Ch1: Frequency Ch2: Frequency
Specify output range for each independent DC output channel
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

Phone: 800-942-0315 or 847-918-3510    Fax: 800-949-7502 or 847-968-4891
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