Analog DC to DC Signal Conditioners, Converters,  Isolators, Transmitters

lifetime warranty
  • Lifetime Warranty on API Modules
  • LoopTracker ® LEDs
  • Hot-Swappable Plug-In Design
  • Zero and Span Output Calibration
  • Push to Test Output
  • Full I/O/Power Isolation

Click on PDF links below
for product information

How to Order

  1. Select a model
  2. See data sheet for ordering info and options
  3. Note that options affect pricing
  4. Request a quote via chat or call us
  5. 2-5 day typical lead time + shipping time
  6. 5-10 day lead time for quantities of 5 or more + shipping time
  7. To place your order
Model
Input/Output
Features
Product

DC to DC Isolated Signal Conditioners


Factory Configured
API 4300 G  from $299

Open Datasheet
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API 4300 G
Specify input range
Factory configured
0-100 mVDC to 0-500 VDC
±100 mVDC to ±10 VDC
0-100 μADC to 0-900 mADC
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
  • Hot-swappable plug-in design
  • Replaces Action AP 4300
  • I/O LoopTracker LEDs
  • Output test button
  • Full I/O/power isolation
  • 18 V loop power supply
  • Uses API-008 8-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


API 4300 G UL listed
API 4300 G

Low Range DC to DC Isolated Signal Conditioners


Factory Configured
API 4310 G  from $329

Open Datasheet
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API 4310 G Narrow/Low Input
Specify input range
Factory configured
0-10 mV to 0-100 mV
±10 mV to ±100 mV
0-100 μA to 0-1 mA
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 reversal available
  • Hot-swappable plug-in design
  • Replaces Action AP 4310
  • I/O LoopTracker LEDs
  • Output test button
  • Full I/O/power isolation
  • 18 V loop power supply
  • Uses API-008 8-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


Api 4310 G UL listed
API 4310 G

DC to DC Isolated Signal Conditioner


Factory Configured
APD 4300  from $309

Open Datasheet
Download Datasheet
APD 4300
Specify input range
0-100 mVDC to 0-300 VDC
±100 mVDC to ±10 VDC
0-1 mADC to 0-1000 mADC, 4-20 mA
Specify output range
Factory configured
0-1 V to 0-20 V
±1 V to ±10 V
0-1 mA to 0-20 mA, 4-20 mA
I/O reversal available
APD 4300 PLC
Input range: 4-20 mA
Output range: 4-20 mA
  • Removable plugs
  • I/O LoopTracker LEDs
  • Output test button
  • Output test terminals for manual override capability
  • Full I/O/power isolation
  • Selectable I/O sink/source
  • 15 V input loop power supply
  • 20 V output loop power supply
  • Universal power 85-265 VAC, 60-300 VDC
  • D option for 9-30 VDC, 10-32 VAC power
  • Correct sink-sink or source-source mismatches
  • Isolate single-ended inputs
  • Eliminate PLC/DCS ground loops
  • Use with Allen Bradley, GE/Fanuc, IDEC,
    Omron, Mitsubishi, Modicon, Siemens,
    Panasonic, Honeywell analog inputs

APD 4300 UL approved
APD 4300

DC to DC Isolated Signal Conditioner


Field Selectable Minuteman Setup


API 4380 G  from $299

Open Datasheet
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24 Field configurable inputs
0-50 mV to 0-10 V
±5 V, ±10 V
0-1 mA to 0-20 mA, 4-20 mA
16 Field configurable outputs
0-1 V to 0-10 VDC
±5 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA

  • Minuteman one-minute setup
  • Hot-swappable plug-in design
  • Replaces Action AP4380, Wilkerson MM4380
  • I/O LoopTracker LEDs
  • Output test button
  • Full I/O/power isolation
  • 18 V loop power supply
  • Uses API-008 8-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 4380G UL listed
API 4380 G

DC to DC Isolated Signal Conditioner


Field Selectable Minuteman Setup


APD 4380  from $309

Open Datasheet
Download Datasheet
53 field configurable input ranges
0-10 mVDC to 0-130 VDC
±5 mV to ±65 VDC
0-200 μA to 0-50 mADC
18 Field configurable output ranges
0-1 V to 0-10 VDC
±5 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA
  • Minuteman one-minute setup
  • Removable plugs
  • I/O LoopTracker LEDs
  • Output test button
  • Full I/O/power isolation
  • Selectable I/O sink/source
  • 15 V input loop power supply
  • 20 V output loop power supply
  • Universal power 85-265 VAC, 60-300 VDC
  • D option for 9-30 VDC, 10-32 VAC power

APD 4380 UL approved
APD 4380

High Accuracy DC to DC Isolated Signal Conditioner


Field Programmable


APD 4381  from $395

Open Datasheet
Download Datasheet
54 field configurable input ranges
0-50 mVDC to 0-10 VDC
±25 mV to ±10 VDC
0-500 μA to 0-20 mADC
Custom input range available
18 field configurable output ranges
0-1 V to 0-10 VDC
±5 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA
  • Covers all common DC sensors
  • Removable plugs
  • I/O LoopTracker LEDs
  • Output test button
  • Full I/O/power isolation
  • Selectable I/O sink/source
  • 15 V input loop power supply
  • 20 V output loop power supply
  • Universal power 85-265 VAC, 60-300 VDC
  • D option for 9-30 VDC, 10-32 VAC power
  • For orders of 5 or more, call us for lead times

APD 4381 UL approved New!
APD 4381

DC to DC Isolated Signal Conditoner


Field Selectable Minuteman Setup


API 4385 G  from $329

Open Datasheet
Download Datasheet
24 field configurable inputs
-50-0 mVDC to 0-20 VDC, 20-40 VDC
0-200 μADC to 0-40 mADC, 10-50 mADC
Selectable zero offset
16 field configurable outputs
0-1 V to 0-10 V
±5 V, ±10 V
0-2 mA to 0-20 mA, 4-20 mA
  • Minuteman one-minute setup
  • Hot-swappable plug-in design
  • I/O LoopTracker LEDs
  • Output test button
  • Full I/O/power isolation
  • 18 V loop power supply
  • Uses API-008 8-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 4385G UL listed
API 4385 G

DC to DC Isolated Signal Conditoner
High Voltage DC Input


Field Selectable Minuteman Setup


API 4380 GHV3  from $379

Open Datasheet
Download Datasheet
24 field configurable inputs
0-1 VDC to ±200 VDC
16 field configurable outputs
0-1 V to 0-10 V
±1 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA
  • Minuteman one-minute setup
  • Hot-swappable plug-in design
  • I/O LoopTracker LEDs
  • Output test button
  • Full I/O/power isolation
  • Uses API-008 8-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 4380 GHV UL listed
API 4380 GHV3

DC to DC Isolated Signal Conditoner
High Voltage DC Input


Field Selectable Minuteman Setup


APD HV-DC   from $395

Open Datasheet
Download Datasheet
8 selectable input ranges
7 standard plus 1 factory set
0-100 VDC to 0-1200 VDC, and custom
specify custom range if required (2000 VDC max.)
18 selectable output ranges
0-1 V to 0-10 V,
±5 V, ±10 V,
0-2 mA to 0-20 mA, 4-20 mA,
  • I/O LoopTracker LEDs
  • Output test button
  • Full I/O/power isolation
  • DIN rail mount
  • 22.5 mm wide
  • Universal power 85-265 VAC, 60-300 VDC
  • D option for 9-30 VDC, 10-32 VAC power

APD HV-DC
APD HV-DC

IsoSplitter® Signal Splitter
1 DC Input to 2 DC Outputs


Factory Configured
APD 4930  from $309

Open Datasheet
Download Datasheet
Open Features
Download Features
Specify input range
0-10 mVDC to 100 VDC
±50 mV to ±10 VDC
0-1 mADC to 0-50 mADC, 4-20 mADC
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
  • Removable plugs
  • Output LoopTracker LEDs
  • Selectable sink/source mA input
  • 15 V input loop power supplies
  • Sourcing mA output (sinking optional)
  • 20 V output loop power supplies
  • Sinking mA outputs optional
  • Output test/manual override terminals
  • Full I/O/power isolation
  • DIN rail mount
  • 22.5 mm wide
  • Universal power 85-265 VAC, 60-300 VDC
  • D option for 9-30 VAC/VDC power

APD 4930 IsoSplitter new
APD 4930 DC IsoSplitter

IsoSplitter® Signal Splitter
1 DC Input to 2 DC Outputs


Factory Configured
APD 4393  from $475

Open Datasheet
Download Datasheet
Specify input range
Factory Configured
0-10 mVDC to 100 VDC
±50 mV to ±10 VDC
0-1 mADC to 0-50 mADC, 4-20 mADC
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
  • Removable plugs
  • I/O LoopTracker LEDs
  • Selectable sink/source mA input
  • 15 V input loop power supplies
  • Selectable sink/source mA output
  • 20 V output loop power supplies
  • Output test button
  • Full I/O/power isolation
  • DIN rail mount
  • 45 mm wide
  • Universal power 85-265 VAC, 60-300 VDC
  • D option for 9-30 VAC/VDC power

Api 4393 DIN UL approved
APD 4393 DC IsoSplitter

Universal Input to DC Isolated Signal Conditioner


Field Programmable


APD 8000  from $399

Open Feature Summary
Download Feature Summary
Open Datasheet
Download Datasheet
Field configurable inputs
DC volts: 35 ranges from ±25mVDC to ±10 VDC
DC mA sinking input, 20 ranges from ±0.5mADC to ±20mADC
Potentiometer: 100Ω min. to 1 MegaΩ max.
Thermocouple: J, K, T, E, R, S, N, B, C, D, G, M, P
RTDs: 2, 3, or 4 wire, 10Ω to 8000Ω RTDs
Thermistor: 44000 series, YSI 400, Spectrum
Custom input available
18 field programmable output ranges
Voltage: 0-1V, 0-2V, 0-4V, 0-5V, 1-5V, 0-8V, 0-10V, 2-10V,
±5V, ±10V
Current: 0-2mA, 0-4mA, 0-8mA, 0-10mA, 2-10mA, 0-16mA,
0-20mA, 4-20mA
Can be wired for sink or source
  • Switch and pushbutton setup
  • Removable plugs
  • Input LoopTracker LED
  • Output test button
  • Full I/O/power isolation
  • Selectable output sink/source
  • 20 V output loop power supply
  • Universal power 85-265 VAC, 60-300 VDC
  • D option for 9-30 VDC, 10-32 VAC power
  • For orders of 5 or more, call us for lead times

APD8000 UL approved new!
APD 8000

DC to DC Isolated Signal Conditioner


Field Configurable


K109UI  $169 *more coming 1-2 weeks*

Open Datasheet
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Open Installation Manual
Download Installation Manual
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Field Configurable Input
Input: 0-20 mA, 4-20 mA,
0-5 VDC, 1-5 VDC, 0-10 VDC, 2-10 VDC,
0-15 VDC, 0-30 VDC
Field Configurable Output
Output: 4-20 mA, 0-20 mA, 20-4 mA, 20-0 mA,
0-5 V, 1-5 V, 0-10 V, 10-0 V
  • Only 6.2 mm wide
  • DIP switch configuration
  • Full 3-way isolation
  • Low cost
  • DIN rail mount without tools
  • Power: 19.2-30 VDC or K-SUPPLY+KBUS

UL Listed CE logo
K109UI
K109UI

DC to DC Isolated Transmitter
with Sink/Source Input


Field Configurable


K109S  $169 *in stock*

Open Datasheet
Download Datasheet
Open Installation Manual
Download Installation Manual
Click to see ALL Seneca products
Field Configurable Input
Input: 4-20 mA, 0-20 mA, 20-4 mA, 20-0 mA,
0-5 V, 1-5 V, 0-10 V, 10-0 V
Field Configurable Output
Output: 4-20 mA, 0-20 mA, 20-4 mA, 20-0 mA,
0-5 V, 1-5 V, 0-10 V, 10-0 V
  • Only 6.2 mm wide
  • DIP switch configuration
  • Full 3-way isolation
  • Low cost
  • DIN rail mount without tools
  • Power: 19.2-30 VDC or K-SUPPLY+KBUS

UL Listed CE logo
K109S
K109S

Universal Input to 4-20 mA Loop Powered Transmitter


Field Programmable


K121  $149 *in stock*

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Open Installation Manual
Download Installation Manual
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Field Programmable Input
Input: –150 mV to +150 mV
–30 V to +30V
–24 mA to 24 mA
RTD: Pt100, Pt500, Pt1000, Ni100
Thermocouple: J, K, T, E, R, S, B, N
Potentiometer: 500 Ω to 10 KΩ
Resistance: 1750 Ω
Output: 4-20 mA loop powered
Powered by the output loop
  • Only 6.2 mm wide
  • PC programmable configuration
  • Full 2-way isolation
  • Low cost
  • DIN rail mount without tools
  • Powered by 4-20 mA loop

  • CE logo new EX
K121
K121

DuoPak ® 2 Channel Isolated Signal Conditioners


Factory Configured
APD 2000 Series  from $519

Specify input range for each channel
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
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
DuoPak UL approved
APD 2000 Series DC

DC to DC Signal Conditioners
Math Functions


Factory Configured
API 4400 G - API 4408 G  from $329

Open Datasheet
Download Datasheet
API 4400 G: (A+B+C+D)/4
API 4401 G: (A+B+C)/3
API 4402 G: (A+B)/2
API 4403 G: (A+B+C–D)/3
API 4404 G: (A+B–C–D)/2>
API 4405 G:  A–B–C–D
API 4406 G: (A+B–C)/2
API 4407 G:  A–B–C
API 4408 G:  A–B
Specify input ranges
Factory configured
Input negative is common
0-100 mV to 0-10 V
±100 mV to ±10 V
0-1 mA to 0-20 mA, 4-20 mA
Specify output range
Factory configured
0-1 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA
  • Hot-swappable plug-in design
  • Direct replacements for Action AP 4400 series
  • I/O LoopTracker LEDs
  • Output test button
  • Full I/O/power isolation
  • 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 4400G
API 4400 G to API 4408 G

Head-Mount Universal Transmitter, Isolated


Field Programmable


Fits DIN Form B Heads
T121  $159 *in stock*

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Open Installation Manual
Download Installation Manual
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Programmable
Input: Pt100 or Ni100, Pt500, Pt1000
J, K, R, S, T, B, E, N
Potentiometer
mVDC, VDC
Selectable Output
Output: 4-20 mA, 20-4 mA
  • Order T121-C for pre-programmed I/O
  • 44 mm dia
  • EASY-USB configuration
  • I/O isolation
  • Low cost
  • DIN B with 5.8mm (0.228"dia) center hole
  • Power: 7 to 30 VDC current loop

T121 CE logo new
T121
Programming kitK121
K121
Includes
Converter
Software mini CD (or download latest)
Adapter cable (std USB cable not included)
EASY-USB
EASY-USB

4 Digit 4-20 mA Loop Powered Display


Field Rangeable


S315  $139 *in stock*
S315-IP66  $300

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Download Datasheet
Open Installation Manual
Download Installation Manual
Click to see ALL Seneca products
Loop Powered Display
Input: 4-20 mA
Display: 4 digit red LED
  • 1/8 DIN panel mount or IP66 housing
  • Scaleable 4 digit display

CE logo new!
S315
S315
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