Analog DC to DC Signal Conditioners, Converters, Isolators, Transmitters
- 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 belowfor product information
Literature and Links
API product brochure
Options & accessories
Cross reference
Regulatory Compliance page
UL Approvals
API product brochure
Options & accessories
Cross reference
Regulatory Compliance page
UL Approvals
API modules USA
API modules Canada
APD modules USA
APD modules Canada
Ground Loops
RFI / EMI
LoopTracker and Output Test
Sink vs Source
Applications
Monitoring motor speed with a PLC
Building heat SCR control
Manual override of computer control
Monitor pressure with a PLC
Control & monitor with one flow meter
Monitor product moved by conveyor
Pharmaceutical process validation
Dam bubbler
SCR drive voltage
Blower speed
DC motor voltage and current
DC motor current
Bindicator level xmtr to PLC
Contol conveyor material
Sewage pumping stations
Hydraulic fracking control
Anemometer interface to PLC
Special API4300 for engine speed
How to Order
- Select a model
- See data sheet for ordering info and options
- Note that options affect pricing
- Request a quote via chat or call us
- 2-5 day typical lead time + shipping time
- 5-10 day lead time for quantities of 5 or more + shipping time
- To place your order
- Call 800-942-0315 for credit card order
- Find your authorized representative
- Call us to find your local distributor
- Set up an account to use a purchase order
- Outside the USA?
Model
Input/Output
Features
Product
DC to DC Isolated Signal Conditioners
Factory Configured
API 4300 G from $329
Open Datasheet
Download Datasheet
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
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: 85-265 VAC, 60-300 VDC power (+$60)
- D option: 9-30 VDC power (+$60)
API 4300 G
Low Range DC to DC Isolated Signal Conditioners
Factory Configured
API 4310 G from $359
Open Datasheet
Download Datasheet
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
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: 85-265 VAC, 60-300 VDC power (+$60)
- D option: 9-30 VDC power (+$60)
API 4310 G
DC to DC Isolated Signal Conditioner
Factory Configured
APD 4300 from $339
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
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
DC to DC Isolated Signal Conditioner
Field Selectable Minuteman Setup
API 4380 G from $329
Open Datasheet
Download Datasheet
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: 85-265 VAC, 60-300 VDC power (+$60)
- D option: 9-30 VDC power (+$60)
API 4380 G
DC to DC Isolated Signal Conditioner
Field Selectable Minuteman Setup
APD 4380 from $339
Open Datasheet
Download Datasheet
APD 4381 High Accuracy from $395
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
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
DC to DC Isolated Signal Conditoner
Field Selectable Minuteman Setup
API 4385 G from $359
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 offset -100% to +100%
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
Non-interactive zero and span pots
-50-0 mVDC to 0-20 VDC, 20-40 VDC
0-200 μADC to 0-40 mADC, 10-50 mADC
Selectable offset -100% to +100%
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
Non-interactive zero and span pots
- Minuteman one-minute setup
- Selectable offset
- Non-interactive zero and span
- 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: 85-265 VAC, 60-300 VDC power (+$60)
- D option: 9-30 VDC power (+$60)
API 4385 G
DC to DC Isolated Signal Conditoner
High Voltage DC Input
Field Selectable Minuteman Setup
API 4380 GHV3 from $409
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
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: 85-265 VAC, 60-300 VDC power (+$60)
- D option: 9-30 VDC power (+$60)
API 4380 GHV3
DC to DC Isolated Signal Conditoner
High Voltage DC Input
Field Selectable Minuteman Setup
APD HV-DC from $429
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
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
DC-DC converter with 5KV Isolation
Factory Configured
HVI237 call for quote
Open Datasheet
Download Datasheet
Specify input type and range
1 to 100mADC
100 to 100VDC
100V to 2000VDC
0-5A true RMS
Option for electable ranges: +/-100mV, 100mV, +/-250mV, 0-250mV,
Option for electable ranges: 150 VAC, 300VAC true RMS
Specify output type and range
One or two outputs available (not isolated from each other)
4-20mA (specify sink or source)
0-10V
Custom output ranges
Customized response time 250µs to 5s, 500mS standard
1 to 100mADC
100 to 100VDC
100V to 2000VDC
0-5A true RMS
Option for electable ranges: +/-100mV, 100mV, +/-250mV, 0-250mV,
Option for electable ranges: 150 VAC, 300VAC true RMS
Specify output type and range
One or two outputs available (not isolated from each other)
4-20mA (specify sink or source)
0-10V
Custom output ranges
Customized response time 250µs to 5s, 500mS standard
- Convert a High Voltage signal to a DC output
- Front zero and span pots
- Output level LED
- Full I/O/power isolation
- Universal power options: 8 VDC to 280 VAC
HVI237
Process Signal to Bi-Polar DC Signal Converter
Factory Configured
BSC133 call for quote
BSC133 Data Sheet
BSC133 More Information
Specify input type and range
AC/DC current/millivolt/volts
pH/ORP
RTD
Thermocouple
Frequency to 5kHz
Pulse input from proximity sensor
LVDT
Potentiometer or resistance
Specify output type and range
Bi-polar volts; ±1V to ±20V
Bi-polar mA; ±1mA to ±20mA
Output Options
AC/DC current/millivolt/volts
pH/ORP
RTD
Thermocouple
Frequency to 5kHz
Pulse input from proximity sensor
LVDT
Potentiometer or resistance
Specify output type and range
Bi-polar volts; ±1V to ±20V
Bi-polar mA; ±1mA to ±20mA
Output Options
- Output ramp
- External ratio 0.5 - 1.5
- High current output
- Auxiliary supply 24VDC/25mA max
- External bipolar supply
- Peak hold (max. hold 120 min)
- Track and hold (max. hold 120 min)
- Load independent bi-polar output
- High power output & dither options for hydraulic applications
- Adder or subtractor options
- Output ramp, external ratio peak hold and track & hold options
- Sensor excitation
- Full I/O/power isolation
- Universal power options: 8 VDC to 280 VAC
- Signal conversion
- Hydraulic drive and solenoid actuation
BSC133
IsoSplitter® Signal Splitter
1 DC Input to 2 DC Outputs
Factory Configured
APD 4930 from $339
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
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 DC IsoSplitter
IsoSplitter® Signal Splitter
1 DC Input to 2 DC Outputs
Factory Configured
APD 4393 from $519
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
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
APD 4393 DC IsoSplitter
Universal Input to DC Isolated Signal Conditioner
Field Programmable
APD 8000 from $459
*Free I/O Range Setup*
Include your I/O ranges on your order,
and we'll set it up for you!
Open Datasheet
Download Datasheet
Open Feature Summary
Download Feature Summary
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
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
APD 8000
DC to DC Isolated Signal Conditioner
Field Configurable
K109UI $169 *stock item*
Open Datasheet
Download Datasheet
Open Installation Manual
Download Installation Manual
Click to see ALL Seneca products
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
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
K109UI
DC to DC Isolated Transmitter
with Sink/Source Input
Field Configurable
K109S $169 *stock item*
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
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
K109S
Universal Input to 4-20 mA Loop Powered Transmitter
Field Programmable
K121 $149 *stock item*
Open Datasheet
Download Datasheet
Open Installation Manual
Download Installation Manual
Click to see ALL Seneca products
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
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
K121
DuoPak ® 2 Channel Isolated Signal Conditioners
Factory Configured
APD 2000 Series from $569
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
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
APD 2000 Series DC
Head-Mount Universal Transmitter, Isolated
Field Programmable
Fits DIN Form B Heads
T121 $159 *stock item*
Open Datasheet
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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
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
USB - UART TTL Converter
EASY-USB $109 *stock item*
Open Datasheet
Download Datasheet
Open Installation Manual
Download Installation Manual
EASY-USB Software Link
Programming kitK121
K121
K121
Includes
Converter
Software mini CD (or download latest)
Adapter cable (std USB cable not included)
Converter
Software mini CD (or download latest)
Adapter cable (std USB cable not included)
EASY-USB
4 Digit 4-20 mA Loop Powered Display
Field Rangeable
S315 $139
*stock item*
S315-IP66 $300
Open Datasheet
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
Input: 4-20 mA
Display: 4 digit red LED
- 1/8 DIN panel mount or IP66 housing
- Scaleable 4 digit display
S315
