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

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 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

Alarm Trip for 1 to 4 Sensors:

  • Load Cell
  • Pressure Transducer or Sensor
  • Strain Gauge
  • Bridge
  • Force Transducer or Sensor
Factory Configured
APD 1500  from $289
APD 1520  from $309

Open Datasheet
Download Datasheet
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
Accepts one sensor for input
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 1500 UL approved
APD 1500, APD 1520

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 $319

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
  • 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

Isolated DC Amplifier for One Sensor:

  • Load Cell
  • Pressure Transducer or Sensor
  • Strain Gauge
  • Bridge
  • Force Transducer or Sensor
Factory Configured
APD 4051  from $319

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 4051 UL approved
APD 4051

Non-Isolated DC Amplifier for 1 to 4 Sensors:

  • Load Cells
  • Pressure Transducers and Sensors
  • Strain Gauges
  • Bridges
  • Force Transducers and Sensors

Field Selectable Minuteman Setup


API 4058 G  from $329

Open Datasheet
Download Datasheet
Email Datasheet Link
Field configurable Input
0-5 mVDC to 0-1200 mVDC
Accepts one to four sensors for input
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 one bridge
  • Output test button
  • Uses API-011 11-pin socket
  • 115 VAC powered
  • A230 option for 230 VAC
  • D option for 9-30 VDC power


Api 4058G
API 4058 G

Non-Isolated DC Amplifier for 1 to 4 Sensors:

  • Load Cells
  • Pressure Transducers and Sensors
  • Strain Gauges
  • Bridges
  • Force Transducers and Sensors

Field Selectable Minuteman Setup


APD 4058  from $339

Open Datasheet
Download Datasheet
Email Datasheet Link
Field configurable
0-5 mVDC to 0-1200 mVDC
Accepts one to four sensors for input
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
  • Non-isolated
  • 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 4058 UL approved
APD 4058

Isolated DC Amplifier for 1 to 4 Sensors:

  • Load Cells
  • Pressure Transducers and Sensors
  • Strain Gauges
  • Bridges
  • Force Transducers and Sensors

Field Selectable Minuteman Setup


API 4059 G  from $355

Open Datasheet
Download Datasheet
Email Datasheet Link
Field configurable
0-5 mVDC to 0-400 mVDC, 120 mA
Accepts one to four sensors for input
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
  • D option for 9-30 VDC power

Api 4059G
API 4059 G
Socket sold separately

Isolated DC Amplifier for 1 to 4 Sensors:

  • Load Cells
  • Pressure Transducers and Sensors
  • Strain Gauges
  • Bridges
  • Force Transducers and Sensors

Field Selectable Minuteman Setup


APD 4059  from $375

Open Datasheet
Download Datasheet
Email Datasheet Link
Field configurable
0-5 mVDC to 0-400 mVDC
Field settable excitation voltage
0-10 VDC in 1 VDC steps, 120 mA
Accepts one to four sensors for input
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 4059 UL approved
APD 4059

Isolated DC Amplifier for 1 to 4 Sensors with
Calibration Resistor Option for:

  • Load Cells
  • Pressure Transducers and Sensors
  • Strain Gauges
  • Bridges
  • Force Transducers and Sensors

Field Selectable Minuteman Setup


APD 4059CR  from $415

Open Datasheet
Download Datasheet
Email Datasheet Link
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
Accepts one to four sensors for input
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 4059 UL approved
APD 4059CR

IsoSplitter ® Strain Gauge Amplifier/Signal Splitter
1 Strain Gauge Input to 2 Isolated DC Outputs


Factory Configured
APD 5393  from $499

Open Datasheet
Download Datasheet
Specify input range
Factory configured for one 350 Ω (or greater)
strain gauge, pressure transducer, pressure sensor, 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 IsoSplitter UL approved
APD 5393 Strain Gauge IsoSplitter

DuoPak ® 2 Channel Isolated Signal Conditioners


Choose Your Factory Configuration
APD 2000 Series  from $519

Specify input range for each channel
Accepts one sensor for each input channel
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

DuoPak UL approved
APD 2000 Series Strain Gauge
Field Configurable Input
Input: One input channel connection for up to 4 (350 Ω) or 8 (1000 Ω) strain gauge load cells
4 or 6 wire
Excitation supply
Sensitivity: 1 to 64 mV/V
Switch I/O for either tare or alarm
Field Configurable Output
Output: 4-20 mA, 0-20 mA
0-5 V, 0-10 V
Modbus RTU with backplane connector system
Open Z-SG application note
Download Z-SG application note
Download Z-SG DWG CAD file
Download Z-SG 3D STP CAD file
Download Z-SG LabView drivers
  • Only 17.5 mm wide
  • DIP switch configuration
  • Calibration via S117P1 or push button
  • 3-way isolation
  • Low cost
  • DIN rail mount without tools
  • Power: 10-40 VDC, 19-28 VAC

CE logo
Z-SG
Z-SG

RS232/USB, TTL/USB, RS485/USB Isolated Serial Converter


Seneca S117P-1  $260 *1 in stock*

Open S117P-1 datasheet
Download S117P-1 datasheet
Open S117P-1 installation
Download S117P-1 installation
S117P-1 Software

Download S117P-1 Software
Programming kit for
T120
T121
Z-SG
Includes
Converter box
Software mini CD (or download latest)
Adapter cable
s117p1
S117P1
Input
Up to 4 strain gauges
Output
Summed signal from up to 4 strain gauges
  • Connect up to 4 strain gauges
  • For 4-wire / 6-wire load cells
  • Internal jumpers for configuration
  • Trim pots for equalized 4 wire signal
sg-eq4
SG-EQ4
Head terminal + 1 slot 35mm DIN rail bus system
For Z-PC Line
Required for Modbus connection
DIN rail mount with screw terminals, 1 slot
Connect one Z-PC series module
Connect power
Connect Modbus
Z-PC-DINAL1-35
Z-PC-DINAL1-35
Head terminal + 2 slot 35mm DIN rail bus system
For Z-PC Line
Required for Modbus connection
DIN rail mount with screw terminals, 2 slots
Connect one or two Z-PC series modules
Connect power
Connect Modbus
Z-PC-DINAL2-17.5
Z-PC-DINAL2-17.5
2 slot 35mm DIN rail bus connector
For Z-PC line
DIN rail mount with 2 slots
Connect one or two Z-PC series modules
Z-PC-DIN2-17.5.jpg
Z-PC-DIN2-17.5

4 Digit 4-20 mA Loop Powered Display


Field Rangeable


S315  $139 *in stock*
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
  • 1/8 DIN panel mount or IP66 housing
  • Scaleable 4 digit display

CE logo new!
S315
S315
Full Website