Seneca Signal Conditioners, Converters, Isolators, Transmitters

  • 1 Year Warranty
  • Hot-Swappable Design
  • Economical
  • Full I/O/Power Isolated Versions Available




Click on PDF links below
for product information

Literature and Links


Seneca product brochure

Seneca current sensors

Seneca accessories and software

Seneca declaration of origin
Seneca declaration of conformity



Seneca

Click to see ALL Seneca products


Call API today for information and pricing!

How to Order

  1. Select a model
  2. See data sheet for ordering info and power options
  3. Request a price via phone, chat, or email
  4. Stock to 3 week typical lead time (USA customers)
  5. To place your order
Model Input/Output Features Product

DC to DC Isolated Signal Conditioner


Field Configurable


K109UI

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

  • 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

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

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

  • 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

Thermocouple to DC Isolated Transmitter


Field Configurable


K109TC

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

Click to see ALL Seneca products

Field Configurable Input
Input: Thermocouple: J, K, T, E, R, S, N, B

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 
K109TC
K109TC

100 Ω RTD to DC Isolated Transmitter


Field Configurable


K109PT

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

Click to see ALL Seneca products

Field Configurable Input
Input: One 100 Ω RTD, 385 Curve RTD, 2, 3, or 4 wire
–150 to 650°C, (–238 to 1202°F), 50°C min. span

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 
K107A
K109PT

RS-485 to RS-485 or
RS-232 to RS-485
Repeaters/Isolators/Amplifiers


K107A, K107B

Open Datasheet
Download Datasheet

Open Installation Manual
Open Installation Manual

Click to see ALL Seneca products

K107A RS-485 to RS-485
Data X: One RS-485 half duplex
Data Y: One RS-485 half duplex

K107B RS-232 to RS-485
Data X: One RS-232 half duplex
Data Y: One RS-485 half duplex

  • 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 
K107A K107B
K107A            K107B

K-SUPPLY and KBUS Power Supply
for K-Series Modules


K-SUPPLY, KBUS

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

Click to see ALL Seneca products

Regulated Power Distribution
Input: 19.2 to 30 VDC
Output: 19.2 to 30 VDC

  • Only 6.2 mm wide
  • Power supply distribution
  • Regulated and isolated
  • Low cost
  • DIN rail mount without tools
  • Power: any 19.2-30 VDC supply

CE logo
K107A
K-SUPPLY                 K-BUS

Strain Gauge/Load Cell/ Bridge Input / RS485 Modbus and Analog Output


Seneca Z-SG

Open Z-SG datasheet
Download Z-SG datasheet

Open Z-SG installation
Download Z-SG installation

Open Z-SG user manual
Download Z-SG usr manual

Open Z-SG calibration procedure
Download Z-SG calibration procedure

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

Load Cell, Strain Gauge, Bridge Junction Box


Seneca SG-EQ4

Open SG-EQ4 instructions
Download SG-EQ4 instructions

Open SG-EQ4 installation
Download SG-EQ4 installation
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

Z-Series Backplane Connector


Seneca Z-PC-DINAL1-35

Open Z-PC-DINAL datasheet
Download Z-PC-DINAL datasheet

Open Z-PC-DIN overview
Download Z-PC-DIN overview
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

Z-Series Backplane Connector


Seneca Z-PC-DINAL2-17.5

Open Z-PC-Z-PC-DINAL datasheet
Download Z-PC-DINAL datasheet

Open Z-PC-DIN overview
Download Z-PC-DIN overview
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

4 Digit 4-20 mA Loop Powered Display


Field Rangeable


S315
S315-IP66

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

24 VDC Loop Power Supply


Seneca Z-SUPPLY

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

Click to see ALL Seneca products


Download CAD Drawing
Input Power
110 VAC to 230 VAC, 47-63 Hz, 0.7 A, or
110 VDC to 315 VDC, 0.7 A

Output
24 VDC ±2%, 1.5 A max.

  • 1 year warranty
  • 1.5 kV isolation
  • LEDs for input power and status
  • "Power good" status relay
  • Short-circuit and over-load protection
CE

Seneca Z-SUPPLY
Z-SUPPLY

Z110 Loop Powered Isolators
1 Channel or 2 Channel


Seneca Z110S and Z110D

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

Click to see ALL Seneca products


Download CAD Drawing
Input
Z110S: One 4-20 mA loop
Z110D: Two 4-20 mA loops

Output
Z110S: One isolated 4-20 mA loop
Z110D: Two isolated 4-20 mA loops
  • Replaces API LPI-1
  • Replaces API LPI-2
  • Replaces API DPI-2
  • Powered by the input loop
  • 1 year warranty
  • DIN rail mount
  • 17.5 mm wide

CE
Z110S Z110S Z110D
Z110D

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


Seneca S117P-1

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
T120
T121
Z-SG
Includes
Converter box
Software mini CD (or download latest)
Adapter cable
s117p1
S117P1

4 Digit 4-20 mA Loop Powered Display


Field Rangeable


S315
S315-IP66

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

USB - UART TTL Converter


EASY-USB

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

EASY-USB Software Link

Programming kitK121
K121

Includes
Converter
Software mini CD (or download latest)
Adapter cable (std USB cable not included)
EASY-USB
EASY-USB

Head-Mount RTD Transmitter, Non-Isolated


Field Programmable


Fits DIN Form B Heads

T120

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

Click to see ALL Seneca products

Programmable
Input: Pt100 or Ni100 RTD
2, 3, or 4 wire

Selectable Output
Output: 4-20 mA, 20-4 mA

  • Order T120-C and specify I/O for pre-programmed model
  • 44 mm dia
  • EASY-USB configuration
  • Low cost
  • DIN B mount with 5.8 mm (0.228" dia) center hole
  • Power: 19.2 to 30 VDC current loop

T121  CE logo  new

T120

Head-Mount Universal Transmitter, Isolated


Field Programmable


Fits DIN Form B Heads

T121

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

Click to see ALL Seneca products

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

AC Current Transmitter


Field Selectabe Ranges

T201

Open Current Sensor Overview
Download Current Sensor Overview

Open Installation Manual
Download Installation Manual


Input

T201: 5, 10, 15, 20, 25, 30, 35, 40 Amps AC

Output
4-20 mA
  • Measures AC Current
  • 5-28 VDC loop power
  • DIP-switch selectable ranges
  • Solid core design

CE
UL
T201
T201

DC Current Transmitters


Field Selectabe Ranges

T201DC
T201DC100

Open Current Sensor Overview
Download Current Sensor Overview

Open T201DC Installation Manual
Download T201DC Installation Manual

Open T201DC100 Installation Manual
Download T201DC100 Installation Manual


Input

T201DC: 5, 10, 20, 40, ±5, ±10, –5-20, –10-40 ADC
T201DC100: 10, 25, 50, 100, ±5, ±10, –5-20, –10-40 ADC

Output
4-20 mA
  • Measures DC Current
  • 9-28 VDC loop power
  • DIP-switch selectable ranges
  • Solid core design

CE
UL
T201DCH 50
T201DC 40 Amp DC
T201DC100
T201DC 100 Amp DC

AC/DC Hall Effect Current Transmitters


Field Selectable Ranges

T201DCH Series
T201DCH-LP Loop Powered Series

Open Current Sensor Overview
Download Current Sensor Overview

Open T201DCH Installation Manual
Download T201DCH Installation Manual

Open T201DCH100 Installation Manual
Download T201DCH100 Installation Manual

Open T201DCH300 Installation Manual
Download T201DCH300 Installation Manual

Open T201DCH50-LP Installation Manual
Download T201DCH50-LP Installation Manual

Open T201DCH100-LP Installation Manual
Download T201DCH100-LP Installation Manual

Open T201DCH300-LP Installation Manual
Download T201DCH300-LP Installation Manual


Input

T201DCH: 25, 50 ADC/AAC
T201DCH100: 50, 100 ADC/AAC, ±50, ±100 ADC
T201DCH300: 150, 300 ADC/AAC, ±150, ±300 ADC
T201DCH50-LP: 50 ADC/AAC, ±50 ADC
T201DCH100-LP: 50, 100 ADC/AAC, ±50, ±100 ADC
T201DCH300-LP: 150, 300 ADC/AAC, ±150, ±300 ADC

Output
0-10 VDC
LP verions: 4-20 mA
  • Hall Effect measures AC or DC
  • 10-28 VDC, LP versions: 9-28 VDC loop power
  • DIP-switch selectable ranges
  • Solid core design
CE
UL
T201DCH 50
T201DCH 50 Amp
T201DCH100
T201DCH 100, 300 Amp