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

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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  $169 *in stock*

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Download Datasheet

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

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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 *1 in stock*

Open Datasheet
Download Datasheet

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

Thermocouple to DC Isolated Transmitter


Field Configurable


K109TC  $169 *in stock*

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

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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  $169 *in stock*

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

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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  $159
K107B  $159 *in stock*

Open Datasheet
Download Datasheet

Open Installation Manual
Open Installation Manual

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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  $89 *in stock*
KBUS  $15 *in stock*

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

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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


Z-SG  $250 *in stock*

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 / Sum Box


SG-EQ4  $85

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


Z-PC-DINAL1-35  $40

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


Z-PC-DINAL2-17.5  $47.50 *in stock*

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

Z-Series Backplane Connector


Z-PC-DIN2-17.5  $30 *in stock*

Open Z-PC-DIN2 datasheet
Download Z-PC-DIN2 datasheet

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

24 VDC Loop Power Supply


Z-SUPPLY  $199 *in stock*

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

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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


Z110S  $139 *in stock*
Z110D  $190

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

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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  $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

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

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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  $109

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  $89 *in stock*

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

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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  $159 *in stock*

Open Datasheet
Download Datasheet

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

AC Current Transmitter Loop Powered


Field Selectabe Ranges

Open Current Sensor Overview
Download Current Sensor Overview

T201  to 40A  $99 *in stock*
Open Installation Manual
Download Installation Manual


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

Output
4-20 mA

Power
5-28 VDC current loop

  • Measures AC Current
  • DIP-switch selectable ranges
  • Solid core design

CE
UL
T201
T201

DC Current Transmitters Loop Powered


Field Selectabe Ranges

Open Current Sensor Overview
Download Current Sensor Overview

T201DC  to 40A  $159 *in stock*
Open T201DC Installation Manual
Download T201DC Installation Manual

T201DC100  to 100A  $209
Open T201DC100 Installation Manual
Download T201DC100 Installation Manual

Input T201DC
5, 10, 20, 40,
±5, ±10, –5-20,
–10-40 ADC

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

Output
4-20 mA

Power
5-28 VDC current loop

  • Measures DC Current
  • 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 0-10V Output


Field Selectable Ranges

Open Current Sensor Overview
Download Current Sensor Overview

T201DCH  50A  $109 *more coming*
Open T201DCH Installation Manual
Download T201DCH Installation Manual

T201DCH100  100A  $149
Open T201DCH100 Installation Manual
Download T201DCH100 Installation Manual

T201DCH300  300A  $159 *in stock*
Open T201DCH300 Installation Manual
Download T201DCH300 Installation Manual


Input T201DCH
25, 50 ADC/AAC

Input T201DCH100
50, 100 ADC/AAC, ±50, ±100 ADC

Input T201DCH300
150, 300 ADC/AAC, ±150, ±300 ADC

Output
0-10 VDC

Powered by
10-28 VDC

  • Hall Effect measures AC or DC
  • DIP-switch selectable ranges
  • Solid core design
CE
UL
T201DCH 50
T201DCH 50 Amp
T201DCH100
T201DCH 100, 300 Amp

AC/DC Hall Effect Current Transmitters Loop Powered


Field Selectable Ranges

Open Current Sensor Overview
Download Current Sensor Overview

T201DCH50-LP  50A  $109
Open T201DCH50-LP Installation Manual
Download T201DCH50-LP Installation Manual

T201DCH100-LP  100A  $149
Open T201DCH100-LP Installation Manual
Download T201DCH100-LP Installation Manual

T201DCH300-LP  300A  $159
Open T201DCH300-LP Installation Manual
Download T201DCH300-LP Installation Manual


Input T201DCH50-LP
50 ADC/AAC, ±50 ADC

Input T201DCH100-LP
50, 100 ADC/AAC, ±50, ±100 ADC

Input T201DCH300-LP
150, 300 ADC/AAC, ±150, ±300 ADC

Output
4-20 mA

Power
9-28 VDC current loop

  • Hall Effect measures AC or DC
  • DIP-switch selectable ranges
  • Solid core design
CE
UL
T201DCH50-LP
T201DCH 50 Amp
T201DCH100-LP
T201DCH 100, 300 Amp