Seneca Signal Conditioners, Converters, Isolators, Transmitters

  • 1 Year Warranty
  • Hot-Swappable Design
  • Economical
  • Full I/O/Power Isolated Versions
*stock item*
Normally stocked, but quantities available
may vary on a daily basis
Please call to confirm quantities and lead time

Click on PDF links below
for product information
Links
Seneca product brochure
Seneca current sensors
Seneca accessories and software
Seneca declaration of origin Seneca declaration of conformity

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How to select your product
  • Open pdf datasheet for your model
  • Select model, range, units, options, accessories
  • Contact us if you need assistance
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Other ways to order
Model Input/Output Features Product

Universal Input to DC Isolator/Converter
V, mA, Ohms, TC, RTD


Z109REG2-1  $289

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Open Installation Manual
Download Installation Manual

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Download .dwg CAD Drawing
Download .stp 3-D Drawing

Configurable Input
mV, V, (Bipolar from 75 mV to 20 V)
mA (Bipolar up to 20 mA)
RTD: Pt100, Pt500, Pt1000, Ni100, KTY81, KTY84, NTC; 3-4 wire
Thermocouple: Type J, K, R, S, T, E, B, N,
Potentiometer: 500 Ω to 100 kΩ
Rheostat: 500 Ω to 25 kΩ
Strobe: Alternative to output relay

Output
One isolated mA or Voltage
Sink or source mA
Configurable range
1 relay output

CE UL

Z109REG2-1
Z109REG2-1

DC to DC Isolated Signal Conditioner


Field Configurable


K109UI  $250 *stock item*

Open Datasheet
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  $250 *stock item*

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    $165 *stock item*
K121-C  $190 ranged to order

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

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Field Programmable Input
Requires EASY-USB for configuration
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
  • DIN rail mount without tools
  • Powered by 4-20 mA loop

  • CE logo  EX
K121
K121

Thermocouple to DC Isolated Transmitter


Field Configurable


K109TC  $250 *stock item*

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Download Datasheet

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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  $250 *stock item*

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  $175
K107B  $175 *stock item*

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  $99 *stock item*
KBUS  $17 *stock item*

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

RTD to DC Isolator/Converter
2/3/4 wire RTD to mA/V output


Z109PT2-1  $259

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Open Installation Manual
Download Installation Manual

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Download .dwg CAD Drawing
Download .stp 3-D Drawing

Input
One RTD
Selectable for Pt100, Pt500, Pt1000, Ni100
2/3/4 wire
Configurable range

Output
One isolated mA or Voltage
Sink or source mA
Configurable range

CE UL

Z109PT2-1
Z109PT2-1

AC to DC Isolated Current Measurement


Field Configurable

Z201-H  $199
Module power: 85-265 VAC/VDC

Z201  $179
Module power: 19-40 VDC, 19-28 VAC

Open Datasheet
Download Datasheet

Open Z201-H manual
Download Z201-H manual

Open Z201 manual
Download Z201 manual
Field selectable input ranges
0-5 Amps AC
0-10 Amps AC
Selectable via wiring terminal

Field selectable output ranges
0-1 V, 0-5 V, 0-10 V, 2-10 V
0-20 mA, 4-20 mA sink or source
  • Full I/O/power isolation
  • Selectable sink/source mA output
  • Mount to 35 mm DIN rail
  • Z201-H power: 85-265 VAC/VDC
  • Z201 power: 19-40 VDC, 19-28 VAC

CE

Z201-HZ201
Seneca Z201-H and Z201

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


Z-SG  $260 *stock item*

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-series 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

Strain Gauge/Load Cell/Bridge Input
Modbus RTU and Analog Output
Advanced Features


Z-SG3  $300

Open Seneca Stain Gauge Module Brochure
Download Open Seneca Stain Gauge Module Brochure

Open Z-SG3 installation manual
Download Z-Z-SG3 installation manual

Open Z-SG3 user manual
Download Z-SG3 user manual

Field Configurable Input
Input: One input channel connection for up to 4 (350 Ω) or
8 (1000 Ω) strain gauge load cells, 87 Ω minimum impedance
4 or 6 wire
Use SG-EQ4 for easy wiring of mutiple load cells
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
Configure with EASY SETUP software and standard micro-USB cable
0.01% FS accuracy class
24 bit analog-digital conversion
Upgradeable firmware
Settable sampling rate
Alarm with programmable hysteresis
Configurable resolution
Settable floating-point value
Stabilized measurement with noise filter

Download EASY SETUP software
Download Z-series LabView drivers
Download Z-SG3 3D STP CAD file

  • Only 17.5 mm wide
  • EASY SETUP software and DIP switch configuration
  • Calibration via software or push button
  • 5-way isolation
  • DIN rail mount without tools
  • Power: 10-40 VDC, 19-28 VAC

  CE logo 
Z-SG3
Z-SG3

Load Cell, Strain Gauge, Bridge
Sum Board / Sum Box


SG-EQ4  $85
Board only

SG-EQ4-BOXPG7  $340
Board in box

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
sg-eq4
SG-EQ4-BOXPG7

Z-Series Backplane Connector


Z-PC-DINAL1-35  $40

Open Z-PC-DIN datasheet
Download Z-PC-DIN datasheet

Open Z-PC-DIN overview
Download Z-PC-DIN overview
Head terminal + 1 slot
For one 17.5mm or one 35mm wide Z-PC module
Connect power
Connect Modbus
Required for Modbus connection

DIN rail mount with screw terminals, 1 slot
Connect one 17.5 or 35mm Z-PC series module
Z-PC-DINAL1-35
Z-PC-DINAL1-35

Z-Series Backplane Connector


Z-PC-DINAL2-17.5  $45 *stock item*

Open Z-PC-Z-PC-DIN datasheet
Download Z-PC-DIN datasheet

Open Z-PC-DIN overview
Download Z-PC-DIN overview
Head terminal + 2 slots
For one or two 17.5mm wide Z-PC modules
Connect power
Connect Modbus
Required for Modbus connection

DIN rail mount with screw terminals, 2 slots
Connect one or two 17.5mm Z-PC series modules
Z-PC-DINAL2-17.5
Z-PC-DINAL2-17.5

Z-Series Backplane Extender


Z-PC-DIN2-17.5  $45 *stock item*

Open Z-PC-DIN datasheet
Download Z-PC-DIN datasheet

Open Z-PC-DIN overview
Download Z-PC-DIN overview
2 slot extension terminal
For one or two 17.5mm wide Z-PC modules
Connect power
Connect Modbus
Required for Modbus connection
DIN rail mount with 2 slots
Add one or two 17.5mm Z-PC series modules
Z-PC-DIN2-17.5.jpg
Z-PC-DIN2-17.5

24 VDC Loop Power Supply


Z-SUPPLY  $199 *stock item*

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  $145 *stock item*
Z110D  $200 *stock item*

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 Z110D
Z110S         Z110D

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


Seneca S117P-1  $299 *stock item*

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  $150 *stock item*
S315-IP66  $310

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
S315
S315







USB - UART TTL Converter


EASY-USB  $140 *stock item*

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

EASY-USB Software Link

Programming Kit for K121, T120, T121

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 *stock item*

T120-C  $109 pre-programmed to order

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

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Programmable
Requires EASY-USB for configuration

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
  • DIN B mount with 5.8 mm (0.228" dia) center hole
  • Power: 19.2 to 30 VDC current loop

T121  CE logo

T120

Head-Mount Universal Transmitter, Isolated


Field Programmable


Fits DIN Form B Heads

T121  $159 *stock item*

T121-C  $179 pre-programmed to order

Open Datasheet
Download Datasheet

Open Installation Manual
Download Installation Manual

Click to see ALL Seneca products

Programmable
Requires EASY-USB for configuration

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
  • I/O isolation
  • DIN B with 5.8mm (0.228"dia) center hole
  • Power: 7 to 30 VDC current loop

T121   CE logo

T121

AC Current Transmitter Loop Powered


Field Selectabe Ranges

Open Current Sensor Overview
Download Current Sensor Overview

T201  to 40A  $109 *stock item*
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  $169 *stock item*
Open T201DC Installation Manual
Download T201DC Installation Manual

T201DC100  to 100A  $229
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  $119 *stock item*
Open T201DCH Installation Manual
Download T201DCH Installation Manual

T201DCH100  100A  $159
Open T201DCH100 Installation Manual
Download T201DCH100 Installation Manual

T201DCH300  300A  $169 *stock item*
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  $119
Open T201DCH50-LP Installation Manual
Download T201DCH50-LP Installation Manual

T201DCH100-LP  100A  $159
Open T201DCH100-LP Installation Manual
Download T201DCH100-LP Installation Manual

T201DCH300-LP  300A  $169
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

DIN Rail Adapter for T201 Current Sensors


A-DIN-T201  $19 *stock item*

No datasheet
Plastic DIN Rail adapter
Fits Seneca T201 current sensors
Mount current sensor on a standard 35 mm DIN rail
seneca-a-din-t201.jpg

seneca-a-din-t201-clip.jpg
A-DIN-T201