Temperature Alarms and Transmitters
- 6 Year Warranty on API Modules
- LoopTracker ® LEDs
- Hot-Swappable Plug-In Design
- Push to Test Output
- Full I/O/Power Isolation
Click on PDF links below
for product information
Links
Product brochure
Options & accessories
Regulatory compliance
Reference Info
Thermocouple types
What is a Ground loop?
RFI/EMI
LoopTracker and Output Test
Sink or source
Applications
Monitor stack flare
Oven overtemp shutdown
Monitor chillers and freezers
Product brochure
Options & accessories
Regulatory compliance
Reference Info
Thermocouple types
What is a Ground loop?
RFI/EMI
LoopTracker and Output Test
Sink or source
Applications
Monitor stack flare
Oven overtemp shutdown
Monitor chillers and freezers
How to select your product
- Open pdf datasheet for your model
- Select model, range, units, options, accessories
- Contact us if you need assistance
Ready to order?
Other ways to order
Other ways to order
- Click here to set up an account
-
Click here to find your authorized dealer or
if you are outside the USA - Call us to find your local authorized distributor
Model
Input/Output
Features
Product
Thermocouple to DC Isolated Signal Conditioner
Factory Configured
APD 4131 from $469
Open Datasheet
Download Datasheet
Specify T/C type and
°F or °C temperature range
Factory configured
Thermocouples J, K, T, E, R, S, N, B, C, D, G, M, P
±0.25°C Accuracy
Microprocessor-based linearization
Specify output range
Factory configured analog output
0-1 V to 0-10 V
±1 V to ±10 V
0-1 mA to 0-20 mA, 4-20 mA
°F or °C temperature range
Factory configured
Thermocouples J, K, T, E, R, S, N, B, C, D, G, M, P
±0.25°C Accuracy
Microprocessor-based linearization
Specify output range
Factory configured analog output
0-1 V to 0-10 V
±1 V to ±10 V
0-1 mA to 0-20 mA, 4-20 mA
- Automatic cold junction compensation
- Removable plugs
- Input LoopTracker LED
- Output test button
- Full I/O/power isolation
- Selectable sink/source output
- 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 4131
Thermocouple to DC Isolated Signal Conditioner
Factory Configured
API 4130 GL from $439
Open Datasheet
Download Datasheet
Open Feature Summary
Download Feature Summary
API 4130 GL sold before 07-12-16
Open Datasheet
Download Datasheet
Specify T/C type and
°F or °C temperature range
Factory configured
Thermocouples J, K, T, E, R, S, N, B, C, D, G, M, P
±0.25°C Accuracy
New microprocessor-based linearization
Specify output range
Factory configured analog output
0-1 V to 0-10 V
±1 V to ±10 V
0-1 mA to 0-20 mA, 4-20 mA
°F or °C temperature range
Factory configured
Thermocouples J, K, T, E, R, S, N, B, C, D, G, M, P
±0.25°C Accuracy
New microprocessor-based linearization
Specify output range
Factory configured analog output
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
- Isolated & linearized
- Automatic cold junction compensation
- Full I/O/power isolation
- Replaces Action AP 4130
- I/O LoopTracker LEDs
- Output test button
- 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 4130 GL
Universal Input to DC Isolated Signal Conditioner
Field Programmable
APD 8000 from $529
*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 sink/source output
- 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
Universal Input to DC Isolator/Converter
V, mA, Ohms, TC, RTD
Z109REG2-1 $289
Open Brochure
Download Brochure
Open Installation Manual
Download Installation Manual
Click to see ALL Seneca products
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
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
- Configurable via DIP switches, USB, or Android app
- 3-way isolation
- 9-40 VDC/19-28 VAC power
- Free setup software
- Free Android App
- 1 year warranty
- DIN rail mount
- 17.5 mm wide
Z109REG2-1
Thermocouple to Dual Thermocouple Splitter/Converter
Factory Configured
APD 41390 from $599
Open Datasheet
Download Datasheet
Specify T/C input type and range
T/C: J, K, T, E, R, S, N, B, C, D, G, M, P
Temperature range may be limited by the smallest
ANSI range of the 3 T/C types you select
Upscale burnout (std), downscale burnout or
last known value
Specify output types and ranges
Channel 1
Thermocouple output type
Channel 2
Thermocouple output type
Alarm options
Hi, Lo, latching, failsafe, reverse
T/C: J, K, T, E, R, S, N, B, C, D, G, M, P
Temperature range may be limited by the smallest
ANSI range of the 3 T/C types you select
Upscale burnout (std), downscale burnout or
last known value
Specify output types and ranges
Channel 1
Thermocouple output type
Channel 2
Thermocouple output type
Alarm options
Hi, Lo, latching, failsafe, reverse
- Split a thermocouple into 2 thermocouple outputs
- T/Cs can be the same, 2 different or 3 different types
-
Retransmit or convert a thermocouple into
2 different thermocouples - Front zero and span pots
- Input level LED
- Full I/O/power isolation
- Universal power 85-265 VAC, 60-300 VDC
- D option for 9-30 VDC, 10-32 VAC power
- Interfacing legacy equipment with a PLC
- Correcting thermocouple incompatibility issues
-
Separate monitoring and recording functions with
one thermocouple
APD 41390
Thermocouple to DC and Thermocouple Splitter/Converter
Factory Configured
APD 41391 from $599
Open Datasheet
Download Datasheet
Specify T/C input type and range
T/C: J, K, T, E, R, S, N, B, C, D, G, M, P
Temperature range may be limited by the smallest
ANSI range of the 2 T/C types you select
Upscale burnout (std), downscale burnout or
last known value
Specify output types and ranges
Channel 1
Process DC output: V or mA
Sink/source mA output
Channel 2
Thermocouple output type
Alarm options
Hi, Lo, latching, failsafe, reverse
T/C: J, K, T, E, R, S, N, B, C, D, G, M, P
Temperature range may be limited by the smallest
ANSI range of the 2 T/C types you select
Upscale burnout (std), downscale burnout or
last known value
Specify output types and ranges
Channel 1
Process DC output: V or mA
Sink/source mA output
Channel 2
Thermocouple output type
Alarm options
Hi, Lo, latching, failsafe, reverse
- Split a thermocouple into 2 different outputs
- Channel 1: DC process output
- Channel 2: retransmit or convert a thermocouple
- Front zero and span pots
- Input level LED
- Full I/O/power isolation
- Universal power 85-265 VAC, 60-300 VDC
- D option for 9-30 VDC, 10-32 VAC power
- Interfacing legacy equipment with a PLC
- Correcting thermocouple incompatibility issues
-
Monitoring and recording functions with
one thermocouple
APD 41391
Thermocouple to Dual DC Splitter/Transmitter
Factory Configured
APD 41393 from $599
Open Datasheet
Download Datasheet
Specify T/C input type and range
T/C: J, K, T, E, R, S, N, B, C, D, G, M, P
Specify DC output types and ranges
Channel 1
Process DC output: V or mA
Sink/source mA output
Channel 2
Process DC output: V or mA
Sink/source mA output
Alarm options
Hi, Lo, latching, failsafe, reverse
T/C: J, K, T, E, R, S, N, B, C, D, G, M, P
Specify DC output types and ranges
Channel 1
Process DC output: V or mA
Sink/source mA output
Channel 2
Process DC output: V or mA
Sink/source mA output
Alarm options
Hi, Lo, latching, failsafe, reverse
- Split a thermocouple into 2 independent DC outputs
- Front zero and span pots
- Input level LED
- Full I/O/power isolation
- Universal power 85-265 VAC, 60-300 VDC
- D option for 9-30 VDC, 10-32 VAC power
- Interfacing legacy equipment with a PLC
- Correcting thermocouple incompatibility issues
-
Monitoring and recording functions with
one thermocouple
APD 41393
Thermocouple Input Alarm Trips
Factory Configured
API 1200 G from $319
API 1220 G from $339
Open Datasheet
Download Datasheet
Specify T/C type and
°F or °C temperature range
Factory configured
Thermocouple J, K, T, E, R, S, N, B, C, D, G, M, P
100°F (55°C) recommended minimum span
API 1200 G Single Alarm Trip
One DPDT contact set
Standard: HI alarm, normal acting,
set/reset adjustments, non-latching
See data sheet for alarm options
API 1220 G Dual Alarm Trip
Two SPDT contact sets
Standard: HI/LO alarms, normal acting,
two set/reset adjustments, non-latching
See data sheet for alarm options
°F or °C temperature range
Factory configured
Thermocouple J, K, T, E, R, S, N, B, C, D, G, M, P
100°F (55°C) recommended minimum span
API 1200 G Single Alarm Trip
One DPDT contact set
Standard: HI alarm, normal acting,
set/reset adjustments, non-latching
See data sheet for alarm options
API 1220 G Dual Alarm Trip
Two SPDT contact sets
Standard: HI/LO alarms, normal acting,
two set/reset adjustments, non-latching
See data sheet for alarm options
-
New version
- Complete thermocouple selection
- Microprocessor controlled input linearization
- More burnout options
- Improved setpoint/reset point control
- User adjustable set and reset point(s)
- 8 Amp contacts
- Hot-swappable plug-in design
- Replaces Action AP 1200 and AP 1220
- Input LoopTracker LED and output test button
- Alarm status LEDs
- Alarm options: LO, HI/HI, LO/LO
- Optional reverse acting, optional latching
- Uses API-011 11-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 1200 G, API 1220 G
Thermocouple Input Alarm Trips
Factory Configured
APD 1200 from $379
APD 1220 from $399
Open Datasheet
Download Datasheet
Specify T/C type and
°F or °C temperature range
Factory configured
Thermocouple J, K, T, E, R, S, N, B, C, D, G, M, P
100°F (55°C) recommended minimum span
APD 1200 Single Alarm Trip
Dual DPST contact set
Standard: HI alarm, normal acting,
set/reset adjustments, non-latching
APD 1220 Dual Alarm Trip
Two DPST contact sets
Standard: HI/LO alarms, normal acting,
two set/reset adjustments, non-latching
°F or °C temperature range
Factory configured
Thermocouple J, K, T, E, R, S, N, B, C, D, G, M, P
100°F (55°C) recommended minimum span
APD 1200 Single Alarm Trip
Dual DPST contact set
Standard: HI alarm, normal acting,
set/reset adjustments, non-latching
APD 1220 Dual Alarm Trip
Two DPST contact sets
Standard: HI/LO alarms, normal acting,
two set/reset adjustments, non-latching
-
New microprocessor-based version
- Complete thermocouple selection
- Microprocessor controlled input linearization
- More burnout options
- Improved setpoint/reset point control
- User adjustable set and reset point(s)
- 8 Amp contacts
- Removable plugs for easier installation
- Input LoopTracker LED and output test button
- Alarm status LEDs
- Alarm options: LO, HI/HI, LO/LO, band alarm
- Optional reverse acting, optional latching
- DIN rail mount without tools
- Universal power 85-265 VAC, 60-300 VDC
- D option for 9-30 VDC, 10-32 VAC power
APD 1200, APD 1220
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
Click to see ALL Seneca products
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
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
K121
Thermocouple to DC Isolated Transmitter
Field Configurable
K109TC $250 *stock item*
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
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
K109TC
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
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
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)
Converter
Software mini CD (or download latest)
Adapter cable (std USB cable not included)
EASY-USB
Analog To Resistance Converter
Factory Configured
ATR167 call for quote
Open Datasheet
Download Datasheet
Specify input type and range
RTD
Thermocouple
Frequency to 5kHz
Pulse input from proximity sensor
Millivolt/Volts
Potentiometer or resistance
Specify output range
Potentiometer: 1k, 2k, 5k, 10k, 20k, 50k, 100k, 200k, custom
RTD
Thermocouple
Frequency to 5kHz
Pulse input from proximity sensor
Millivolt/Volts
Potentiometer or resistance
Specify output range
Potentiometer: 1k, 2k, 5k, 10k, 20k, 50k, 100k, 200k, custom
- High resolution true analog output
- 3-wire pot or 2-wire variable resistor output simulation
- Front zero and span pots
- Output level LED
- Full I/O/power isolation
- Universal power options: 8 VDC to 280 VAC
-
Convert a thermocouple to RTD signal to
match dissimilar equipment - Automatic gain control
ATR167
Analog To Potentiometer Converter
Factory Configured
ATP 168 call for quote
Open Datasheet
Download Datasheet
Specify input type and range
RTD
Thermocouple
Frequency to 5kHz
Pulse input from proximity sensor
Millivolt/Volts
Potentiometer or resistance
Specify output range
Potentiometer: 1k, 2k, 5k, 10k, 20k, 50k, 100k, 200k, custom
RTD
Thermocouple
Frequency to 5kHz
Pulse input from proximity sensor
Millivolt/Volts
Potentiometer or resistance
Specify output range
Potentiometer: 1k, 2k, 5k, 10k, 20k, 50k, 100k, 200k, custom
- Convert a signal to a potentiometer output
- 3-wire pot or 2-wire variable resistor output simulation
- 8 bit output resolution (255 count)
- Front zero and span pots
- Output level LED
- Full I/O/power isolation
- Universal power options: 8 VDC to 280 VAC
-
Replace mechanical pot used for control of
existing machinery - Automatic control of instrument gain or offset
-
Provide programmable adjustment for delays,
filters or time constants.
ATP168
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
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