Signal Conditioners, Alarms, Transmitters for Thermocouples and RTD Temperature

RTD Alarms and Transmitters
Lifetime Warranty on API Modules LoopTracker^® LEDs Hot-Swappable Plug-In Design Zero and Span Transmitter Output Calibration Push to Test Output Full I/O/Power Isolation Click on PDF links below for product information	Literature and Links API product brochure Options & accessories Cross reference Regulatory Compliance page UL Approvals API modules USA API modules Canada APD modules USA APD modules Canada	Reference Info Sink or Source LoopTracker and Output Test Signal Conditioner Terminology Industry Terminology RFI & EMI Ohm's Law What is a Ground Loop? Installation FAQs Applications Dam Bubbler Measure Heat Exchanger Δ Temperature Control Heat Exchanger Δ Temperature Chiller Temperature Bearing Temperature Motor Temperature Motor Overheating Motor Bearings	How to Order Select a model See data sheet for ordering info and options Note that options affect pricing Request a quote via chat or call us 2-5 day typical lead time + shipping time 5-10 day lead time for quantities of 5 or more + shipping time To place your order Call 800-942-0315 for credit card order Find your authorized representative Call us to find your local distributor Set up an account to use a purchase order Outside the USA?
Model	Input/Output	Features	Product
Thermocouple Input Alarm Trips Factory Configured New Versions 12-11-2018 API 1200 G from $279 API 1220 G from $299 Open Datasheet Download Datasheet Old Version API 1200 G (discontinued) API 1220 G (a few left) 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	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 for 85-265 VAC, 60-300 VDC power D option for 9-30 VDC power	API 1200 G, API 1220 G
RTD Input Alarm Trips Factory Configured APD 1400 from $289 APD 1420 from $309 Open Datasheet Download Datasheet	Specify RTD type and temperature range Factory configured 10 Ω to 2000 Ω RTD including 100 Ω: 0.00385α, 0.00391α, 10 Ω Cu, 1000 Ω Ni-Fe, 120 Ω Ni or Special APD 1400 Single Alarm Trip Dual SPDT contact sets Standard: HI alarm, non-latching, normal acting See data sheet for alarm options APD 1420 Dual Alarm Trip 2 independent SPDT contact sets Standard: HI/LO alarms, non-latching, normal acting See data sheet for alarm options	2-wire or 3-wire RTD Lead wire compensation for 3-wire 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 1400, APD 1420
RTD Input Alarm Trips Factory Configured API 1400 G from $279 API 1420 G from $299 Open Datasheet Download Datasheet	Specify RTD type and temperature range Factory configured 10 Ω to 2000 Ω RTD including 100 Ω: 0.00385α, 0.00391α, 10 Ω Cu, 1000 Ω Ni-Fe, 120 Ω Ni or special API 1400 G Single Alarm Trip One DPDT contact set Standard: HI alarm, normal acting, adj. deadband, non-latching See data sheet for alarm options API 1420 G Dual Alarm Trip Two SPDT contact sets Standard: HI/LO alarms, normal acting, 1% deadband, non-latching See data sheet for alarm and deadband options	User adjustable setpoint(s) 2-wire or 3-wire RTD Lead wire compensation for 3-wire 8 Amp contacts Hot-swappable plug-in design Input LoopTracker LED Alarm status LEDs Alarm options: LO, HI/HI, LO/LO Optional reverse acting Optional latching alarms 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 1400 G, API 1420 G
Universal Input to DC Isolated Signal Conditioner Field Programmable APD 8000 from $399 Open Feature Summary Download Feature Summary Open Datasheet Download Datasheet	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	Switch and pushbutton setup Removable plugs Input LoopTracker LED Output test button Full I/O/power isolation Selectable output sink/source 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 Temperature Input to DC Isolated Transmitter Field Programmable APD 4000 from $375 Open Feature Summary Download Feature Summary Open Datasheet Download Datasheet	Field programmable inputs Thermocouples: J, K, T, E, R, S, N, B, C, D, G, M, P RTDs: 2, 3, or 4 wire, 10Ω to 8000Ω RTDs Thermistors: 44000 series, YSI 400, Spectrum Custom input available 18 field selectable 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	Covers all common temperature sensors Removable plugs Input LoopTracker LED Output test button Full I/O/power isolation Selectable output sink/source 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 4000
Thermocouple to DC Isolated Transmitter Factory Configured APD 4130 from $375 Open Datasheet Download Datasheet	Factory set input range Thermocouple: J, K, T, E, R, S, N, B, C, D, G, M, P Custom input available Factrory set output range Voltage: 0-1 V to 0-10 V, ±5 V, ±10 V Current: 0-2 mA to 4-20 mA Can be wired for sink or source	±0.25 % accuracy Removable plugs Input LoopTracker LED Output test button Full I/O/power isolation Selectable output sink/source 20 V output loop power supply Universal power 85-265 VAC, 60-300 VDC D option for 9-30 VDC, 10-32 VAC power	APD 4130
Thermocouple to DC Isolated Transmitter High Accuracy Factory Configured APD 4131 from $395 Open Datasheet Download Datasheet	Factory set input range Thermocouple: J, K, T, E, R, S, N, B, C, D, G, M, P Custom input available Factrory set output range Voltage: 0-1 V to 0-10 V, ±5 V, ±10 V Current: 0-2 mA to 4-20 mA Can be wired for sink or source	±0.1 °C Accuracy Removable plugs Input LoopTracker LED Output test button Full I/O/power isolation Selectable output sink/source 20 V output loop power supply Universal power 85-265 VAC, 60-300 VDC D option for 9-30 VDC, 10-32 VAC power	APD 4131
RTD or Thermistor Input to DC Isolated Transmitter Factory Configured APD 4002 from $375 Open Datasheet Download Datasheet	Factory set input range RTD: 2, 3, or 4 wire, 10 Ω to 8000 Ω RTD Thermistor: 44000 series, YSI 400, Spectrum Custom input available Factrory set output range Voltage: 0-1 V to 0-10 V, ±5 V, ±10 V Current: 0-2 mA to 4-20 mA Can be wired for sink or source	Covers all common RTDs and Thermistors Removable plugs Input LoopTracker LED Output test button Full I/O/power isolation Selectable output sink/source 20 V output loop power supply Universal power 85-265 VAC, 60-300 VDC D option for 9-30 VDC, 10-32 VAC power	APD 4002
Universal RTD to DC Isolated Transmitter Field Programmable APD 4151 from $395 Open Datasheet Download Datasheet	Field programmable input RTD: 2, 3, or 4 wire, 10 Ω to 8000 Ω RTD Custom input available 18 field selectable 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	Covers all common RTD sensors Removable plugs Input LoopTracker LED Output test button Full I/O/power isolation Selectable output sink/source 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 4151
Universal Thermistor to DC Isolated Transmitter Field Programmable APD 4152 from $395 Open Datasheet Download Datasheet	Field programmable input Thermistor: 44000 series, YSI 400, Spectrum Custom input available 18 field selectable 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	Covers all common thermistor sensors Removable plugs Input LoopTracker LED Output test button Full I/O/power isolation Selectable output sink/source 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 4152
Universal Thermocouple to DC Isolated Transmitter Field Programmable APD 4351 from $395 Open Datasheet Download Datasheet	Field programmable input Thermocouple: J, K, T, E, R, S, N, B, C, D, G, M, P Custom input available 18 field selectable 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	Covers all common thermocouples Removable plugs Input LoopTracker LED Output test button Full I/O/power isolation Selectable output sink/source 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 4351
RTD to DC Isolated Transmitter Factory Configured APD 4001 from $375 Open Datasheet Download Datasheet	Specify RTD type and temperature range 10 Ω to 2000 Ω RTD including 100 Ω: 0.00385α, 0.00391α, 10 Ω Cu, 1000 Ω Ni-Fe, 120 Ω Ni or special Specify output range 0-1 V to 0-10 V ±1 V to ±10 V 0-1 mA to 0-20 mA, 4-20 mA	RTD linearization Removable plugs I/O LoopTracker LEDs Output test button Full I/O/power isolation 2-wire or 3-wire RTD Lead wire compensation for 3-wire DIN rail mount Universal power 85-265 VAC, 60-300 VDC D option for 9-30 VDC, 10-32 VAC power	APD 4001
RTD to DC Isolated Transmitter Factory Configured API 4001 G L from $409 Open Datasheet Download Datasheet	Specify RTD type and temperature range Factory configured 10 Ω to 2000 Ω RTD including 100 Ω: 0.00385α, 0.00391α 10 Ω Cu, 1000 Ω Ni-Fe, 120 Ω Ni or special 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	RTD linearization Hot-swappable plug-in design I/O LoopTracker LEDs Output test button Full I/O/power isolation 2-wire or 3-wire RTD Lead wire compensation for 3-wire Uses API-008 8-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 4001 GL
Differential RTD to DC Transmitter Factory Configured API 4001 G SA-B from $409 Open Datasheet Download Datasheet	Specify temperature range Factory configured Two 100 Ω 0.00385α RTDs ΔT from 20F° to 900F° or 10C° to 500C° 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	Hot-swappable plug-in design I/O LoopTracker LEDs Output test button 2-wire or 3-wire RTD Lead wire compensation for 3-wire Linearized RTD Inputs can be field calibrated 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 4001 G SA-B
Thermocouple to DC Isolated Signal Conditioner Factory Configured API 4130 GL from $399 Open Feature Summary Download Feature Summary Open Datasheet Download Datasheet 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	Hot-swappable plug-in design Isolated & linearized Automatic cold junction compensation Full I/O/power isolation Repalces 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 for 85-265 VAC, 60-300 VDC power D option for 9-30 VDC power	API 4310 GL
Universal Temperature to DC Isloated Transmitter Field Programmable Sineax V624 Open Datasheet Download Datasheet Open Installation Manual Download Installation Manual Download Software	T/C types J, K, T, E, R, S, N, B, W5, W3, L, U RTD, 2-, 3-, or 4-wire 100 Ω 0.00385α 100 Ω 0.003916α Thermistor Software for custom input linearization Specify if Current or Voltage Output 0-2 mA to 0-20 mA, 20-0 mA 0-1 V to 0-10 V, 10-0 V	PC Programmable Reverse Output Programmable Custom Input Linearization Programmable Sensor Fault Response Removable Plugs 3.7 kV Input/Output/Power Isolation 24-60 or 85-230 VAC/VDC Powered 3 Year Warranty
Universal Input to 4-20 mA Loop Powered Transmitter Field Programmable K121 $149 in stock 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	K121
Thermocouple to DC Isolated Transmitter Field Configurable K109TC $169 in stock 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	K109TC
100 Ω RTD to DC Isolated Transmitter Field Configurable K109PT $169 in stock 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	K109PT
IsoSplitter^® Signal Splitter 1 RTD Input to 2 DC Outputs Factory Configured APD 1393 from $499 Open Datasheet Download Datasheet	Specify RTD type and temperature range Factory configured 10 Ω to 2000 Ω RTD including 100 Ω 0.00385α 100 Ω 0.00391α, 10 Ω Cu 1000 Ω Ni-Fe 120 Ω Ni or special 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 RTD 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	APD 1393
DuoPak^® 2 Channel Isolated Signal Conditioners Factory Configured APD 2000 Series from $519	Specify input range for each channel APD 2001 Ch1: DC mV/V/mA Ch2: RTD APD 2011 Ch1: RTD Ch2: RTD APD 2013 Ch1: RTD Ch2: Potentiometer APD 2015 Ch1: RTD Ch2: Strain gauge APD 2016 Ch1: RTD Ch2: AC mV/V/mA APD 2017 Ch1: RTD 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	APD 2000 Series RTD
ThermoPro^® Battery Powered RTD Temperature Indicator Field Configurable T16B $389 T16BBL: Backlit display $419 Open Datasheet Download Datasheet	T16BBL: Backlit display Specify RTD length Specify fixed or spring-loaded RTD Use spring-loaded for a thermowell Specify default temperature units –58.0°F to 392.0°F or –50.0°C to 200.0°C or 223.0 K to 473.0 K Choose auto shutoff time -5 five minutes (default if not specified) -10 ten minutes -30 thirty minutes -ON on/off only See data sheet for complete model numbers	Battery life to 1000 hrs BL red LED display backlight battery life up to 750 hrs Includes 2 AA batteries Configurable auto shutoff time Selectable °F, °C or K Selectable auto shutoff time Configurable min/max memory Able to retain min/max if power is off Pass code protected setup and calibration	T16B
ThermoPro^® Loop Powered Indicating RTD Transmitter Field Configurable T16L $389 Open Datasheet Download Datasheet	Specify RTD length Specify fixed or spring-loaded RTD Use spring-loaded for a thermowell Specify temperature range of output –58.0°F to 392.0°F or –50.0°C to 200.0°C or 223.0 K to 473.0 K See data sheet for complete model numbers	2-wire design Powered by 8-32 VDC 4-20 mA current loop User-programmable 4-20 mA output range Selectable °F, °C or K Pass code protected setup and calibration Old model number: F16LT	T16L
ThermoPro^® Indicating RTD Temperature Alarms Field Configurable T16ADA $479 T16ADABL: Backlit display $499 Open Datasheet Download Datasheet	Specify RTD length Specify fixed or spring-loaded RTD Use spring-loaded for a thermowell Specify default temperature units –58.0°F to 392.0°F or –50.0°C to 200.0°C or 223.0 K to 473.0 K See data sheet for complete model numbers	User-programmable alarms User-programmable alarm logic User-programmable setpoints 2 SPDT relays 1A@24 VDC, or 0.5A@115VAC, non-inductive Selectable °F, °C, or K temperature units Powered by 8-32 VDC, 10-32 VAC User configurable relay operation Push to test alarms Pass code protected setup and calibration	T16ADA
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 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	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 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
USB - UART TTL Converter EASY-USB $109 in stock 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
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	S315

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RTD Alarms and Transmitters

Literature and Links

API product brochure Options & accessories Cross reference Regulatory Compliance page

UL Approvals

Reference Info

Applications

How to Order

Thermocouple Input Alarm Trips

New Versions 12-11-2018 API 1200 G from $279 API 1220 G from $299

Old Version API 1200 G (discontinued) API 1220 G (a few left)

RTD Input Alarm Trips

APD 1400 from $289 APD 1420 from $309

RTD Input Alarm Trips

API 1400 G from $279 API 1420 G from $299

Universal Input to DC Isolated Signal Conditioner

Field Programmable

APD 8000 from $399

Universal Temperature Input to DC Isolated Transmitter

Field Programmable

APD 4000 from $375

Thermocouple to DC Isolated Transmitter

APD 4130 from $375

Thermocouple to DC Isolated Transmitter High Accuracy

APD 4131 from $395

RTD or Thermistor Input to DC Isolated Transmitter

APD 4002 from $375

Universal RTD to DC Isolated Transmitter

Field Programmable

APD 4151 from $395

Universal Thermistor to DC Isolated Transmitter

Field Programmable

APD 4152 from $395

Universal Thermocouple to DC Isolated Transmitter

Field Programmable

APD 4351 from $395

RTD to DC Isolated Transmitter

APD 4001 from $375

RTD to DC Isolated Transmitter

API 4001 G L from $409

Differential RTD to DC Transmitter

API 4001 G SA-B from $409

Thermocouple to DC Isolated Signal Conditioner

API 4130 GL from $399

API 4130 GL sold before 07-12-16

Universal Temperature to DC Isloated Transmitter

Field Programmable

Sineax V624

Universal Input to 4-20 mA Loop Powered Transmitter

Field Programmable

K121 $149 *in stock*

Thermocouple to DC Isolated Transmitter

Field Configurable

K109TC $169 *in stock*

100 Ω RTD to DC Isolated Transmitter

Field Configurable

K109PT $169 *in stock*

IsoSplitter® Signal Splitter 1 RTD Input to 2 DC Outputs

APD 1393 from $499

DuoPak® 2 Channel Isolated Signal Conditioners

APD 2000 Series from $519

ThermoPro® Battery Powered RTD Temperature Indicator

Field Configurable

T16B $389 T16BBL: Backlit display $419

ThermoPro® Loop Powered Indicating RTD Transmitter

Field Configurable

T16L $389

ThermoPro® Indicating RTD Temperature Alarms

Field Configurable

T16ADA $479 T16ADABL: Backlit display $499

Head-Mount RTD Transmitter, Non-Isolated

Field Programmable

T120 $89 *in stock*

Head-Mount Universal Transmitter, Isolated

Field Programmable

T121 $159 *in stock*

USB - UART TTL Converter

EASY-USB $109

4 Digit 4-20 mA Loop Powered Display

Field Rangeable

S315 $139 *in stock* S315-IP66 $300

API product brochure
Options & accessories
Cross reference
Regulatory Compliance page

New Versions 12-11-2018
API 1200 G from $279
API 1220 G from $299

Old Version
API 1200 G (discontinued)
API 1220 G (a few left)

APD 1400 from $289
APD 1420 from $309

API 1400 G from $279
API 1420 G from $299

Thermocouple to DC Isolated Transmitter
High Accuracy

K121 $149 in stock

K109TC $169 in stock

K109PT $169 in stock

IsoSplitter^® Signal Splitter
1 RTD Input to 2 DC Outputs

DuoPak^® 2 Channel Isolated Signal Conditioners

ThermoPro^®
Battery Powered RTD Temperature Indicator

T16B $389
T16BBL: Backlit display $419

ThermoPro^®
Loop Powered Indicating RTD Transmitter

ThermoPro^®
Indicating RTD Temperature Alarms

T16ADA $479
T16ADABL: Backlit display $499

T120 $89 in stock

T121 $159 in stock

S315 $139 in stock
S315-IP66 $300