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

Literature and Links

API product brochure
Options & accessories
Cross reference
Regulatory Compliance page

UL Approvals

Link to UL (requires login or sign-up)

UL file: E145968
See datasheets for applicable models

Reference Info

Thermocouple types
What is a Ground loop?
LoopTracker and Output Test
Sink or source


Monitor stack flare
Oven overtemp shutdown
Monitor chillers and freezers

How to Order

  1. Select a model
  2. See data sheet for ordering info and options
  3. Note that options affect pricing
  4. Request a quote via chat or call us
  5. 2-5 day typical lead time + shipping time
  6. 5-10 day lead time for quantities of 5 or more + shipping time
  7. To place your order
Model Input/Output Features Product

Thermocouple to DC Isolated Signal Conditioner

Factory Configured

API 4130 GL  from $429

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

  • 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 4130GLUL listed
API 4130 GL
Discontinued Temperature
APD 1430 RTD Band Alarm Trip
API 4000 G RTD or T/C to DC Signal Conditioners.
See APD 4000
API 4100 G Non-Isolated T/C-DC Transmitter.
Replaced by new design API 4130 GL
API 4130 GL
sold before 07-12-16
Non-microprocessor T/C-DC Transmitter.
Replaced by new design API 4130 GL
APD 4351 Microprocessor T/C-DC Transmitter.
See APD 4000
APD 4151 Microprocessor RTD-DC Transmitter.
See APD 4000
APD 4152 Microprocessor Thermistor-DC Transmitter.
See APD 4000