Hazardous-Rated Sensors for Mining Applications
CTC offers a full range of hazardous-rated sensors designed specifically for the demanding conditions of underground mining. Our sensors carry ATEX, IECEx, and ANZEx approvals, ensuring compliance with global safety standards for explosive atmospheres.
Why Choose CTC for Mining?
Our sensors are certified with the marking:
Ex ia I Ma
Here’s what that means for your application:
- Ex – Certified for use in explosive atmospheres.
- ia – Intrinsic Safety (IS): Limits electrical and thermal energy to prevent ignition.
- “a” = Highest level of protection, safe even with two independent faults.
- “a” = Highest level of protection, safe even with two independent faults.
- I – Designed for mining environments, including areas susceptible to firedamp (methane).
- Ma – Equipment Protection Level (EPL):
- M = Mining application.
- a = Highest protection level, suitable for Category M1 under ATEX, ensuring safety even during rare incidents.
Benefits of CTC Hazardous-Rated Sensors:
✔ Global certifications (ATEX, IECEx, ANZEx)
✔ Maximum safety for underground mining
✔ Proven reliability in harsh environments
Our Most Popular Models:

AC915
Nonincendive, intrinsically safe accelerometer, CSA North America Class 1, Division 1 and IECEx / ATEX Zone 0,1 approved, top exit 2 pin connector, 100 mV/g, ±10%

AC916
Nonincendive, intrinsically safe accelerometer, CSA North America Class 1, Division 1 and IECEx / ATEX Zone 0,1 approved accelerometer, top exit 2 pin connector, 100 mV/g, ±10%

AC980
Nonincendive, intrinsically safe triaxial accelerometer, CSA North America Class 1, Division 1 and IECEx / ATEX Zone 0,1 approved, side exit 4 pin mini-MIL connector, 100 mV/g, ±10%

AC998
Nonincendive, intrinsically safe accelerometer, ANZEx Zone 0,1 approved, side exit 2 pin connector, 100 mV/g, ±10%
We offer a wide variety of sensitivities, form factors, and optional dual output with temperature configurations to meet your specific needs.