When a sensor lasts 10–20 years instead of 3–5, mounting takes 30 seconds instead of five minutes, and the internal construction prevents condensation — total lifecycle cost is lower, even when the upfront price is higher.
Two sensors. Same purpose. Different construction.
Both measure temperature using a Pt100 resistance element. The difference lies in how that element is protected and connected — and that determines the sensor's service life, accuracy, and ease of installation.
Mineral insulated · Pt100
Element: Pt100 Cl.B · IEC 60751
Construction: Mineral insulation (MgO)
Head: NAA/SUZ with spring clip (IP67)
Wiring: 4-wire · full resistance compensation
Max
temperatūra: +600°C
Standard · Pt100
Element: Pt100 · soldered chip
Construction: Wires in metal tube · air gap
Head: DIN B with screw-on lid
Wiring: 2 or 3-wire
Max
temperatūra: +250°C (atkarīgs no izolācijas)
What's inside: with mineral insulation and without
From the outside, both sensors look similar — a stainless steel tube with a connection head. The difference is on the inside.
Mineral insulated · cross-section
Densely compressed MgO powder fills all the space between the conductors and the sheath. No air — no condensation.
Standard Pt100 · cross-section
An air gap between the wires and the tube. Moisture can enter through the cable inlet and condense.
Detailed comparison
| Parameter | Mineral Insulated Sensor | Standard Sensor |
| Temperature range | Up to +600°C | Up to +250°C (depends on insulation) |
| Vibration resistance | Excellent — MgO absorbs shocks | Limited — loose wires can break |
| Moisture protection | Hermetic — MgO blocks moisture | Air gap allows condensation to form |
| Flexibility | Probe can be bent without loss of accuracy | Rigid sensor head, non-bendable |
| Response time | Fast heat transfer through dense MgO | Slower due to air gap |
| Mounting time | ~30 seconds (NAA/SUZ clip) | ~5 minutes (DIN B screw-on lid) |
| Head type | NAA/SUZ — spring clip, IP67 | DIN B — screw-on lid, lid detaches |
| Wiring | 4-wire — full resistance compensation | 2 or 3-wire |
| Service life | 10–20 years | 3–5 years |
| Initial price | Higher | Lower |
| Total lifecycle cost | Lower — less frequent replacement, less downtime | Higher — more frequent replacement, more maintenance |
Why an MI sensor is the better choice
30
second mounting time with the NAA/SUZ clip
10–20
10–20 — years of service life in industrial conditions
4 vadi
4 wires — full resistance
compensation
IP67
protection class
with the NAA/SUZ head
Mineral insulated sensor advantages
MgO hermetic seal blocks moisture and condensation
Withstands vibration, shock, and corrosive environments
Probe can be bent and shaped to fit the installation
NAA/SUZ clip — mounting without tools
4-wire wiring eliminates cable resistance error
Kopējās izmaksas dzīves ciklā ir zemākas
When a standard sensor is acceptable
Temperature does not exceed +200°C
No vibration or aggressive environment
Sensor is in an easily accessible location
Budget is the primary constraint
Temporary or short-term installation
April — 20% off all temperature sensors
Use the discount code at checkout or contact us for a consultation.
Code: TEMP20