Mineral insulated thermocouple
with connector termination
"DTMTC" range
Mineral insulated thermocouples are widely used for temperature measurement in many applications. To their essential characteristics (sensing element, insulation, protecting sheath and connection) those thermocouples add unique properties such as bending possibilities (to suit any environment) and a wide range of dimensions (from miniaturization to great lengths). The compensated connector termination offers quick and reliable connection.
• Most common thermocouples types: K, J, T, N, S
• Other thermocouples on request
New in 2010
Mineral insulated thermocouple with overmoulded plug
+++ improved resistance to vibrations and shocks
+++ strong and reliable contacts
+++ ergonomic
see our DTMTC7- K datasheet
Temperature range
From -200°C to + 1700°C. More information...
Operational and environment temperatures are two of the main criteria for selecting the diameter and material of the mineral sheath.
Temperature resistance of the main MI cables in neutral atmosphere:304L & 316L SS: + 700°C
310 (25/20) SS : + 1100°C
Inconel 600 : + 1150°C
Recommended usage temperature depending on thermocouple type and sheath diameter:
J
T
K and N
0,5 - 1 mm 260
260
700
1,5 mm 440
260
920
3 mm 520
315
1070
6 mm 720
370
1150
Temperature resistance of the connectors :
- standard : 200°C in continuous use and 250°C peaks
- high temperature : 420°C continuous use and 540°C peaks
Mechanical data
Bending diameter must be ³ 5 x sheath diameter
Compact mineral insulation (magnesium oxide) allows perfect insulation of the wires whichever shape is given to the thermocouple.
Accuracy
The accuracy depends on the thermocouple wire tolerances as per IEC 584 European standard
Response time
to reach x% of the temperature scale interval (in seconds)
|
Ø in mm |
63% |
90% |
|
> 0,5 |
0.4 |
0.7 |
|
1 |
0.5 |
0.8 |
|
1,5 |
0.8 |
1 |
|
2 |
1 |
1.5 |
|
3 |
1.2 |
2.1 |
|
4,5 |
2.3 |
4.3 |
|
6 |
3.5 |
7 |
|
8 |
8.1 |
18 |
Test carried out in compliance with UTE C46-201standard, on a type K thermocouple with ungrounded hot junction, inconel 600 sheath (indicative data)
Applicable standards
- IEC 584
- UTE 46201
Whenever requested by specific applications, other applicable standards are also complied with in compliance with our EMS (Specific calibration Requirements) procedure.
The most common dimensions are:
- MI cable diameter "D" : 0.5, 1, 1.5, 2, 3, 4.5, 6, 8 mm
- "L" sheath length: as per customer request, depending on sheath diameter and type
- immersion length: 10 x MI cable diameter
International colour code for cable and connectors:
|
symbol |
+ |
- |
Sheath |
|
JC |
black |
white |
black |
|
KC |
green |
white |
green |
|
TC |
brown |
white |
brown |
|
NC |
pink |
white |
pink |
|
SC / RC |
orange |
white |
orange |
|
BC |
grey |
white |
grey |
Same colour is used for connectors and thermocouples