Thermocouple: cartridge with thermocouple.

The best complement.

Cartridges can be made with inbuilt sounding lead at any point of the cartridge, according to the customer's requirements. The advantages of the sounding lead are countless. For instance, length of cartridge life, accuracy e of localized temperature, energy saving and where a conventional sounding lead cannot be housed due to a question of space. Several types of temperature regulators which require a special thermocouple can be found on the market, eg, J or K.

Thermocouple isolated "Tr.A"

Model is fully insulated against the heating wire of the connections and the protecting sheath. Among its qualities the protection of the instruments for temperature measurements stands out. This is very important as the reading takes place within a few minutes and the reading-out continues to be quick.

Cartridge Heater

Thermocouple "Tr.B"

The joint of the thermocouple, in this model, is in contact with the protecting sheath of the cartridge heater, thereby giving a quick and accurate reading where the cartridge is housed.

Cartridge Heater

Thermocouple "Tr.C"

This model can be housed according to the customer's requirements. This is important for long cartridges so that a medium temperature is obtained.

Cartridge Heater Installation tips

When a thermocouple cartridge heater is installed, several factors must be noted. If the temperatures of several cartridge heaters need to be controlled, it is advisable to place the thermocouple in the middle of the group. The thermocouple should never be placed at one of the endings of the cartridge as this will send out wrong inner temperature information to the heater. The wire of the thermocouple is 1 meter long, you should compensate and adjust your regulator to have a more accurate temperature reading.

THERMOCOUPLE CHARACTERISTICS TABLE
ANSI / ASTM
Symbol Single
Generics names
Color Codings
Magnetic
Enviroment (Bare Wire)
Individual Conductor
Overall Jacket Extension Grade Will
Yes
No

J
JP
JN
Iron
Constatan, Nominal
Composition: 55% Cu, 45% Ni
White
Red
Black
X
X
Reducing Vacuu, inert. Limited use in oxidizing at High Temperatures. Not recommended for low temps.

K

KP
KN
Chromel, Nominal Composition: 90% Ni, 10% Cr Alumel®
Nominal Composition: 95% Ni, 2% Mn, 2$ Al

Yelo
Red

Yellow
X
X
Clean Oxidizing and Inert. Limit use in Vacuum or Reducing.
Cartridge Heater
TOLERANCE OF THERMOCOUPLES
ANSI/ASTM
Range
Standar
Special
Range
Standard
Special
Temperature
ºC
Temperature
ºF
-200º to -67º
±1.5ºT
±0.8%T*
-328º to -88º
±1.5% (T-32)
±0.8% (T-32)*
-67º to -62º
±1º
±0.8%T*
-00º to -80º
±1.8º
±0.8% (T-32)*
J
-62% to 125º
±1º
±0.5*
-80º to 257º
±1.8º
±0.9*
125º to 133º
±1º
±0.4%T
257º to 272º
±1.8º
±0.4%(T-32)
133º to 370º
±0.75%T
±0.4%T
272º to 700º
±0.75% (T-32)
±0.4% (T-32)
-200º to -110º
±2%T
-
-328º to -166º
±2% (T-32)
-0
-200 to -110º
±2.2º
-
-166º to 32º
±3.96º
±1.98*
K
0º to 275º
±2.2º
±1.1*
32º to 527º
±3.96º
±1.98*
275º to 293º
±2.2º
±0.4%T
527º to 560º
±3.96º
±0.4% (T-32)
293º to 1260º
±0.75%T
±0.4%T
560º to 2300º
±0.75% (T-32)
±0.4% (T-32)

Themal Fuses

REF:"Tft"

Thermal fuses are installed inside the cartridge heater and are used to limit the heating element temperature, producing a cut-off electricity, protecting from overheating. Once open-system occurs, it can’t be rearmed. It requires around 2 ½” (43.5mm) at the beginning or ending of the cartridge to place it.

Cartridge Heater

Themortast

REF: "Tmt"

Thermostats are factory made in a broad range of temperature, max 300ºF (150ºC). Its function is to cut the electrical input, when it reaches the right temperature, and when the temperature goes down, they let electricity pass again.

Cartridge Heater REF: "PT100"

A PT100 is a temperature sensor. It consists in a platinum wire that at 0ºC has 100 ohms and when the temperature grows, its electrical resistance also grows. The PT100 can easily give precise readings of a decimal of degree with the advantage that the PT100 don’t split up gradually giving wrong readings. It’s just that normally it opens, whereby the measuring device detects immediately the sensor failure and gives notice. The PT100 can also be settled at a distance of the measurer without any problem (until 30 meter) using the conventional copper wire to make the extension.In general a PT100 doesn’t should be set in places submitted to excessive vibration, because it is probably that it breaks.

Depending on the diameter it can be placed at the top of the cartridge, at leads side “S” or at the bottom “F”. For thermostats and thermal fuses, placing space is 2” (30.8mm). PT100 needs 1”(25.4mm).

Cartridge Heater
mm
6.5
8
10
12.5
16
20
25
PT 100
S
S
S,F
S,F
S,F
S,F
S,F
THERMOSTAT
-
-
-
S
S,F
S,F
S,F
THERMOFUSIBLE
-
-
-
S
S,F
S,F
S,F
inches
1/2"
5/16"
3/8"
1/2"
5/8"
3/4"
1"
PT 100
S
S
S,F
S,F
S,F
S,F
S,F
THERMOSTAT
-
-
-
S
S,F
S,F
S,F
THERMOFUSIBLE
-
-
-
S
S,F
S,F
S,F