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Thermocouples

product description

The thermocouple device is the most widely used component to monitor the burner flame and to guarantee safety by detecting the presence or absence of flame. The thermocouples are used for both gas ovens and gas burners with pilot flame, or any kind of gas hobs. They are supplied with various lengths and different type of fittings.

We design and manufacture a wide range of highly reliable thermocouples for domestic and industrial applications which can be used with any type of gas. Depending on the customer requirements, the opening time in the ignition phase and their closing time in the shut-off timing of magnet units can be adjusted with proper use of thermoelement material and size. It is also possible to make thermocouple ranges from 15cm to 180cm.

Pars Flame Controls supplies range of thermocouples to the market which are able to equip different types of burner and to combine with different types of magnet. With customer requirement, it is possible to offer switch on time in 1 second as well as switch off time between 15 to 30 seconds thermocouples, in order to satisfy customer needs.

A thermocouple should satisfy customer needs by providing following product characteristics:

  • Safety and Reliability of use: to have a high-quality material and safe production processes in order to make a product that has a simple working system, in a small number of components of the electric circuit in which it is inserted to a magnet unit assembled in a valve. Therefore, it is a surveillance system amongst most efficient and economic available on the market.
  • Flexibility in use: a thermocouple product is designed for ease of assembly to equip each type of burner and to combine with any type of magnet, that is achieved by range of temperature sensors with different levels of sensitiveness.
  • Demanding Conditions: our thermocouple products satisfy very challenging conditions of temperature and time of permanence in the flame. Our laboratory tests are carried our for alternate thermic cycles to confirm the durability, safety, and reliability of our products.
  • Range of types: based on different models of valves and burners, connections and typologies of thermocouples can be designed and manufactured to meet the customer requirements. The range can include: single or double wire thermocouples, fast-on or coaxial connections, special interrupted models for applications with thermostats or electronic control, and any type of other gas valves for cooking and heating applications.
  • Calibration: depending of the operative condition, the set up of a thermocouple shall be adjusted in our laboratory according to customer requirement prior to mass-production for sampling of customer.
  • Types of joints: this is an important stage of part of design and development of thermocouple which allows the choice of the most suitable type of hot joint, based on the temperature detected on the tip of the thermocouple and the type of magnet used.

Hob Thermocouples:

Single wire: an advantage of this type is there is no need to ground wire. Also, conductivity is carried out using the metal surface of the hob. The guarantee of a suitable contact between body and hob is obtained with thread and nut block to the burner or the cooking hob itself. Fastening with a clip is not recommended.

 

Fast-on connection: this is suitable for valves with fast-on connection. This model is equipped with a ground model wire thus allowing for an easy and safe fastening of the burner body with a clip. The ground wire can be fixed with a screw in a single point, preferably close to the tap.

 

Oven Thermocouples:

Pars Flame Controls is able to offer oven thermocouples for applications with thermostats, oven double wire with fast connections. Hence, the body of fastening the thermocouple can be customized based on the type of burner and fast coupling connections of fast-on for different types of gas valves.

The tubular thermocouple can be used for both gas ovens and gas burners with a pilot flame, or in ovens in which a connection thread to the thermostat is forecasted.

 

The double wire thermocouple is indicated for gas ovens.  The copper tubular part remains inside the cavity, guaranteeing mechanical and thermic protection to the phase wire and protecting it in its passage through the metal plate. Compared to the tubular models it has the advantage of cabling flexibility, favoring the speed of assembly.

 

Technical Data

Fixing connector torque: ~3Nm

Minimum bending radius: ≥ 15mm

A= Ignition Time

B= Shutdown Time

Ignition Time: ≤6 seconds

Shut down time: 30-60 seconds

F.E.M. at 100°C: ≥ 2mV

Resistance: =9 + (0.015 * L ) ± 4 m Ω

Maximum tip temperature: 800°C

 

Modifications

To define product range the following factors are considered from each customer:

  1. The thermocouple ranges are made for use of gas appliances in which normal intervention times are requested for both ignition and shutdown timing.
  2. The design of switch on-time in one second as well as switch off-time between 5-20 seconds would allow the needs of the norms in force and in line with strict market requirements.
  3. The thermocouples can be supplied in variety of length, e.g. from 200mm to 1800mm
  4. The thermocouples can be supplied with different sleeves and different fixing connectors.
  5. It is also possible to have the tip coated in aluminium alloy to protect against the formation of carbon deposits.
  6. The thermocouples are used with different burner sizes on one side and it can be adopted with different magnet units on the other side.
  7. Based on the type of the electro-magnet unit and the required temperature on the tip of thermocouple the joined shall be chosen during early stage of design and development.
  8. Different types in use of thermocouple applications are manufactured at our factory: 1) Tubular 2) Special interrupted models 3) oven double wire
  9. These models can be modified for applications with thermostats or electronic control and also for different connections such as jack, minijack, and fast on. Furthermore, the main body of the fastening the thermocouple can be modified according to customer needs’ based on the type of burner and fast coupling connections or fast on with different type of valves.
  10. Pars Flame Controls also provides thermocouple tips according to the customers need

 

Benefits of our thermocouples

  • Reliability of materials
  • A range of bodies that can be customised according to the type of the application
  • Fast in switch-on and switch-off stages
  • Easy snap-in installation
  • Easy installation with attached threaded nut
  • Variety of sensitive elements, for both long flame performance and rapid connection
  • Stainless steel tip for long life and resistance to heat blistering
  • Combination of copper and nickel alloys for good electrical conductivity
  • The copper tube is capable of protecting the central phase wire by the flexibility of the conductors enabling cabling
  • Various lengths available for multiple applications
  • Suitable for use with any magnet present on the market
  • Calibration of thermocouples for different operation conditions is an important part of the production
  • Following strict guidelines and rules of standards through manufacturing processes which is obtained through our 25 years of experience and expertise that gives reliable and safe product.

Benefits of our thermocouples:

  • A range of bodies that can be customised according to the type of the application
  • Easy snap-in installation
  • Easy installation with attached threaded nut
  • Variety of sensitive elements, for both long flame performance and rapid connection
  • Stainless steel tip for long life and resistance to heat blistering
  • Combination of copper and nickel alloys for good electrical conductivity
  • The copper tube is capable of protecting the central phase wire by the flexibility of the conductors enabling cabling
  • Various lengths available for multiple applications
  • Calibration of thermocouples for different operation conditions is an important part of the production
  • Following strict guidelines and rules of standards through manufacturing processes which is obtained through our 25 years of experience and expertise that gives reliable and safe product.

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Catalouge - Types of Thermocouples