THERMOSTAT

BSTW II Safety Temperature Monitor And BTB II BSTB II Limiter 25 A Fail-Safe

BSTW II temperature monitors and BTB II/BSTB II temperature limiters are ON/OFF thermostats in Ex e certified polyester enclosures. In addition to the use of conventional power cables, BSTW II and BTB II/BSTW II are approved for the direct connection of self-limiting BARTEC heating circuits in the enclosure terminals. A verification of thermal safety and a further approval by any third party authority is not necessary. The benefit to the customer is obvious. Any directly connected self-limiting heating circuit considerably reduces the number of junction boxes and installation cost. BSTW II and BTB II/BSTB II monitor ambient temperatures as well as different surface temperatures. In accordance with EN 60079-30-1, BTB II and BSTB II fail-safe temperature limiters are designed to switch off and remain switched off when the preset limit temperature is reached. The restart lockout requires manual resetting directly at the device.

Application Areas:

• Industrial furnaces
• Heating systems
• Plastic processing machines
• Food processing equipment
• Chemical processes
• Laboratory equipment
• Power plants
• HVAC systems
• Extruder Heating
• Hot press applications.

FUNCTION

Any change in temperature in the sensor causes a change in the volume in the liquid-filled measuring system, which in turn results in a movement of the diaphragm membrane, which is connected to a transmission mechanism, and this opens a microswitch. If the sensor temperature exceeds the set value, the contacts 1 and 2 remain continuously open. The contacts in the BTB II/BSTB II remain continuously open until there is a manual intervention.

FEATURES

• Direct connection of self-limiting heating tapes by means of BARTEC’s cold-applied technology reduces wiring and materials
• Switching voltage up to 400 V and 2 M20 x 1.5 boreholes as standard for an enhanced operation of EKL heating circuits
• Safety cut-out temperature -45 °C or -55 °C for reliable operation, even in very cold conditions
• Minimum operating temperature -55 °C for all standard variants for use all over the world without restrictions
• Wide regulating range from -20 °C to +500 °C, depending on the switch insert

BSTW II

Fail-safe safety temperature monitor.

• Falling calibration to maintain the temperature during the process
• Turns on and off automatically whenever the temperature exceeds or drops below the setpoint value

BTB II

Fail-safe temperature limiter.

• Rising calibration to limit temperature during the process
• Switches off and remains switched off once the limit temperatures are reached

BSTB II

Fail-safe safety temperature limiter.

• The BSTB II functions in the same manner as the BTB II temperature limiter, whereby the setting range is limited here to 0 °C to 130 °C or 130 °C to 190 °C based on the temperature classes T3 and T4.

STW II Capillary Tube Thermostat 16 A Fail-Safe

The STW II is a compact ON/OFF type capillary tube thermostat, housed in an Ex e certified polyester enclosure. Heaters, fans, motors and other equipment are energised and de-energised by means of this thermostat when specific temperature ranges are exceeded. This device can also be used to control the temperature in air or on various surfaces.

FUNCTION

Any change in temperature at the sensor bulb causes a change in the volume of fluid in the measuring system, which in turn results in a movement of the diaphragm membrane. This membrane is connected to a mechanical device that activates a microswitch. If the temperature at the sensor bulb exceeds the pre-set value, terminals 1 and 4 are opened. If there is a rupture or break in the sensor tube (leakage), then the switch remains permanently open (fail-safe). If the temperature falls below the minimum setting, the autocontrol opens the circuit but closes again on temperature rise.

APPLICATION EXAMPLE

The STW II thermostat can directly switch temperature-dependent equipment loads (heaters etc.) of up to 16 A. Higher rated currents can be switched by means of a contactor; the STW II switches the contactor coil. If an interlock is installed by means of an additional relay (according to DIN VDE 0116), the STW II can also be used as a limiter.

FEATURES

• Small construction
• Varying temperature ranges can be combined in one enclosure
• Can be mounted directly in Zone 1
• Temperature can be set in Zone 1
• Many variants available

DTW DTB Flame Proof Temperature Monitor Limiter

The flame-proof encapsulated temperature controllers/limiters (DTW/DTB) are designed for (trace)-heating applications in the Ex area. They can be used both for protection against frost and for maintenance temperature applications. Heating units and other operating equipment are switched on and off by means of the temperature controller when the temperature is too high or too low. The DTB temperature limiter is designed with resetting lockout; resetting (restarting) is only possible on the device. Can be used for monitoring temperature in the air or on surfaces.

FUNCTIONS

A change in temperature in the sensor causes a change in volume in the fluid filled in the measuring system, which in turn results in a movement of a membrane, which is connected to transmission mechanics and activates a microswitch. If the sensor temperature exceeds the pre-set level, the contact is actuated. The temperature limiter switches off permanently if the temperature is exceeded. Once the temperature drops, the temperature limiter can be unlocked manually. If there is a break in the measuring system (leakage), the circuit remains open permanently.

APPLICATİON EXAMPLE

DTW and DTB switch temperature-dependent equipment (heating units) of up to 22/16 A directly. Higher switching currents or 3-phase applications are switched by means of a contactor.

• 22 A switching capacity
• Flame-proof enclosure
• ATEX, UL, CSA, FM Approval

Application Areas:

• Oil and Gas Refineries: Temperature monitoring of pipelines and equipment in environments with high temperatures and explosive gases.
• Chemical Industry: Temperature monitoring of reactors and storage tanks for controlling hazardous chemical reactions and preventing overheating.
• Paint and Varnish Production Facilities: Temperature control of ovens and drying chambers in production processes using flammable solvents.
• Flour and Grain Silos: Early detection of temperature increases in storage silos to prevent dust explosion risks.
• Mining: Monitoring the overheating of electrical equipment and conveyor belts in underground mines.
• Power Plants: Continuous temperature monitoring of high-temperature operating equipment such as turbines and boilers.

MTE Mini Termostat

• Compact design
• High switching capacity
• Extremely adaptable to the surrounding conditions
• Protection class IP 65/66

This Mini-thermostat is used to monitor the ambient temperature of heating systems as well as for the control of internal temperatures inside protective transmitter boxes or control and switchgear cabinets. In addition, it can be used for the control (signalling) of too low or too high a temperature or as an alarm contact.

STRUCTURE

A temperature sensor is encapsulated in an explosion-proof metal tube. The standard version features an external M20 thread. You can choose either a version with a cast rubber cord or one that is directly mounted to an Ex terminal box. A special version is also available with a flange fixing.

Application Areas:

• Small ovens
• Laboratory equipment
• Heating and cooling systems
• Food processing equipment
• Plastic processing machines
• 3D printers
• Incubators
• Extruder Heating
• Hot press applications.

KTE-m Cable Thermostat

• Very small construction
• ATEX gas and dust approval
• High switching current
• Wide operating temperature range
• Ready for connection, maintenance-free

The extremely compact BARTEC bimetallic thermostat integrated in a cable is mostly used in hazardous (potentially explosive) areas for applications in which devices are to be protected against frost. This thermostat can be used to regulate internal temperatures of switch and control cabinets, transmitter protection boxes, measuring equipment etc.. It can also be used to monitor (indicate) excessively high or low temperatures or also as an alarm contact. The application assures the greatest possible reliability because of the conformance to the required minimum temperatures

Application Areas:

• Freeze protection of pipelines and tanks
• Control of heating cables
• Cold room heating
• Floor heating
• Industrial process heating
• HVAC systems
• Extruder Heating
• Hot press applications.

STRUCTURE

The thermostat is built into a casting element and can be mounted either over the borehole in the mounting sheet or suspended freely in the air.

FUNCTION

The ambient temperature is measured through the surface of the thermostat. The integrated, explosion-proof bimetallic thermostat switches the connected heating in accordance with this ambient temperature.

KTE-d Cable Thermostat

• Very small construction
• ATEX gas and dust approval
• High switching current
• Wide operating temperature range
• Ready for connection, maintenance-free

The compact BARTEC bimetallic thermostat integrated in a cable is mostly used in hazardous (potentially explosive) areas for applications in which devices are to be protected against frost. This thermostat can be inserted both for the outside temperature monitoring and for the regulation of interior temperatures of switch and control cabinets, transmitter protection boxes, measuring equipment etc. It can also be used to monitor (indicate) excessively high or low temperatures or also as an alarm contact. The application assures the greatest possible reliability because of the conformance to the required minimum temperatures

Application Areas:

• Freeze protection of pipelines and tanks (dual circuit control)
• Control of heating cables (dual circuit control)
• Cold room heating (dual circuit control)
• Floor heating (dual circuit control)
• Industrial process heating (dual circuit control)
• HVAC systems (dual circuit control)
• Extruder Heating (dual circuit control)
• Hot press applications (dual circuit control)
• Redundant heating systems (dual circuit control)

STRUCTURE

The thermostat is built into an aluminum body. The thermostat can be installed either over the mounting hole with M6 thread or with the M20 connecting thread.

FUNCTION

The ambient temperature is measured through the surface of the thermostat. The integrated, explosion-proof bimetallic thermostat switches the connected heating in accordance with this ambient temperature

Mini-Thermostat Bimetall Temperature Switch

• Very small construction
• Frost-protection

This mini-thermostat is used both for monitoring the temperature outside the heating systems and also for regulating the temperature inside transmitter protection boxes or switch and control cabinets. It can also be used for monitoring (indicating) temperatures that are too high or too low and it can serve as an alarm contact.

Application Areas:

• Small ovens and heaters
• Laboratory equipment
• Food processing equipment
• Plastic processing machines
• 3D printers
• Incubators
• Refrigerators and freezers
• Coffee machines and water heaters
• Extruder Heating
• Hot press applications
• Overheating protection for motors and electronic devices
• Air conditioning systems
• Ventilation systems

KRM Capillary Tube Thermostat 16 A

• 16 A switching capacity
• Compact enclosure
• Double units are standard

The weather-proof capillary tube thermostat, KRM, is a mechanical change-over controller housed in a polyester enclosure. Heaters, fans, motors and other equipment are energised and de-energised when temperatures fall below or rise above certain limits. It can also be used to control the temperature in air, liquids and on various surfaces.

FUNCTION

Any change in temperature at the sensor causes a change in the volume of fluid in the measuring system, which in turn results in a movement of the diaphragm membrane. This membrane is connected to a mechanical device that activates a microswitch. If the temperature at the sensor bulb exceeds the pre-set value, terminals 1 and 2 are opened. If the temperature falls below the minimum setting, the contacts automatically close

APPLICATION EXAMPLE

The KRM thermostat can directly switch temperature-dependent equipment loads (heaters etc.) of up to 16 A. Higher switching currents of 3-phase applications are switched by means of a contactor

DEPU Complete Digital Solution – Controller-Limiter-Power Setpoint

• Complete solution for trace heating: controller, limiter and power setpoint adjustment all in one unit
• Alteration of adjusting parameters also possible in potentially explosive areas
• Current carrying capacity 25 A
• Fault-free full wave contro
• Sensor input, intrinsically safe
• Allows easy output adaptation to heating circuit changes

DEPU serves as complete solution for pipe heating and provides temperature control, limitation and power output control in one device. DEPU is ATEX-certified and approved for use in potentially explosive areas.

Application Areas:

• Industrial furnaces and dryers
• Heat treatment plants
• Plastic processing machines (extruders, injection machines)
• Food processing equipment
• Chemical processes
• Laboratory equipment
• Power plants
• HVAC systems
• Extruder Heating
• Hot press applications.

STRUCTURE

All functional units are integrated in a standard Ex e aluminium enclosure. Connection to mains is established through 6 mm² tension clamp terminals

FUNCTION

The controller is designed as a ON/OFF controller and measures the temperature through RTD sensor inputs. The limiter works as an independent system and measures the temperature at the hot spot with its own sensor. If the temperature exceeds the limit value the limiter interrupts the heating circuit permanently from mains and a fault alarm signal is given

The power output controller works in interference free full wave control mode by means of a semi-conductor relay. Two 7-segment displays guarantee good readability of the controller and limiter temperature values through the lid's w

PSBL System Mini-Thermostat

This mini-thermostat is used both for monitoring the temperature outside the heating systems and also for regulating the temperature inside transmitter protection boxes or switch and control cabinets. It can also be used for monitoring (indicating) temperatures that are too high or too low and it can serve as an alarm contact.

Application Areas:

• Temperature control of small equipment
• Control of heating cables
• Cold room heating
• Floor heating
• Industrial process heating
• HVAC systems
• Extruder Heating (small scale)
• Hot press applications (small scale)
• Laboratory equipment
• Food processing equipment
• Cabinet heating
• Freeze protection
• Humidity control.