DTW DTB Flame Proof Temperature Monitor Limiter
Ex Proof Heat Tracing Equipment - DTW DTB Flame Proof Temperature Monitor Limiter
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.
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.
DTW DTB Flame Proof Temperature Monitor Limiter
| TECHNICAL DATA | |
| Temperature setting range | -4 °C to +163 °C |
| Ambient temperature device | -40 °C to +60 °C |
| Operating temperature sensor | -40 °C to +215 °C |
| Storage temperature | -40 °C to +60 °C |
| Repeat accuracy | ±1.7 K |
| Switching differential | temperature controller 5 K |
| Switching hysteresis | temperature limiter 10 K |
| Switching point | ±4.5 K (accuracy at 50 °C sensor temperature and 21 °C ambient temperature (falling) |
| Capillary tube (made of stainless steel) |
Length: 3000 mm Diameter: 2 mm Bending radius: 15 mm Operating temperature range: -50 °C to +215 °C |
| Sensor (made of stainless steel) |
Length: 203 mm Diameter: 8 mm Operating temperature range: -50 °C to +215 °C |
| Weight | 1.7 kg |
| Protection class | IP 65/NEMA 4, 7, 9 |
| Terminals | Terminal screws 4/2.5 mm² AWG 10-14 |
| Cable entries | 2 x M25 threaded hole |
| Enclosure | Aluminium die-casting, coted, with internal lid seal |
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.
