Sensor Sensing Probe Used for Fluid Torque (TVS-01) Detecting Temperature, Speed

• Customization: Available
• Installation Type: Tee Type
• Sensing Type: Resistive
• Model NO.: TVS-01
• Measuring Medium: Temperature
• IP Rating: IP65
• Certification: RoHS
• Customized: Non-Customized
• Detecting: Speed, Temperature
• Transport Package: Exporting Pacakge
• Specification: PT100, PT1000 temperature sensor
• Trademark: Yuanben
• Origin: China
• HS Code: 9026100000
• Production Capacity: 10K Pieces/Year

Product Description

Controler of temperature and speed used for fluid torque Coupling

1. Application
The controler of temperature and speed monitors the required operating condition of the fluid coupling contactlessly and requires no maintenance. Spraying and loss of operating fluid if the coupling overheats and the pollution of the environment associated with it can be avoided. In thecase of internal-gear drives the output speed (minimum value), in addition to the temperature, can be monitored. In this case the controler of temperature and speed cuts out immediately the output speed falls below its required value or the drive stops even before the coupling overheats. The controler of temperature and speed can be used on coupling and upward at peripheral speeds > 15 m/s. The transmitter is fitted to the coupling in place of the screw plug(fusible plug).


2. Operation
While the coupling is rotating and below the response temperature of 125ºC, each time the pick-up is passed the transmitter emits an impulse signal which is transmitted to the evaluating instrument. The pulse number is compared in the evaluating instrument with the required value set on the front plate and, when the pulse number is fallen below, causes the output relay to cut out.
If as a result of an operating fault the response temperature (oil temperature) exceeds the actuating temperature of 125ºC, the transmitter stops emitting pulses and the output relay of the evaluating instrument drops out. The output relay can trigger a fault signal or trip the drive cut-out.
The evaluating instrument has a time delay which prevents a fault signal during the drive starting phase. If the monitoring system has cut out, the operating fault must first be rectified. The transmitter must not be exchanged. After it has cooled down to below the actuating temperature, the coupling is once more ready to operate. Depending on the starting heating to be expected (moment of inertia of the drive unit), however, the drive should be switched on only at coupling temperatures under 90ºC.
Note:
If the coupling is started up again without cooling down, as would be possible because of the time delay, the coupling may further heat up (starting heating), and there is a risk that the fusible safety plug will operate.
3. Fitting
The controler of temperature and speed comprises the transmitter( probe of temperature and speed), the pick-up (magnetic sensor) and the evaluating instrument. The transmitter is fitted to the coupling housing in place of the screw plug (fusible plug or thermal trip plug).  Also the fusible safety plug (160ºC) remains in the coupling as an emergency safety device. The pick-up is positioned flush with the turning circle of the transmitter, so that there is a gap of 2 mm between the end faces of the transmitter and the pick-up. The pick-up must be mounted vibration free on a firm bracket or part of the bell-housing.
Flush-fitting in metal parts is also possible.
The evaluating instrument must preferably be installed in a switch cabinet of the control system
provided.
3.1 Fitting transmitter not included in our delivery
Retrofitting of the controler of temperature and speed in already installed fluid couplings is possible without reworking.

4. Component description
4.1 Transmitter
The transmitter comprises an stainless steel bearer screw with an in-built magnet system which changes its field strength according to the temperature. The magnet system is designed so that at a pick-up distance of 2 mm a cut-out temperature of 125ºCresults. If the gap between the pick-up and the transmitter is greater, the controler of temperature and speed donot work at lower temperatures.
4.1.1 Technical data


4.2 Pick-up (magnetic sensor)
The pick-up records the magnetic field of the transmitter each time it is passed and, if there is sufficient field strength, sends a square-wave signal to the evaluating instrument. Below a fixed
field-strength threshold (temperature switching point) no signal is sent.
4.2.1 Technical feature
Type designation
Output signal to EN 60947-5-6
Type MS threaded tube chromed M18 x 1 x 70mm, also M18 x 1 x 50mm can be selectable.
Type of fitting flush / not flush
Type of protection IP67
Operating temperature -25ºCto +70ºC


4.2.2 Connection
The connection between the pick-up and the evaluating instrument is established via a two-core
conductor. The max. length of conductor with a conductor cross-sectional area of 1.0 mm2 is 500 m.
The feed line must always be laid separately and not with others in multi-core conductors (risk of
coupling-in interfering voltages).