Temperature switch TSZ4H-RS 485 with display is designed for using as two-state controllers (on/off type control). This switch compares the temperature set-point with the actual temperature value and enable switching the galvanically separated (electrically insulated) contacts of a connected relay when the set temperature is reached. Supply voltage of the switches is 10 to 33 V DC or 9 to 24 V AC (by the type). Two temperature sensing elements can be connected to the switches. The display indicates present value of the measuring temperature during measure process. Setting of individual parameters is executed by two control buttons.
The switch can be used in 5 different modes:
- Mode no. 1: the switch operates as a single controller which switches the first relay by the set temperature interval and the second relay is switched at the exceeding set emergency temperature (only one sensing element is used)
- Mode no. 2: the switch operates as a single controller which switches each relay by the set temperature interval (only one sensing element is used)
- Mode no. 3: the switch operates as a double controller, it means that each relay is controlled by the temperature of one sensing element
- Mode no. 4: the switch operates as a differential controller which switches on the base of temperature difference of two sensing elements (analogous to mode no. 1)
- Mode no. 5: the switch operates as a differential controller which switches on the base of temperature difference of two sensing elements (analogous to mode no. 2)
The time delay of switching-off for the relay 1 within the limits 0–300 s can be set in each mode. Measurements and setting all parameters can be done by means of the industrial bus RS485 with the protocols ModBus RTU (standardly) With a simple converter RS485/RS232 the switch can be connected to the PC-serial port and so various settings can be made. For this purpose the software placed on the web site www.sensit.cz/download can be used. The switches are intended for assembly to the DIN slat. The temperature range of the switch applications depends on used temperature sensing element type (for example for the sensor in the TG8 case the range is -50 to 200 °C). Maximum operating temperature range of the switch is -50 to 250 °C.
The switches are intended for operating in a chemically non-aggressive environment.
DECLARATION, CERTIFICATION, CALIBRATION
- Manufacturer provides EU Declaration of Conformity.
- Calibration – The final metrological inspection – comparison with standards or working instruments – is carried out for all the products. Continuity of the standards and working measuring instruments is ensured within the meaning of the Section 5 of Act no.505/1990 on metrology. The manufacturer offers a possibility to supply the sensors calibrated in SENSIT s.r.o.’s laboratory (according to requirements of the EN ISO/IEC 17025 standard, as amended) or in an Accredited laboratory.
