Thermal Limiter / Thermal Monitor

Item number: TB225

  • Can be used as a temperature limiter and monitor
  • Certified in accordance with DIN EN 14597
  • Pt100 inputs, dual thermocouple, input signals
  • 2 changeover relays
  • Configuration via backlit graphic display
  • 'White / Red' display colour change in the case of an alarm
  • Safe galvanic isolation between input / output / auxiliary voltage
  • Automatic recognition of the output signal
  • Wide-range mains adapter
  • Carrier rail mounting TS 35
  • Category: Limit Monitors


    418,88 €

    including 19% VAT.

    Exp. shipping time: ca. 2 weeks

    : 5 workdays

    pc.


    Description

    Thermal Limiter / Thermal Monitor

    • Can be used as a temperature limiter and monitor
    • Certified in accordance with DIN EN 14597
    • Pt100 inputs, dual thermocouple, input signals
    • 2 changeover relays
    • Configuration via backlit graphic display
    • 'White / Red' display colour change in the case of an alarm
    • Safe galvanic isolation between input / output / auxiliary voltage
    • Automatic recognition of the output signal
    • Wide-range mains adapter
    • Carrier rail mounting TS 35

    The safety temperature limiter TB225 is used for applications where thermal processes must be monitored and the system must be switched to a safe operating state in the case of a fault. The device has universal inputs for the connection of dual thermocouples,Pt100 sensors, and input signals (0/4..20mA or 0/2..10V). The safety function is provided by means of the main relay with configurable threshold. An additional relay with an independently adjustable threshold is provided for additional signalling. The TB225 also offers an analog output which can be freely defined within the measuring range of the temperature input. The resetting of the device in the operating mode as a temperature limiter can take place via the buttons on the front, the integrated graphic display, or using an external switch or external voltage. The TB225 has safe 3-way electrical isolation between input, output, and auxiliary voltage.

    The connected temperature signal is evaluated and monitored. If the permissible threshold is reached or an error occurs within the permissible temperature range, the TB225 switches off immediately. The additional relay output of the TB225 enables the function of a preliminary alarm with an independent threshold. The following operating modes are possible through configuration:

    Temperature limiter:
    Maximum or minimum monitoring with catch, manual resetting after fault elimination via the front keys or an external switch / voltage signal Operating methods in accordance with EN14597: 09/2012: Type 2B, 2H, 2V

    Temperature monitor:
    Maximum or minimum monitoring without catch, automatic resetting on return to the permissible range operating methods in accordance with EN 14597: 09/2012: Type 2B


    Technical data:

    Auxiliary Power
    Auxilary voltage: 18 - 230V AC/DC
    Power consumption: <5VA
    Rated voltage: 250V AC in accordance with EN 60730-1: 10/2012, between input/relay output/auxiliary voltage,
                          degree of conatmination 2, overvoltage categegory III; rated surge voltage: 4kV
    CE conformity: EN 14597: 02/2015; EN 61326: 07/2013

    Environmental conditions
    Operating temperature: -10 to +55°C
    Storage temperature: -20 to +60°C
    Relative air humidity: <95%, non-condensing

    Approvals: DIN EN 14597: 02/2015:  Temperature control devices and temperature limiters for heat-generating systems

    Inputs
    Pt100:
    -100.0 to +600.0°C
    Basic accuracy 0.2%, ±1 Digit
    Temperature coefficient: 0.01%/K

    Thermocouple: Type J: Fe-CuNi:  -100 to +800°C
                              Type K: NiCr-Ni:  -150 to +1200°C
                              Type N: NiCrSi:-NiSi:  -150 to +1200°C
                              Type S: Pt10RH-PT:  0 to +1600°C
                              Reference junction compensation integrated
    Basic accuracy: <0.3%, ±1 Digit
    Temperature coefficientt: 0.01%/K

    Analogue input: 0/2-10VDC, 0/4-20mA,
                            0/2-10V and 0-20mA not permitted for temperature limiting
    Basic accuracy: 0.2%, ±1 Digit
    Temperature coefficient: 0.01%/K

    Display:  graphic LCD with 32 x 90 pixels, with white/red background lighting

    Outputs
    Switching outputs: 2 x relay
    Changeover relay:  <250V AC,  <500VA,  <2A  (ohmic load)
                                 <30V DC, <60W, <2A  (ohmic load)
                                 Internal main relay secured with 2A fuse! Fuse is not interchangeable!
    Analogue output: 0/4-20mA, load  < = 500 Ohm
                               0/2-10VDC, load < = 500 Ohm
                               electrically isolated. Output switches automatically (load dependent)
    Basic accuracy: 0.2%
    Temperature coefficientt: 0.01%/K

    Housing: Polyamide (PA) 6,6, UL94V-0, TS35 in accordance with DIN EN 60715
    Weight: ca. 180g
    Connection: screw terminals 
                     0.14 to 2,5mm² with wire protection
                     0,14 to 2,5mm² (AWG 26 ... 14)
    Protection rating: IP20, BGV A3

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