Rail-mounted temperature transmitter with universal input, galvanic isolation, HART® and wireless communication

  • Input: RTD, TC, mV, Ω
  • Output: 2-wire, 4…20 mA/HART®7
  • Programmable via PC, HART® handheld or the OPTITEMP Connect mobile app (using Bluetooth® or NFC)
  • Accuracy: ±0.08%

OPTITEMP TT 53 R – Rail-mounted temperature transmitter

OPTITEMP TT 53 R – Rail-mounted temperature transmitter

The OPTITEMP TT 53 R is a universal, programmable, 2-wire rail-mounted temperature transmitter. The galvanically isolated transmitter works with RTD elements, thermocouple (TC) elements or other inputs (mV and Ω). It supports wireless Near Field Communication (NFC) as well as Bluetooth® communication. The OPTITEMP TT 53 R transmitter can thus be remotely configured and monitored using mobile devices.

Featuring HART®7 communication, the transmitter also offers extended diagnostic information (for example device error, sensor and wiring conditions). In addition, it is able to measure the actual supply voltage as well as the ambient temperature while making them available via HART®. The maximum values are stored internally. The robust design of the OPTITEMP TT 53 R makes the transmitter highly reliable even under harsh environmental conditions. It is available for use in hazardous areas. The temperature transmitter is designed to be mounted on a DIN rail. A dedicated head-mounted version is available with the OPTITEMP TT 53 C.

Product highlights

  • Completely universal digital device
  • Fast step response time and high accuracy over transmitter lifetime
  • Wireless communication:
    • Via Near Field Communication (NFC): Quick configuration of the transmitter in combination with the user-friendly OPTITEMP Connect mobile app; no power supply and wiring required
    • Via Bluetooth®: Quick configuration and monitoring of the transmitter in combination with the OPTITEMP TT-CON BT configuration kit and the OPTITEMP Connect mobile app
  • Configuration also possible via PC/software (ConSoft™) without external power supply
  • Enhanced diagnostics (NAMUR NE 107), incl. sensor break monitoring, error correction etc.
  • High degree of functionality and features (incl. runtime counter, output simulation, ambient temperature log etc.)
  • Rugged design: vibration-resistant up to 10 g
  • Designed for installation on a rail (in accordance with DIN EN 60715)

Product details

Product categoryRail-mounted temperature transmitter
Alternative product categoriesDIN-rail transmitter, Top-hat rail transmitter

Technical data

Product typeTemperature transmitter
Transmitter mountingRail-mounted
Transmitter channels MAX1
Galvanic isolationYes
Galvanic isolation (VAC)1500 VAC
Transmitter inputPotentiometer (Ω), Resistance (RTD), Thermocouple (TC), Voltage (mV)
RTD inputCu10, Ni100, Ni1000, Ni120, Ni50, Pt100, Pt1000, Pt50
RTD input / wiring2-wire, 3-wire, 4-wire
TC InputB, C, D, E, J, K, N, R, S, T
Potentiometer input (Ω)100…10000 Ω
Voltage input (mV)-10…+1000 mV
Transmitter programmableYes
Configuration methodBluetooth®, HART handheld, NFC (Near Field Communication), PC/ConSoft software
Power supply (VDC)8.5…36 VDC
8.5…30 VDC (Ex)
Ambient temperature–40...+85°C/
Diagnostic functionsSensor break detection, Sensor short circuit detection


Certificates/Approvals ExATEX, IECEx
NAMUR complianceNE 107, NE 43, NE 53, NE 89


Digital outputsHART®
Analogue outputs20…4 mA, 4…20 mA

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