DT1362 Intrinsically Safe NAMUR / CONTACT Isolator

Product features

  • NAMUR / contact inputs
  • Relay contact / transistor outputs
  • 2 channel version
  • Line fault detection
  • Switch selectable mode of operation
  • 3 kHz transmission frequency (transistor output)
  • 19-29 VDC supply voltage
  • TS-35 rail mounting, 22.5 mm width devices

Type designation

DT13xx intrinsically safe namur contact isolator type designation

Product description

The DT1362 Intrinsically Safe NAMUR / Contact Isolators enable a safe area load to be controlled by a proximity detector or switch located in a potentially explosive area of zone 0 or zone 1. The units galvanically isolate the input, the output and the power supply. The safe output may be relay contact or transistor. In the case of a transistor output the maximum signal transmission frequency is 3 kHz.
The device is made in 2-channel version. In all units a built-in phase-reverse control switch allows an alarm condition (output open) to be signalled for either state of the sensor. A line-fault detection opens the output in the event of short or open-circuit lines: intended for use primerily with proximity detectors. It can also be used with switches made to resemble them electrically by adding two resistors, or disabling by a switch if not required.
A version with an input current < 0.5 mA is also available for isolation of the output contact of gas-consumption meters.
The supply voltage range is 19-29 VDC, thus the isolators are insensitive to the supply voltage change.

Technical specifications

Safety data:
The connection terminals of the supply voltages are isolated from each other, the isolation is in compliance with the standard EN 61010-1, taking into consideration the following:
Pollution level:2
Measurement category:II
Intrinsical safety data:
Certification:BKI 14 ATEX 0012
Protection marking:II (1) G [Ex ia Ga] IIC/IIB (-20 °C < Ta < +50 °C)
II (1) D [Ex ia Da] IIIC (-20 °C < Ta < +50 °C)
Safety data:
Uo [V]Io [mA]Po [mW]Co [uF]Lo [mH]Co [uF]Lo [mH]
Um:250 Veff
Input parameters:
In compliance with the standard EN 60947-5-6 (NAMUR)
No load voltage:8,2 V
Short circuit current:8,2 mA
Input resistance:1000 ohm
Low-current input version, upon request:
No load voltage:8,2 V
Short circuit current:0,5 mA (max.)
Input resistance:18 kohm
Output parameters:
Contacts:SPST or SPDT contact, see the type designation
Contact rating:250 VAC, 5 AAC, 500 VA vagy 30 VDC, 5 ADC
Galvanic isolation:
Operating isolation voltage:250 Veff (between the input, the output, and the supply voltage
Test voltage:2500 VDC
Power supply:
Supply voltage:19-35 VDC
Consumption:see the type designation
Ambient conditions:
Operating temperature range:-20 - +50 °C
Relative humidity:90% (max., non-condensing)
Place of installation:safe area, cabinet
Installation:vertical position
Electromagnetic compatibility (EMC)
accordance with the standard EN 61326
Immunity:industrial area
Noise emission:Group 1, Class B
General data:
Housing:terminal assembly box, rail mounting on TS-35 rail,
material: polyamide PA6.6
Connection:plug-in screw terminal
Connection cable:0,25-1,5 mm2 (max.)
Dimensions:22.5 × 99 × 115 mm (width × height × depth)
Weight:0.1-0.2 kg (depending on the type)
Protection:IP 20
Detailed information see in operating instructions. The Manufacturer maintains the right to change the technical data!


Leaflet of productOperating InstructionATEX certificate

Application example

DT1362 intrinsically safe namur contact isolator application example

Type selection and ordering

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