IsoTrans 36/37

Loop-Powered Isolator for Standard Signals


  • Galvanic isolation between input and output signal
  • Protection against measuring errors caused by grounding problems and parasitic interference voltages
  • No power supply required: cost saving due to lower wiring effort
  • No mains interference
  • Very low residual ripple: no interference of the connected measuring or control system
  • Explosion protection according to ATEX
  • High transmission accuracy, excellent pulse formation, exact transmission of the measured values
  • Very low common-mode interference: protection against incorrect measurements or failures caused by interference
  • Maximum reliability: no repair or downtime costs
  • 10 kV test voltage (optional)
  • Protective separation according to EN 61140: protection of maintenance staff and subsequent devices against excessively high voltages
  • SMART transmission: bi-directional point-to-point transmission of digital data according to HART® specification
  • 5-year warranty

Knick loop-powered isolators for 0 … 20 mA signal transmission. These modules are available as hazardous-area input and hazardous-area output isolators. Due to their patented design (German patent 3526997), they are considered to be the most reliable solution for isolating standard signals without an external power supply. The IsoTrans 36 and 37 isolators are not only suitable as highly reliable isolators for normal applications, they also meet the most stringent requirements that can be set for potential isolation. There is no need for power supply wiring. HART® is a registered trademark of the HART Communication Foundation.




Catalog Excerpts

Catalog Excerpt - IsoTrans 36/37

Catalog Excerpt (en)

799 |  IsoTrans 36/37
Product Description | Specifications | Product Range
PDF (file size: 0.89 MB)


Manual - IsoTrans 36/37

Manual (en)

805 |  IsoTrans 36
PDF (file size: 6.79 MB)
Manual - IsoTrans 36/37

Manual (en)

14277 |  IsoTrans 37
PDF (file size: 0.56 MB)

Certificates / Approvals

EU Declaration of Conformity - IsoTrans 36/37

EU Declaration of Conformity (en)

13688 |  WG 25 A7, Opt. ... & IsoTrans 37 A7, Opt. ...
Document No. EU180611A | 2018-06-11
PDF (file size: 1.59 MB)
EC-Type-Examination Certificate - IsoTrans 36/37

EC-Type-Examination Certificate (en)

11557 |  IsoTrans 36 A7/1 Opt. ...
PTB 02 ATEX 2134 | 2002-09-25
PDF (file size: 0.25 MB)
EC-Type-Examination Certificate - IsoTrans 36/37

EC-Type-Examination Certificate (en)

11848 |  IsoTrans 37 A7, WG 25 A7
PTB 02 ATEX 2063 | 2018-04-24
PDF (file size: 3.59 MB)