User information – Delta Controls DPT-2000 User Manual

Page 10

8 IOM-DPT-A: FEB 2014

Appendix Exi

4. User information.

Together with the ordered transmitters, the user will receive:

a) Product Certificate,
b) Declaration of conformity
c) Copy of certificate

– on request

„User’s Manual numbered: „DTR.DPT.ALW.03” with Appendix Exi..

User can find them at

www.delta-controls.com

5. Permitted input parameters (based on data from the FTZÚ 14 ATEX

certificate, and certification documentation).

The transmitters should be powered via the associated power feeding and measurement devices
provided with the relevant intrinsic-safe certificates. The parameters of their outputs to the danger zone
should not exceed the limit power supply parameters for the below specified transmitters.

Temperature classes T4, T5, or T6 depend on the input power and maximum ambient temperature

– see p.

5.1, 5.2, 5.3.The ambient temperature range is reduced to Ta = -20ºC to +60ºC if the devices is installed as
group I M1 equipment.
External connections are made via integral terminals and cable glands which must be of certified type if they
are mounted on the version f or combustible dust hazard application.

5.1. -

for power supply with a “linear“ characteristic

Ui = 30V Ii = 0,1A Pi = 0,75W Ta ≤ 80ºC and T4, Ta





C and T5, Pi = 0,45W Ta ≤ 40ºC and T6

Power supply with a “linear” characteristic may be e.g. a typical barrier with parameters

Uo = 28V Io = 0.093A Rw = 300



Zasada zasilania o charakterystyce liniowej (Radwanice)

Fig.1. Power supply from a source with “linear” characteristic

5.2.

–

for p

ower supply with a “trapezial” characteristic

Ui = 24V Ii = 50mA Pi = 0,6W Ta



80°C and T5 and Pi = 0,45W Ta



40°C and T6

Example of power supply from a source with “trapezial” characteristic (see Fig. 2).

Fig. 2. Power supply from a source with “trapezial” characteristic

If Uo < then parameters Uq, Io, Po are interrelated as follows:

= , Rw = , P

= for U

≤ 1/2U

5.3. -

for power supply with “rectangular” characteristic

Ui = 24V Ii = 25mA Pi = 0,6W Ta





C and T5

The supply of power from a source with a “rectangular” characteristic means that the voltage of the Ex power
supply remains constant until current limitation activates.
The protection level of power supplies with a “rectangular” characteristic is normally “ib”.
The transmitter powered from such a supply is also a Ex device with protection level “ib”.
Example of practical provision of power supply.

–

use a stabilized power supply with Uo=24V with protection level „ib” and current limited to Io=25mA.

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