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dST
dST Explosion-proof analogue telephone
This product has the following explosion protection:
II 2 G Ex eb mb [ib] IIC T6/T5 Gb
II 2 D tb [ib] IIIC T80°C/T100 °C Db
-25 °C ≤ Ta ≤ +40 °C/+60 °C
Zone 1, 2, 21, 22
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dST Explosion-proof analogue telephone

  • Certified for gas and dust hazardous areas – zone 1, 2, 21, 22
  • Degree of protection IP 66 & impact resistance IK09
  • Very robust weather-proof housing with steel-armoured handset cord to withstand high tensile forces
  • For demanding industrial, onshore and offshore applications
  • V4A steel keypad, designed for use with gloves
  • Easily readable alphanumerical display
  • Freely programmable, housing colours black and red
  • Version without keypad/display available as emergency telephone

Especially suitable for

Technical data

Transportation/storage temperature-25°C/+70°C
Dialling methodPD DTMF operation can be selected from menu
DTMF operation as per CCITT recommendation Q.23
PD operation with pulse/pause ratio of 1.5:1 or 2:1, which can be selected via menu navigation
Housingglass-fibre-reinforced polyester red or black
Type of mountingvertical
Cable entry1x M20 x 1.5, 2x blind plugs M20 x 1.5
Connection technologyup to 4 mm² rigid, up to 2.5 mm² flexible
Operating temperature-25°C bis +60°C (T5)
-25°C bis +40°C (T6)
Degree of protectionIP66
Impact resistanceIK09
ApprovalDMT 03 ATEX E034
Technologyanalogue
KeypadMetal keypad with ice protection 21 keys with ABC lettering for name entries
Noise suppression> 3 dB thanks to integrated mouthpiece horn
Supply voltage24 V DC-66 V DC
Supply current0,015 A DC-0,10 A DC
Ringing alternating current24 V AC–90 V AC (at 21–54 Hz ringing frequency)
30 V AC–90 V AC (at 16.6–54 Hz ringing frequency)
Tone ringing impedance> 6.0 KΩ at 25 Hz and 24–90 V AC
> 4.0 KΩ at 50 Hz and 24–90 V AC
Enquiry keyFlash function can be adjusted from 40 ms–399 ms
W conductorOption to connect external call signalling sounder
Weight5,5 kg
Tone ringing volume90 dB At 1 m
Display2-line alphanumerical display with pictograms, visible area 78 x 26 mm
MouthpieceElectret microphone
Receiverdynamic receiver with leakage field spool for inductively coupling hearing aids
Stabiliser bracketintegrated, adjustable stabiliser protection
Handset cordsteel-reinforced armoured cord made of V4A

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