Technical Specifications - Datcon DT920 User Manual

Intrinsically safe tachometer
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7. Technical specifications

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Intrinsical safety class:
Power-supply voltage input (Us[23]; 0V[22])
Supply voltage:
Current consumption:
Connection to intrinsically safe circuits:
Ui ≤ 22,4 V, Ii ≤ 91 mA, Pi ≤ 2,1 W, Ci ≈ 0 F, Li ≤ 726 µH
Recommended power supply unit: Datcon DT2500 18 070 (Only EEx ib IIC)
NAMUR input DIN19234(NAMUR+[20]; NAMUR-[19])
Working resistance:
Low level:
High level:
Breaking signal:
Short-circuit signal:
Frequency range:
Connection to intrinsically safe circuits:
Uo ≤ 8,61 V, Io ≤ 8,72 mA, Po ≤ 18,75 mW, Co ≤ 5 µF, Lo ≤ 100mH
Recommended sensors: TURCK Ni-G12-Y1,
Analogue output (AOUT+[18]; AOUT-[17])
Loading resistance:
Accuracy:
Connection to intrinsically safe circuits:
Uo ≤ 8,61 V, Io ≤ 49,7 mA, Po ≤ 107 mW, Co ≤ 5 µF, Lo ≤ 10 mH
Recommended isolating device: Datcon DT1300 device family
Digital contact output (DOUTx+[6,8,10,12]; DOUTx-[5,7,9,11])
Galvanically isolated switching transistor.
Connection to intrinsically safe circuits:
Ui ≤ 30 V, Ii ≤ 35 mA, Pi ≤ 200 mW, Ci ≈ 0 F, Li ≈ 0 H
Uo ≤ 5 V, Io ≤ 1,35 mA, Po ≤ 1,6 mW
Recommended isolating device:
The device can be installed to Zone 1, or to areas of lower class.
Display:
Maximum displayed value:
Operating temperature:
Storing temperature:
Mechanical design:
Mechanical dimensions:
Applied standards:
BKI licence number:
Protection:
10
II 2 G EEx ia IIC T4 -20 °C ≤ Ta ≤ +60 °C
15–22,4 V
1 kΩ
0,5–1,2 mA
2,1–6,5 mA
0,5 mA under
6,5 mA above
0.3 Hz – 5 kHz
0–120 Ω
0,1 %
Datcon DT136x, DT137x, DT138x device family
4 digit LCD; character height 25.4 mm
9999 rotation/minute
-20–+60 °C
-20–+70 °C
Plastic box with screw-type fastening and with stuffing boxes
Panel instrument:
167 x 87 x 95 mm (width x height x depth)
Wall mounted instrument:
167 x 87 x 71 mm (width x height x depth)
MSZ EN 50014:2001 (Ex)
MSZ EN 50020:2003 (Ex)
MSZ EN 61326:2000 (EMC)
DIN19234 (NAMUR)
04 ATEX 132 X
In accordance with IP 65, MSZ EN 60529
≤ 70 mA

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