Relative humidity
≤ 75 % annual average; avoid condensation; max. relative
humidity
≤ 80 % in operation; pay attention to influence of
humidity on chart paper to DIN 16234
Electrical safety tested to DIN VDE 0411 Part 1 / IEC 348
Class of protection I
Measuring circuits; functional extra-low voltage with safe
isolation to VDE 0110 Part 410
Test voltage
1.5 kV power supply to case
4,4 kV measuring circuit to power supply
0.5 kV measuring circuits to case
0.5 kV measuring circuits to measuring circuits
Overvoltage category III
Degree of contamination 3
to DIN VDE 0110 Part 101
Electromagnetic compatibility
The safety requirements stated in the EMC directive 89/336/
EWG, May 1989 shall be fulfilled with respect to immunity to
electromagnetic interference to drafted EN 50082.2
Radio interference suppression
Suppression class N to VDE 0875 or EN 55014
Connection, case and mounting
Electrical connections
Type of protection IP 20
Tab connector A 6.3
× 0.8 or A 2.8 × 0.8 or
MTP 2.4
× 0.8 or as accessory
Screw terminal for 2
× 1.5 mm2 wire
Power supply
Type of protection IP 54
Screw terminals for 1.5 mm
2 wire
Case
Sheet metal for panel or mosaic panel field mounting
Colour RAL 7032, Protection IP 54,
Door made of polycarbonate
Operating orientation
vertical
± 45 ˚
Monting distance
horizontal or vertical 0 mm,
case door must be open also at 100
°
Weight
approx. 5.5 kg
Labelling facilities
On the measuring point designation plate in the door,
31 characters per measuring point
Parts supplied with the first unit
1 Operating manual
2 Fastening elements to DIN 43834
2 Roll or fanfold charts
1 Ink holder (print star)
Explosion protection
Manufacturer’s code
49/40-23 Ex
Certificate of conformity
PTB No. Ex-92.C.2082
Type of protection
EEx m (ib) e d IIB T4
Mounting
within the hazardous zone 1
Measuring circuits
(Terminals 11, 12, 13; 21, 22, 23; 31, 32, 33; 41,
42, 43; 51, 52, 53; 61, 62, 63; 801, 901)
in type of protection intrinsically safe EEx ib IIB or EEx ib IIC
1. Measuring circuits for current, voltage and resistance
with range box Arucomp 4900/EK-Ex
-Ex W21, -Ex W21KV, -Ex W22KV, -Ex W22K, -Ex W23 KV,
-Ex W23K, -Ex W24K, -Ex W24K2, -Ex W25K, -Ex W25K2,
-Ex W26K, -Ex W27K, -Ex W28, -Ex W28K
Max. values per measuring circuit:
U = 10 V
IK = 65 mA
P = 400 mW
The effective internal inductance is negligibly low.
The effective internal capacitanc is 12 nF.
Max. permitted values of the connected intrinsically safe
circuits:
1.1. Connection to passive intrinsically safe circuits
Group IIC
Group IIB
Max. external inductance La
5 mH
20 mH
Max. external inductance Ca.
4
µF30 µF
1.2 Connection to certified active intrinsically safe circuits
Max values per circuit
U = 25 V
P = 600 mW
The maximum internal inductanceLa and capacitance Ca
depending on the respective max. values of the connected
intrinsically safe circuit can be taken from tables 1,2 and 3 of
the certificate of conformity.
2. Measuring circuits for current
with range box Arucomp 4900/EK-Ex
-Ex W28, -Ex W27K, -Ex W28K with input resistance Re
≤ 7 Ω
Max. values per circuit
U = 0.5 V
IK = 65 mA
P = 8 mW
The effective internal inductance is negligibly low.
The effective internal capacitanc is 12 nF.
Max. permitted values of the connected intrinsically safe
circuits:
Max values per circuit
U = 20 V
I = 170 mA
The maximum internal inductance La and capacitance Ca
depending on the respective max. values of the connected
intrinsically safe circuit can be taken from tables 4 and 5 of
the certificate of conformity.
The six measuring circuits are electrically isolated. The
respective measuring circuit in operation and the circuit for
the external reference junction are electrically coupled.
Note:
The values mentioned above do not apply to a plug
connection. Those values can be taken from the annex
to the certificate of conformity.
}
Technical data
Multipoint Recorder Arucomp EK-Ex. A
Data Sheet
40-1.10 EN
01.97
Page 3 of 6
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