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SCHEDULE
13
EU – Type Examination Certificate KIWA 19ATEX0038 X
14
15.1
Description of Product
The Position Transmitter Type 4749 is mounted on control valves and converts the lifting or
rotating movements of the valve drive into a 4-20 mA current signal.
The position transmitter enclosure is provided with a threaded cover and can be of aluminum or
stainless steel.
Type of protection
Ex ia IIC
Ex ia IIIC
Ex db IIC
Ex tb IIIC
The Position Transmitter enclosure provides a degree of protection of IP66 in accordance with
EN 60529.
Type designation
4749-abcde
a: Approvals
b: Options
c: Reserved
d: Field wiring entry
e: Enclosure material
15.2
Electrical Data
Type of protection db or tb:
Power supply: 12-28 Vdc, 4-20 mA.
Type of protection ia:
Supply and output circuit (terminals +31, -32):
in type of protection intrinsic safety Ex ia IIC, only for connection to a certified intrinsically safe
circuit, with the following maximum values:
Ui = 28 V; Ii = 115 mA; Pi = 1,0 W; Ci = 19,2 nF; Li = 0 mH
15-10
T-class
Ambient temperature range
T6
-40 °C to +55 °C
T5
-40 °C to +70 °C
T4
-40 °C to +80 °C
T85 °C
-40 °C to +55 °C
T6
-55 °C to +65 °C
T5
-55 °C to +80 °C
T4
-55 °C to +85 °C
T80 °C
-55 °C to +65 °C
180 (Intrinsically safe / Explosion proof ATEX)
0 (position transmitter 4 - 20 mA)
X (not safety relevant)
0 (M20x1,5)
1 (NPT 1/2")
0 (aluminium)
1 (stainless steel)
Issue No. 1
EB 4749 EN
Page 2 of 3
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