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14063434.01 04/2015 EN/DE
WIKA operating instructions transmitter, models GDT-20, GDHT-20
EN
2. Safety
Repair work and maintenance:
■
IEC 61634 (Use and handling of SF6 gas in high-voltage switchgear and control gear)
■
CIGRE 1991 (Handling of the SF6 gas)
■
CIGRE report 276, 2005 (Practical SF6 gas handling instructions)
■
CIGRE report 163, 2000 (Guide for SF6 gas mixtures)
SF
6
Detailed information is given in IEC 60376 and IEC 61634.
2.4 Labelling, safety marks
Product label GDT-20
Product label GDHT-20
Explanation of symbols
Before mounting and commissioning the instrument, ensure you read the
operating instructions!
CE, Communauté Européenne
Instruments bearing this mark comply with the relevant European directives.
GDT-20
P#
S#
Pressure: 0 ... 16 bar abs
Temp.: -40 °C ... +80 °C
Density: 0 ... 60 g/l
MODBUS RTU
17 ... 30 VDC, Pmax. = 3 W
Made in Germany www.wika.com
Pin Description
1 C RS-485 GND
2 U
B
17-30 VDC
3 GND Ground
4 A RS-485
5 B RS-485
13C
P# article number
S# serial number
Measuring range pressure
Measuring range temperature
Measuring range density
Communication protocol
Power supply
Pin assignment
GDHT-20
P#
S#
Pressure: 0 ... 16 bar abs
Temp.: -40 °C ... +80 °C
Density: 0 ... 60 g/l
Dew point: -60 °C ... +20 °C
MODBUS RTU
17 ... 30 VDC, Pmax. = 3 W
Made in Germany www.wika.com
Pin Description
1 C RS-485 GND
2 U
B
17-30 VDC
3 GND Ground
4 A RS-485
5 B RS-485
13C
P# article number
S# serial number
Measuring range pressure
Measuring range temperature
Measuring range density
Measuring range dew point
Communication protocol
Power supply
Pin assignment