Post on 05-Dec-2015
description
332 Division II
Pressure gauges Bourdon tube
SF6 gas density monitors are designed to monitor the density of sulphur hexafluoride (SF 6) at insulated high voltage switchgears (GIS), converters, gas-insulated transmission lines (GIL) and transformers.
SF6 gas density monitors excel with outstanding reliability. The application-specific process connec-tion is fully factory-welded to the measuring instrument. This means that a second, potentially leaky screw connection at the sealing point is not required. Made to specific customer specifications.
The integrated bimetal compensation allows for maximum accuracy and thus reliability of SF6 gas insulated switchgears.
Application
Description
TypeD 7
Nominal size100
Accuracy± 1.5 % of full scale value at 20 °C ± 2.5 % of full scale value at -20/+60 °C (compensated range)
Ranges-1/+5 bar -1/+9 bar Others on request
Application areaFull scale value
Contact typesMagnetic spring contact (MK) Electronic contact (EK) Inductive contact (IK)
Operating temperature rangeAmbient: Tmin = -40 °C Tmax = +65 °CMedium: Tmax = +100 °CCompensated: -20/+60 °C
Degree of protectionIP 65 (EN 60529) with housing vent IP 54
Technical specifications
Standard version ConnectionStainless steel 316 Ti/316 L or lower backG½B – spanner size SW 22 (EN 837-1/7.3)
Electrical connectionJunction box
Measuring elementBourdon tube, stainless steel 316 /316 L
MovementStainless steel
DialAluminium, white
PointerAluminium, black
HousingStainless steel 304 with pressure relief port
Crimped bezelStainless steel 304
WindowLaminated safety glass
Filling liquidSilicone oil
Options ■■ Without electrical contacts■■ Special scales
■■ Other process connections (e. g. DILO DN 8)■■ Housing nitrogen filled
SF6 gas density monitor
iPrices on request.
■■ Housing completely tight due to welding and crimping■■ Bimetal-compensated■■ Robust and reliable ■■ With or without electrical contacts■■ With application-specific process connection■■ DNV and Gosstandart certified
9
333Division II
Bottom connection, G½B – spanner size SW 22 Connection DILO DN8
Bottom connection, G½B – spanner size SW 22 Connection DILO -DN 8
SF6 gas density monitor Type D 7 – NG 100
Housing types and dimensions (mm)
Pressure gaugesBourdon tube
90 ±1
Ø 1
00.
5
16
M 20x1.5 2x17
22.6
Ø20
Ap
pro
x. 7
2
9