NGS
page 6 NGS 01/06
10. Maintenance
The measuring unit requires no regular maintenance. Sometimes cleaning of
adhered materials is necessary. Repairs should only be carried out by the
manufacturer.
11. Technical Information
NGS-_1, horizontal mounting
Nominal pressure: 25 bar
Installation position: from side
Differential: fixed, see diagram
NGS-_3, horizontal mounting
Nominal pressure: 16 bar
Installation position: from above
Differential: adjustable
General
Medium temperature: -20 °C to +250 °C*
Ambient temperature: -20 °C to +80 °C*
Min. medium density: > 0.7 kg/dm³
Wetted parts: stainless steel 1.4571
Switch housing: aluminium casting, colour coated
Flat gasket: Klingerit
Process connection: square flange, DIN Flange, 2“ BSP or NPT
Switching element: 1 microswitch with 2 switch contacts,
changeover function
Switch capacity: 250 VAC/10 A
220 VDC/0.6 A
for ex operation: 250 VAC/2.5 A
220 VDC/0.3 A
Electrical connection: M20x1.5
Protection: Standard version:
NGS-2...: IP 65
Submersible version:
NGS-4...: IP 68 (max. 20 m WC)
ATEX-approval: II 1/2 G EEx dme IIC T6...T2
Other approvals: GL-approval
Weight: approx. 2.5 kg
*Temperature designation ATEX-option
Class T6 T5 T4 T3 T2
Process temperature 80 °C 95 °C 130 °C 200 °C 250 °C
Ambient temperature -20...+60 °C -20...+70 °C -20...+80 °C -20...+80 °C -20...+80 °C
