GESTRA NRG 111-11, Руководство по установке

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Explanatory Notes
Scope of supply
NRG 16-11
1 Level electrode NRG 16-11, PN 40
1 Joint ring 27 x 32, form D, DIN 7603, 1.4301, bright-annealed
1 Disk with set screw (measuring surface extension) – optional
1 Retaining ring – optional
1 Installation manual
NRG 17-11
1 Level electrode NRG 17-11, PN 63
1 Joint ring 27 x 32, form D, DIN 7603, 1.4301, bright-annealed
1 Disk with set screw (measuring surface extension) – optional
1 Retaining ring – optional
1 Installation manual
NRG 19-11
1 Level electrode NRG 19-11, PN 160
1 Joint ring 27 x 32, form D, DIN 7603, 1.4301, bright-annealed
1 Disk with set screw (measuring surface extension) – optional
1 Retaining ring – optional
1 Installation manual
NRG 111-11
1 Level electrode NRG 111-11, PN 320
1 Gasket 33 x 39 DIN 7603-1.4301
1 Sealing plug for M 20 connection
1 Surface extension disk with grub screw
1 Retaining ring
1 Installation manual
Description NRG 16-11, NRG 17-11, NRG 19-11, NRG 111-11
The level electrode NRG 1...-11 detects the min. liquid level (low level alarm) in a steam boiler.
The operation of the electrode is based on the conductivity measuring principle using the electrical
conductivity of water for signaling one liquid level:
n
Low level alarm
The NRG 1...-11 is designed for use in conjunction with level switch NRS 1-7 as a self-monitoring low
level limiter with periodic self-checking (SMART) feature.
Application in steam and pressurised hot-water plants in accordance with TRD 604, sheet 1 and
sheet 2 (24 h/72 h operation) as well as DIN EN 12952 and DIN EN 12953.
The electrical equipment meets the requirements of the Regulations on Protection Circuits EN 50156-1.