Sentry GS Gas Flow Monitor
As a protection against tampering by unauthorised persons, the GS type K is used for all installation positions.
The SENTRY GS gas flow monitors are selected by calculating the sum of the nominal loads of all gas appliances.
The DVGW-TRGI 2008 and the DVFG-TRF 2012 stipulate the use of gas flow monitors (GS) according to VP 305-1, edition 12/2007.
A free dimensioning programme can be requested at www.mertikmaxitrol.com.
Sentry GS gas flow monitors are certified according to VP 305-1, edition 12/2007,
(DVGW-Reg. No.: DG-4663BO0118) and the Pressure Equipment Directive (CE0085).
DVGW tested
TECHNICAL DATA
- available in two different installation configurations:
code letter Z – can be used for horizontal and upward installation position.
code letter D – can be used for installation downwards
- patented damping system
- automatic shut-off of the gas line when the closing flow rate is reached
- operating pressure range 15-100 mbar
- pressure loss ≤ 0.5 mbar
- overflow rate 2-30 l/h air
- for natural gas and gaseous liquid gas according to DVGW worksheet G 260
Product types Gas flow monitor (GS) for horizontal or upward installation
| Description | Inlet | Outlet | Nominal size | Order Number |
| GS1.6-1/2a.i. | Rp 1/2″ | R 1/2″ | DN 15 | 1 00 065 16 012 1 |
| GS1.6-3/4a.i. | Rp 3/4″ | R 3/4″ | DN 20 | 1 00 065 16 034 1 |
| GS2.5-1/2a.i. | Rp 1/2″ | R 1/2″ | DN 15 | 1 00 065 25 012 1 |
| GS2.5-3/4a.i. | Rp 3/4″ | R 3/4″ | DN 20 | 1 00 065 25 034 1 |
| GS4.0-3/4a.i. | Rp 3/4″ | R 3/4″ | DN 20 | 1 00 065 40 034 1 |
| GS6.0-1a.i. | Rp 1″ | R 1″ | DN 25 | 1 00 065 60 044 1 |
| GS10-1 1/4a.i. | Rp 1 1/4″ | R 1 1/4″ | DN 32 | 1 00 065 10 114 1 |
Product types Retrofit kits (NRS-GS) for horizontal or upward installation
| Description | Inlet | Outlet | Nominal size | Order number |
| NRS-GS1.6-3/4ak x 3/4 ÜWM | ÜWM | G 3/4″ | DN 15 | 1 00 065 16 100 9 |
| NRS-GS2.5-3/4ak x 3/4 ÜWM | ÜWM | G 3/4″ | DN 20 | 1 00 065 25 100 7 |
| NRS-GS2.5-3/4ak x 3/4 ÜWM | ÜWM | G 3/4″ | DN 20 | 1 00 065 25 100 9 |
| NRS-GS4.0-3/4ak x 3/4 ÜWM | ÜWM | G 3/4″ | DN 20 | 1 00 065 40 100 9 |
| NRS-GS6.0-3/4ak x 3/4 ÜWM | ÜWM | G 3/4″ | DN 25 | 1 00 065 60 100 9 |
| NRS-GS10-3/4ak x 3/4 ÜWM | ÜWM | G 3/4″ | DN 32 | 1 00 065 10 100 9 |
Product types Gas flow monitor (GS) for downward installation
| Description | Inlet | Outlet | Nominal size | Order Number |
| GS2.5-3/4a.i.-down | Rp 3/4″ | R 3/4″ | DN 20 | 1 00 065 25 034 2 |
| GS4.0-3/4a.i.-down | Rp 3/4″ | R 3/4″ | DN 20 | 1 00 065 40 034 2 |
| GS6.0-1a x 1i-down | Rp 1″ | R 1″ | DN 25 | 1 00 065 60 044 2 |
Product types Retrofit kits (NRS-GS) for downward installation
| Description | Inlet | Outlet | Nominal size | Order Number |
| NRS-GS2.5-3/4ak x 3/4 ÜWM-down | ÜWM | G 3/4″ | DN 20 | 1 00 065 25 100 8 |
| NRS-GS4.0-3/4ak x 3/4 ÜWM-down | ÜWM | G 3/4″ | DN 20 | 1 00 065 40 100 8 |
| NRS-GS6.0-3/4ak x 3/4 ÜWM-down | ÜWM | G 3/4″ | DN 25 | 1 00 065 60 100 8 |
All MGT house connection stations can be supplied with GS.Please add a 16, 25 or 40 to the corresponding item no. and consider the surcharge according to the price list.