ITRON G10 Betriebsanleitung

Instruction Manual
for Diaphragm Gas Meters G10 to G100
Keep this manual easily accessible for all users.
Please respect all national rules for installation,
operation and service of gas meters.
1. Important safety instructions:

The diaphragm gas meter G10 to G100 is designed to
measure gases of the 1st, 2nd and 3rd gas family as specified in EN437 as well as various
filtered and non-corrosive gases.
If aggressive gases are to be measured, please contact Itron for specific advice or to
obtain a special version of the meter.

If there is a risk of internal or external corrosion, inspect the device regularly. If the
device is clearly affected by corrosion, put it out of use.

Before installation, the meter must be checked for possible damages during transport.
Any damage must be reported immediately to the carrier. Never install a damaged
meter.

The operating conditions indicated on the nameplate, especially maximum admissible
operation pressure and flow rate have to be respected; eventually provide appropriate
security equipment.

The device is not designed to withstand earthquakes and floods.

Repairs of the device must be performed by skilled staff or properly instructed personnel
only. Repairs must be followed by a leakage test with 1.1 x PS. The guarantee only covers
repairs done by Itron.

The maximum tightening torque of the pressure tapping point is 4 Nm, must not exceed
1 Nm for the thermowell (both connections available on request)

After connecting a pressure sensor, check the tightness of the connection.

Relieve internal pressure completely before removing the device. Ensure proper
ventilation because of possible escapes of residual gas. Cap the inlet/outlet connections.

Only screwed casing version: The inner volume (V) of the meter in litre is:
ACE10/16: V = 21,7L (not PED-relevant); G25; V = 36 L (PED); G40; V = 90 L
2. Electrical accessories:
Remarks about using the meter in potentially hazardous areas (ATEX):

Tools with Ex-approval must be used for assembly, removal or repair in a hazardous area.

The meter must not be exposed to flames, ionising radiation or ultrasound.

The meter must be taken in account in the lightning evaluation of the complete
installation.

Pulse transmitters must be connected to intrinsic safe circuits, in accordance with EN
60079-11

Further identifications or ATEX-Certifications are not necessary.
2.1. Low frequency transmitter (standard totaliser)

As sensors, Reed switches (normally open) are used. These „passive elements" as well as
the used cables and plug connections are simple electrical equipment in conformance
with 60079-11, paragraph 5.7; they also conform to EN 60079-0. Further technical
information are written in the brochure and data sheet.
2.2. Cyble module (Cyble totaliser optional)

As an option, a communication module can be installed onto the totaliser equipped with
a Cyble target.

Further technical information and the installation procedure of the module are written in
the brochure and instruction manual of the respective Cyble modules.
3. Transport and Storage:

Always keep the meter vertical during transport and installation. Make sure it is well fixed
on the lorry and handled without dropping. Please note that the packing material of the
meters shall be recycled.

Handle the meters with care during transport. Shock must be avoided. On receipt,
carefully examine the shipping container and the meter itself for any external damage.
Any visible damage should be reported to the carrier.

Do not remove the protection caps from the meter while in store.

Do not remove any sealing from the meter; you will invalidate the guarantee of the
product and maybe the fiscal approval of the meter.

Storage temperature range: -40° to +70°C.
4. Installation:

The location of the meter must be easily accessible and dry. Avoid direct contact of the
meter casing with soil or concrete walls.

The device should be installed without be influenced by other components of the
installation.

The flow direction is indicated by an arrow on the body.

The piping upstream of the meter should be blown clean with dry air. Dirt and other
foreign materials can cause serious damage of the measuring unit or other parts like
gaskets.

Before installing the meter in the piping, inspect the threads of the inlet and outlet for
dirt and damage. Foreign material on the threads can cause leakage or damage to meter
connections.

For flange connections use screws whose shaft protrudes from the nut by at least one
thread pitch.

Check the alignment, the parallelism, the distance of flanges or studs. Do not use the
meter to adjust badly-fitted piping.