Installation; Operating Conditions; Permissible Types Of Gases; Permissible Temperature Ranges - RMG TERZ 94 Operating Instructions Manual

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Installation

Operating conditions

Permissible types of gases

The standard design of the TERZ 94 or TERZ 94-S can be used for all non-corrosive gases, such as
Natural gas
Town gas
Methane
Ethane
Propane
Butane
Special designs (PTFE lining, special lubrication, special material, etc.) can be used for corrosive
and humid gases, such as
Ethylene
Biogas
Acid gas

Permissible temperature ranges

For the standard design, the following fluid temperature and ambient temperature ranges are
permitted:
Fluid temperature range:
Ambient temperature range: -20°C to +60°C resp. +40°C

Pressure loss

The pressure loss is calculated using the following formula:
∆ p
where
∆p
ZP
ρ
QM
DN
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Manual TERZ 94 · EN09a · 2017-11
-10°C to +50°C
Q
= Z ⋅ ⋅ ρ 2
M
DN
P
4
is the pressure loss
is the pressure loss coefficient
is the density
is the flow rate at measurement conditions [m3/h]
is the nominal diameter of the meter
Air
Argon
Helium
Carbon dioxide (dry)
Nitrogen
Hydrogen
Digester gas
Sulphur dioxide
etc.
[mbar]
[kg/m3]
[mm]
INSTALLATION
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