■
Do not feed gas at the explosion limit. There is a
risk of explosive accidents.
■
When using this product for hydrogen, be sure to
purge with inert gas such as nitrogen or argon
before use. Usage without purging with inert gas
could result in explosive accidents.
■
For products without oil-free processing in gas-
contacting parts, do not feed oxygen gas. Doing so
could result in fire. Even for products with oil-free
processing, do not use for oxygen gas if the product
has been used even once for any other gas.
■
Ensure that foreign substances do not flow into the product.
If foreign matter (dirt, water drops, or oil mist inside
the piping, etc.) enters the product, accuracy or
control properties may be adversely affected,
leading to failure in some cases.
If the entry of foreign matter is possible, install a
filter, air dryer, and oil mist filter on the primary side
(upstream side) of the product.
●
The mesh inside the product rectifies flow in the pipe.
Note that it does not filter out foreign matter.
●
As compressed air from the compressor contains drainage
(water, oil oxides, foreign matter, etc.), install a filter, air
dryer, and oil mist filter (micro alescer) on the primary side
(upstream side) of the product.
●
When using compressed air, use clean air compliant with
JIS B8392-1: 2012 (ISO 8573-1: 2010) [1.1.1 to 1.6.2].
[Recommended circuit]
●
When using a valve on the primary side of the product,
use only valves with oil-prohibited specifications. The
product could malfunction or fail if exposed to splattering
grease, oil, etc.
●
Use dry gas which does not contain corrosive elements
such as chlorine, sulfur or acids, and which is clean and
does not contain dust or oil mist.
●
Depending on fluid quality, retaining the fluid for long
periods could adversely affect performance. Do not seal
the fluid in the pipe for long periods of time.
■
When using liquefied gases such as propane gas,
always vaporize the gas. Failure may result if
liquefied gas enters the product.
■
When using this product to control the burner
air-fuel ratio, take design measures to prevent
backfire and to avoid the effect of backfire on the
product. Internal pressure increase in the piping or
fire due to burner backfire may lead to failure.
■
Check that the pressure inside the fluid supply line
is within the working differential pressure range
before using.
If the source pressure is low or the pressure at the
secondary side is high, the differential pressure
becomes insufficient and the fluid does not flow.
■
Due to the flow characteristics of the primary side
regulator, the pressure is unstable when the flow
rate flows, and FCM output may fluctuate.
DANGER
1. Working fluids
Design/selection
Product-specific cautions: Compact flow rate controller FCM Series
Flow rate controller
Safety Precautions
Be sure to read this section before use.
■
This product cannot be used as a billing meter.
Do not use this product for commercial transactions
as it is not compliant with the Measurement Act.
■
This product is only for use with the gases
indicated in the model No. Do not use fluids other
than the applicable fluids, as specifications such as
accuracy and control properties cannot be met. In
particular, note that if hydrogen gas or helium gas
flows into products in this series that are for use
with other gases, the sensor safety circuit will
activate and the product may not operate. (When
the safety circuit is activated, flow rate
measurement/control cannot be performed until the
power has been turned OFF.)
■
When mixing hydrogen gas or helium gas with a gas
other than hydrogen or helium, use caution regarding
gas reverse flow. If hydrogen gas or helium gas
flows into products in this series that are for use with
other gases, the sensor safety circuit will activate
and the product may not operate. (When the safety
circuit is activated, flow rate measurement/control
cannot be performed until the power has been turned
OFF.) Especially when cutting off the gas, provide
individual cutoff valves as in the reference drawing
below in order to prevent gas back-flow.
WARNING
FCM Series
(For other than hydrogen/helium)
Cutoff valve
Gas supply source
FCM Series
(For hydrogen/for helium)
Cutoff valve
Gas supply source
Oil mist filter
Regulator
Air dryer
Filter
FCM Series
Pneumatic
source
18
Summary of Contents for FCM-0001 AI
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