5. Operation and MENU description
5.1 Check the product specifications
Before starting to use this product, check the product specifications that can be found in this manual
or the basic information located on the back panel of the product.
The detailed product technical specifications can be found in Section 7. For a specific application,
the pressure rating must not be higher than the system pressure to be measured, and the flow range
should also be within the specified ones. In most cases, the use of a high full-scale ranged meter for
the very low flow rate measurement often results in erroneous data. The gas to be measured must
also be consistent with that specified by the product. Be particularly cautious about the supplied
voltage indicated in the specification. A higher voltage may lead to irrecoverable damage, and a
lower voltage will not power the product for any desired functions.
For the best performance of the product, it is advised that the gas to be measured must be clean and
free of particles or other foreign materials.
5.2 Check the leakage
Check gas leakage before any measurement. If it is needed, the pressurized nitrogen or air can be
used for the leakage check.
5.3 Power the meter and digital data connection
Although this product complies with the CE-required EMC regulations, it also requires the product to
be used according to the standard electrical device practice. For general-purpose usage, the meter
can be power by 4-AA batteries. Be sure to select the batteries with safety proof and within the
expiration date. Do not use batteries without a known manufacturer and expiration date. For models
with control valves or for extensive usage, it is recommended to have the meter powered with
external DC power or an AC-DC adapter. Make sure the supply voltage is within the range of the
specified ones in Section 7. Before connecting the product with the external power, make sure the
standard electrical device precautions such as EDS (electrostatic discharge) and DC voltage are
observed. Excessive electrostatic discharge may damage the product.
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