Application according to designation, general safety instructions
42/14-36 EN
Thermal Mass Flowmeter FMT400-VTS, FMT400-VTCS (Sensyflow VT-S/VT-CS)
5
2 Application according to designation, general safety instructions
2.1
Range of application, application according to designation
The thermal mass flowmeter FMT400-VTS/-VTCS is designed for flow rate measurements of gas. It is only suit-
able to be mounted:
• as insertion sensor in a pipe component with flange mounting in pipes of nominal widths from DN 25/1 " to
DN 200/8",
• via weld-on adapter directly in pipes with nominal widths up from DN 150/6" or in pipes with non-circular cross-
sections.
• The standard process temperature range is between -25 °C and +150 °C for process and hygienic types.
Process type sensors with extended temperature range can be operated between -25...+300 °C (metal sensor
-25...+250 °C).
DANGER
• The device is not certified for use in hazardous areas of zone 0 or 1. Zone 2/22 applications are certified
by a manufacturer declaration of conformity.
• Modification of construction details at the device by the user are not permitted.
Any other use is considered improper.
WARNING
For proper use it is required to observe the Technical data section in the data sheets. You will find the data sheets
in section chapter 10 “Technical Data” on page 31 of these operating instructions.
2.2
General safety instructions
2.2.1
Safe operation
The technology of the mass flow meter is state of the art.
The devices were designed, produced and tested in accordance with IEC 1010-1 (corresp. to EN 61010-1 and
DIN VDE 0411 part 1) „Safety reqirements for electrical measurement, control and laboratory equipment“ CE-
certified, and delivered in a safe condition. To maintain this state and guarantee hazard-free operation, all safety
instructions in this manual headed by "DANGER", „WARNING“, „CAUTION“ or „NOTICE“ must be observed.
Otherwise, personnel might be endangered and the mass flow meter itself or other devices and equipment could
be damaged.
Prerequisi-
tes for safe
operation
These operating instructions contain important information about the safe and proper operation of the equip-
ment. Observing these instructions is mandatory for safe operation.
Failure to observe the instructions can cause hazards for life and limb of the user respectively property damages
at the devices or the entire system.
Proper and safe operation of the mass flow meter requires proper transportation and storage, installation and
commissioning by qualified personnel, operation within its design limits, and careful maintenance observing all
information in these operating instructions.
Qualification
of personnel
Only personnel familiar with the installation, commissioning, and maintenance of similar devices and having the
required qualifications for their tasks are allowed to work on the device.
Operator
The operator of the plant is fully and solely responsible for proper and workmanlike and, thus, safe operation.
The operator must make sure that the operating instructions have been understood by the target audience.
A copy of the operating instructions must be stored in a suitable place at the usage location of the device at all
times.
Read these operating instructions prior to commissioning, decommissioning, maintaining, or repairing a device.
National
regulations
The regulations, standards, and guidelines mentioned in these operating instructions are valid for Germany.
When using the devices in other countries the appropriate and valid national regulations must be observed.
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