Warranty information – GF Signet 515 Rotor-X Paddlewheel Flow Sensor User Manual
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Signet 515/2536 Rotor-X Flow Sensors
General Information
Georg Fischer Signet products are manufactured in a variety
of wetted materials to suit various liquids and chemicals.
All plastic materials including typical piping types (PVC,
PVDF, PP and PE) are more or less permeable to contained
media, such as water or volatile substances, including some
acids. This effect is not related to porosity, but purely a matter
of gas diffusion through the plastic.
If the plastic material is compatible with the medium according
to the application guidelines, the permeation will not damage
the plastic itself. However, if the plastic encloses other
sensitive components, as is the case with GF Signet plastic
paddlewheel sensors, these may be affected or damaged by
the media diffusing through the plastic body and rotor.
Failures of PVDF paddlewheel sensors when used in hot nitric
acid applications have been reported. PVDF is known to allow
for substantial permeation of nitric acid constituents without
being damaged itself. No clear guideline can be given here,
since the damaging effect to the sensor is highly dependent
on temperature, pressure and concentration.
Utilizing sensors in applications with aggressive substances is
possible. On special request GF Signet can provide sensors
with a different internal resin encapsulation (potting) that will
delay the damaging effect of acids to the sensors.
For all Special Product inquiries or to place an order, please
email signet-specialproduct@georgfi scher.com.
1. Depressurize and vent system prior to installation or removal.
2. Confi rm chemical compatibility before use.
3. DO NOT exceed maximum temperature or pressure specs.
4. ALWAYS wear safety goggles or faceshield during
installation and/or service.
5. DO NOT alter product construction.
Warning / Caution / Danger
Indicates a potential hazard. Failure to follow all warnings
may lead to equipment damage, injury, or death
Personal Protective Equipment (PPE)
Always utilize the most appropriate PPE during
installation and service of Signet products.
Pressurized System Warning
Sensor may be under pressure, take caution to vent
system prior to installation or removal. Failure to do so
may result in equipment damage and/or serious injury.
Hand Tighten Only
Overtightening may permanently damage product
threads and lead to failure of the retaining nut.
Do Not Use Tools
Use of tool(s) may damage product beyond repair and
potentially void product warranty.
Note / Technical Notes
Highlights additional information or detailed procedure.
Thank you for purchasing the Signet line of Georg Fischer
measurement products.
If you would like to register your product(s),
you can now register online in one of the following ways:
• Visit our website www.gfsignet.com and click
on
Product Registration Form
•
• Scan the QR Code on the left
Safety Information
Chemical Compatibility
Product Registration
Paddlewheel Retaining Nuts:
Red (515) and Blue (2536)
The retaining nuts of paddlewheel sensors are not designed
for prolonged contact with aggressive substances. Strong
acids, caustic substances and solvents or their vapor may
lead to failure of the retaining nut, ejection of the sensor and
loss of the process fl uid with possibly serious consequences,
such as damage to equipment and serious personal injury.
Retaining nuts that may have been in contact with such
substances, e.g. due to leakage or spilling, must be replaced.
WARNING!
Warranty Information
Refer to your local Georg Fischer Sales offi ce for the most
current warranty statement.
All warranty and non-warranty repairs being returned must
include a fully completed Service Form and goods must be
returned to your local GF Sales offi ce or distributor.
Product returned without a Service Form may not be
warranty replaced or repaired.
Signet products with limited shelf-life (e.g. pH, ORP, chlorine
electrodes, calibration solutions; e.g. pH buffers, turbidity
standards or other solutions) are warranted out of box but not
warranted against any damage, due to process or application
failures (e.g. high temperature, chemical poisoning, dry-out) or
mishandling (e.g. broken glass, damaged membrane, freezing
and/or extreme temperatures).