ADS Environmental Services FlowShark Pulse QR 775004 A1 - Manual (Page 184)

C H A P T E R 12
Materials and Chemical Resistance
Sensor construction involves the following materials:
z Stainless steel V4A (ground plate or pipe sensor jacket)
z PPO GF30 (sensor body)
z PEEK (sensor crystal cover)
z Polyurethane (cable sheath and glands)
Sensors with the pressure measurement cell include the following materials:
z Hastelloy C276
z Viton (PA/PR)
The sensors are resistant to wastewater, dirt, and rainwater. While the sensors do not
experience damage from the wastewater exiting most industrial plants, the sensors are
not resistant to all substances and mixtures.
In general, damage to the sensor may occur from chloride media
(corrodes stainless steel ground plate or sensor jacket), hydrogen
sulphide (H
2
S – decays copper wires and conductor paths from
diffusion through cable sheath or sensor body), and various
organic solvents (dissolves cable sheath or sensor body).
Individual substances may not adversely affect a sensor. However, under certain
circumstances, the combination of several of these substances could adversely affect
a sensor. Due to the unlimited number of possible combinations of substances, it is
impossible to determine the impact on a sensor from combining these substances.
Contact ADS representative to request free sample materials for long-term testing
purposes.
For special applications involving highly destructive or solvent-containing media,
Hastelloy or titanium ground plates are available for sensors made of PEEK. Pipe
sensors composed of highly resistant steel also are available. A special FEP coating
that is resistant to organic solvents or hydrogen sulphide is available for sensor cables
that will be immersed in the following highly corrosive, destructive media: