Technical Specifications; Specifications - Hach POLYMETRON 8398 User Manual

3.

TECHNICAL SPECIFICATIONS

3.1 Specifications

Measurement range
Precision
Conductivity response
Temperature response
Cell constant
Roughness
Chemical resistance
Mechanical resistance
Heat resistance
0 to 2000 mS/cm
r 2 % of the displayed value or r 0.004 mS/cm
< 1 s
T 50 % = 20 s
T 90 % = 2 mn
-1
K = 2.35 cm
Ra < 0.5 μm (roughness certificate on request,
Ref.: 08398=T=1111)
Our mono-block probe is made from PEEC
(poly ether ether Ketone), whose chemical
resistance is summarised in the table §9.
WARNING: PEEC is not resistant to high
concentrations of oxidative acids (nitric and
sulphuric acid > 70 %, etc.)
probe 8398.5, one must consider the other
materials in contact with the process (EPDM or
VITON gaskets, PP or 316 stainless steel
extension, etc.).
PEEC possesses
(pressure: 18 bars) of approximately 300 °C.
In the case of probe 8398.5, take account of
extensions, if any.
PEEC is a polymer that is particularly well-
suited to sterilisation, it can therefore withstand
temperatures of 140 °C.
Inductive Probe 8398
In the case of
a flexion temperature
6