TESTO 240 - Care a a Nd M M Aintenance; General Remarks

Care aand mmaintenance
General rremarks
testo
240
requires no maintenance and is there-
fore not subject to particular maintenance intervals.
Clean the housing with a damp cloth. Weak
household cleaners can be used.
After use in an aggressive environment, the instru-
ment should be cleaned with a damp cloth.
Pull back the cable duct from the measuring cell, in
order to clean the electrodes.
Clean the electrodes with a soft brush.
Check whether the air vents and the cable duct are
clean.
Push the cable duct back into place.
The cell coefficient of the measuring cell should be
tested with the conductivity standard solution
(accessories) at intervals which depend on the type
of application.
Strong detergents or solvents should never be used
for cleaning the measuring instrument.
Please note that IP 54 protection is only
guaranteed when original plugs are connected.
Never clean with a water jet.
testo
term
testo
term
m
S
/c
m

m
S
/
c
m
¡
C
-
¡
F
te
s
to
®
2
40
H
O
L
D
I
0
Bat
Hold
¡
k
¡
W
A
u
t
o
p
m
V
2
p
H
M
a
n
/
x
NaCl
X
%/
DIN/NBS
mg/l
Cal
m
S
/c
m
m
13
testo
term