Velleman EVM851 User Manual
Page 5
16.04.201
6.
Gen
The DVM
voltages,
testing d
Refer to t
c Displ
3 ½ d
d Back
When
e Rotar
This
f Hold
Upon
the L
g "10A
Inser
h "COM
Inser
i "V
Ωm
Inser
(exce
7.
Ov
DMMs are
point of t
strike on
The exist
CAT I
CAT II
CAT III
CAT IV
Warning
This devi
that certa
within th
Th
8.
Pol
IEC 6101
are neces
against t
the enclo
device m
Pollution
Pollution
0
neral descrip
M851 is a batter
, DC current and
iodes and trans
the illustration o
ay
digits, 7 segme
light
n this button is
ry switch
switch is used t
button
n pushing this b
LCD until the bu
A" jack
rt the red test le
M" jack
rt the black (neg
mA" jack
rt the red (posit
ept 10A).
vervoltage/in
e categorized d
test. Transients
a power line.
ting categories a
A CAT I-rated m
directly connec
A CAT II-rated
appliances that
domestic enviro
apart from a CA
A CAT III-rated
as for measure
from of a CAT I
(fuse boxes, lig
A CAT IV-rated
well as on the p
Note that for a
overhead or un
g:
ce was designe
ain restrictions
e environment
his device is only
lution degre
10-1 specifies di
ssary to ensure
he pollution wh
osure properties
may be used.
degree 1 No
influ
degree 2 Only
ption
ry-operated, ha
d resistance. It
sistors. The back
on page 2 of th
nts, LCD : 15m
pushed, the bac
to select functio
utton, the displa
tton is pushed a
ead in this conn
gative) test lead
tive) test lead in
nstallation ca
epending on the
are short-lived
according EN 61
meter is suitable
cted to mains po
meter is suitab
t are connected
onment, provid
AT IV-environm
d meter is suitab
ements on (fixed
IV-environment
ghting circuits, e
d meter is suitab
primary supply
ll measurement
nderground) a C
d in accordance
in use apply tha
of use. Refer to
y suitable for m
ee
ifferent types of
safety. Harshe
ich is to be foun
s. The pollution
pollution or only
uence. (only to
y nonconductive
EVM8
5
nd-held 3 ½ dig
also offers the
k light is optiona
is manual:
m high
cklight will illum
ns and desired
ay will retain th
again.
ector in order t
d.
n this connector
ategory
e risk and sever
bursts of energ
1010-1 are:
e for measurem
ower, e.g. electr
ble for measurem
to the mains by
ed that the circ
ment. E.g. house
ble for measure
d) mono- or pol
t, and for measu
electric ovens).
ble for measurin
level.
ts on equipment
CAT IV meter m
e with EN 61010
at are related to
o the table abov
measurements u
f pollution envir
r environments
nd in a certain e
degree rating o
y dry, noncondu
be found in her
e pollution occu
851
gital multi-mete
possibility of ex
al.
minate your disp
ranges as well
he last reading a
o measure a ma
r to measure vo
rity of transient
gy induced in a
ments on protect
ronics circuits, c
ments in CAT I-
y means of a pl
uit is at least 10
ehold appliances
ements in CAT I
y-phased applia
urements in or o
ng in CAT I-, CA
t for which the s
ust be used.
0-1 installation c
o voltages and v
e.
p to 600V in C
ronments, for w
require more p
environment de
of the DVM indic
uctive pollution
rmetically sealed
rs. Occasionally
er for measuring
xecuting continu
play for approxim
as to turn the m
and the "
"-sy
ax. current of 1
ltage, resistanc
overvoltage tha
system, e.g. ca
ted electronic ci
control signals…
environments a
ug and circuits
0m apart from a
s, portable tools
- and CAT II-en
ances which are
on distribution l
AT II- and CAT I
supply cables ru
category CAT II
voltage peaks w
CAT II
hich different p
protection, and t
pends mainly on
ates in which en
occurs. The pol
d enclosures)
y, temporary co
©Vellema
g DC and AC
uity tests and of
mately 5 second
meter on/off.
ymbol will remai
0A.
e and current
at might occur a
used by lightnin
rcuits that are n
…
and mono-phase
in a normal
a CAT III- or 20
s…
nvironments, as
e at least 10m a
evel equipment
II-environment
un outdoors (eit
600V. This imp
which can occur
rotective measu
the protection
n the insulation
nvironment the
lution has no
nductivity cause
an nv
f
ds.
in on
at the
ng
not
e
0m
well
part
t
s as
ther
plies
ures
and
ed by