EXTECH
INSTRUMENTS
EX850-en-GB_v2.4 7/16
15
Clamp
jaw
opening
43mm
(1.7")
approx.
Display
3
‐
3/4
digits
(4000
counts)
backlit
LCD
Continuity
check
Threshold
40
;
Test
current
<
0.5mA
Diode
test
Test
current
of
0.3mA
typical;
Open
circuit
voltage
<
3VDC
typical
Low
Battery
indication
Battery
symbol
is
displayed
Over
‐
range
indication
‘OL’
display
Measurement
rate
2
readings
per
second,
nominal
Bluetooth
range
10m
(32
ft.)
approximately
PEAK
Captures
peaks
>1ms
Thermocouple
sensor
Type
K
thermocouple
required
IR
Spectral
response
6
to
16µm
IR
Emissivity
0.95
fixed
IR
distance
ratio
8:1
Input
Impedance
10M
(VDC
and
VAC)
AC
bandwidth
50
to
400Hz
(AAC
and
VAC)
AC
response
True
rms
(AAC
and
VAC)
Crest
Factor
3.0
in
40A
and
400A
ranges,
1.4
in
1000A
range
(50/60Hz
and
5%
to
100%
of
range)
Operating
Temperature
5
C
to
40
C
(41
F
to
104
F)
Storage
Temperature
‐
20
C
to
60
C
(
‐
4
F
to
140
F)
Operating
Humidity
Max
80%
up
to
31
C
(87
F)
decreasing
linearly
to
50%
at
40
C
(104
F)
Storage
Humidity
<80%
Operating
Altitude
2000m
(7000ft.)
maximum
Battery
One
(1)
9V
Battery
(NEDA
1604)
Auto
power
OFF
After
approx.
10
minutes
Dimensions
&
Weight
270
x
110
x
50mm
(10.6
x
4.3
x
2”)
386g
(13.6
oz.)
Safety
For
indoor
use
and
in
accordance
with
the
requirements
for
double
insulation
to
IEC1010
‐
1
(2001):
EN61010
‐
1
(2001)
Overvoltage
Category
IV
600V
and
Category
III
1000V,
Pollution
Degree
2.
Patent
notice
U.S.
Patent
7163336
Copyright
©
2014
‐
2016
FLIR
Systems,
Inc.
All
rights
reserved
including
the
right
of
reproduction
in
whole
or
in
part
in
any
form
ISO
‐
9001
Certified
www.extech.com
