DIGITAL RED LED Frequency Tachometer Rotate Speed Meter DC12-24V Car 79*43mm

Description

F
eature:
Power supply: DC/AC 12-24V
Measure Range:
Frequency
: 0.15-99999Hz
Rotate speed
:30-99999 r/m
Maxed Display:
99999
High
frequency
measurement accuracy
, which could reach
to
0.01
‰
at 25 ° C
,
resolution could reach to
0.001HZ
.
Wide
range
of
frequency   measurement
:
0.15HZ
-
100KHZ
.
Measuring range could be automatically switched
from
00.000Hz
(
R
/   M
)
to
000.00KHz
(KR
/
M)
.
Work Modes:
Frequency meter
/
Tachometer
, you may change the
mode via press the switch;
Hold the work mode when power off
Keys to set
the
divider
value
,
divided  by
the value of
1-99999
and
0.0001-9.9999
file,
the
frequency
value of
power-down
save
Beautiful appearance
, sophisticated technology
and easy to use
Specifications:
Specifications
Frequency meter
Tachometer
Display Digit
0.56" 5-digits LED
Display
refresh ra
te
Signal frequency > 3HZ : 3 Times/ Sec
Signal frequency ≤ 3HZ: about singnal frequency
Over Flow Display
“- - - - -”
measurement accuracy
0.1%±1digit / Special: 0.01‰ @ 25℃
Measure Range
0.15HZ—100KHZ
9r－999.99Kr/m
input signal
Signal Type
Dry contact、PNP、NPN、Pulse
amplitude
3－30V or 30-300V(High Voltage)，this could be changed via adjust the
Short circuit
Measurement Method
Full synchronization period measurement
Input Resistance
100KΩ
Power Supply
DC/AC 12-24V
Withstand voltage
AC2000V 1min Between the External terminal and the shell
Anti-vibration
Vibration Frequency ：10－55HZ，  Acceleration: 50m/s2
X、Y、Z, each direction 5min X 10
Operating Temperature  and Humidity
Temperature:－30℃－＋70℃
Humidity:　25－85%　RH
Storage Temperature
－40℃－＋80℃
Panel Dimensions
(mm)
79X43X25（L×W×H)
Cut-out Dimensions
(mm )
75X39.5
Function Selection:
Frequency and Rotate speed display Set
(Please d
isconnect the input signal
before setting when the input signal is
High level voltage signal)
Open the back cover
of the meter,
Press
"
S2
" key to enter "SET" model and then press "S1" to change display mode
,
"0"
means
Frequency display
with filter ;
"1"
means
rotate speed
with
filter;
"2
"
means
Frequency display
without filter ;
"3"
means
rotate speed
without
filter.
10 seconds
later,
this meter will
automatically
return
to
the
measurement mode
, or
power-off
and restart
, this meter still could
return to
measurement mode too
.
Divider
Value Set
(
Please d
isconnect the input signal
before setting when the input signal is
High level voltage signal)
Open the back cover
, press the
"
S1
" key
to enter the
Sub-
frequency
Value Set
interface
,
"
S1
"
key   is
the shift key
,
"
S2
" key is the
value
plus
key
,
the
divider
value
must be set
in
1-99999
or
0.0001-9.9999
figures
, and   other
value
is
invalid
;After the
set
of
the desired
divider
value via
"
S1
" and
"S2
"
,
wait   10 seconds
and
the meter will
automatically
return
to
the
measurement
mode
,
or
power-off
and then restart
to
return
to
the
measurement mode
.
Divider
concept
:
The number of the singal the
gears get for one circle
.
For example
,
a
gear
can take
20
pulse signal
for one circle ,
the
divider
value
could be
set to
20.
High and Low voltage
signal input
switch
(
Please d
isconnect the input signal
before setting when the input signal is
High level voltage signal)
The
default set for this meter is
the
low voltage input
,
if you need
high-voltage input
,
you
need
to
open  the back cover
the more the short jumer from the "L
"
part.
Enter
the
high voltage directly
will
damage
the
meter
if the
short jumper is not removed.
We are not responsibility for this damage. Please
carefully
operation
!!
PIN Definition
1:
SIGNAL INPUT
2: SINGNAL GND
3: NC
4:
INPUT VOLTAGE "-" : GND
5: INPUT VOLTAGE  "+" : VCC
Singnal Type:
Dry contact、PNP、NPN、Pulse
Note:
Please
use the item
in
the
normal
environment
Please
select the correct operating mode
for your application
Please
set
the
correct divider
value
Input signal
should
meet
the
requirements
of
impedance,
if
the
internal impedance
of
the input
signal
is big and you need to change the impedance
For
safe operation
, please do not
set
the meter if there is high lever input signal
Please
do not
directly
touch
the
crystal
and chip
directly due to body
Static electricity can damage
the
device
and reduce
the
performance
.
Package
Frequency and
Tachometer
meter X 1pcs