General Specifications; Accurate Specifications; Dc Voltage - KNOVA KN 8056 Manual

Diagnosis of automotive Troubles
Ground
Black
Low frequency MAF Sensor of
GM (General Motor in 1988 or before
Testing Procedure:
(1) Connect the DC voltage type MAF sensor in
the DC voltage testing method and set the
rotary switch of the meter to 20VDC. Connect
the frequency type MAF sensor in the RPMx10
testing method and set the meter to the number
of cylinders in the automobile.
Now take 4 cylinders (4CYL) for example.
(2) Connect the black test lead probe of the meter
to the ground terminal (i.e. ground strap
connection) and connect the red one as
illustrated in figure 21.
(3) Turn on the ignition key but do not start
the engine.
Displayed Values:
DC Voltage Type Sensor:
The displayed value should be less than or equal to
1V. (The details shall be based on the parameters
furnished by the supplier.)
Frequency Type Sensor:
In a vacuum state, the displayed value should be
330 RPM 5%. (This only applies to GM low
frequency sensors.) The other low frequency
sensors shall be based on the parameters
furnished by the supplier.)
WARNING
• The reading becomes the actual RPM
only after it is multiplied by 10.
• Frequency = RPM/30. (This only applies to
4CYL.).
General Specifications
• Maximum Voltage between any Terminals
and grounding: Refer to different range input
protection voltage.
• Fuse Protection of
mA terminal
figure 20
Red
: CE Version: 315mA, 250V,
fast type, ø5 x 20mm
• Fuse Protection of
10A terminal
• Measurement Speed : Updates 2-3
• Maximum Display
• Temperature
• Relative Humidity
• Altitude: Operating
• Battery Type
• Electromagnetic
Compatibility
• Battery Deficiency
• Negative reading
• Overloading
• Equipped with full
icons display.
• Manual ranging.
• Polarity
• Dimensions (HxWxL) : 179 x 88 x 39 mm.
• Weight
• Safety/Compliances
• Certification
Accurate Specifications
Accuracy: (a% Reading + Digits), guarantee
for 90 days.
Operating Temperature: 18oC to 28oC.
Relative Humidity: No more than 75% RH.
A. DC Voltage
Range Resolution
200mV 0.1mV
2 V 1mV
20V 10mV
200V 100mV
1000V 1V
13
Remark: Input impedance: 10MΩ
: CE Version: 10A, 250V,
fast type, ø5 x 20mm
times /second.
: 1999.
: Operating: 0ºC~40ºC
(32ºF~104ºF)
Storage: -10ºC~50ºC
(14oF~122oF)
: 75% @ 0ºC
to below 30ºC;
50% @ 30ºC to 40ºC.
: 2000m; Storage:
10000m.
: One piece of 9V
(NEDA1604
or 6F22 or 006P).
: In a radio field of 1 V/m,
Overall Accuracy
= Specified
Accuracy + 5%
of Range; in a radio field
of more than 1 V/m, no
assigned accuracy
is specified
: Display .
: Display .
: Display 1.
: Automatically display.
: 380 g. (including holster
and battery)
: IEC61010: CAT. II
1000V, CAT. III 600V
overvoltage and double
insulation standard.
:
Accuracy Overload protection
230VAC
±(0.5%+5) 1000 VDC or 750
VAC continuous
±(0.8%+5)