background image

1. SAFE TY RULES

This meter is designed for indoor use at temperatures between 0°C to 40°C and
altitudes up to 2,000m.

To ensure that the meter is used safely, follow all safety and operating instructions in
this operation manual. If the meter is not used as described in this operation manual, 
the safety features of this meter might be impaired.

Do not use the meter if the meter or test leads look damaged ,or if you suspect that
the meter is not operating properly.

When using the instrument, keep your fi ngers behind the fi nger guards on the plastic 
casing and probes.

Disconnect the live test lead before disconnecting the common test lead.

Make sure power is off before cutting, desoldering, or breaking the circuit wires. Small 
amounts of current can be dangerous.

Do not apply more than 600 VDC or 600V AC rms between a terminal and ground.

To avoid electrical shock, use CAUTION when working above 60V DC or 25V AC rms. 
Such voltages pose a shock hazard.

Never make measurements with the battery cover off.

To avoid electrical shock or damage to the meter, do not exceed the input limits.

2. INTERNATIONAL SYMBOLS

Important information  

 Dangerous Voltages 

see manual  

  Continuity

  AC  

 Ground

  DC 

   Double Insulation

3. TECHNICAL SPECIFICATIONS

3.1 General Specifi cations

Display:  

4 digits LCD, max. of 9999 display

Polarity: 

Automatic, (-) negative polarity indication

Zero adjustment:  

Automatic

Sample rate: 

0.25 Sec., 0.05 Sec. for bar graph

Over range indication:   “

OL

” is displayed

Power:  

9-volt battery type NEDA 1604, IEC6F22

Battery life: 

Approx. 70 hours. (w/ alkaline batteries)

Dimension:  

5.9”x2.95”x1.34” or 150x75x34 mm.

Weight:  

Approx. 8.9 Oz. or 252g (with battery).

Accesories: 

User’s Manual, Test Leads, Protective 
Holster,  Hard carriying case, K-type                 
temperature probe, Inductive pick-up and  
9V battery. 

3.2 Electrical Specifi cations

Accuracies are ±(% of r number of least signifi cant  digits) at 23°C
±5°C, less than 75% RH. For DC/AC current measurement, the maximum
current of 10 A is for 30 Sec. with 5 min. cool down between measurements.

4. OPERATION

4.1 Instrument Description

1)  

Case

2)  4 Digit LCD display
3)  Secondary Functions Button
4)  Auto/Manual Select
5)  Function Switch
6)  Current Measurment Input
7)  Common Input
8) Measurements Input
9)  Trigger and Rel. Button

10)  Hold and Max/Min. Button

4.2 Display Description

Function

Range

Accuracy

Input 

Impedance

Remarks

Overload 

Protection

Resistance

999.9

0.5%+6

-

1.3 V 

Max. Test 

Voltage 

(2.7 V in 

999.9

 

range)

600 Vrms

 

9.999 k



99.99 k

0.5%+2

999.9 k



 

4.000



M

0.8%+2

40.00 M

1.5%+5

Diode Test

9.999 V

-

< 3.5 V Test Voltage

600 Vrms

Frequency

999.9Hz to 

20.0 kHz

0.01%+2

1, 2, 20 and 200 Vrms  

Selectable threshold

600 Vrms

Fuel         

Injector

0.05 - 250 mS

0.05mS+1

Selectable 

+/- Slope, 

and 

Number of 

Cylinders

600 Vrms

0.0 - 100 %

0.04%/krpm +2

0.05 - 250 mS

0.05mS+1

0.0 - 100 %

0.04%/krpm/cyl +2

Tachometer

120-20000 RPM

2 RPM

RPM 4

600 Vrms

60-10000 RPM

RPM 2

30-5000 RPM

RPM 2M

Dwell

0.0º - 360.0º

1.2

º/krpm+1

1 to 12 

Cyl.

600 Vrms

0.0º - 100.0º

0.04

º/krpm/cyl +2

Temperature

-20º to 300ºC

3

ºC+1

K-Type Thermocouple 

Probe

600 Vrms

301º to 500ºC

2%+1

0º to 572ºF

6

ºF+2

573º to 932ºF

2%+2

Function

Range

Accuracy

Input 

Impedance

Remarks

Overload 

Protection

DC Voltage

999.9 mV, 

9.999 V, 

99,99V

0.3%+3

10 M



16M



for

999.9 mV 

range

-

600 Vrms

600 V

0.3%+5

AC Voltage

999.9 mV

2.5%+5

10 M



16M



for

999.9 mV 

range

50~200Hz

600 Vrms

9.999 mV, 

99.99 V

2.5%+5

50~500Hz

DC Current

4000 mA

1.2%+6

0.03V/A 

Burden 

Voltage

-

10 A - 250V 

Fast Acting 

Fuse

10.00 A

0.8%+4

AC Current

4000 mA

2.5%+10

0.03V/A 

Burden 

Voltage

-

10 A - 250V 

Fast Acting 

Fuse

10.00 A

1.2%+3

1

2

3
4

10
9

5

6

8

7

Analog 

Bar Graph

Bar Graph
Overfl ow

Max./Min. 

and Average

Bar Graph/Trigger Polarity

Record 

Function

Auto Power Off

Autoranging

Hold

Digital

Readout

Low Battery

Relative 
Measure

ment

CT

802

7

Summary of Contents for CT8027

Page 1: ...and 9V battery 3 2 Electrical Specifications Accuracies are of reading number of least significant digits at 23 C 5 C less than 75 RH For DC AC current measurement the maximum current of 10 A is for 30 Sec with 5 min cool down between measurements 4 OPERATION 4 1 Instrument Description 1 Case 2 4 Digit LCD display 3 Secondary Functions Button 4 Auto Manual Select 5 Function Switch 6 Current Measur...

Page 2: ...urement Readout will show on the LCD display 4 3 2 DC Current measurement Connect the black test lead to the COM socket and red test lead to the A mA input connector Set the FUNCTION switch to the mA A function Connect the test leads in series with the source or load under measurement The instrument default to DC measurement To measure AC Current press the SELECT button momentarily Connect the tes...

Page 3: ...ain This function applies to both Port Fuel Injectors PFI and Throttle Body Injectors TBI To change the trigger level and slope please refer to Section 4 4 4 and 4 4 5 of this manual 4 4 Other Functions 4 4 1 Diode Test CAUTION Maximum Input Voltage for this function is 600 Vrms do not exceed this rating to avoid personal injuries or damage to the instrument Connect the black test lead to the COM ...

Page 4: ...or no significant meter reading changes The instrument is turned automatically ON if the FUNCTION switch is operated 4 4 9 External power lines noise filtering When the RECORD function is activated the instrument will turn off the AUTO POWER OFF function and the indicator in the display will not show To read the MAX MIN MAX MIN and AVG press the REC button to step through the recorded measurements...

Reviews: