Zico ZI-9940 Operating Instruction

OPERATING

International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must refer to
the manual for further information.
This symbol, adjacent to a terminal, indicates that, under normal use, hazardous
voltages may be present
Double insulation

SAFETY NOTES


Do not exceed the maximum allowable input range of any function

Do not apply voltage to meter when resistance function is selected.

Set the function switch OFF when the meter is not in use.

WARNINGS


Set function switch to the appropriate position before measuring.

When measuring volts do not switch to current/resistance modes.

When changing ranges using the selector switch always disconnect the test leads from the
circuit under test.

Do not exceed the maximum rated input limits.

CAUTIONS

Improper use of this meter can cause damage, shock, injury or death. Read and understand
this user manual before operating the meter.
Always remove the test leads before replacing the battery.
Inspect the condition of the test leads and the meter itself for any damage before operating the
meter. Repair or replace any damage before use.
Use great care when making measurements if the voltages are greater than 25VAC rms or
35VDC. These voltages are considered a shock hazard.
Remove the battery if the meter is to be stored for long periods.
Always discharge capacitors and remove power from the device under test before performing
Diode, Resistance or Continuity tests.
 Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty
of connection to the recessed electrical contacts. Other means should be used to ensure that
the terminals are not "live".
 If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
Function
A AC
V DC, V AC
Resistance, Diode, Continuity Test

Meter Description

INSTRUCTION
ZI-9940
AC CLAMP METER

Input Limits

Maximum Input
200A
600V DC/AC
600V DC/AC
1. Current clamp
2. Clamp trigger
3. Rotary Function swith
4. LCD display
5. MAX Hold/ Backlight button
6. Mode select button
7. COM input jack
V Ω jack
8.
9. Battery Cover
1. AC DC AC (alternating current) and DC (direct currrent)
2. Minus sign
1.8.8.8 2000 count (0 to 1999) measurement reading
3.
4. AUTO AutoRange mode
5. MAX MAX Hold mode
6. Diode test mode
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7. Audible Continuity
8. HOLD Data Hold mode
9. BAT Low Battery icon
10. m,V,A,K,M,Ω Units of measure list

Specifications

Function Range & Resolution
AC Current 200.0 AAC
200.0 mVDC
2.000 VDC
DC Voltage 20.00 VDC
200.0 VDC
600 VDC
2.000 VAC
20.00 VAC
AC Voltage
200.0 VAC
600 VAC
200.0 
2.000K
20.00K
Resistance
200.0K
2.000M
20.00M
Clamp size Opening 0.7" (18mm) approx
Diode Test Test current of 0.3mA typical; Open circuit voltage 1.5V DC
typical.
Continuity Check Threshold <120; Test current < 1mA
" BAT" is displayed
Low Battery Indication
"OL " is displayed
Overrange Indication
Measurements Rate 2 per second, nominal
Input Impedance 7.8M (VDC and VAC)
Display 3-1/2 digits (2000 counts) LCD
BAT
kM
Accuracy (% of reading)
± (2.5% + 10 digits )
± (0.5% + 5 digits)
± (1.2% + 3 digits)
± (1.5% + 3 digits)
± (1.5% + 3 digits)
± (2.0% + 4 digits)
± (1.0% + 4 digits)
± (1.5% + 2 digits)
± (2.0% + 3 digits)
± (3.0% + 5 digits)