B&K Precision 2706B - Manual - Manual

OPERATING INSTRUCTIONS
MODEL 2706B
DIGITAL MULTIMETER
F
V V
COM
A
A
2706B
Hz V
SAFETY INFORMATION
The following safety information must be observed to ensure maximum personal
safety during the operation at this meter:
Use the meter only as specified in this manual or the protection provided by the
meter might be impaired.
Test the meter on a known voltage before using it to determine if hazardous
voltage is present.
Do not use the meter if the meter or test leads look damaged, or if you suspect
that the meter is not operating properly.
Never ground yourself when taking electrical measurements. Do not touch
exposed metal pipes, outlets, fixtures, etc., which might be at ground potential.
Keep your body isolated from ground by using dry clothing, rubber shoes, rubber
mats, or any approved insulating material.
Turn off power to the circuit under test before cutting, unsoldering, or breaking
the circuit. Small amounts of current can be dangerous.
Use caution when working above 60V dc or 30V ac rms. Such voltages pose a
shock hazard.
When using the probes, keep your fingers behind the finger guards on the
probes.
Measuring voltage which exceeds the limits of the multimeter may damage the
meter and expose the operator to a shock hazard. Always recognize the meter
voltage limits as stated on the front of the meter.
SPECIFICATIONS
Display: 3½ digit liquid crystal display (LCD) with a maximum reading of 1999.
Polarity: Automatic, positive implied, negative polarity indication.
Overrange: (OL ) or (-OL) is displayed.
Zero: Automatic.
Low battery indication: The "
" is displayed when the battery voltage drops
below the operating level.
Measurement rate: 2.5 times per second, nominal.
Auto power off: Approx. 25 minutes.
Operating environment: 0 ℃ to 50℃ at < 70% relative humidity.
Storage temperature: -20 ℃ to 60℃, 0 to 80% relative humidity.
Accuracy: Stated accuracy at 23 ℃±5℃, < 75% relative humidity.
Temperature Coefficient: 0.1 x (specified accuracy) per ℃. (℃ to 18℃, 28℃ to
50 ℃).
Altitude: 6561.7 feet (2000m).
Power: Single standard 9-volt battery, NEDA 1604, JIS 006P, IEC 6F22.
Battery life: 150 hours typical with carbon-zinc.
Dimensions: 165mm (H) x78mm (W) x42.5mm (D).
Weight: Approx. 10.0 oz.(285g) including holster.
Accessories: One set tes t leads, one spare fuse, 9V battery (installed), and
Operating Instructions.
DC VOLTS
Ranges: 200mV, 2000mV, 20V, 200V, 1000V
Resolution: 0.1mV
Accuracy: ± ( 0.5% rdg + 1 dgt)
Input impedance: 10M
Ω
Overload protection: 1000VDC or 750VAC rms
600VDC/AC rms 15 seconds on 200mV range
AC VOLTS (50Hz - 500Hz)
Ranges: 200mV, 2000mV, 20V, 200V, 750V
Resolution: 0.1mV
Accuracy:
± ( 1.2% rdg + 5 dgts) on 200mV to 20V ranges
± ( 2.0% rdg + 5 dgts) on 200V, 750V ranges
Input impedance: 10M Ω
Overload protection: 1000VDC or 750VAC rms
600VDC/AC rms 15 seconds on 200mV range
CURRENT
Ranges: 200uA, 20mA, 200mA
Resolution: 0.1uA
DC accuracy: ± ( 1.0% rdg + 1 dgts)
AC accuracy: (50Hz ~ 500Hz)
± ( 1.5% rdg + 5 dgts)
Input protection: 0.25A/500V fast blow ceramic fuse
RESISTANCE
Ranges: 200 Ω, 2kΩ, 200kΩ, 20MΩ
Resolution: 0.1 Ω
Accuracy:
± ( 1.0% rdg + 4 dgts) on 200 Ωto 200kΩranges
± ( 2.0% rdg + 4 dgts) on 20M Ωrange
Open circuit volts: 0.3Vdc (3.0Vdc on 200 Ωrange)
Overload protection: 500VDC or AC rms
CONTINUITY
Audible indication: Less than 100 Ω
Response time: 100ms
Overload protection: 500VDC or AC rms
DIODE TEST
Test current: Approx. 1.0mA
Accuracy: ±(1.5% rdg + 3dgts)
Open circuit volts: 3.0Vdc typical
Overload protection: 500VDC or AC rms
CAPACITANCE
Ranges: 200uF, 2mF, 20mF
Resolution: 0.1uF
Accuracy: ±(4% rdg + 10 dgts)
Test frequency: 21Hz
Test voltage: <3.0V
Input protection: 0.25A/500V fast blow ceramic fuse
FREQUENCY (Autoranging)
Range: 10Hz to 40kHz
Resolution: 1Hz
Accuracy: ±(0.1% rdg + 3 dgts)
Sensitivity: 3.5V RMS min
Overload protection: 500VDC or AC rms
TEMPERATURE
Ranges: -35 ℃ ~ 750℃, -30℉~ 1400℉
Resolution: 0.1 ℃, 0.1℉
Accuracy:
±(1.0% rdg + 1 ℃) 0℃ ~ 400℃
±(3.0% rdg + 3 ℃) -35℃ ~ 0℃, 400℃ ~ 750℃
±(1.0% rdg + 2 ℉) -4℉ ~ 750℉
±(3.0% rdg + 6 ℉) -30℉ ~ -4℉, 750℉ ~ 1400℉
Sensor type: K-type thermocouple
Overload protection: 60VDC or 30V AC rms
OPERATION
Before taking any measurements, read the Safety Information Section. Always
examine the instrument for damage, contamination (excessive dirt, grease, etc.)
and defects. Examine the test leads for cracked or frayed insulation. If any
abnormal conditions exist do not attempt to make any measurements.
MAX/MIN
Press MAX/MIN once begins recording MIN and MAX.
Press MAX/MIN to select current reading MIN or MAX.
Hold down for 2 seconds to exit MAX/MIN function.
Backlight
Press the button to activate the backlight for approximate 4.5 minutes.
Voltage Measurements
1.Connect the red test lead to ”V Ω” jack and the black test lead to the ”COM”
jack.
2.Set the Function/Range switch to the desired voltage type (AC or DC) and
range. If magnitude of voltage is not known, set switch to the highest range
and reduce until a satisfactory reading is obtained.
3.Connect the test leads to the device or circuit being measured.
4. For dc, a (-) sign is displayed for negative polarity; positive polarity is implied.
Current Measurements
1.Connect the red test lead to the ”mA” jack and the black test lead to the
"COM" jack.
2.Set the Function/Range switch to the DC or AC ranges.
3.Remove power from the circuit under test and open the normal circuit path
where the measurement is to be taken. Connect the meter in series with the
circuit.
4.Apply power and read the value from the display.
Resistance and Continuity Measurements
1.Set the Function/Range switch to the desired resistance range or continuity
position.
2.Remove power from the equipment under test.
3.Connect the red test lead to the “ V
Ω” jack and the black test lead to
the ”C O M ” jack.
4.Touch the probes to the test points. In ohms, the value indicated in the display
is the measured value of resistance. In continuity test, the beeper sounds
continuously, if the resistance is less than 100
Ω.
Diode Tests
1.Connect the red test lead to the “ V Ω” jack and the black test lead to
the ”C O M ” jack.
2.Set the Function/Range switch to the “ “ position.
3.Turn off power to the circuit under test. External voltage across the
components causes invalid readings.
4.Touch probes to the diode. A forward-voltage drop is about 0.6V (typical for a
silicon diode).
5.Reverse probes. If the diode is good, “OL” is displayed. If the diode is shorted,
“000” or another number is displayed.
6. If the diode is open, “OL” is displayed in both directions.
Capacitance Measurements
1. Set the Function/Range switch to the desired F (capacitance) range.
2.Connect the red test lead to the “F “ jack and the black test lead to the
“COM “ jack.
3.Touch the probes to the capacitor. Observe polarity when measuring polarized
capacitors.
4. Read the capacitance directly from the display.
5. Discharge the capacitor before taking capacitance measurements.
Frequency Measurements
1. Set the Function/Range switch to the “40kHz” position.
2. Connect the red test lead to the “ V Ω” jack and the black test lead to the 
“COM “ jack.
3. Connect the test leads to the point of measurement and read the frequency
from the display.
Temperature Measurements
1. Set the Function/Range switch to the desired temperature range: ℃, ℉
2. Remove leads and slide the Temp switch to the right to close lead jacks.
3.Plug any K -type thermocouple directly into the meter to measure temperature.
4. Take temperature measurement using the thermocouple probe and read the
temperature from the display.
Temp offset adjustment
The OFFSET control is set at the factory to allow for the variations found in
standard thermocouples. By adjusting the OFFSET control, you can optimize
measurement accuracy for a particular thermocouple at a particular
temperature.
MAINTENANCE
WARNING
Remove test leads before changing battery or fuse or
performing any servicing.
Battery Replacement
Power is supplied by a 9 volt battery. (NEDA 1604, IEC 6F22). The " " appears
on the LCD display when replacement is needed. To replace the battery, remove
the three screws from the back of the meter and lift off the front case. Remove
the battery from case bottom.
Fuse Replacement
If no current and capacitance measurements are possible. Check for a blown
overload protection fuse. For acc ess to fuses, remove the three screws from the
back of the meter and lift off the front case.
Replace (F1/current measurements) (F2/capacitance measurements) only with
the original type 0.25A/500V, fast acting ceramic fuse.
Cleaning
Wipe the case with a damp cloth and mild detergent. Do not use abrasives or
solvents. Dirt or moisture in the terminals can affect readings.
Safety: Conforms to IEC61010-1 (EN61010-1), CATII 1000V, CATIII 600V, Class
II, Pollution degree 2 Indoor use.
CATII: Is for measurements performed on circuits directly connected to the
low-voltage installation.
CAT III: Is for measurements performed in the building installation.
EMC: Conforms to EN61326.
The symbols used on this instrument are:
Caution, refer to accompanying documents
Equipment protected throughout by Double insulation (Class II)
Alternating current
Direct current
Ground