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home > B&K Precision 2709B Auto Ranging True RMS Tool Kit DMM > B&K Precision 2709B Auto Ranging True RMS Tool Kit DMM
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B&K Precision 2709B Auto Ranging True RMS Tool Kit DMMB&K Precision 2709B Auto Ranging True RMS Tool Kit DMM Key Features At A Glance True RMS AC measurement for accurate readings on non sinusoidal signals (crest factor <3) Auto and manual ranging across DC AC voltage, current, resistance, capacitance, and frequency DC voltage to 1000 V, AC voltage to 750 V, current measurement to 10 A AC DC Resistance measurement to 66 M and capacitance to 66 mF across eight ranges Frequency counter to 66 MHz with (0.
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B&K Precision 2709B Auto Ranging True RMS Tool Kit DMM

Key Features At A Glance

  • True RMS AC measurement for accurate readings on non-sinusoidal signals (crest factor <3)
  • Auto and manual ranging across DC/AC voltage, current, resistance, capacitance, and frequency
  • DC voltage to 1000 V, AC voltage to 750 V, current measurement to 10 A AC/DC
  • Resistance measurement to 66 MΩ and capacitance to 66 mF across eight ranges
  • Frequency counter to 66 MHz with ±(0.1% rdg + 3 dgts) accuracy
  • 3 3/4 digit 6600-count LCD with green backlight for low-light measurements
  • Magnetic hanging strap and ergonomic one-handed knob operation
  • Auto power off (approximately 30 minutes) extends 150-hour typical battery life

A digital multimeter measures the fundamental electrical quantities — voltage, current, and resistance — that define every powered circuit. True RMS multimeters extend that capability to non-sinusoidal waveforms, which appear throughout modern electronics wherever switching power supplies, variable-frequency drives, or distorted line conditions are present. An auto-ranging meter selects the appropriate measurement scale automatically, reducing setup time and the risk of selecting a range that under-resolves the signal.

The 2709B is an auto-ranging True RMS handheld digital multimeter from the BK Precision 2700 Tool Kit Series. It combines a 6600-count 3 3/4 digit LCD with a green backlight, an auto/manual ranging selector, and a measurement suite covering DC voltage to 1000 V, AC voltage to 750 V, AC and DC current to 10 A, resistance to 66 MΩ, capacitance to 66 mF, and frequency to 66 MHz. Diode test and continuity test are included, with continuity audible indication below 30 Ω and a 100 ms response time.

ValueTronics has supplied test and measurement equipment to engineering and field-service teams since 1992 from our 20,000 sq ft secure warehouse at 1675 Cambridge Drive, Elgin, Illinois. Every instrument moving through our facility is handled by people who work with this category of equipment every day, so when a customer asks about a 2709B — whether for a single bench, a fleet of service vans, or a calibration replacement — the answer comes from someone who has the unit on hand rather than a drop-shipped catalog listing.

Accessories Supplied

  • One set test leads
  • One spare fuse
  • 9V battery (installed)
  • Instruction manual

Product Core & Specifications

Specifications — Model 2709B
DC Volts
Ranges 660 mV, 6.6 V, 66 V, 660 V, 1000 V
Resolution 0.1 mV, 1 mV, 10 mV, 100 mV, 1 V
Accuracy ±(0.5 % rdg + 2 dgts)
Input Impedance 660 mV: >100 MΩ; 6.6 V: 10 MΩ; 66 V to 1000 V: 9.1 MΩ
Overload Protection 1000 VDC or 750 VACrms
AC Volts (50 Hz–500 Hz)
True RMS Applies
Ranges 660 mV, 6.6 V, 66 V, 660 V, 750 V
Resolution 0.1 mV, 1 mV, 10 mV, 100 mV, 1 V
Accuracy 660 mV range at 50 Hz to 60 Hz ±(1.5 % rdg + 8 dgts); 6.6 V to 660 V ranges: ±(1.5 % rdg + 8 dgts); 750 V range: ±(2.0 % rdg + 8 dgts)
Crest Factor <3
Input Impedance 660 mV: >100 MΩ; 6.6 V: 10 MΩ; 66 V to 750 V: 9.1 MΩ
Overload Protection 1000 VDC or 750 VACrms
DC Current
Ranges 660 uA, 6600 uA, 66 mA, 400 mA, 10 A
Resolution 0.1 uA, 1 uA, 10 uA, 100 uA, 10 mA
Accuracy 660 uA to 400 mA ranges: ±(1.5 % rdg + 2 dgts); 10 A range: ±(3.0 % rdg + 3 dgts)
Input Protection 0.5 A/500 V & 10 A/600 V fast blow ceramic fuses
10A Input 10 A for 60 sec max. followed by a 10 minute cooling period
AC Current (50 Hz–500 Hz)
True RMS Applies
Ranges 660 uA, 6600 uA, 66 mA, 400 mA, 10 A
Resolution 0.1 uA, 1 uA, 10 uA, 100 uA, 10 mA
Accuracy 660 uA to 400 mA ranges: ±(2.0 % rdg + 10 dgts); 10 A range: ±(3.5 % rdg + 10 dgts)
Crest Factor <3
Input Protection 0.5 A/500 V & 10 A/600 V fast blow ceramic fuses
10A Input 10 A for 60 sec max. followed by a 10 minute cooling period
Resistance
Ranges 660 Ω, 6.6 kΩ, 660 kΩ, 6.6 MΩ, 66 MΩ
Resolution 0.1 Ω, 1.0 Ω, 10 Ω, 1 kΩ, 10 kΩ
Accuracy 660 Ω to 660 kΩ ranges: ±(1.2 % rdg + 5 dgts); 6.6 MΩ range: ±(2.0 % rdg + 5 dgts); 66 MΩ range: ±(3.5 % rdg + 5 dgts)
Open Circuit Voltage (typical) -0.45 VDC (-1.2 VDC on 660 Ω range)
Overload Protection 500 VDC/ACrms
Capacitance
Ranges 6.6 nF, 66 nF, 660 nF, 6.6 uF, 66 uF, 660 uF, 6.6 mF, 66 mF
Resolution 1 pF, 10 pF, 100 pF, 1 nF, 10 nF, 100 nF, 1 uF, 10 uF
Accuracy 6.6 nF range: ±(3.0 % rdg + 30 dgts); 66 nF to 660 uF ranges: ±(3.0 % rdg + 5 dgts); 6.6 mF to 66 mF ranges: ±(5.0 % rdg + 20 dgts)
Overload Protection 500 VDC/ACrms
Frequency
Ranges 660 Hz, 6.6 kHz, 66 kHz, 660 kHz, 6.6 MHz, 66 MHz
Resolution 0.1 Hz, 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz
Accuracy ±(0.1 % rdg + 3 dgts)
Sensitivity 10 Hz to 6.6 MHz: >2.5 Vrms; 6.6 MHz to 66 MHz: >2.5 Vrms <5 Vrms
Minimum Pulse Width >25 ns
Duty Cycle Limits >30 % and <70 %
Overload Protection 500 VDC/AC rms
Diode Test
Test Current 1.2 mA (typical)
Resolution 1 mV
Accuracy ±(3.0 % rdg + 3 dgts)
Audible Indication <0.03 V
Open Circuit Voltage 3.5 VDC (typical)
Overload Protection 500 VDC/ACrms
Continuity
Audible Indication Less than 30 Ω
Response Time 100 ms
Overload Protection 500 VDC/ACrms
General
Display 3 3/4 digit, 6600 count LCD
Polarity Automatic, positive implied, negative polarity indication
Overrange OL or -OL is displayed
Low Battery Indication The battery symbol will display when battery voltage drops below operating levels
Measurement Rate 2 times per second
Auto Power Off Approximately 30 minutes
Operating Environment 0°C to 50°C at <70 % relative humidity
Storage Environment -20°C to 60°C at 0 to 80 % relative humidity
Accuracies Stated accuracy at 23°C ±5°C at <75 % relative humidity
Temperature Coefficient 0.1 x (specified accuracy) per °C. (0°C to 18°C, 28°C to 50°C)
Power Single standard 9 volt battery, NEDA 1604, JIS 006P, IEC 6F22
Battery Life 150 hours typical
Dimensions 165 mm (H) x 78 mm (W) x 42.5 mm (D)
Weight Approximately 10.3 oz. (377 g) with battery and hanger
Warranty One Year Warranty
Important: Maximum 10 A input is rated for 60 seconds, followed by a 10-minute cooling period.Important: 10A Input rating: 10 A for 60 sec max. followed by a 10 minute cooling period (applies to both DC and AC current measurements on the 10 A range).Important: Stated accuracies apply at 23°C ±5°C at <75 % relative humidity.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.

B&K Precision 2709B Auto Ranging True RMS Tool Kit DMM

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