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TES-2900

True RMS MULTIMETER

Product Features
  • Variable – frequency drive (VFD) V & Hz measurement.
  • Lo – Z voltage measurement to drain ghost voltages.
  • Check 3 phase sequence.
  • Voltage harmonic ratio measurement.
  • Smart ohm for ground resistance measurement.
  • Data hold & Auto hold mode.
  • Max/Min/Avg record mode.
  • Relative value display.
  • Frequecy count. (Auto-Range)
  • Temperature type K, J measurement.
  • Capacitance measurement.
  • Data memory & read function.
True RMS MULTIMETER
SPECIFICATIONS :
Accuracies are ±(...% of reading + ...digits) at 23℃ ± 5℃,below 80% RH.
AC Voltage 
AC conversions are ac-coupled and valid from 3 % to 100 % of range. 
Range
Resolution
Accuracy
45 – 65Hz
15 – 200Hz
200 – 440Hz
440Hz – 1kHz
1 – 5kHz
5 – 20kHz
999.9mV
0.1mV
±(0.7%+4)
±(1.0 % + 4)
±(2%+4)
±(2%+20)
    [1]
9.999V
0.001V
99.99V
0.01V
±(0.7%+2)
±(2%+4)
    [2]
Unspecified
999.9V
0.1V
Unspecified
VFD
±(1.0%+4)
+1.0%+4
-6.0%-4  [3]
Unspecified
Unspecified
Unspecified
[1] Below 10 % of range, add 12 counts. 
[2] Frequency range: 1 to 2.5kHz 
[3] Specification increases from -1% to -6% at 440Hz when filter is used.

 DC Voltage, Conductance, and Resistance

Function

Range

Resolution

Accuracy

mV dc

999.9mV

0.1mV

±(0.1% + 1)

V dc

9.999V

0.001V

±(0.05% + 1)

99.99V

0.01V

999.9V

0.1V

Ω

999.9Ω

0.1Ω

±(0.2% + 2)   [2]

9.999kΩ

0.001kΩ

±(0.2% + 1)

99.99kΩ

0.01kΩ

999.9kΩ

0.1kΩ

9.999MΩ

0.001MΩ

±(1% + 1)

50.00MΩ

0.01MΩ

±(5% + 1)   [1]

nS

99.99nS

0.01nS

±(5% + 10)   [1,2]

[1] Add 0.5% of reading when measuring above 30MΩ in the 100MΩ range, and 20 counts below 33nS in the 100nS range.

[2] When using the rel function to compensate for offsets.Smart Ω: ±(1% + 2).

 

Temperature

 

Thermocouple Type

Range

Accuracy

K

-40 to 1372 (-40 to 2502)

±1.0%±1(2)

J

-40 to 1200 (-40 to 2192)

[1] Does not include error of the thermocouple probe.

[2] Accuracy specification assumes ambient temperature stable to ± 1°C.
     For ambient temperature changes of ± 5°C, rated accuracy applies after 2 hour.

  AC Current (45Hz to 10kHz)

Function
Range
Resolution
Burden Voltage
Accuracy
μA ac
999.9μA
0.1μA
100μV/μA
±(1.0 % + 2)
9999μA
1μA
100μV/μA
mA ac
99.99mA
0.01mA
3.6mV/mA
400.0mA
0.1mA
3.6mV/mA
A ac
9.999 A
1mA
50V/A
AC conversions is true rms responding, and valid from 3% to 100% of range, except 400 mA range. 
(5% to 100% of range) and 10A range (15% to 100% or range).
 
DC Current 
Function
Range
Resolution
Burden Voltage
Accuracy
μA dc
999.9μA
0.1μA
100μV/μA
±(0.2% + 4)
9999μA
1μA
100μV/μA
±(0.2% + 2)
mA dc
99.99 mA
0.01 mA
3.6 mV/mA
±(0.2% + 4)
400.0 mA
0.1 mA
3.6 mV/mA
±(0.2% + 2)
A dc
9.999 A
1 mA
50 mV/A
±(0.2% + 2)
 
Capacitance 

Range

Resolution

Accuracy

10.00nF

0.01nF

±(2.0% + 2) [1]

100.0nF

0.1nF

1.000μF

0.001μF

±(2.0% + 2)

10.00μF

0.01μF

100.0μF

0.1μF

9999μF

1μF

[1] With a film capacitor or better, using the rel mode to zero residual.
Diode 

Range

Resolution

Accuracy

2V

0.001V

±(1.0% + 1)

 
 
3f Phase Sequence Indication

Range

Frequency Response

Overload Protection

80V to 480V

50Hz / 60Hz

1000V

 
Frequency Counter Specifications

Range

Resolution

Accuracy

99.99Hz

0.01Hz

±(0.1% + 1)

999.9Hz

0.1Hz

9.999 kHz

0.001kHz

99.99 kHz

0.01kHz

999.9 kHz

0.1kHz

9999 kHz

1kHz

From 5Hz to 99.99kHz, pulse width > 5μs.

 
Frequency Counter Sensitivity
Input Range
Approximate Voltage Sensitivity (rms sine wave) [ 1 ]

5Hz to 100Hz

100Hz to 100kHz

999.9mV

50mV VFD

50mV

9.999V

500mV VFD

500mV

99.99V

5V VFD

5V

999.9V

50V VFD

50V

Input Range
Approximate Current Sensitivity (rms sine wave) 

5Hz to 100Hz

100Hz to 10kHz

999.9μA

50μA  VFD

50μA

9999μA

500μA

500μA

99.99mA

5mA  VFD

5mA

400.0mA

  50mA

50mA

9.999A

1A  VFD

1A

[1] Maximum input = 10 x range (1000V maximum, 2 x 107 V-Hz product maximum)

VFD : Enabled Low Pass filter

 
Hz Logic Level Frequency

Range

Sensitivity

5Hz to 9999Hz

3.0Vp square wave

 
Input Characteristics 
Function
Overload
Protection
Input
Impedance
(nominal)
Common Mode
Rejection Ratio
(1 kΩ unbalance)
Normal Mode Rejection
 
1000V rms
10MΩ<100pF
> 120dB at dc, 
50Hz or 60Hz
> 60dB at 50Hz or 60Hz
 
1000V rms
> 120dB at dc,
50Hz or 60Hz
> 60dB at 50Hz or 60Hz
 
1000V rms
10MΩ<100pF
(ac-coupled)
> 60dB, dc to 60Hz
 

 
 
Open Circuit
Test Voltage
Full Scale Voltage
Typical Short Circuit Current
To 1MΩ
>1MΩ or 
100nS
1kΩ
10kΩ
100kΩ
1MΩ
10MΩ
50MΩ
W
1000V rms
 
  
 
200μA
20μA
2μA
0.2μA
0.1μA
0.1μA
 
1000V rms
 
2.0V dc
200μA typical
 
 
General Specifications:
Power Source: Single standard 9-volt battery, NEDA 1604, JIS 006P, IEC 6F22.
Weight: Approx. 470g
Size: 193mm(L)×91mm(W)×53mm(H), (7.6”L×3.6”W×2.1”H)
Accessories : Test leads, Battery, Operating Instruction

You can get an accurate ground resistance measurement in the presence of offset voltage.