Your Cart
(empty)
0
Tradeport Electronics
measurement is our business
Cart : (empty)

GW Instek GDM-8040 - Instek 3 3/4 Digit AC True RMS Digital Multimeter

Instek  3 3/4 Digit AC True RMS Digital Multimeter

GW Instek

Category : Multimeters

Sale : $136 (USD)
$198 (USD)
Add to Cart

Documents:
Datasheet

Overview
Features
Information
Calibration
Quality Discontinued Clearance Product
  • 0.5 LCD display with 42 segment Bar graph and back lighting
  • Auto and Manu range operation
  • 500V fuse rating on current ranges (20A range Option)
  • Relative, MAX./MIN., Memory read and Data Hold
  • Multi-functions, ACV, DCV, ACA, DCA, R, C, Hz, Continuity Beeper and Diode Test
  • Auto power off function at battery mode
  • Built-in charger with NI-CAD batteries (Option BP-01)
  • AC True RMS
  • 0.5 LCD display with 42 segment Bar graph and back lighting
  • Auto and Manu range operation
  • 500V fuse rating on current ranges (20A range Option)
  • Relative, MAX./MIN., Memory read and Data Hold
  • Multi-functions, ACV, DCV, ACA, DCA, R, C, Hz, Continuity Beeper and Diode Test
  • Auto power off function at battery mode
  • Built-in charger with NI-CAD batteries (Option BP-01)
  • AC True RMS

DC Volts

Range Resolution Accuracy
± 400mV 100uV ±(0.1% of reading + 2 digits)
± 4V 1mV ±(0.1% of reading + 1 digits)
± 40V 10mV ±(0.1% of reading + 1 digits)
± 400V 100mV ±(0.1% of reading + 1 digits)
± 1000V 1V ±(0.1% of reading + 2 digits)
  • Normal mode rejection ratio : >50db at 60hz or 50hz.
  • Common mode rejection ratio : >90db at dc, 50hz or 60hz (1k° unbalanced)
  • response time to rated accuracy : 1 second maximum.
  • Maximum input : 1000v dc or peak ac continuous.
  • Ranging : auto / manu

 

AC Volts

Range Resolution Accuracy ±(% of reading + no. of digit)
40Hz 70Hz 500Hz 5KHz 10KHz 20KHz 50KHz
400mV 100µV 1%+5d** --
4V 1µV 0.5% + 3 2% + 10** 5% + 20 **
40V 10µV
400V 100µV 2% + 10** --
750V 1V 0.5% + 3 --

 

DC Current

Range Resolution Accuracy Burdon Voltage
4mA 1µA ±(0.2% of reading + 2d) 0.5V max
40mA 10µA
400mA 100µA
2A lmA ±(0.7% of reading + 3d) 1.2V max
20A 10mA

 

  • Maximum Input
    • ma : 4ma, 40ma, 400ma, 2a 4 ranges with a 2a 250v and a 4a 500v  fuse protection. 
    • 20a : 10a dc or ac rms continuous, 20a dc or ac rms for 15 seconds  maximum. Protected with a 20a 500v fuse.(option) 
  • ranging : auto / manu

AC Current

Range* Resolution Accuracy Burdon Voltage
40Hz 1KHz 5KHz
4mA 1µA 0.7% + 3d 2% + 5d 0.5V max
40mA 10µA 0.7% + 3d 2% + 5d 0.5V max
400mA 100µA 0.7% + 3d 2% + 5d 0.5V max
2A 1mA 1% + 5d -- 1.2V max
20A 10mA 1% + 5d -- 1.2V max
  • Maximum Input
  • mA : 4mA, 40mA, 400mA, 2A 4 ranges with a 2A 250V and a 4A 500V fuse protection.
  • 20A : 10A do or ac rms continuous, 20A dc or ac rms for 15 seconds maximum. Protected with a 20A 500V fuse.(option)
  • RANGING : AUTO / MANU

* : Accuracy are specify above 10% of full scale reading.

 

Resistance

Range Resolution Accuracy Maximum Open Voltage
Through The Unknown
400Ω 100mΩ ±(0.5%+ 3d) 0.5 Volts maximum
4KΩ 4--(0.5%+ 2d)
40KΩ 10Ω
400KΩ 100Ω
4MΩ 1KΩ ±( 1% + 2d)
40MΩ 10KΩ ±( 2% + 3d)
  • Input Protection: 500V DC or peak AC on all ranges.
  • Ranging: Auto/Manu

 

Capacitance

Range Resolution Accuracy for 1-year(note 2)
4nF* 1pF ±(5% of reading + 5 digits)
40nF* 10pF ±(2% of reading + 2 digits)
400nF 100pF
4µF 1nF
40µF 10nF
  • Input Protection : 500V dc or peak on all ranges.
  • Ranging    : AUTO / MANU

note 2: 4nF and 40nF must be using relative.
* : Specify for without test lead.

 

Frequency

Range Resolution Accuracy* Sensitivity
100Hz .01Hz

±(0.1% + 2d)

100mV
1KHz .1Hz 100mV
10KHz 1Hz 100mV
100KHz 10Hz 200mV
> 100KHz 100Hz 500mV
  • Frequency Range : > 5Hz to < 1MHz
  • Input Protection : 500V dc or peak ac on all ranges.
  • Ranging : AUTO ONLY.

* : The accuracy are not specify with trigger error. 

 

Diode Test

Test Current Approximately 0.7mA measuring a forward-biased junction.

Continuity Test

Sound Indication <40Ω
Response Time 60mS Approx.
Open Loop Voltage < 3 Volts

General

Other Functions Temperature test, Minimum Hold, Maximum Hold, Data Hold, Relative, Function-Range-Data Memory/Read(recall).
Display 0.5" LCD display and 42 Segement BAR with back lighting.
Back Lighting Push the " BL " button to turn on the back light.
Temperature Coefficient < 0.1 times the applicable accuracy specification per °C for O°C to 18°C and 28°C to 50°C.
Operating Temperature 0°C to 50°C
Storing Temperature -20°C to 65°C
Relative Humiity Up to 90%, 0°C to 35°C, Up to 75%, 35°C to 50°C.
Auto Range Range up : FREQ > 9999 counts, other function > 3999 counts
Range down : FREQ < 900 counts, other function < 380 counts
Maximum Common Mode Voltage 500VDC or peak AC.
Sample Rate 2 sample/second for digital display.
20 sample/second for bar display.
Power Requirements AC 110V,220V±15%,50/60Hz
NI-CD(1.3V 2/3AA x 6) :200 hours (options)
Dimensions & Weight 230(W) x 95(H) x 280(D), 1.8Kg approx.
Accessories Test Lead GTL-106, Instruction Manual, 2A Spare Fuse x 1.

Do you have a Instek 3 3/4 Digit AC True RMS Digital Multimeter that needs to be calibrated?

We offer standard traceable calibration and ISO 17025 accredited calibration services.

Get your Instek 3 3/4 Digit AC True RMS Digital Multimeter calibrated today! Click Here!