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TES TES-1393/TES-1394S ElectroMagnetic Field Tester

The EMF Tester is a handheld device that measures electromagnetic field (EMF) radiation quickly and accurately. It displays results in milli Gauss and micro Tesla, with triple-axis measurement and data logging capabilities.

  • Triple LCD Display – Shows readings clearly for all three axes.
  • Wide Measurement Range – 20/200/2000 milli Gauss and 2/20/200 micro Tesla.
  • High Accuracy – ±(3%+3d) at 50/60 Hz; ±(5%+3d) at 40–200 Hz.
  • Sampling Time – Fast response of approx. 0.5 second.

Description

The EMF Tester is designed for professionals and hobbyists who need a quick and reliable way to measure electromagnetic fields around power lines, home appliances, or industrial equipment. It supports triple-axis measurement and can display results in both milli Gauss (mG) and micro Tesla (μT), making it versatile for different applications.

The device offers high accuracy across multiple frequency ranges. For example, at 50Hz or 60Hz, accuracy is ±(3%+3d), while at 40–200Hz it is ±(5%+3d). Its over-input protection ensures the display shows “OL” when the reading exceeds safe limits. Users can store measurements manually or automatically via microSD card (model 1394S), making it ideal for data collection and later analysis.

With a triple LCD display and fast 0.5-second sampling time, the EMF Tester allows quick observation of EMF fluctuations. The compact body (150 × 72 × 35 mm) and lightweight design make it easy to carry for field inspections. Included accessories such as AAA batteries, operation manual, micro-USB cable, and CD software (for 1394S) allow immediate use.

Features

  • Triple-axis measurement for accurate EMF detection

  • Display units: milli Gauss (mG) & micro Tesla (μT)

  • Triple LCD display for simultaneous readings

  • High accuracy across 30 Hz – 2000 Hz

  • Over-input indication (“OL”) for safe readings

  • Data logging: 2000 records (1393) / microSD card (1394S)

  • Manual data memory: 99 sets (1394S)

  • Fast sampling: approx. 0.5 second

  • Long battery life: 33–40 hours with 6 AAA batteries

  • Operating range: 0–50°C, <80% RH; storage: -10–60°C, <70% RH

  • Lightweight portable design: 165g (1393) / 225g (1394S)

  • Included accessories: Operation manual, batteries, CD software, micro-USB cable (model 1394S)

Specifications

Display
Triple LCD display
Range
20/200/2000 milli Gauss
 2/20/200 micro Tesla
Resolution
0.01/0.1/1 milli Gauss
0.001/0.01/0.1 micro Tesla
Number of Axis
Triple axis
Band Width
30 Hz to 2000 Hz
Accuracy
20mG/2μT ± (3% + 30d)
±(3%+3d) at 50Hz or 60HZ
±(5%+3d) at 40Hz to 200HZ
−3dB at 30Hz to 2000HZ
Over-Input
The display shows “OL”
Auto data memory
microSD CARD. (1394S)
Sampling Time
Approx. 0.5 second
Battery
6 pcs size AAA (1393 Only Use Alkaline Battery)
Battery Life
Approx. 33 hours (1393) / Approx. 40 hours (1394S)
Operating Temp and Humidity
0°C to 50°C (32°F to 122°F)  below 80%RH
Storage Temp and Humidity
-10°C to 60°C  below 70%RH
Weight
Approx. 165g (1393) / Approx. 225g (1394S)
Dimension
150(L) × 72 (W) × 35(H) mm
Accessories Included
Operation Manual, 6 pcs size AAA. (1393)
Operation Manual, 6 pcs size AAA, CD Software,
micro-USB Cable. (1394S)

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