| Brand | Meco |
| Model | DET 909 |
| Product Type | Digital Earth / Ground Resistance Tester |
| Earth Resistance Range | 0–100 Ω & 0–1000 Ω |
| Resolution | 0.1 Ω / 1 Ω |
| Earth Voltage Range | 0–10V AC |
| Voltage Resolution | 0.01V AC |
| Display | 3½ Digit LCD |
| Display Count | 1999 Counts |
| Digit Height | 14 mm |
| Display Type | LCD with Backlight |
| Measurement Frequency | 820Hz |
| Earth Resistance Accuracy | ±(3% rdg + 5 dgt) |
| Earth Voltage Accuracy | ±(1% rdg + 2 dgt) |
| Test Current | 10mA AC Maximum |
| Conversion Rate | 2.5 Seconds |
| Power Supply | 8 × 1.2V AA Rechargeable Batteries |
| Auto Power Off | Available |
| Data Hold | Available |
| Low Battery Indication | Available |
| Safety Standard | IEC 1010 CAT III 200V |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -20°C to 60°C |
| Humidity | Maximum80% RH |
| Weight | 1 kg |
| Dimensions (L x W x H) | 7.5 x 16.6 x 11.1 cm |
The Meco DET 909 Digital Earth / Ground Resistance Tester is a reliable and compact electrical testing instrument developed for professional earthing system inspection and maintenance. Proper grounding is essential for electrical safety, and this tester helps engineers and technicians verify the effectiveness of earthing arrangements in industrial, commercial, and power distribution applications.
The instrument is designed for measuring earth resistance of electrical installations and can also measure earth voltage. It is suitable for checking earthing systems used in power plants, substations, factories, telecommunication networks, electrical panels, and industrial equipment.
The Meco DET 909 provides two measurement ranges:
0–100 Ω Earth Resistance Range for accurate low resistance grounding measurement
0–1000 Ω Earth Resistance Range for general earthing system testing
0–10V AC Earth Voltage Measurement for checking ground voltage conditions
The tester uses an 820Hz measurement frequency, which helps minimize the effect of electrical noise and harmonic interference, providing stable and reliable readings even in industrial environments.
The instrument features a 3½ digit LCD display with 1999 counts and 14 mm digit height, providing clear visibility of measurement values. The backlight facility allows easy operation in low-light conditions. The display also provides function icons for simple identification of operating modes.
The DET 909 is designed for easy operation with range selection switches and single-person push-button operation. Its simple Connect–Press–Read method allows technicians to perform earth resistance testing quickly without complex procedures.
The tester includes useful functions such as:
Data Hold Function – Freezes displayed readings for recording.
Low Battery Indication – Alerts the user when battery power is low.
Auto Power Off Function – Helps conserve battery life.
Noise & Interference Rejection – Improves measurement stability.
The Meco DET 909 comes with a sturdy, compact, and lightweight design, making it suitable for field engineers and maintenance professionals. It operates on 8 × 1.2V AA rechargeable batteries with built-in charging facility, providing convenient operation for regular testing work.
The instrument is designed to generally conform to IS 10656-1983 standards and provides IEC 1010 CAT III 200V safety protection, making it suitable for professional electrical testing environments.
Key Features:
Digital Earth / Ground Resistance Tester
Measures Earth Resistance
0–100 Ω
0–1000 Ω
Earth Voltage Measurement
0–10V AC
3½ Digit LCD Display
1999 Counts Display
14 mm Large Digit Height
Backlight Display
Measurement Frequency:
820HzData Hold Function
Low Battery Indication
Auto Power Off Function
High Noise & Interference Rejection
Simple Connect–Press–Read Operation
Single Person Push Button Operation
Rechargeable Battery Operated
Built-in Charger
Lightweight & Portable Design
Designed to Generally Confirm to IS 10656-1983
IEC 1010 CAT III 200V Safety Rating
For more insights, contact us:
Email: sales@industrywaala.com
Contact Number: +91 7377 01 7377
