Uni-T UT281E True RMS Flex Clamp Meter
UT281 Series Flex Clamp Meters: Accurate Measurements in Harsh Environments
The UT281 series flex clamp meters are designed to measure large currents in various harsh and hard-to-reach environments. Featuring a Rogowski flex coil, these meters can test up to 3000A AC current. Part of UNI-T’s Pro Line series, the UT281A and UT281C models meet IP54 and 2-meter drop-proof requirements, ensuring durability and reliability. With ease of operation, accurate readings, and stable performance, these flex clamps are ideal tools for professional electricians.
Key Features of the UT281 Series
- High Safety Rating: CAT IV 600V
- True RMS Measurement: Ensures accurate readings for all AC signals
- Certified Quality: ETL/Intertek certified 3rd edition CE
- Flexible Coil: Diameter 0.75cm, bending length 45.7cm
- Large LCD Display: Easy-to-read display with 3000 count
- Fast Refresh Rate: 3 times per second
- Manual Range Selection: Offers precise control
- Durability: 2-meter drop-proof and IP54 rating
- Inrush Current Measurement: Long press INRUSH key for 2 seconds
- Additional Features: Data hold, backlight, auto power off, low battery indication
Included Accessories
- 1 x UT281E Flex Clamp Meter
- Batteries
- Test Leads
- Point Contact Temperature Probe
- Blister Pack
- English User Manual
- 12-Month Warranty
Specifications Overview
| Specifications | Range | UT281A | UT281E |
|---|---|---|---|
| AC Current (A) | 30A/300A/3000A | ±(3%+5) | ±(3%+5) |
| Frequency Response | 45Hz~500Hz (sine wave) | √ | √ |
| Inrush Current | 0.5A~3000A (for reference) | √ | √ |
| AC Voltage (V) | 600V | - | ±(1.2%+3) |
| Resistance (Ω) | 60MΩ | - | ±(1.2%+3) |
| Frequency (Hz) | 20Hz~30kHz | - | ±(1%+2) |
Key Functionalities
- Range Selection: Manual for UT281A, Auto (manual available for current measurement) for UT281E
- Flex Coil Size: 10” (25.4cm) radius: 1.5” (3.8cm) for UT281A, 18” (45.7cm) radius: 3.1” (8cm) for UT281E
- Display Count: 3000 for UT281A, 6000 (3000 in current measurement) for UT281E
- Refresh Rate: 3 times per second
- True RMS: Yes
- Display Interface: Single for UT281A, Dual for UT281E
- Data Hold/Buzzer: Yes
- Auto Power Off: Yes
- Low Battery Indication: Yes
- Backlight/Function Selection: Yes
- 2m Drop Test: Yes
- IP Rating: IP54
General Characteristics
- Power Supply: 1.5V battery (R03) x 3
- Display Size: 32 x 34mm (1.8 inches)
- Product Color: Red and grey
- Net Weight: UT281A: 220g; UT281C: 236g; UT281E: 250g
- Product Size: UT281A: 300mm x 150mm x 55mm; UT281C: 350mm x 190mm x 55mm; UT281E: 325mm x 180mm x 30mm
- Standard Accessories: Batteries, PC software CD (UT281A), test leads (UT281E)
- Standard Individual Packing: Box, blister, English manual (UT281A/C only: German, French, Spanish optional)
The UT281 series flex clamp meters are robust, accurate, and easy-to-use tools, perfect for professional use in challenging environments. Whether for large current measurements or inrush current detection, the UT281 series provides reliable performance every time.
