Earth Resistance Meter
MRU-21 Earth Resistance Meter
2 in stock
Possible measurements:
- earth resistance measurment with 3-pole method,
- measurement of continuity of equipotential bondings and protective conductors with auto-zero function – with current 200 mA,
- resistance measurement using 2-pole method.
₨0
2 in stock
CompareWeight | 1.4 kg |
---|---|
Dimensions | 29 × 22 × 7 cm |
Measurement of earthing resistance
measurement range to IEC61557 – 5:
0,50 Ω…1,99 kΩ for Un=50 V;
0,68 Ω…1,99 kΩ for Un=25 V;
Range | Resolution | Accuracy |
0,00…9,99 Ω | 0,01 Ω | ±(2% m.v. + 3 digits) |
10,0…99,9 Ω | 0,1 Ω | |
100…999 Ω | 1 Ω | |
1,00k…1,99 kΩ | 0,01 kΩ |
• measurement current: under short circuit >20 mA,
• voltage on open terminals: selectable <25 V AC or <50 V AC,
• frequency of measurement current: 125 Hz
Measurement of interference voltage UN (RMS)
Range | Resolution | Accuracy |
0…100 V | 1 V | ±(2% m.v. + 3 digits) |
• measurement for DC and AC 45…65 Hz
Measurement of resistance of auxiliary electrodes RH i RS
Range | Resolution | Accuracy |
0…999 Ω | 1 Ω | ±(5% (RS+RE+RH) + 3 digits) |
1,00k…9,99 kΩ | 0,01 kΩ | |
10,0k…50,0 kΩ | 0,1 kΩ |
Measuremet of continuity of equipotential bondings and protective conductors
measurement range to IEC61557 – 4: 0,13 Ω…199 Ω
Range | Resolution | Accuracy |
0,00…9,99 Ω | 0,01 Ω | ±(2% m.v. + 3 digits) |
10,0…99,9 Ω | 0,1 Ω | |
100…199 Ω | 1 Ω |
- measuring method: technical 2-pole method,
- max. voltage on open terminals: 13 V,
- measurement current: under short circuit >200 mA,
- auto-zero function for measurement leads
Electric security:
- type of insulation: double, according to EN 61010 – 1and IEC 61557
- measurement category: CAT IV 300 V acc. to EN 61010 – 1
- protection class acc. to EN 60529: IP54
Rated operational conditions:
- operation temperature: -10…+55°C
- storage temperature: -20…+70°C
- humidity: 20…80%
Other technical data:
- LCD display: segment, backlit
- interface: USB,
- number of measurements carried out of set of batteries: > 1000 (5 Ω, 2 meas./min.)
- warranty: 2 years
- dimentions: 288 x 223×75 mm
- weigth: 1,4 kg
Based on 0 reviews
Be the first to review “MRU-21 Earth Resistance Meter”
-
Thermal Imagers
KT-650 Thermal Imager
- High resolution IR images up to 120,000 pixels (400x) and 307,200 pixels (640×480) alternative
- Visible light digital camera 5MP resolution with LED lamp provides sharp images regardless of lighting conditions
- 5 inch 720P high resolution LCD touch screen for better image clarity and easy operation
- Rotating LCD display up to 270″ for easy viewing angle
- Rotating lens detents up to 70″ for easy viewing angle
- 4x (10x for plus version) continuous zoom with auto/motorized focus
- Android based operation system with open platform for various APP developments and convinient program updating
- Powerful onboard analysis and reporting capabilities
- Multiple image presentation including IR visible, PIP and IR blending
- WiFi&Bluetooth wireless communication
- Optional high temperature range measuring up to 2000oC (3632oF) targeting electrical and industrial applications
- Optional 11o telephoto or 45o wide angle lens
SKU: n/a -
Multimeters
UT71C Intelligent Digital Multimeters
Product Features
1. Can set the interval forauto data recording
2. MAX/MIN/REL measurement mode
3. Peak hold
4. Analogue bar graph
5. Measure AC and DC in the same stall (AC+DC)
6. 4-20mA loop test
7. 45Hz-100kHz frequency response measurement
8. Double backlight
9. Misplug alarm
10. Auto and manual ranges selectable
11. USB interface available
12. Bluetooth connection with a cellphone for data monitoring
13. Temperature measurement mode,equipped with K-type point contact temperature probe
14. Complies with CE (European Union) and UL (United States) directives
SKU: n/a
There are no reviews yet.