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
CompareEarth Resistance Meter
| Weight | 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
Brand
SONEL
Based on 0 reviews
Be the first to review “MRU-21 Earth Resistance Meter”
-
LCR Meter
UT622A Digital Inductance LCR Meter
Specifications UT622A UT622C UT622E Certificates CE, RoHS Test frequency 100Hz, 120Hz, 1kHz, 10kHz 100Hz, 120Hz, 1kHz, 10kHz, 100kHz 100Hz, 120Hz, 1kHz, 10kHz, 100kHz Test signal level 0.1Vrms, 0.3Vrms, 1Vrms Output impedance 100Ω Measurement parameters Primary: L/C/R/Z
Secondary: D/Q/θ/ESRPrimary: L/C/R/Z/DCR Secondary: D/Q/θ/ESR Auto LCR √ Test terminals Three-terminal test jacks, five-terminal test sockets Test rate Fast (20 times/s), medium (5 times/s), or slow (2 times/s) DCR test rate — — Fast (20 times/s), medium (5 times/s), or slow (2 times/s) Ranging mode Auto/hold Tolerance range 1%~20% Testing circuit mode Series/parallel mode Clearing correction Open/short circuit Fuse of test ports 0.1A/250V Communication interface Mini-USB LED alarm for tolerance
(pass: green; fail: red)√ √ √ Display range Maximum reading 99999 Minimum resolution 0.0001 Maximum accuracy 0.001 L 0.00μH~99.999H C 0.00pF~99.999mF Z/R 0.0000Ω~9.9999MΩ ESR 0.0000Ω~999.99Ω D 0.0000~9.9999 Q 0.0000~99999 θ -179.9°~179.9° DCR — — 0.01mΩ–20.000MΩ Temperature coefficient 0.1× (specified accuracy) /°C (0°C~18°C or 28°C~40°C) General Characteristics Power 3.7V 1800mAh lithium polymer battery; Input: 220V (1±10%), 50Hz (1±5%); Mini-USB output: 5V, 1A Display 2.8′ TFT LCD 320X240 Product net weight 420g Product size 93mm x 192mm x 44mm Standard accessories Short circuit board (UTR-001), USB cable, 5V 1A power adapter, Four-terminal Kelvin testleads (UTR-L100k-H) (UT622C/E), Alligator clip test leads with rubber plugs (UTR-002)(UT622A), English manual SKU: n/a -
Wire & Cable Testers
UT681HDMI Cable Tester
1. Tests HDMI/MINI-HDMI cables
2. Fastline collocation type: A with A, A with C and C with C
3. Checks circuit breakage, short circuit, cross circuit and the missing wire
4. 20 visible LED indicators
5. Can toggle between scan and full display test modes
6. Single key operation
7. Manual/auto power off (after 10-minute inactivity)
8. Low battery indication
9. CE certification
10. Power supplied by 9V layer-built battery
SKU: n/a -
IR Resolution
UNI-T UTi320E High IR Resolution 320×240 Professional Handheld Thermal Imager with PC,WiFi and App Connect Support Data Analysis and Real Time Display
IR ResolutionUNI-T UTi320E High IR Resolution 320×240 Professional Handheld Thermal Imager with PC,WiFi and App Connect Support Data Analysis and Real Time Display
Screen Display 3.5″IPS Temeperature Range -40°~400° IR Resolution(Pixels) 320×240 Visible Camera Resolution 2MP Field of View(FOV) 56°x 42° Spatial Resolution(IFOV) 3mrad Frame Rate 9Hz Thermal Sensitivity(NETD) 65mK Measurement Accuracy ±2° or ±2%
whichever is greaterEmissivity 0.01-0.99 Adjustable Spectral Range 8~14μm Foucs Foucs Free Digital Zoom 2x, 4x Palattes 7(Iron, Rainbow, White Hot, Red Hot, Black Hot, Lava, Rainbow HC) Display Modes Thermal,Visible,Fusion,PIP Mesurement Mode Center Pot,High/Low Temp Pot,ROI Temperature Analysis (Point 5 /Line 1 /Area 6 ) total 6 tools Battery Li-ion battery pack 5200mAh Battery Type Replaceable Battery Life ≥ 4hours Charging Time ≤5Hours Communication interface Type-C IP Rating IP54 Drop Proof 2m Functions Flashlight √ Tripod Hole √ Auto tracking of High/Low Temperature √ Auto Alarm of High/Low Temperature √ Image Capture √ Video Recording × Voice Recording × RIO(Eliminates Interference) √ Isotherm √ PC Real Time Image Transmisstion √ PC Analysis Software √ Wifi Photo Download √ Wifi Real Time Display × Bluetooth × Mobile APP √ GPS × Laser/Distance Measurement × SKU: n/a
Related products
-
Earth Ground Resistance Testers
MRU-30 Earth Resistance and Resistivity Meter
-
It allows to take the measurements of:
- earthing resistance using auxiliary electrodes,
- earthing resistance using auxiliary electrodes and clamp (for measurements of multiple earthing),
- earthing resistance using double clamps for measuring multiple earthing without underground connections.
- ground resistivity (Wenner method),
- continuity of equipotential bondings and protective
- conductors (meeting the requirements IEC 60364) with auto-zero function – with current 200mA.
Additionally:
- measurement of resistance of auxiliary electrodes RS and RH,
- measurement of interference voltage,
- measurement in the presence of interference voltage in the power network
- with frequency 50Hz, 60Hz,
- selection of maximum measuring voltage (25V and 50V),
- introducing the distance between the electrodes for the resistivity in metres (m) and feet (ft),
- memory of 990 measurements (10 banks of 99 cells each),
- calibration of clamp used,
- data transmission to the computer (USB),
- indication of battery state.
SKU: n/a -
-
Earth Ground Resistance Testers
MRU-10 Earth Resistance Meter
It allows to:
- measure earthing resistance using auxiliary electrodes,
- measurement of resistance of auxiliary electrodes RS and RH,
- measurement of interference voltage,
- measurement in the presence of interference voltage in the power network with frequency 50 Hz and 60 Hz,
- selection of maximum measuring voltage (25 V and 50 V),
- indication of battery state.
SKU: n/a -
Earth Ground Resistance Testers
UT521 Earth Groud Testers
UT520 series earth resistance tester hasthe functions of backlight display, low battery display, data hold, datastorage, auto power off and power saving. It can not only be used for accurate three-wiremeasurement but also simple two-wire measurement.
It is applicable to measuring the earthresistance of all kinds of electrical power system, electrical equipment and anti-thunderequipment. It can also measure the earth voltage. It is applicable to testingoperating earth systems of smelting, communication, manufacture, fossil oil,national defense, electricity, chemical industry and construction.
SKU: n/a
There are no reviews yet.