Ground Earth Resistance Tester Multifunction Digital Clamp Meter LCD Display Alarm Ammeter ST4100/ST4800 Precise Experiment(ST4800)

Specifications:Model: ST4100 / ST4800 (Optional)Material: ABSFunction: Grounding resistance test, circuit resistance test, leakage current testEnvironmental Temperature and Humidity: 23 ± 5, lower than 75%RHPower Supply: DC 6V, 4 * 1.5V AA dry battery (not included)Measurement Method: Mutual feeling wayResistance Range: 0.010-500 (ST4100), 0.010-1200 (ST4800)Resistance Resolution: 0.001Current Range: 0.00mA-30.0A (ST4800)Current Resolution: 0.01mAClip Size: 55mm x 32mmTime Clock Feature: Have+ ASynchronous Display: + AThe same screen displayDisplay Mode: 4-bit LCD display, black screen designLCD Size: 46mm x 36mmMeasure Time: 1 Time/secondData Storage: 500 groups, the "MEM" storage indication, flashing the "MEM" symbol indicating that the storage is fullData Access: The "MR" symbol indicates when reviewing the dataOverflow Display: OL symbol indication when overrange overflowDisturbed Test: Automatic identify the interference signal, indicating the "NOISE" symbol when the interference current is highAlarm Function: Send an alarm prompt when the measured value exceeds the alarm set pointCell Voltage: Battery power is displayed in real timeAuto Shut Off: It can be set to 5, 10, 15, 20 minutes, OFF, OFF means to cancel the automatic shutdown, the default is 5 minutesPower Dissipation: 115mA MaxWorking Temperature and Humidity: -10~40; lower than 80%RHStorage Temperature and Humidity: -20~60; lower than 70%RHInsulation Resistance: 20M above (Between the circuit and the housing 500V)Withstand Voltage: AC 3700V/rms (Between the circuit and the housing)<;40A/m<;1V/mSuitable For Safety Regulation: IEC61010-1(CAT III 300V, CAT IV 150V, degree of pollution 2); IEC61010-031; IEC61557-1 (earthing resistance)Item Size: 295 * 85 * 58mm / 11.61 * 3.35 * 2.28inItem Weight: 888g / 1.96lbPackage Weight: 1970g / 4.34lbPackage Size: 35 * 13 * 21cm / 13.78 * 5.12 * 8.27in

• Easy to Operate: When measuring ground system with loop, there is no need to disconnect the ground wire without auxiliary electrode, safer and faster
• Precision Clamp Head Design: Using precision iron core and winding, stable, precise and strong anti-interference. Clamp Size: 1.26"(32mm), large jaws with double insulation for extra safety
• Data Storage Function: 500 sets of measurement results can be recorded, the "MEM" storage indication, flashing the "MEM" symbol indicating that the storage is full.
• Multi Practical Functions: New design, panel operation with 6 buttons, better performance. With real-time clock, data storage, data access, alarm, automatic shutdown and other functions
• Widely Used: It is suitable for measuring all kinds of telecommunications, electric power, meteorology, machine room, oil field, power distribution lines, tower transmission lines, gas stations, factory grounding network, rob and other grounding resistance