Features:

   *ETCR2800C Multifunction Non-Contact Resistance Online Tester is our company devotes ourselves to Grounding resistance test technical research’s another new high-tech product for more than ten years. Detector adopts weather fastness material manufacture, temperature resistance, cold-resistant, corrosion prevention, fire prevention. Detector’s structure is rigorous and firm, against rain, dustproof, installation and use outdoors. Non-contact measurement, safe and reliable, Ease of installation. Grounding down lead is directly through the detector perforation, Will not affect lightning protection grounding effect and the normal operation of the facilities. Ensure high-accuracy, high stability and high reliability of long time on-line monitoring outdoors, underground mine and indoors. 

   *ETCR2800C Multifunction Non-Contact Resistance Online Tester is equipped with LCD display and alarm light, which can observe grounding resistance value at any times and set the alarm critical val. Alarm light will flash when measured value is beyond pre-set critical value. Detector applies to electric transmission line pole ground connection, underground mine device ground connection, meteorological lightning protection grounding connection, petrochemical engineering ground connection, communication ground connection, rail facility ground connection, building the warehouse ground connection, electrical equipment ground connection etc.. Detector provides power supply and RS485 signal interface, and standard MODBUS-RTU communication protocol，which user can do secondary development to realize remote monitoring. 

   *ETCR2800C’s LCD shows measured value directly, also sets up Detector’s alarm critical value, and possess audible and visual alarming function, which is very suitable to Independent installation and use when it needn’t form a network. 

      Technical Specifications:  

                                   Functions       

      Return circuit ground resistance, metallic return connection resistance, grounding conditions on-line monitoring

                               Power Supply       

      6VDC~9VDC, 50mA Max.

                               Resistance Range       

      0.01Ω~200Ω

                               Resolution       

      0.001Ω

                               Display Range       

      0.00Ω～500Ω

                               Accuracy       

      ±2%rdg±3dgt(20℃±5℃, below70%RH)

                               Grounding Wire Perforation Size       

      60mm×30mm, closed mode (60mm×4mm steel flat or external diameterФ30mm electric cable)

                               Overflow Indication       

                     When show value is beyond 500Ω, systems software and LCD show “OLΩ” sign.       

                               Connecting Line       

      A one meter long wire (5cores shielded wire)

                               Connection Identifier       

                     Red/brown---power supply input anode;       

               Black--- power supply input cathode.       

               Blue---RS485 signal anode;       

               Grey---RS485 signal cathode;       

               White--- analog grounding (power supply input cathode can connects with analog grounding by short circuit connection)       

                               Communication Protocol       

      RS485 standard MODBUS-RTU communication protocol

                               Alarm Indication       

      Detector Audible and visual alarm instructions

                               Alarm Setting       

      Detector panel setting

                               Data Display       

      4digits LCD direct indication

                               LCD Dimensions       

      47mm×28.5mm

                               Detector Dimensions       

      175mm×170mm×130mm

                               Installing Screw Hole Size       

      Φ8mm

                               Quality       

      Detector: 960g

                               Working Temperature and Humidity       

      -10℃~ 45℃; 20％RH ~ 90％RH

                               Humiture Error       

      Within 5%

                               Shift       

      Automatic shift

                               GND Interference Current       

      Prohibited

                               External Magnetic Field       

      ＜40A/m

                               External Electric Field       

      ＜1V/m

                               Single Measurement Of Time       

      About 0.5 second

                               Power Consumption       

      50mA Max.

                               Installation       

      Grounding wire through Detector centre bore

                               Level Of Protection       

      IP65

                               Installation Requirements       

      Avoid rain and water logging

                               Power Supply Mode       

      External power supply (Equipped by user)