The Primary current sensor uses the same sensor technology as the original Rogowski coil. The True RMS inductive sensor does not use magnetic materials. The opening of the sensor is electronically closed and external currents are electronically rejected. The accuracy, external current reject, and range of currents measured by the patented amp sensor substantially exceed the performance of the best clamp-on sensors. The key feature of the unit is the ability to leave it deployed on the line to record readings every 15 minutes for 90+ days. It easily attaches to the line with a standard insulating bar. Once on the line, it immediately begins to collect and record the primary current on the line. The Primary current sensor is equipped with a 433M wireless port for communicating the recorded data into the userâ??s PC. The data is downloaded through GF2018S PC-Link Software, which allows the user to download, view and query the data stored on the Primary current recorder. The housing of the Primary current sensor is made of ABS+PC and is built to operate safely, even in severe utility environments. It is resistant to shock, waterproof and resistant to flame. It also operates within a wide temperature range. The Primary current recorder has a screw insulation bar of installation, which allows it to hang on the line securely in all weather conditions. PC-Link Software is a user-friendly software interface that allows the user to download, view, graph and export data from the Primary current recorder into Microsoft Excel. The data directly transfers from the Primary current recorder into Excel through an 433M Port. PARAMETERS Basic parametersã?? Recording ammeter kit 3 wireless current sensors (GF2018A, GF2018B, GF2018C) 433 HHT(handheld terminal) or 433M wireless data reader(GF2018R) PC-LinkSoftware software(GF2018S) Carrying case Data recording interval 1min, 5min, 10min,15min, 30min; Time can be set from 1 second to 60 minutes Communication distance(wireless) Max 100m Communication 433M, 868M or 915M (option) Installation Installation with electricity; Disassemble with electricity Battery 3.6 volt lithium battery,9000mAh; Battery can be replaced Software requirements PC-Linksoftware & microsoft Excel Processor 100 MHz or higher (200 MHz or higher recommended) RAM 32 MB, 64M recommended Drive space 15 MB to load software, 10 MB of operating Space Use of position Outdoor or indoor Electrical parameters Range of operation Voltage 69kV,35kV,20KV, 10kV, 6kV, 0.38kV Current 0 to 400A; 0 to 800A; 0 to 1500A; 0 to 3500A; Sensor opening Up to 3.3 cm Resolution Amps 1 to 99.9A 0.1A 100 to 300A 1A Amps accuracy ±1% of reading plus 2 counts Frequency 60Hz (57-63 Hz) or 50Hz (47-53 Hz) models available Mechanical parameters Weight (kg) 0.48 Carrying case(kg) 6.5 Environmental conditions Operating temperature -40C to 60C