Ningbo GEANTEC Electronic Co.,Ltd

1. Overview GEANTEC's wireless load displacement (dynamometer card) sensor is designed for dynamometer card testing of pumping unit wells. It is a high-performance wireless sensor product integrating load and acceleration displacement measurement, a low-power embedded microcontroller, and low-power wireless digital communication technology. It is one of the important front-end acquisition devices for the construction of a digital oilfield oil and gas production Internet of Things. It achieves remote measurement of dynamometer card data characterizing the operating conditions of pumping unit wells by periodically and synchronously measuring the load at the pumping unit suspension point and the displacement of the polished rod online, and transmitting the data remotely through a local wireless data communication network. 2. Technical Specifications 1) Operating Environment:  T4 temperature, -40～70℃; relative humidity, 0～100%RH; atmospheric pressure, 86～106 kPa;  Vibration, (10～500)Hz, peak acceleration <19.6m/s2;  AC external magnetic field ≤400A/m. 2) Power Supply: Lithium-thionyl chloride high-energy disposable battery, 3.6V/38Ah. 3) Measurement Performance:  Load, range: 0～150KN, accuracy: 0.5%FS, overload capacity: ≥1.5FS; stability: ±0.1%FS/year;  Acceleration-displacement, range: 1～12m, accuracy: 2.0% FS; stroke rate: minimum 1 stroke/minute, accuracy: 1%;  Maximum number of dynamometer card acquisition points: 255, acquisition cycle ≥10 minutes, configurable; well start/stop alarm. 4) Wireless Communication:  Local wireless: transmission distance (open line of sight) ≥300m; RF transmission power ≤10mW; communication protocol, ZigBee PRO 2007; customizable according to requirements.  Remote communication: GPRS 5) Explosion-proof marking: Ex ib II C T4 Gb, explosion-proof certificate number: CE18.2244X; protection level: IP68. 6) External dimensions: Length × Width × Height = 186 × 105 × 79 mm (maximum); U-shaped opening size: standard 40 mm, customizable. 7) Weight: 4.6 kg.