1 functional uses
The KS series gate plan is made according to the national standard GB9359-88 "the general technical conditions of hydrological instruments" and the relevant technical standards.
The instrument automatically by the cable collecting device absolute value rotation encoder, or other forms of coupler and other components, is independent of the gate opening measuring instrument, suitable for rivers, lakes and reservoirs, locks, hydropower stations and water supply and drainage engineering of the gate opening at the same time, this series of measurements; instruments and with a gate opening close machine electric control device, display connected display and control system; and the computer system connected to form a water level of comprehensive measurement and control system of station, gate, hydropower; connection and communication machine, digital terminal equipment as hydrological automatic monitoring system, hydrological telemetry system using satellite.
This series of instruments can be used to measure the opening and data transmission of plate brake, arc brake and man gate.

2 working principle
KS series digital gate meter consists of opening sensor, automatic cable collection device or other forms of coupler, display, controller, transmission cable, RS485 digital communication interface and so on. The gate movement through the coupler to drive the sensor output and can rotate, gate position corresponding to the gray code encoding signal.
The resolution of KS series gate opening sensor is 1cm. The working process is as follows: when the gate for vertical movement or rotation, coupler is connected with gate is synchronous movement, then drive the coupler sensor corresponding to the rotation of the spindle, the electrical socket output of the sensor and the rotating position of the gate position encoding signal (gray). For the flat gate, the output signal by hardware or software for decoding, display and observation; for an arc or herringbone gate, by electrical display or computer on the gray automatic conversion and digital processing output.

3 technical parameters
A measurement range: 0-10m;
B resolution: 1cm;
C measurement accuracy: + 2cm or 0.2%F * S.
Electrical parameters
A output code: gray 10bit;
B transmission form: (1) on-off contact: 0.1A/24VDC;
(2) OC gate: 30mA/30VDC.
3.1 interface (optional)
(1) RS485 interface: MODBUS protocol or other.
(2) analog signal output from 4 to 20mA.
3.2 use environment
A environmental temperature: -25 ~ 85 c;
B relative humidity: <90% (40 C);
C size: 196 x 210 or 100 x 108 x 107mm;
D power supply voltage: 12 ~ 24VDC.
3.3 electric display (optional)