The ZMK gate opening of the instrument is composed by two parts of the sensors and instrumentation. The sensor selection of imported rotary encoder to the format of the output of the spring mechanism SSI Gray Code data to the instrument. The instrument is handled by the SCM system calculation, intuitive and precise gate actual value, the opening percentage of the four-way switch alarm output, all the way analog and RS485 communication interface. Range, altitude alarm value, reversing front-end sensor can be set through the button. 
 Technical parameters: 
 Input Signal: SSI format of the rotary encoder 25 Gray code data 
 Measurement accuracy: the non-linearity <0.2% 
 Display: value, the opening percentage, 4-channel alarm status of the switch. 
 Digital output: 4-way relay is available to the user in the given range of settings 
 Contact capacity: 1A/250VAC  1A/30VDC 
 Analog output: all the way to 4 ~ 20mA 
 Means of communication: RS-485 MODBUS protocol. 
 Working environment: Temperature -10 ~ 650 ℃ Humidity <85% 
 Dimensions: panel mounted 160 × 80 × 250mm 
 Open air Dimensions: 152 × 76 mm 
 Power supply: 110V/220VDC or AC110/220V/50Hz