Explosion-proof instrument

The basic function
High - speed high performance ARM processor, 32-bit precision floating-point operation.
Industrial grade high reliable isolation power, 24V DC/220V AC wide input, multiple protection.
The change table does not need to be re-calibrated, only the parameters of the original instrument can be used.
It is completely isolated from 0-5v / 0-10v / 4-20ma analog output, and can be calibrated in multi-mode.
Total isolation RS485 and RS232 double serial port high-speed output; Standard communication protocol (modbus-rtu)
External large screen current loop output interface.
The isolation switch is 3 out of 3 control.
The sensor signal acquisition and conversion circuit adds patent technology, which can be self-diagnosis and self-protection, and it is more comfortable to use.
Technical parameters
Accuracy: level 3, n=3000.
Input signal range: -15mv ~ +15mV.
Nonlinearity: less than 0.01%F.S.
Sensor connection number: 1 ~ 4 only 350 Ω sensor
For bridge power supply: DC: 5V.
Sensor connection: 6 wire system, long - term automatic compensation.
Display: single row of 7 LED, height 0.8 inch,7 status indicator.
Value: 1/2/5/10/20/50/100.
Keyboard: use 6 explosion-proof point action buttons.
Large screen display interface: serial output mode, 20mA constant current source signal.
Communication interface: RS232, RS485. Baud rate of 1200 ~ 9600.
Printing interface: with serial port, can connect serial printer.
Output: contact capacity AC220V/DC24V; 0.5 A
External control input: switch contact (closed when effective)
Power supply: AC220V or DC 12 ~ 24V.
Use temperature and humidity: 0 ~ 40; 85% RH or less
Storage temperature: - 20 ~ 50 ℃
Size: installation size: 335 x 270mm.
External dimensions: 300 x 300 x 150mm.