Hongrun Single-Channel Digital Display Controller measures temperature, pressure, liquid level, water level, rotational speed, linear speed, etc.

Main Technical Parameters

Input Signal Thermocouple: Standard thermocouples──B, S, K, E, J, T, WRe3-25, etc.

Resistance: Standard RTDs──Pt100, Cu100, Cu50, BA1, BA2, etc., or remote pressure resistance

Current: 0～10mA, 4～20mA, 0～20mA, 0～10mA square root, 4～20mA square root, etc.─Input impedance ≤250Ω

Voltage: 0～5V, 1～5V, 0～5V square root, 1～5V square root, etc.──Input impedance ≥250kΩ

Measuring range -1999～9999 digits

Measuring accuracy 0.5%FS±1 digit or 0.2%FS±1 digit

Resolution 1, 0.1, 0.01, or 0.001 digit

Display method -1999～9999 measured value display

-1999～9999 set value display

0～100% measured value bar graph display

LED operating status display

Bar graph accuracy Bar graph display accuracy 1%

Output signal DC 0～10mA (load resistance ≤750Ω)

DC 4～20mA (load resistance ≤500Ω)

DC 0～5V  (output resistance ≤250Ω)

DC 1～5V  (output resistance ≤250Ω)

Alarm output Relay alarm output─Relay ON/OFF with hysteresis,

Contact capacity: AC220V/1A; DC24V/3A (resistive load)

Alarm accuracy ±1 digit

Communication output Interface method─Standard serial bidirectional communication interface: Optically isolated RS-485, RS-232, etc.

Baud rate─1200～9600bps internally free setting  Using standard MODBUS RTU communication protocol

Power supply output DC24V, load current ≤30mA

Temperature compensation 0～50℃ digital automatic temperature compensation

Parameter setting Panel tactile button digital setting

Parameter setting values saved after power off

Parameter setting values password locked

Protection method Input circuit break alarm (when thermocouple or resistance input), relay output status LED indication

Input over/under range alarm

Power under-voltage auto reset

Operating abnormality auto reset (Watch Dog)

Online communication Communication is two-wire, three-wire (e.g., RS-485, RS-232, etc.), or can be customized per user requirements. Baud rate 1200～9600bps can be freely set via internal parameters. Interface and host use optical isolation to enhance system reliability and data security. RS-485 communication distance up to 1 km. Host computer can collect various signals and data to form energy management and control systems. With Kunrui industrial configuration platform software, multiple instruments can communicate with one or multiple computers. System uses master-slave communication mode, easily forming various energy management and control systems. The entire control loop requires only one two (three)-core cable to communicate with the host computer. Host computer can call user-set device numbers, access on-site data of each instrument at any time, and set internal parameters of the instruments.

Operating environment Ambient temperature 0～50℃

Relative humidity ≤85%RH        Avoid strong corrosive gases

Power supply voltage AC220V%(50Hz±2Hz) linear power supply

AC90～265V─switching power supply

DC24V±2V─switching power supply

Power consumption ≤5W (AC220V linear power supply)

≤4W (AC90～265V switching power supply)

≤4W (DC24V switching power supply)

Structure Standard snap-in type