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Remote transmission digital display meter
·Specialized integrated instrument chips have more reliable anti-interference and stability. ·Universal signal input, can be matched with commonly use
Product details
Main Features
·Specialized integrated instrument chips have more reliable anti-interference and stability.
·Universal signal input, can be matched with commonly used thermal signals through menu settings.
·The display range, transmission output range, alarm value, and alarm mode can be modified online.
·The anti-interference mode combining software and hardware effectively suppresses on-site interference signals.
·Digital calibration technology, without adjustable components such as potentiometers.
·Automatic compensation for thermocouple cold junction temperature and thermal resistance lead resistance.
·Externally accessible two or threeThe wired transmitter provides power distribution function.
·Transmission output function with optoelectronic isolation.
·Equipped with light column simulation display function.
·Equipped with RS232 or RS485 communication function, it can form a data acquisition system and control system by connecting with the upper computer using the standard MODBUS RTU protocol.
Characteristics |
Display range: -1999 to 9999. |
| Display method: Display measurement values (PV) using a single row of four digit LEDs, and simulate the percentage of measurement values using a monochromatic light column. | |
| Measurement accuracy: ± 0.2% FS ± 1 character or 0.5% FS ± 1 character; ± 0.1% FS ± 1 word (requires special customization). | |
| Resolution: ± 1 word. | |
| Alarm mode: 1-4 alarm control (lower limit LL, lower limit L, upper limit H, upper limit HH) LED indication. | |
| Alarm accuracy: ± 1 word. | |
| Protection method: Input circuit disconnection, input signal over/under range alarm; Input circuit disconnection, transmission output hold/maximum/minimum optional | |
| Setting method: Panel touch button numerical setting, set value permanently saved after power-off. | |
input signal |
DC current: 0-10mA, 0-20mA, 4-20mA, 0-10mA square root, 4-20mA square root. |
| DC voltage: 0-20mV, 0-100mV, 0-5V, 1-5V, 0-5V square root, 1-5V square root, -5V to 5V; -10V~10V, 0~10V (to be specified when ordering, incompatible with other signals). | |
| Thermocouples: K, E, S, B, J, T, R, WRe3-25; The automatic compensation range for cold end temperature is 0-50 ℃, with a compensation accuracy of ± 1 ℃. | |
| Thermal resistance: Pt100, Cu100, Cu50, BA2, BA1; The compensation range for lead resistance is ≤ 15 Ω. | |
| Linear resistance: 0-400 ΩRemote transmission resistance: 30-350 Ω (remote transmission pressure gauge) | |
| Input impedance: current signal Ri ≥ 500K Ω; voltage signal Ri ≤ 100 Ω. | |
output signal |
Output accuracy: Same as measurement accuracy. |
| Voltage signal: DC 0-5V; DC 1～5V， Load impedance R ≥ 250K Ω, otherwise the output accuracy after connecting the instrument cannot be guaranteed. | |
| Current signal: DC 4-20mA, load impedance R ≤ 500 Ω; DC 0-10mA, load impedance R ≤ 750 Ω. | |
| Distribution output: DC24 ± 1V, load current ≤ 30mA. | |
| Alarm output: Relay control output - Relay ON/OFF return difference | |
| Communication output: baud rate -2400, 4800, 9600bps, freely set internally, using MODBUS RTU communication protocol. | |
Usage environment |
Environmental temperature: -10~55 ℃; Environmental humidity: 10-90% RH. |
| AC power supply: 90-265V (switching power supply), frequency: 50Hz/60Hz;DC power supply: 24V ± 2V (switch mode power supply). | |
| Insulation impedance: ≥ 100M Ω between input/output/power/communication. | |
| Voltage resistance: Input/output/power/communication to each other ≥ 1000V.AC for 1 minute. | |
Power consumption |
<5W |
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