Voltage: 0-5V, 1-5V, 0-10V (customizable), √1-5V;
Measurement accuracy ：up to ±0.2% FS ±1 digit;
Low power consumption: ≤ 5W;
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Specification
| Measurement input | |
| Input signal | Current: 0-20mA, 0-10mA, 4-20mA, √0-10mA,√4-20mA ; Input impedance: ≤100Ω ; Maximum limit of input current: ≤ 30mA |
| Voltage: 0-5V, 1-5V, 0-10V (customized) | |
| Thermal resistance: Pt100, Cu50, Cu53,Cu100, BA1, BA2 | |
| Linear resistance: 0-400Ω | |
| Thermocouple: B, S, K, E, T, J, R, N, F2,Wre3-25, Wre5-26 | |
| Frequency signal: range: 0-10KHz; wave shape: rectangular, sine wave, square wave | |
| Output | |
| Output signal | Analog output: 4-20mA (load resistance ≤ 480Ω), 0-20mA (load resistance ≤ 480Ω) |
| 0-10mA (load resistance ≤ 960Ω), 1-5V (load resistance ≥ 250KΩ) | |
| 0-5V (load resistance ≥ 250KΩ), 0-10V (load resistance ≥ 4KΩ) (customized) | |
| Alarm output: relay control output: AC220V/2A, DC24V/2A (resistive load) | |
| Feed output: DC24V±1, load current ≤ 50mA | |
| Communication output: RS485/RS232, 1200-9600bps, Protocol: MODBUS RTU. Communication distance: 1Km for RS-485 and 15m for RS-232. | |
| Comprehensive parameters | |
| Measurement precision | 0.2%FS±1d |
| Setting mode | Light touch control panel for setting parameter, which will be stored permanently even in case of power failure, and can be locked & protected with password. |
| Display mode | 3.5” matrix 128*64 LCD screen with backlight (black characters on white screen). Display pages include Digits, Curves, Bar graphs, and so on. Pages switch conveniently on the panel. History data can be searched, and time scale of curves is changed by operating proper keys on the panel |
| Record interval | 9 options for your choice: 1s, 2s, 4s, 6s, 15s, 30s, 60s, 120s, and 240s |
| Storage time | 3 days (record interval of 1s) – 720 days(record interval of 240s) |
| Printer interface: RS-232C; Serial-interface printer: SP-A40SH | |
| Operating environment | Ambient temperature: 0-50℃; relative humidity: ≤ 85RH; isolated from strongly corrosive gas |
| Power supply | AC 100-240V (switch power), 50/60HZ; DC 12-36V(switch power) |
| Power consumption | ≤ 5W |
| Structure | Standard panel mounted instrument structure |
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Introduction
The LCD Flow Totalizer is designed for accurate steam flow measurement and trade settlement in regional central heating systems. Based on a 32-bit ARM processor with high-speed A/D and large memory, it supports up to 720 days of data recording and automatically identifies saturated or superheated steam. Compatible with various flow sensors like orifice plate, V-cone, and vortex meters, it offers USB data export, process monitoring, and volume control, with reliable EMC performance, anti-theft, and power-failure protection.
