Paperless Recorders

    The LU-C1000 monochrome LCD process control paperless recorder integrates recording and control in one unit and provides full-switching universal inputs for flow, thermocouple, RTD, standard voltage and standard current signals; output modes include PID control, on/off control, auto-tuning control and manual control. It can accept up to 2 PID control loops, 2 flow inputs or 4 signal inputs, and each control board has independent signal input, main output and alarm output, with complete isolation between input and output. Programmable PID control provides up to 100 program control curve segments. Transmitter supply output is available. The modular design makes configuration more flexible, and different acquisition boards can be used at the same time; the power supply and the acquisition boards are designed in separate layers, with complete electrical isolation between input and output, greatly improving the reliability of the instrument. It features a flexible data storage mode; the recording storage space is dynamically adjustable, and with USB interface technology data can be copied directly to a USB flash drive, extending the recording time. A micro printer can be connected directly to print the data and curves for a user-specified time period; through the RS232 communication interface it can be connected to a portable computer or PDA (personal digital assistant) to upload the real-time/historical data of the instrument directly, and the data can be analyzed, archived and printed by means of the host computer data management software or the USB flash drive utility software; through the RS485 communication interface it can also be connected to professional configuration software such as KingView and MCGS to form a real-time monitoring system.

    Powerful display functions: extra-large digital display, high-precision bar graph display, real-time trend curve display, historical curve recall, alarm query, alarm status display and more; all curve screens support zooming, and intelligent automatic playback of historical trends with time and amplitude scaling is provided, making it very convenient to locate alarm points; a positioning playback function is also available for directly querying data of a specific year, month, day, hour, minute and second, quickly and conveniently; a flow totalization function allows the flow total of any period to be queried.

    It also provides a bilingual Chinese/English display interface.

Display: 128×64 monochrome LCD
Basic error: ±(0.2%F.S±1) digit
Input specifications:
          Standard voltage: 0-5V, 1-5V
          Standard current: 0-10mA, 4-20mA
          Thermocouple: K, S, B, T, E, J, WRe325, N
          RTD: Pt100, Cu50, Cu100
          Special input: R, WRe526, mV signal, others
Output specifications:
          Switching output: relay contact output (resistive 250VAC/0.8A or 250VAC/3A)
          Linear current output 0-10mA, 4-20mA, 0-20mA (freely set by software)
          Linear voltage output 0-5V, 1-5V, 0-10V (specify when ordering)
          SCR zero-crossing trigger
          Solid state relay trigger (12V/50mA)
          Transmitter supply     DC12V/50mA
                       DC24V/50mA
                       DC5V/50mA
          Transmitter output 4-20 mA (load <650Ω), 1-5V
                   0-10 mA (load <1000Ω), 0-5V
          Communication interface RS232 or RS485
          Storage medium USB flash drive/2G
Five to one hundred control curve segments
Recording time: 4-channel recording
          Without USB flash drive    5.8 days/4 channels (recording interval 1 s) -- 15 years/channel (recording interval 4 min)
          With USB flash drive/2G  2G/4×[5.8 days/4 channels (recording interval 1 s) -- 15 years/channel (recording interval 4 min)]
          Data recording interval setting range: 1 s to 4 min; the intervals of the 4 channels can be set separately.
Storage time: T = storage capacity / sum of the reciprocals of the recording intervals of all enabled channels; when the storage is empty, the storage capacity, i.e. the total number of stored records, is 4000×504.
          For example, when the storage is empty and channels 1, 2, 3 and 4 are enabled with recording intervals of 1 s, 5 s, 10 s and 20 s respectively,
          then T = 4000×504/(1/1+1/5+1/10+1/20) = 1493333 s = 414.8 h = 17.28 days
Power failure protection: setting parameters and historical data are stored in FLASH MEMORY, so data is retained permanently after power failure; a hardware clock is used and keeps accurate time even after power loss.
Power supply: switching power supply 85VAC-264VAC, 50Hz±1%, power consumption 8W
Ambient temperature: 0-45°C
Ambient humidity: 0-85% RH