Paperless Recorders

I. Paperless recorder overview

     The LU-C3000 series color LCD process control paperless recorder supports one to eight channels of programmable PID control and up to one hundred program control curve segments. The instrument uses full-switching universal inputs and can accept thermocouple, RTD, standard current and other signals, and can provide transmitter supply output. A micro printer or color inkjet printer can be connected directly so that multiple curves can be printed at the same time, and the real-time and historical data and curves for a user-specified time period can be printed; through the RS232 communication interface it can be connected to a portable computer or PDA (personal digital assistant) to read the historical data of the instrument directly, which is then transferred to the computer, where the data management software can analyze, archive, print and process the acquired data. Through the RS485 communication interface it can be connected to professional configuration software such as KingView and MCGS to form a real-time monitoring system. Modern USB interface technology is also adopted to store data directly on a USB flash drive, extending the recording time.
 The paperless recorder has powerful display functions: real-time trend curve display, large-character digital display, historical curve recall, out-of-limit alarm, alarm status display, and intelligent automatic playback of historical trends, making it very convenient to locate alarm points; a positioning playback function is also available for directly querying the data of a year, month, day, hour, minute and second, quickly and conveniently.

II. Main technical specifications of the paperless recorder

Display: 320×240 high-resolution graphic blue-and-white monochrome LCD
Basic error: ±(0.2%F.S±1) digit
Input specifications: standard voltage: (0-5)V, (1-5)V
Standard current: (0-10)mA, (4-20)mA
Thermocouple: K, S, B, T, E, J, WRe325, N
RTD: Pt100, Cu50, Cu100
Special input: R, WRe526, mV signal, others (specify when ordering)
Output specifications: switching output: relay contact output (resistive 250VAC/0.8A or 250VAC/3A)
          Linear current output: 0-10 mA, 4-20 mA, 0-20 mA (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/512M, USB flash drive/1G, USB flash drive/2G
Five to one hundred control curve segments
Recording time: 8-channel recording
Without USB flash drive     2.9 days/8 channels (recording interval 1 s) ~ 3.7 years/8 channels (recording interval 4 min)
With USB flash drive/512M  512/4×[2.9 days/8 channels (recording interval 1 s) ~ 3.7 years/8 channels (recording interval 4 min)]
With USB flash drive/1G    1G/4×[2.9 days/8 channels (recording interval 1 s) ~ 3.7 years/8 channels (recording interval 4 min)]
Data recording interval setting range: 1 s to 4 min; the intervals of the 16 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, 3, 5 and 7 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±1HZ, power consumption 12W
Ambient temperature: 0~45°C
Ambient humidity: 0~85% RH