68R-Data-Logger
1. Product Performance
1.1 Measurement and Input Performance
- Channel Configuration: 6 universal analog input channels, available in isolated and non-isolated types, flexibly accessing various industrial signals, meeting multi-parameter measurement needs in small and medium-sized industrial scenarios.
- Signal Compatibility: Covers current (4-20mA, 0-20mA, etc.), voltage (0-5V, 1-5V, etc.), thermocouple (12 types including K/S/B/J), and thermal resistance (4 types including Pt100/Cu50). Frequency signal is customizable, adapting to mainstream industrial sensors.
- Measurement Accuracy: Full signal type measurement accuracy up to ±0.2%F.S.; thermocouple measurement error ±2℃~±5℃ (depending on type), thermal resistance error ±0.5℃, sampling period 1 second, enabling accurate and efficient data collection.
- Signal Processing: Supports 0.0-9.9s filtering to mitigate signal mutations and suppress interference spikes; 0.0%-9.9% low-signal cutoff function to zero out signals below the set ratio, improving data stability.
1.2 Storage and Recording Performance
- Storage Capacity: 128Mb memory, capable of storing 900,000 historical data records with cyclic overwrite; simultaneously records 256 alarm records, 256 power failure records, and 256 operation logs, ensuring complete data traceability for easy equipment maintenance.
- Recording Interval: 12 optional levels from 1 second to 1 hour, independent of the number of channels. With 1-second interval, it can record continuously for 10 days; the maximum recording duration is 6000 days with 1-hour interval, adapting to different recording requirements.
- Data Security: Historical data is not lost after power failure; modifying recording interval or channel parameters will not cause data confusion. When channel signal or range is changed, historical data automatically adapts to the new range, ensuring data continuity.
1.3 Output and Communication Performance
- Output Functions: 6 normally open relay alarm outputs (250VAC 3A/30VDC 3A resistive load), 2 4-20mA transmission outputs (accuracy 0.2%, load ≤750Ω); 2 channels of 24VDC power distribution (30mA per channel, total output ≤60mA), supporting two-wire instrument power supply.
- Communication Interfaces: Standard 1 RS485 communication interface (Modbus RTU protocol), USB2.0 interface supporting large-capacity U disk data transfer; optional micro printer interface (3.3V TTL level) to meet on-site data printing needs.
- Communication Parameters: RS485 baud rate optional from 9600-115200, parity modes including no parity/odd parity/even parity, device address 1-247 adjustable, default floating-point format 2143, adapting to industrial communication networks.
1.4 Environmental and Structural Performance
- Environmental Adaptability: Operating temperature -10~60℃, humidity 0~85%RH (non-condensing); isolated type with power supply burst pulse anti-interference 2000V, signal burst pulse 1000V, ESD contact discharge 4000V/air discharge 8000V, ensuring strong stability.
- Structural Specifications: 4-inch color LCD screen (800×480 resolution), panel size 160×80mm, cutout size 152×76mm, panel-mounted installation, panel protection class IP40, weight 450g, compact size suitable for narrow installation spaces.
- Power Supply Guarantee: Supports AC100-240V 50Hz or DC24VDC±10% power supply, maximum power 10W, wide voltage adaptation range, with reverse connection protection for safe use.
2. Core Selling Points
2.1 Compact Size + Universal Input for Small and Medium-Sized Scenarios
- Compact 160×80mm panel design, weight only 450g, saving installation space, especially suitable for small and medium-sized industrial equipment, laboratories and other scenarios; 6 universal input channels without additional modules, accessing multiple signals in one stop, reducing configuration costs.
- Supports Chinese tag configuration (16 characters), 0-3 adjustable decimal places, optional open-circuit processing (#/maximum/minimum/hold), with flexible parameter configuration meeting different monitoring needs.
2.2 Multi-Form Display + Convenient Operation for High Usability
- 4-inch high-definition color screen supports 4 display forms (digital display, bar graph, real-time curve, historical curve) for intuitive data trends; simple panel button operation: left/right keys to switch screens, up/down keys to adjust parameters, confirm key to execute functions, combined with Chinese menu, enabling novices to get started quickly.
- Built-in Chinese/English bilingual free switching, initial password 0000, supporting configuration export/import and batch copying of channel parameters, reducing repetitive operations and improving configuration efficiency.
2.3 Flexible Data Transfer and Printing for Strong Practicality
- USB interface supports manual transfer of full/partial data, and daily scheduled automatic backup can be set. Files are named "date + serial number" and stored in the PLR folder of the U disk, which can be opened and analyzed via upper computer software (PLR.EXE) with convenient operation.
- Optional micro printer interface, supporting automatic/manual printing. Printing modes include data, curve, or data+curve, printing interval adjustable from 1 second to 120 minutes, and 3 custom titles (8 Chinese characters) are supported to meet on-site data retention needs.
2.4 Comprehensive Alarm Functions for Safety and Reliability
- Supports 4 alarm types: upper upper limit, upper limit, lower limit, lower lower limit. Each channel can independently enable/disable alarms, with adjustable alarm delay (0-60 seconds) and hysteresis (0-99999), avoiding false alarms; 6 relay outputs can link external equipment to respond to abnormal conditions promptly.
- Alarm records fully retain alarm channel, type, status, and time, and records are not lost after alarm cancellation. Combined with power failure records (including power-off/on time and duration), it is convenient to trace equipment operation status.
3. Main Functions
3.1 Data Acquisition and Monitoring
- Real-Time Acquisition: Synchronously collects data from 6 channels, displaying real-time measured values, units, tags, and original signal values of each channel. Supports channel display on/off with a concise and clear interface; supports accumulation function (optional on/off), with customizable accumulation coefficient and unit, adapting to the statistics of parameters such as flow and energy consumption.
- Signal Calibration: Supports channel value multiple adjustment (K) and addition/subtraction adjustment (B). Signal quality can be optimized through filtering and low-signal cutoff functions to ensure measurement accuracy; thermocouple cold junction compensation supports automatic/manual mode, and cold junction value can be fine-tuned in automatic mode to improve temperature measurement accuracy.
3.2 Historical Data Query and Management
- Data Query: Queries historical curves by time range, supporting curve scaling (1/2/4/8 times), recall cursor movement, hiding/showing specified channel curves for intuitive data trends; 256 power failure records, 256 alarm records, and 256 operation logs, supporting page turning and single record browsing for easy equipment maintenance.
- Data Export: Quickly transfers historical data, alarm records, power failure records, and operation logs via USB U disk. Exported files are compatible with upper computer software, supporting further data analysis and report generation to meet data traceability needs.
3.3 Alarm and Output Control
- Alarm Configuration: Each channel can independently set alarm threshold, delay, and hysteresis, specifying the corresponding relay output contact. The relay acts with delay after alarm triggering to accurately control external alarm equipment or actuators.
- Transmission Output: Maps data from any input channel to 4-20mA transmission output, directly connecting to PLC, DCS and other control systems to achieve closed-loop data control, adapting to industrial automation scenarios.
3.4 System Configuration and Maintenance
- System Settings: Supports date and time calibration, language switching, recording interval setting, buzzer on/off, and factory reset to meet different usage needs; configuration parameters can be exported to U disk for backup or imported from U disk for restoration, facilitating batch equipment configuration.
- Fault Diagnosis: Displays、open circuits 、over-limit alarms, intuitively indicating wiring faults or signal abnormalities; supports original signal debugging to quickly troubleshoot signal acquisition problems, enabling convenient maintenance.
