1. Product Performance

1.1 Measurement and Input Performance

• Channel Configuration: Supports up to 32 universal isolated input channels, flexibly combined via 4 cards (input card, alarm card, transmission card). The standard configuration is 24 input channels + 16 alarm channels, with strong channel expandability.
• Signal Compatibility: Compatible with 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, covering mainstream industrial standard signals.
• 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; 0.0%-9.9% low-signal cutoff function to zero out signals below the set ratio, with strong anti-interference ability.

1.2 Storage and Recording Performance

• Storage Capacity: 64MB 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.
• Recording Interval: 12 optional levels from 1 second to 1 hour. With 32 channels and 1-second interval, it can record continuously for 10 days; for 1 channel and 1-second interval, the maximum recording duration is 320 days, adapting to different recording requirements.
• Data Security: Historical data is not lost after power failure, and data in non-overlapping time periods remains intact after time adjustment; when channel signal or range is changed, historical data automatically adapts to the new range without confusion.

1.3 Output and Communication Performance

• Output Functions: Up to 16 relay alarm outputs (250VAC 3A/30VDC 3A resistive load), up to 8 4-20mA transmission outputs (accuracy 0.2%, load ≤750Ω); 2 channels of 24VDC power distribution (total output current ≤60mA), supporting two-wire instrument power supply.
• Communication Interfaces: Standard RS485 communication (Modbus RTU), Ethernet communication (Modbus TCP), optional RS485 acquisition interface (Modbus RTU); USB2.0 interface compatible with 32G large-capacity U disk for convenient data transfer.
• Communication Parameters: RS485 baud rate optional from 9600-115200, parity modes including no parity/odd parity/even parity; Ethernet supports DHCP automatic acquisition or manual IP setting, port 502, default floating-point format 2143, adapting to industrial network environments.

1.4 Environmental and Structural Performance

• Environmental Adaptability: Operating temperature -10~60℃, humidity 0~85%RH (non-condensing); strong EMC anti-interference ability, power supply burst pulse 2000V, signal burst pulse 1000V, ESD contact discharge 4000V/air discharge 8000V.
• Structural Specifications: 7-inch color touch LCD screen (800×480 resolution), panel size 187×147mm, cutout size 138×138mm, panel-mounted installation, panel protection class IP65, weight 1100g, suitable for industrial indoor installation scenarios.
• Power Supply Guarantee: Supports AC100-240V 50Hz or DC24VDC±10% power supply, power ≤20W, with 24VDC reverse connection protection for safe and stable power supply.

2. Core Selling Points

2.1 Multi-Channel Universal Input with Strong Adaptability

• 32 isolated input channels can flexibly access various signals such as current, voltage, and thermocouple without additional adapter modules, meeting industrial multi-parameter measurement needs in one stop and reducing equipment configuration costs.
• Channels support Chinese Pinyin tag configuration (8 Chinese characters/16 characters), 0-3 adjustable decimal places, and optional open-circuit processing (maximum/minimum/hold), with flexible parameter configuration adapting to different monitoring scenarios.

2.2 Touch Operation + Multi-Form Display for High Usability

• 7-inch high-definition color screen with touch operation for sensitive response; supports 5 data display forms (digital display, bar graph, dashboard, real-time curve, historical curve), enabling intuitive data trend observation. Redundant channels can be hidden for convenient switching.
• Built-in Chinese/English bilingual free switching, supporting configuration export/import, initial password 0000, and 6-level password hierarchical management. Non-professionals can be restricted from operation permissions, balancing security and usability.

2.3 Convenient Data Transfer and Printing for Strong Practicality

• USB interface supports full/partial data transfer, files are automatically named "date + serial number" and stored in the PLR folder of the U disk. They can be opened and analyzed via upper computer software (PLR.EXE) without complex operations.
• Standard micro printer interface (alternative to RS485 acquisition interface), supporting automatic/manual printing. Data, curve, or data+curve modes are optional, printing interval adjustable from 1 second to 480 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.
• Alarm status is displayed in real time, and alarm records include channel, type, status, and time. Alarm cancellation records are retained for quick traceability of alarm causes; relay output can link external equipment to respond to abnormal conditions promptly.

3. Main Functions

3.1 Data Acquisition and Monitoring

• Real-Time Acquisition: Synchronously collects data from 32 channels, displaying real-time measured values, units, and tags of each channel. Supports custom channel colors and free setting of display on/off, with a concise and clear interface.
• Virtual Calculation: Supports channel virtual calculation configuration, allowing users to customize calculation formulas according to actual needs, expanding measurement functions and adapting to complex parameter calculation scenarios.
• Accumulation Function: Each channel can independently enable/disable the accumulation function, supporting accumulation value clearing, adapting to the accumulation and statistics needs of parameters such as flow and energy consumption.

3.2 Historical Data Query and Management

• Data Query: Queries historical curves by time range, supports channel hiding and channel scale switching. Historical data is displayed in numerical list or curve form for intuitive trend observation.
• Record Query: Power failure records include power-off/on time and duration; operation logs record key operations such as configuration modification and time adjustment; alarm lists fully retain alarm and cancellation information, facilitating 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.

3.3 Alarm and Output Control

• Alarm Configuration: Each channel can independently set alarm type, threshold, delay, and hysteresis, specifying the corresponding relay output contact. The relay acts with delay after alarm triggering to accurately control external equipment.
• Transmission Output: Maps data from any input channel to 4-20mA transmission output, supporting Y=KX+B linear adjustment, adapting to PLC, DCS and other control systems to achieve closed-loop data control.
• Printing Function: Automatic printing allows setting printing interval and channels, with an automatic printing icon displayed in the title bar; manual printing supports selecting any time range and specified channels, with flexible printing modes to meet on-site data recording needs.

3.4 System Configuration and Maintenance

• System Settings: Supports date and time calibration, language switching, recording interval setting, automatic/manual thermocouple cold junction compensation, and cold junction value fine-tuning to ensure measurement accuracy.
• Configuration Management: Supports input configuration (signal type, range, tag, etc.), alarm configuration, communication configuration, transmission configuration, and printing configuration. Configuration parameters can be exported to U disk for backup or imported from U disk for restoration, facilitating batch 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.