Paperless Data Recorder – D7100

Industrial paperless data recorder with high-definition color LCD and multi-channel signal input.
The D7100 Paperless Data Recorder provides reliable process monitoring, data logging, and historical recording for temperature, pressure, flow, level, and energy systems. Featuring USB/SD data export, MODBUS communication, and compatibility with industrial sensors, flowmeters, PLCs, and VFD systems, it is ideal for process control, compliance, and energy efficiency applications.

Typical Applications

  • Industrial process monitoring & control

  • Energy consumption and efficiency tracking

  • Environmental monitoring & compliance reporting

  • Water & wastewater treatment systems

  • HVAC system performance analysis

  • Research & development laboratories

  • Quality assurance and quality control (QA/QC)

Description

The D7100 Paperless Data Recorder is a compact, high-performance industrial data recording and monitoring instrument designed to replace traditional paper chart recorders. Equipped with a large, high-definition true-color LCD display and powered by a 32-bit ARM microprocessor, it delivers fast response, intuitive operation, and stable long-term performance.

This LCD paperless recorder supports multi-channel, fully isolated signal inputs, allowing simultaneous monitoring and recording of temperature, pressure, flow, liquid level, and electrical signals. With real-time curve display, historical data storage up to 2 years, and USB/SD card export, the D7100 ensures accurate traceability for quality control, regulatory compliance, and energy management.

The recorder supports MODBUS RTU communication via RS485/RS232, enabling seamless integration with PLCs, SCADA systems, VFDs, building automation, and energy management platforms. It is fully compatible with LONGVISTA sensors, flowmeters, and most third-party industrial instruments.

The D7100 is engineered for industrial reliability, measurement accuracy, and long-term data integrity, meeting the demands of critical industrial, environmental, and energy monitoring applications.


Application-Specific Engineering Recommendations

1. Process Automation & Manufacturing Lines

For industrial process monitoring (temperature, pressure, flow, speed):

Recommended configuration

  • Use 4–20 mA signal inputs for maximum noise immunity

  • Enable input bias correction during commissioning

  • Configure real-time curve display + historical recording

  • Use RS485 MODBUS RTU to integrate with PLC or SCADA systems

Why it matters

This setup ensures stable signal acquisition in electrically noisy environments and provides reliable long-term process traceability for quality control and audits.


2. Energy Monitoring & Efficiency Analysis

For energy management, equipment performance tracking, and optimization projects:

Recommended configuration

  • Record key parameters such as:

    • Motor current

    • Flow rate

    • Temperature rise

    • Pressure differential

  • Use USB or SD card data export for trend analysis

  • Synchronize data sampling intervals with VFD operating cycles

Why it matters

Long-term historical data enables identification of inefficiencies, abnormal operating patterns, and energy-saving opportunities.


3. HVAC & Building Automation Systems

For HVAC plants, air handling units (AHUs), chillers, and pumps:

Recommended configuration

  • Pair the D7100 with:

    • Temperature & humidity sensors

    • Pressure or differential pressure transmitters

    • Flow meters on chilled / hot water loops

  • Use MODBUS communication to connect with BMS or VFDs

  • Configure alarms for:

    • Abnormal temperature drift

    • Pressure loss

    • Flow imbalance

Why it matters

Continuous data logging improves system stability, reduces downtime, and supports proactive maintenance in building automation environments.


4. Water & Wastewater Treatment

For water quality monitoring and treatment processes:

Recommended configuration

  • Connect sensors for:

    • Turbidity

    • Level

    • Flow

    • Temperature

  • Use isolated input channels to avoid ground loop interference

  • Enable alarm outputs for:

    • Threshold exceedance

    • Sensor failure detection

Why it matters

Reliable data recording is critical for regulatory compliance, process optimization, and fault diagnosis in water treatment facilities.


5. Environmental Monitoring & Compliance Reporting

For laboratories, environmental stations, and regulatory documentation:

Recommended configuration

  • Set stable sampling intervals

  • Use USB/SD card backup as redundant storage

  • Archive data regularly for long-term retention

  • Export data for third-party analysis software or reporting tools

Why it matters

Accurate, tamper-resistant historical records are essential for audits, certifications, and compliance verification.


Engineering Note:

Configuration recommendations are based on typical industrial installations. For complex systems or critical processes, sensor selection, signal type, and communication topology should be verified during system design or commissioning.


Features

  • High-definition true-color LCD paperless recorder

  • Multi-function display with freely switchable screens

  • 4 fully isolated input channels

  • Supports 30+ signal types (current, voltage, RTD, thermocouple)

  • Real-time curve display and historical data recording

  • Up to 2 years of internal historical data storage

  • USB / SD card (up to 32GB) data backup and transfer

  • PC data analysis software included

  • Bias correction and signal calibration function

  • MODBUS RTU communication via RS485 / RS232

  • Alarm output, analog output, and 24V sensor power supply

  • Compact, cost-effective replacement for paper chart recorders


Specification

Measurement Inputs

Current Signals

  • 0–20mA, 0–10mA, 4–20mA

  • Input impedance: ≤100Ω

  • Max input current: ≤30mA

Voltage Signals

  • 0–5V, 1–5V, 0–10V (customized)

  • 0–20mV, 0–100mV

  • Input impedance: ≥500KΩ

Temperature & Resistance

  • RTD: Pt100, Cu50, Cu53, Cu100, BA1, BA2

  • Linear resistance: 0–400Ω

  • Thermocouples: B, S, K, E, T, J, R, N, F2, WRe


Outputs

  • Analog output:

    • 4–20mA, 0–20mA, 0–10mA

    • 1–5V, 0–5V, 0–10V (customized)

  • Alarm output: Relay (AC220V/2A, DC24V/2A, resistive load)

  • Sensor power supply: DC24V ±1V, ≤50mA


Communication

  • RS485 / RS232

  • MODBUS RTU protocol

  • RS485 distance: up to 1 km

  • RS232 distance: up to 15 m


General Parameters

Parameter Specification
Measurement Accuracy 0.2% FS ±1 digit
Operating Temperature 0–50°C
Relative Humidity ≤85% RH (non-condensing)
Power Supply AC 100–240V or DC 20–29V
Display True-color LCD


FAQ

1. What is a paperless data recorder and how is it different from a digital display controller?

A paperless data recorder continuously records, stores, and visualizes process data over time, whereas a digital display controller mainly focuses on real-time measurement and control.

The D7100 not only displays process parameters but also:

  • Stores up to 2 years of historical data

  • Records trend curves

  • Supports USB / SD card data export

  • Enables remote data communication

This makes it ideal for traceability, analysis, and compliance, not just live monitoring.


2. Which sensors can be connected to the D7100?

The D7100 supports a wide range of industrial sensors, including:

  • Temperature sensors: PT100, thermocouples (K, J, T, etc.)

  • Pressure transmitters

  • Flow meters

  • Level sensors

  • Humidity and environmental sensors

It is compatible with Longvista products as well as most third-party sensors using standard 4–20 mA, voltage, or resistance outputs.


3. Can the D7100 be used with VFDs (Variable Frequency Drives)?

Yes. The D7100 is commonly used together with VFDs to:

  • Monitor motor load and process feedback

  • Record flow, pressure, or temperature changes during speed regulation

  • Analyze system behavior during startup, shutdown, or fault conditions

Using RS485 MODBUS RTU, the recorder can exchange data with VFDs, PLCs, or building management systems.


4. How many signals can the D7100 record simultaneously?

The D7100 provides 4 fully isolated input channels, each supporting multiple signal types.
Isolation helps prevent:

  • Electrical noise interference

  • Ground loops

  • Signal instability in industrial environments


5. How is historical data stored and retrieved?

Data is stored internally and can be:

  • Exported via USB flash drive or SD card

  • Analyzed using PC analysis software

  • Archived for long-term storage or compliance purposes

This allows easy data sharing with maintenance teams, engineers, or auditors.


6. Is the D7100 suitable for HVAC and building automation systems?

Yes. The D7100 is well suited for HVAC applications such as:

  • Chiller and boiler monitoring

  • AHU temperature and humidity tracking

  • Pump and fan performance analysis

  • Energy optimization projects

It integrates easily with BMS, VFDs, and field sensors using standard industrial protocols.


7. Does the recorder support alarms and control outputs?

Yes. The D7100 supports:

  • Relay alarm outputs for high/low limits

  • Analog outputs for retransmission

  • 24V sensor power supply output

This allows the recorder to function as part of a monitoring and protection system, not just a passive logger.


8. Is programming and configuration complicated?

No. The D7100 features:

  • An intuitive LCD interface

  • Menu-based parameter configuration

  • Permanent storage of settings even after power loss

Most installations can be configured on-site without special software.


9. What industries typically use the D7100?

The D7100 is widely used in:

  • Industrial process automation

  • Water & wastewater treatment

  • HVAC and building services

  • Environmental monitoring

  • Laboratories and R&D

  • Energy management systems


10. Can you provide support for sensor selection and system integration?

Yes.
We provide engineering-level support for:

  • Sensor selection

  • Signal compatibility verification

  • Application-specific recommendations

  • Integration with VFDs, PLCs, and BMS

This ensures the recorder performs reliably in real-world installations.



Datasheet

Paperless Data Recorder – D7100 – Datasheet