Description
1. Product Overview
2. Key Features
Model: DELOMATIC-3/DGU1 Trace Oxygen Transmitter Module
Built-in high-precision temperature compensation algorithm
Support matching mainstream electrochemical trace oxygen sensors
Stable linear output, automatic calibration function
Dual signal output: analog + digital signal
Industrial grade anti-interference design, suitable for complex on-site environment
Compact size, easy embedded installation and system integration
Low power consumption, long-term continuous operation without drift
Simple calibration, no need for professional debugging
3. Technical Specifications
3.1 Electrical Parameters
| Parameter | Specification |
|---|---|
| Model | DELOMATIC-3/DGU1 |
| Supply Voltage | DC 12V ~ 24V |
| Working Current | ≤ 80mA |
| Measuring Range | 0～10ppm / 0～100ppm (optional) |
| Detection Accuracy | ±2% FS |
| Resolution | 0.01ppm |
| Warm-up Time | ≤ 5 minutes |
| Analog Output | 4～20mA |
| Digital Communication | RS485, Modbus-RTU Protocol |
| Temperature Compensation | Automatic full-range compensation |
3.2 Environmental Parameters
| Parameter | Specification |
|---|---|
| Operating Temperature | 0℃ ～ +50℃ |
| Working Humidity | 10%～95% RH, non-condensing |
| Storage Temperature | -20℃ ～ +60℃ |
| Working Pressure | 80～120kPa |
| Protection Level | IP40 |
3.3 Mechanical Structure
| Parameter | Specification |
|---|---|
| Installation Method | DIN rail / screw fixed mounting |
| Outline Dimension | Compact modular size |
| Shell Material | Engineering plastic |
| Net Weight | Approx. 45g |
4. Application Scope
Industrial nitrogen, argon, hydrogen trace oxygen online monitoring
Semiconductor manufacturing process gas detection
Laboratory glove box and inert atmosphere equipment
Portable and fixed trace oxygen analyzer supporting module
Food and pharmaceutical packaging residual oxygen monitoring
Petrochemical and metallurgical protective gas monitoring system
5. Pin Definition & Wiring Instruction
Power Terminal
VCC: DC 12～24V positive
GND: Power negative and signal common ground
Sensor Interface
Match dedicated sensor socket, support direct plug of DGU series sensor
Signal Output
4～20mA: Analog signal output
A / B: RS485 communication line
6. Installation & Operation Guide
6.1 Installation
Adopt horizontal installation, keep the module away from heat source and corrosive gas.
Wiring strictly follow pin definition, avoid reverse connection of power supply.
Sensor wiring should be shielded wire, separate from power cable to avoid interference.
Keep good ventilation around the module, do not cover or seal it completely.
6.2 Calibration Operation
Power on the module and preheat for 5 minutes before calibration.
Zero Calibration: Access high-purity nitrogen (0ppm), complete zero point setting.
Span Calibration: Access standard gas of known oxygen concentration for span calibration.
After calibration, the module automatically saves parameters and enters normal measurement state.
7. Safety Precaution
Do not use overvoltage power supply to avoid module burnout.
Avoid working in strong corrosion, flammable and explosive gas environment.
Do not disassemble the module privately, otherwise the warranty will be invalid.
Do not let liquid, dust enter the shell and sensor interface.
During thunderstorm season, do good grounding and lightning protection measures.
8. Maintenance
Regularly check wiring looseness and terminal oxidation every 3 months.
Recalibrate every 3～6 months according to on-site environment.
Keep the module surface clean and dry, avoid oil and dust accumulation.
Long-term shutdown should cut off power and store in dry environment.
9. Troubleshooting
| Fault Phenomenon | Cause | Solution |
|---|---|---|
| No display & no power | Power supply abnormal / fuse damaged | Check input voltage and power wiring |
| Measurement value drifting greatly | Unfinished warm-up / sensor aging | Fully preheat; recalibrate or replace sensor |
| No 4-20mA output | Wiring error / output channel fault | Check analog output wiring |
| RS485 communication failure | A/B reverse connection / address conflict | Swap A/B line; modify communication address |
| Unstable reading | Nearby electromagnetic interference | Use shielded wire and reliable grounding |
10. Warranty & Disclaimer
Product Model: DELOMATIC-3/DGU1
Warranty Period: 12 months from the date of delivery under normal use
The warranty does not cover damage caused by unauthorized disassembly, wrong wiring, overvoltage and man-made damage.
All specifications are subject to final product standard, and the design and parameters can be updated without prior notice.
The manufacturer reserves the right of final interpretation of product performance and parameters.
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