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PD1095 Gas Detection Alarm Instrument
PD109S is an intelligent, controllable product that can output a 4-20mA current signal and display it in real time.
Keywords:
output
gases
combustible
Category:
Smart equipment
Hotline:
The PD109S is an intelligent, controllable device that can output a 4-20mA current signal and display it in real time. This product features high stability, high accuracy, and advanced intelligence, and can be used for on-site detection and alarm functions through simple configuration. It is primarily used in applications where combustible gases, oxygen, and various toxic gases need to be detected. The device displays the numerical values of the gases being tested. When the measured value of a particular gas falls outside or exceeds the preset threshold, the system automatically triggers a series of alarm actions—such as alarms, ventilation activation, or circuit tripping—depending on the user’s specific settings.
Features
● Advanced microprocessor technology
● High-brightness LED digital tube or LCD display
● RS485 output, compliant with Modbus RTU communication protocol (optional)
● Three-wire 4–20 mA analog output and SPDT relay output (optional)
● Explosion-proof, powered directly by 12–30V power supply
● Fast response speed and high measurement accuracy
● The model with display features a prominent alarm light or optional audible alarm in dark environments.
● Sensors: Combustible gases are detected using catalytic combustion sensors, while oxygen and toxic gases are detected using imported chemical sensors.
● Low maintenance costs
Technical indicators
| Applicable to: | This system supports input signals from various standard sensors, including gas sensors for carbon monoxide, hydrogen sulfide, hydrogen, sulfur dioxide, ammonia, oxygen, chlorine, and combustible gases. |
| Sensor model | Combustible/Toxic Series. |
| Response time | ≤30 seconds |
| Operating voltage | 24V DC |
| Operating environment | Temperature: -10°C to 50°C, relative humidity <95% (no condensation) |
| System power | Maximum power < 1 W |
| Current output | 4-20mA current output |
| Relay control port | Passive normally open output, capable of being connected to a 220V AC power supply system. |
| External dimensions | Diameter × Height (cm): 10.3 × 10.5. |
| System Connection Cable Requirements | Use either a 3-wire or 4-wire connection method, with a single-core wire diameter ≥ 1.5 mm and a cable length ≤ 1000 m. |
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