Prosense PQD Series Gas Detector - Ansac Technology

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Prosense PQD Series Gas Detector

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Prosense PQD Series fixed gas detectors are designed and developed for the demanding conditions of the industry in order to perform continuous measurement of combustible, toxic, asphyxiate, and VOC gases in the explosive atmosphere.

PID, Pellistor, Electrochemical, Infrared, Semi-conductor sensors employed PQD provides excellent output in LEL, ppm, and VOL ranges.


Easy and Safe Use

• OLED Display: 128x64 large, bright and clear display indicates gas level, detector status and it can be seen in dark locations and different angles easily

• Non-Intrusive Calibration: Zero and Span calibration can be done by a single operator via using magnetic keys without opening the lid in the hazardous area.

• Logging: Stores all alarm, fault, and maintenance events up 250logs to provide a history of the detector. Also, it protects the data thanks to the battery on itself 

• Monitoring: Gas concentration trends for the last 8 hours can be monitored on the OLED screen as it is recording the measurement data

• Remote Control: PQ offers up to 15meters remote control option for applications that sensor and transmitter specifically require separate locations. Moreover, the detector status can be also monitored via Prosense Gas Monitoring software remotely.

• Magnetic Control: Many settings can be adjustable via using a magnetic key.

Easy Maintenance and Simple Installation

• Checking: Relay contacts can be activated or deactivated easily through a user-friendly PQD menu

• Simulation: 4-20mA analog output can be simulated in different values for the test purposes even if there is no target gas in the environment.

• Analog Values: Fault, Warm-up, Calibration, Inhibit, and Overrange values are adjustable.

• Adress: Modbus addresses can be set on the detector menu. No need onboard addressing switches anymore.

• Calibration: Reminds the user when calibration is due to ensure that sensors remain operational and accurate at all times

• Relays: Alarm levels and related parameters can be fully adjustable via detector software.

• Sensor Replacement: Allows sensor replacement with pre-calibrated sensor head to provide easy maintenance.

• Modbus: PQ can be integrated to SCADA systems easily via open source Modbus RS485(RTU) codes.


• Bump Test: The status of the detector can be checked periodically. Ensure that the sensors will respond to their target gas and that the alarms will function

• Calibration Due Warning: Reminds the user by giving Fault when calibration is due

• Wide Range Sensors: High-quality PID, Pellistor, Electrochemical, Infrared, Semiconductor employed PQ provides excellent output for the target gas.


• Pellistor(Catalytic), Electrochemical, Infrared, PID Sensor Options

• Standard 4-20mA Output

• Standard RS485 Modbus(RTU) Interface

• Optional 3 Relay Outputs(Alarm1, Alarm2, and Fault)

• Standard Epoxy Painted Aluminium Body

• Optional SS316 Stainless Steel Body

• Standard Stainless Steel Sensor Housing

• 1/2'',3/4 NPT and M20 Cable Entry Options

• IP65/ IP66 Protection Class

• Suitable to operate in Zone 1, Zone 2 and M2

• ATEX Marking: Ex II 2G Ex db IIC T6 Gb, I M2 Ex db I mb

• ATEX, IECEX and SIL2 certified, EN60079-29-1 Performance Approval

Sensor TechnologyPellistor, Infrared, Electrochemical, PID, Semiconductor
Output Signal4-20mA and Modbus RS485
Sensor Warm-Up60sec
Response Time(T90)Sensor dependent
Operating Temperature-40°C ~ +70°C
Humidity0~ 100%RH Non-Condensing
InputMin 10VDC - Max 32VDC - Nominal 24VDC
Display128x64 Graphic OLED
5 LED indicator for detector status
Event LoggingRecords alarm, fault and maintenance events up to 250 logs
Power ConsumptionMax. 4W
Relay Outputs2 Alarms (Programmable) and 1 Fault (All relays are NO/NC adjustable)
IP RatingIP65/IP66
Junction BoxEpoxy Painted Die-Cast Aluminum / 316 Stainless Steel
Sensor Head316L Stainless Steel
Dimensions/Weight196,96x145,99x112mm / 2100gr
ATEX MarkingII 2G Ex db IIC T6 Gb
II 2G Ex mb db IIC T6 Gb
I M2 Ex db I Mb
Hazardous ClassZone 1 - Zone 2 - M2
CertificatesExVeritas 18 ATEX 0371X
IECEx EXV 18.0021X
FTZU 18 ATEX 0086
IEP12 ATEX 6118X
StandardsIEC EN 60079-0
IEC EN 60079-1
IEC EN 60079-18
IEC EN 60079-29-1


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