DA50-N2O Gas Detector (Nitrous Oxide)

[Introduction]

 

DA-50 detects various combustible & toxic gases leaked from industrial areas for gas producers, gas users, gas reservoirs, gas by-producers, and so on, in order to prevent any accidents in advance.

 

DA-50 converts digital signal into the 4-20 standard current signal for output signal which can be transmitted to various external devices such as PLC, DDC, RECODER, and so on. Using these functions, you can easily construct the gas monitoring system more extensive as well as more comprehensive.

 

DA-50 provides RS-485 communication signal and gas leakage alarm signal by relay contact output. Besides, DA-50 has DC 4-20mA standard output which realizes max 2500m long distance output signal transmission from sensor to receiver and RS-485 communication signal which realizes max 1000m long distance signal transmission.

 

 

[Features]

 

Digital Process

Digital process based on built-in micro processor realizes various artificial intelligent functions which result in more convenient, more accurate, and more efficient gas detection environment.

 

Polycarbonate Housing

Polycarbonate housing which has corrosion proof material and water proof structure is the best application to detect corrosive gas.

 

Self Diagnosis

Digital processor automatically diagnoses the sensor signal and sends 2mA error signal output on the malfunction in the sensor.

 

LCD display with Back Light

   LCD offers real-time display of gas density and back light offers easy reading even in dark area.

 

User Programmable Menu

User programmable calibration density and detection rage offers user’s own operating functions.

 

Multi Signal Output

Various output signals - DC 4-20mA, 2 step-relay contact, & RS-485(option) – provides best networking with all kinds of devices & equipments.

 

4-20mA Transmitter

4-20mA output enables stable and long distance (maximum 2.5km) signal transmission.

 

RS-485

RS-485 enables stables stable and long distance (maximum 1.2km) signal communication.

 

Alarm output

SPST 2 step relay contacts (AL1/AL2).

 

 

[Specification]

 

Detection principle

Catalytic, electro-chemical, NDIR, or PID

Gas sampling

Diffusion

Target gas

Refer to the list

Density indication

LCD display - PPM, %LEL, or %

Response time

Within 20 seconds, 90% / full scale

Accuracy

≤ ±2% / full scale

Sensor calibration

Calibration with switch

Sensor parallax

Zero – ≤ ±2% / 6 months, Span -≤ ±2% / 6 months

User programmable

Calibration density, detection range

Input power

DC 20 ~ 30V

Output power

4 ~ 20mA / full scale – maximum 2.5km long signal transmission

Communication

RS-485 – maximum 1.2km long signal transmission

with GasDNA’s own protocol

Operating temperature and humidity

-20~50, 5~95% RH (non-condensing)

Signal wire

CVVS & CVVSB 1.25sq x 3 wires - shield type

Alarm release

Manual or Automatic

Mounting

Wall or pipe mounting

Housing

Polycarbonate

Alarm output

2 step- relay contacts (AL1/AL2)


  


 
 
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