Gas Monitoring System / Fixed Gas Detectors
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Model : Xgard series
 
● 검지하고자 하는 가스에 가장 적합한 4 가지 타입의 센서 사용,
● Poison resistant pellister, Electrochemical, Thermal conductivity, Sulphistor sensor
● 모든 현장에 적합하도록 M20, M25, 1/2" NPT 또는 3/4" NPT cable glands 가능

● Type 1 : Electrochemical sensor, 본질 안전 방폭, 독성 및 산소 검지
● Type 2 : Electrochemical sensor, 내압 방폭, 독성 및 산소 검지
● Type 3 : Catalytic bead sensor, 내압 방폭, 폭발성 가스 검지
● Type 4 : Catalytic bead sensor, 내압방폭, 고온의 폭발성 가스 검지(150℃)
● Type 5 : Catalytic bead sensor, 내압방폭, 폭발성 가스 검지, 4~20mA output
● Type 6 : Thermal conductivity sensor, 내압방폭, Ar, C4H10, CO2, He, H2, CH4, C3H8등의 가스 검지
● Type 7 : Sulphistor sensor 사용, 내압방폭, H2S 검지용

     
 
 
Gas Type
1. Xgard 1 : Acetic acid, Acid gas, NH3, AsH3, Br2, CO, CL2, CLO2, B2H6,
F2, GeH4, H2, HCN, HF, H2S, NO2, O3, O2, COCL2, PH3, SiH4, SO2

2. Xgard 2 : CO, H2, H2S, O2

3. Xgard 3, 4, 5 & Xsafe : C2H2, Butane, Ethane, H2, LPG, CH4, Pentane, Petrol, Propane,
Vinyl Chloride (VCM)

4. Xgard 6 : Ar, Butane, CO2, He, H2, CH4, PH3

5. Xgard 7 : H2S

Junction box : A356 marine grade alloy with polyester coating

Sensor type : Electrochemical (Type 1, 2)
Catalytic bead (Type 3, 5, 6)
VQ600H 315s/s sensor housing with catalytic beads (Type4)
Thermal conductivity (Type 6)
Sulphistor (Type 7)

Operating temp. : -20 to +50℃ (Type 1, 2)
-40 to +80℃ (Type 3, Xsafe)
-20 to +150℃ (Type 4)
-40 to +55℃ (Type 5)
+10 to +55℃ (Type 6)
-20 to +65℃ (Type 7)

Humidity : 0 to 90% RH

Repeatability : < 2% FSD typically

Zero drift : < 2% FSD/month typically

Response time : Type 1 & 2 (T90) < 10s Oxygen, (T90) < 30s Toxic
Type 3, 4, 5, 6, 7, Xsafe (T90) < 15s

Electrical output : 2wire 4 to 20mA (Type 1 & 2, 7, Xsafe)
3wire mV bridge (Type 3, 4, 5, 6, 7, Xsafe)

Approvals :
1. Type 1 : EExia IIC T4
2. Type 2 : EExd IIC T6
3. Type 3 : EExd IIC T4
4. Type 4 : EExd IIC T3
5. Type 5 : EExd IIC T6
6. Type 6 : EExd IIC T6
7. Type 7 : EExd IIC T4
8. Xsafe : Not certified for use in a hazardous environment.