Det-Tronics R8471NH34001,2,3 Single Channel Gas Controller, NH3 - Manual (Page 4)

95-8529 1.1 2
SPECIFICATIONS
SENSOR
RANGE—
Cl
2
: 0 to 10 PPM
SO
2
: 0 to 100 PPM.
NO
2
: 0 to 20 PPM..
RESPONSE TIME—
Cl
2
: T20 in
≤ 0.9 minutes, T50 in ≤ 2.2 minutes
SO
2
: T20 in ≤ 30 seconds, T50 in ≤ 5 minutes.
NO
2
: T20 in
≤ 30 seconds, T50 in ≤ 5 minutes.
ZERO STABILITY—
< 1 PPM per month.
CROSS SENSITIVITY—
See Tables 2 to 4.
TEMPERATURE RANGE—
-4°F to +122°F (-20°C to +50°C).
HUMIDITY RANGE—
15 to 90% RH.
PRESSURE RANGE—
Atmospheric ±10%.
VOLTAGE REQUIREMENTS—
12 to 32 vdc, 24 vdc nominal (across sensor).
POWER REQUIREMENTS—
0.25 to 0.8 watt, 0.5 watt nominal (at full scale output).
MAXIMUM LOOP RESISTANCE—
300 ohms at 18 vdc, 600 ohms at 24 vdc, 1000 ohms
at 32 vdc.
ENCLOSURE MATERIAL—
Cl
2
: Aluminum
SO
2
/NO
2
: Stainless Steel.
DIMENSIONS—
See Figure 1 for dimensions of the sensor and Figure
2 for dimensions of the junction box.
HAZARDOUS LOCATION RATING—
The C7067E (Cl
2
) is designed to meet FM and CSA
intrinsic safety requirements for Class I, Div. 1, Groups
A, B, C and D; and BASEEFA/CENELEC EEx ia IIC
T6.
The C7068E (SO
2
) and C7069E (NO
2
) are designed
to meet FM and CSA requirements for Class I, Div. 1,
Groups C and D.
Gas Concentration Expected
Signal
Carbon Monoxide (CO) 300 ppm 0
Hydrogen Sulfide (H
2
S) 15 ppm -3
Sulfur Dioxide (SO
2
) 5 ppm 0
Nitric Oxide (NO) 35 ppm 0
Chlorine (Cl
2
) 1 ppm 1
Hydrogen (H
2
) 200 ppm 0
Hydrogen Cyanide (HCN) 10 ppm 0
Hydrogen Chloride (HCl) 5 ppm 0
Ethylene (C
2
H
4
) 100 ppm 0
Methanol saturated vapor 17
Table 4—Cross Sensitivity of NO
2
Sensor
A
A2077
C
B
3/4 INCH
STANDARD PIPE THREAD
SENSOR A B C
Cl2 5.0 (12.7) 2.2 (5.6) 1.1 (2.8)
S02/N02 3.75 (9.6) 2.0 (5.0) 1.75 (4.5)
Figure 1—Sensor Dimensions in Inches (Centimeters)
Gas Signal in ppm
Carbon Monoxide (CO) 0
Hydrogen Sulfide (H
2
S) ≈ -2.0
Sulphur Dioxide (SO
2
) <-.05
Nitric Oxide (NO) 0
Nitrogen Dioxide (NO
2
) ≈ 10.5
Hydrogen (H
2
) 0
Hydrogen Cyanide (HCN) <0.1
Hydrogen Chloride (HCl) ≈ 0.1
Ethylene (C
2
H
2
) 0
Table 2—Cross Sensitivity of Cl
2
Sensor
to 100 ppm Concentrations
Gas Concentration Expected
Signal
Carbon Monoxide (CO) 300 ppm <5
Hydrogen Sulfide (H
2
S) 15 ppm 0
Nitric Oxide (NO) 35 ppm 0
Chlorine (Cl
2
) 1 ppm -0.5
Hydrogen (H
2
) 200 ppm 0
Hydrogen Cyanide (HCN) 10 ppm <5
Hydrogen Chloride (HCl) 5 ppm 0
Ethylene (C
2
H
4
) 100 ppm 0
Methanol saturated vapor 4
Table 3—Cross Sensitivity of SO
2
Sensor