Sensor; System Operation - UTC Fire and Security Det-Tronics R8471B Instructions Manual

SENSOR

OPERATING RANGE—
0 to 100 ppm.
TEMPERATURE RANGE—
Continuous operation:
Intermittent operation:
Recommended storage: +32°F to +68°F
HUMIDITY RANGE—
Continuous: 15 to 90% RH.
Intermittent: 0 to 99% RH.
ACCURACY—
±10 percent of applied gas concentration or ±3 ppm,
whichever is greater.
RESPONSE TIME—
20 percent full range within 12 seconds, 50 percent
full range within 30 seconds when H
equal to full scale is applied.
DRIFT—
Less than 2 ppm per month.
ENCLOSURE MATERIAL—
316 stainless steel.
SENSOR RATINGS—
The C7064E (explosion proof) is CSA certified and
designed to meet FM requirements for Class I,
Division 1, Groups C and D.
The C7064C (intrinsically safe) is CSA certified and
FM approved for Class I, Division 1, Groups A, B, C
and D.
DIMENSIONS—
See Figure 2 for dimensions of the C7064E Sensor
and Figure 3 for dimensions of the junction box.
SHIPPING WEIGHT (Approximate)—
2.5 pounds (1.1 kilograms).

SYSTEM OPERATION

SENSOR
The C7064C (intrinsically safe) and C7064E
(explosion proof) H S Sensors use an electrochemical
2
sensing element to detect the presence of hydrogen
sulfide gas. The electrochemical sensing element
provides improved accuracy and reliability, and
also extended calibration intervals when compared
2.1
–40°F to +105°F
(–40°C to +40°C).
–40°F to +130°F
(–40°C to +55°C).
(0°C to +20°C).
S concentration
2
➛
9.3 (23.6)
*
4U DIMENSIONS SHOWN, 3U HEIGHT IS 5.2 (13.3)
A1526
Figure 1—Controller Dimensions in Inches (Centimeters)
1.75
(4.5)
2.0
(5.0)
A1347
Figure 2—Sensor Dimensions in Inches (Centimeters)
4.7
(11.9)
3.46
(8.8)
3.77
(9.6)
1.28
(3.3)
Figure 3—Junction Box Dimensions in Inches (Centimeters)
3
1.0
(2.5)
➛ ➛
➛
4.05
(10.3)
3/4 INCH
STANDARD PIPE THREAD
5.86
(14.9)
5.2
(13.2)
2.7
(6.9)
95-8401
*
7.0
(17.8)
B2281