Det-Tronics 505 Combustible Gas Detector Transmitter with Combustible Gas Sensor CGS - Manual (Page 7)

4 95-8472 3.1
SPECIFICATIONS
TRANSMITTER
INPUT VOLTAGE—
With signal loop impedance option A: 10 to 30 Vdc
With signal loop impedance option B: 17 to 30 Vdc.
Refer to “Description” section for additional information
regarding impedance option.
Linear, regulated, filtered 24 Vdc power source is
recommended.
POWER CONSUMPTION—
4.0 watts maximum.
PEAK STARTUP CURRENT—
Less than 0.5 ampere for < 0.2 second at 10 Vdc input,
and less than 0.2 ampere for < 0.2 second at 24 Vdc
input.
OUTPUT CURRENT—
Linear 4 to 20 milliamperes.
CURRENT LEVEL—
Fault: < 2.0 mA.
Calibration Mode: 3.4 mA (non-adjustable).
LOAD RESISTANCE—
Option A: 125 ohms maximum.
Option B: 500 ohms maximum.
Refer to “Description” section for additional information
regarding impedance option.
TEMPERATURE RANGE—
Operating: –40°F to +167°F (–40°C to +75°C).
Storage: –67°F to +185°F (–55°C to +85°C).
HUMIDITY RANGE—
0 to 99% RH, non-condensing.
RFI/EMI IMMUNITY—
Less than ± 0.5 mA signal output variation with a 5 watt,
157 Mhz or 451 Mhz walkie-talkie keyed at distances
greater than 1 foot from Model 505 with junction box
cover installed.
DIMENSIONS—
See Figure 4.
CERTIFICATION—
For complete approval details, refer to the apprpriate
Appendix:
Appendix A – FM
Appendix B – CSA
Appendix C – ATEX/CE
Appendix D – IECEx.
3.77
(9.6)
1.28
(3.3)
3.46
(8.8)
4.7
(11.9)
2.7
(6.9)
5.2
(13.2)
5.86
(14.9)
E2281
1
1 SEE FIGURE 5 FOR SENSOR DIMENSIONS
Figure 4—Dimensions of Transmitter Junction Box in Inches (Centimeters) Multiport Model
FM
APPROVED
® FM
APPROVED
®
FM
APPROVED
®