International Gas Detectors TOC-635, Руководство по установке

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Calculating System Run Time (conforming to IEEE 485)
Item Description Qty
Load in Watts
(In alarm
mode)
Total Load in
watts (in
alarm mode)
TOC-635-PLUS Controller 1 4.200 4.200
TOC-750X-PHC Gas Detector 10 1.010 10.100
Sounder (25mA @24V DC) 1 0.600 0.600
Cabling- 1000M 1.5mmSQ 1 2.170 2.170
Total load in Watts on Alarm Mode
Total System Power in watts on Alarm Mode
1.20 17.07 20.48
Proposed Battery Rating (Ah)
Available Battery Power 2.40 24.00 57.60
Uncorrected Run Time in Hours (Alarm Mode)
Aging factor (per IEEE 485 6.3.4)
Min. Operating Temperature (degrees Celcius) 35.00
Design margin factor (per IEEE 485 6.3.3)
Corrected Run Time in Hours (Alarm Mode)
Example Calculation
2.81
2.4
TOC-635-PLUS Controller with 10 Flammable Gas Detectors
17.07
0.75
1.15
1.71
0.93
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Use the table provided to work out the total system load in Watts (Table 1)
Add 20% to the total system load to obtain the total system power
Use the proposed battery backup AH rating to calculate available battery power
Calculate the uncorrected run time
Choose a suitable minimum operating temperature de-rating factor (Table 2)
Calculate the corrected run time as:
The following worked example is provided
1.2 x Total Load (W)
AH x 24 (W)
Total System Power
Uncorrected Run Time x Aging Factor x Temp De-rating Factor
Design Margin
Available Battery Power
Temp (oC) 4.4 10 15.6 20 25 35
Equivalent capacity 0.7 0.81 0.89 0.944 1 0.93
Electrolyte Temperature Correction (per IEEE 485 Table 1)
Table 2