A
Specifications and reference data
A.1
Technical specifications
Table A-1: Technical Specifications
Spectral response
Multi IR bands
Detection range (at
highest sensitivity setting
for 1 ft.
2
[0.1 m
2
] pan fire)
Fuel
ft. / m
Fuel
ft. / m
n-Heptane
215 / 65
Kerosene
150 / 45
Gasoline
215 / 65
Ethanol 95%
135 / 40
Diesel fuel
150 / 45
Methanol
115 / 35
JP5
150 / 45
Isopropyl alcohol
(IPA)
135 / 40
Methane
150 / 45
Polypropylene
pellets
115 / 35
Liquified petroleum
gas (LPG)
150 / 45
Ammonia
60 / 18
Hydrogen
125 / 38
7 / 2
Office paper
82 / 25
Response time
Typically 5 seconds
Adjustable time delay
Up to 30 seconds
Sensitivity ranges
Two ranges for 1 ft.
2
(0.1 m
2
) n-heptane pan fire from 50 ft. (15 m) to 215 ft. (65 m)
Fields of view
Gasoline: horizontal 80 °, vertical 80 °
Hydrogen: horizontal 70 °, vertical 80 °
Built-in test (BIT)
Automatic (and manual)
(1)
30 in. (0.75 m ) high, 10 in. (0.25 m) wide plume fire
(2)
20 in. (0.5 m) high, 8 in. (0.2 m) wide plume fire
A.2
Electrical specifications
Operating voltage: 18 - 32 Vdc
Table A-2: Electrical Specifications
Operating voltage
Status
All outputs
Without 0-20 mA
Power consumption
(max. 24 Vdc)
Normal
1.61 W
1.56 W
Normal when heater
on
2.28 W
2.16 W
Alarm
2.64 W
2.28 W
Reference Manual
Specifications and reference data
00809-0100-4976
June 2021
Rosemount 975HR
51
Legacy
Содержание Rosemount 975HR
Страница 28: ...Introduction Reference Manual June 2021 00809 0100 4976 28 Emerson com Rosemount L e g a c y ...
Страница 42: ...Installing the detector Reference Manual June 2021 00809 0100 4976 42 Emerson com Rosemount L e g a c y ...
Страница 66: ...RS 485 communication network Reference Manual June 2021 00809 0100 4976 66 Emerson com Rosemount L e g a c y ...
Страница 78: ...SIL 2 features Reference Manual June 2021 00809 0100 4976 78 Emerson com Rosemount L e g a c y ...