4.3 4098 TrueAlarm Sensors
Specifications
Table 7: TrueAlarm sensor specifications
Sensor PID 4098-9714
4098-9774
4098-9733
4098-9778
4098-9734 4098-9746
4098-9747
4098-9764 4098-9768
Type of sensor Photoelectric Heat Heat Gas Photo/heat Photo/heat
Average
operating current
80 µA 6 µA at 68°F (20°C)
13 µA at 135°F (57°C)
90 µA 50 µA 90µA 130µA
UL temperature
rating*
— 135°F (57°C)**
155°F (68°C)†
135°F (57°C)**
155°F (68°C)†
190°F (88°C)#
135°F (57°C)**
155°F (68°C)†
135°F (57°C)**
155°F (68°C)†
Humidity range
(non-condensing)
10-95% RH 10-95% RH 10-95% RH 15-95% RH
(15-90% for long
term exposure)
10-95% RH 10-95% RH
Air velocity range 0 - 4000 FPM — — 0 - 1000 FPM 0 - 4000 FPM 0 - 4000 FPM
* Fixed temperature functions are software programmed and selectable from the UL temperature rating.
** UL Max. Ambient Ceiling Temp. of 100°F (38°C) at 3600 sq. ft. of Max. Coverage.
† UL Max. Ambient Ceiling Temp. of 100°F (38°C) at 1600 sq. ft. of Max. Coverage.
# UL Max. Ambient Ceiling Temp. of 150°F (66°C) at 3600 sq. ft. of Max. Coverage.
4.3.1 Special applications
1. The sensitivity range, or setting for the 4098-9714, 4098-9774 and 4098-9764 sensor is 0.2%/FT to 3.7%/FT smoke obscuration.
The sensitivity settings for special applications are configured in the programmer. Sensitivity settings higher than 1.0%/FT are not
UL compliant.
2. Special application sensitivities are not for general use and may be more prone to false alarms if used in unsuitable
environments. Potental nuisance sources include steam and particles generated from cooking. Sensors set to a special
application sensitivity are not suitable for use in areas where cooking appliances may be used. If cooking appliances are used
within the protected space, a normal application mode or configuration must be used for that area. Suitable environments for
special application sensitivity settings include data centers, telecommunications, and clean rooms. Unsuitable environments
include kitchens and living areas.
3. The 0.2%/FT, 0.5%/FT and 1.0%/FT settings are very sensitive settings: only use the 0.2%/FT setting when a sensor is located
in a totally smoke-free and controlled temperature environment, such as a computer room or telephone switching
exchange.
4. To determine if an area is suitable for the 0.2%/FT setting, complete the following steps:
a. Set the sensitivity for the installed sensor at 1.5%/FT.
b. Monitor the peak values for 90 days. If you record a peak value of 0.1%/FT or higher during the 90 days, do not use the 0.2%/
FT setting.
5. To determine if an area is suitable for the 0.2%/FT setting, complete the following steps:
a. Set the sensitivity for the installed sensor at 1.5%/FT.
b. Monitor the peak values for 90 days. If you record a peak value of 0.25%/FT or higher during the 90 days, do not use the 0.5%/
FT setting.
6. To determine if an area is suitable for the 1.0%/FT setting, complete the following steps:
a. Set the sensitivity for the installed sensor at 1.5%/FT.
b. Monitor the peak values for 90 days. If you record a peak value of 0.5%/FT or higher during the 90 days, do not use the 1.0%/FT
setting.
4.3.2 Mounting
All sensors identified in 4098 TrueAlarm Sensors mount to a sensor base, refer to 4098 TrueAlarm Sensor Bases for more information.
Refer to the following information and Figure 3 when mounting TrueAlarm sensors.
4.4 4098 TrueAlarm Sensor Bases
TrueAlarm smoke or heat sensor bases are connected to a 2120 Multiplex Communicating Device Transponder (CDT), 4020, 4100+, 4100U,
4100ES, 4010ES, 4007ES, 4007ES Hybrid*, 4120, 4008, or 4010 panel by a single wire pair, MAPNET II/IDNet. The 4098-9770, 4098-9775,
4098-9776, 4098-9777, 4098-9780, 4098-9789, 4098-9792, 4098-9793, 4098-9766 (IDNet2 only), and 4098-9767 (IDNet2 only) bases
page 20 574-709 Rev. AP
4098 Detectors, Sensors, and Bases Application Manual
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