|
Linear Heat Detector Comparison
Chart |
|
Feature |
Protectowire Digital |
Analog Integrating (1) |
Continuous
Thermocouple (1) |
| Maximum Zone
Length |
Up to 5,000 FT.
(1,524 m) |
1,500 FT. (457.2m) |
2,000 FT. (609.6m) |
| Alarm Point
Location |
YES |
NO |
NO |
| Multiple Alarm
Points Within Zone |
YES |
NO |
NO |
| Underwriters
Laboratory (UL) Listed |
YES |
NO |
NO |
| Factory Mutual
(FM) Approved |
YES |
YES |
NO |
| Alarm Point
Setting Unaffected by Changes in Ambient
Temperature |
YES |
NO |
YES |
| Compatible with
Standard Initiating Devices (Manual Stations,
Contact Devices and Smoke Detectors) |
YES |
NO |
NO |
| Pre-Alarm
Capability |
YES |
YES |
YES |
| Approved for use
in Hazardous Locations |
YES |
YES |
? * |
| Easy to Splice /
Terminate |
YES |
NO |
? * |
| Maximum Alarm
Temperature |
356°F (180°C) |
500°F (260°C) |
350°F (177°C) |
| Expected Service
Life |
Current Installations
Greater than 20 Years |
? * |
? * |
| Requires On Site
Calibration |
NO |
YES |
NO |
| Size |
5/32 in. (4 mm) |
0.09 in. (2.28 mm) |
1/8 in. (3.175 mm) |
| Annual Maintenance
per NFPA 72, 1999 |
Minimal |
Heat Test - Must
alarm within 1 minute |
? * |
| Accuracy dependent
on length |
NO |
YES |
NO |
| Designed and
Manufactured by and ISO-9001 Registered Company |
YES |
? * |
? * |
|
Feature |
Protectowire Digital |
Analog Integrating (1) |
Continuous
Thermocouple (1) |
(1) - Based on available information
at the time of publication 4/13/01
? * - Information unknown or not available |
