Rate Compensation Heat Detectors 302 Series
Series 302 heat detectors ✔️✅ are designed for use in normal environments as well as environments where the detectors are subject to weather, moisture (internal condensation) ✔️✅ and explosive atmospheres. They are normally-open devices designed to close an electrical circuit upon activation. All models feature rate compensation and are available with either 135
°F (57.2
°C) or 194
°F (90
°C) ratings. They are self restoring, hermetically sealed, shock and corrosion resistant, and are tamperproof.
Standard Features
• Rate compensation offsets thermal lag
• Self-restoring – no manual reset required
• Explosion proof and weatherproof models available
• Weatherproof models available that do not require a special backbox
• Box mount and surface mount models available
Application
Sensors rated at 135 °F (57.2 °C) will not respond to momentary temperature fluctuations less than 30 °F/minute between 60 °F (16 °C) and 100 °F (38 °C). Sensors rated at 194°F (90 °C) will not respond to momentary temperature fluctuations less than 50 °F/minute between 60 °F (16 °C) and 150 °F (66 °C). 302 Series sensors should not be used in environments where conditions exceed these parameters. Do not install them in hot air ducts, in front of heaters, in paint booths that use heat to cure paint, or any other location subject to temperature fluctuation.
Sensor’s Rated |
Minimum Ambient |
Maximum Ceiling |
135 °F (57.2 °C) |
-40 °F (-40 °C) |
100 °F (38 °C) |
194 °F (90 °C) |
-40 °F (-40 °C) |
150 °F (66 °C) |
The sensor's aluminum tube acts as a heat collector when sources of heat radiate directly on the tube. Install these sensors out of direct sunlight and away radiating heat sources including the direct flow heaters and heat ducts.
Detector Spacing
Model |
302 |
302-AW |
302-ET |
302-EPM |
UL- Vertical Spacing |
50' x 50' |
50' x 50' |
50' x 50' |
40' x 40' |
UL- Horizontal Spacing |
40' x 40' |
40' x 40' |
40' x 40' |
30' x 30' |
FM - Horizontal |
30' x 30' |
30' x 30' |
30' x 30' |
Not Listed |
Dimensions
Model |
ET |
EMP |
Tube Length |
3" (76.2 mm) |
3" (76.2 mm) |
Tube Diameter |
0.5" (12.7 mm) |
0.5" (12.7 mm) |
NPT Thread |
0.5" (12.7 mm) |
0.5" (12.7 mm) |
Hex Base |
1" (25.4 mm) plastic |
1.25" (31.75 mm) |
Ordering Information
Interior applications |
Ship Wt |
|||
302-135 |
Heat Detector - Rate Compensation, Interior |
For interior mounting. |
0.2 lb. (0.09 |
|
302-194 |
Heat Detector - Rate Compensation, Interior |
Moisture & dust proof applications |
Ship Wt. |
|||
302-AW-135 |
All-weather Heat Detector - Rate |
Hermetically sealed for moisture proof |
0.2 lb. (0.09 |
|
302-AW-194 |
All-weather Heat Detector - Rate |
Moisture & dust proof applications (box mount) |
Ship Wt |
|||
302-ET-135 |
All-weather Heat Detector - Rate |
Hermetically sealed for moisture proof |
0.2 lb. (0.09 |
|
302-ET-194 |
All-weather Heat Detector - Rate |
Explosion proof applications |
Ship Wt. |
|||
302-EPM- |
Heat Detector - Rate Compensation, |
Explosion proof for installation in |
0.3 lb. (0.14 |
|
302-EPM- |
Heat Detector - Rate Compensation, |
Adapter plate |
Ship Wt. |
|||
AP-P |
Decorative white plastic adaptor plate for mounting 302 and 302-AW to any 3" outlet box |
0.1 lb. (0.05 |
Outlet body
Use with standard backboxes and covers such as those manufactured by Killark Electric Co., or equivalent.
Explosion proof outlet body |
Ship Wt. |
||
JALX11 |
Explosion proof outlet body with cover (½" thread hubs back, four sides and cover) - Killark |
3.5 lb. (1.6 kg) |
You will receive a quote from us as soon as possible..
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