Fixed Temperature Thermal Detector

System Sensor 200 Series intelligent plug-in smoke detectors with integral communication provide features that surpass conventional detectors. Detector sensitivity can be programmed in the control panel software. Sensitivity is continuously monitored and reported to the panel. Point ID capability allows each detector’s address to be set with decade address switches, providing exact detector locations for selective maintenance when chamber contamination reaches an unacceptable level.

Models 5251B and 5251RB use an innovative thermistor sensing circuit to produce 135°F fixed and rate-of-rise thermal detection in a low profile package. Model 5251H provides fixed high temperature detection at 190ºF. These thermal detectors provide cost effective, intelligent property protection in a variety of applications.

Specification
Height : 2.0 inches (51mm)
Diameter

6.1 Inches installed in B210LP base

4.1 inches (104 mm) installed in B501 base

Shipping Weight

Heat 4.8 oz. (136 g)

Photo/photo with heat 5.2oz. (147 g) ion 5.4 oz. (153 g)

Operating Temprature Range

Ion Photeo : 32-120⁰F (0-49⁰C)

Photo with Thermal 32-100⁰F (0-38⁰C)

Thermal : -4-100⁰F (-20-38⁰C)

High Temprature : -4-150⁰F (-20-66⁰C)

UL Listed Velocity Range

Ion : 0 - 1200 fpm (0 - 6.1 m/sec)

Photo with Thermal : 4000 fpm

Suitabe For Installation in ducts
Insect Screen Hole Size

Photo : 0.016 inch (0.41mm) nominal

Ion : 0.035 Inch (0.8mm) nominal

Relative Humidity : 10-93% noncondensing
Thermal Rating

Fixed Temprature Setpoint : 135⁰F (57⁰C)

Rate of Rise Detection : 15⁰F/min (8.3⁰C/min.)

High Temprature Heat : 190⁰F (88⁰C)

Voltage Range : 15-32 Volts DC Peak
Standby Current (Max. Avg.)

Ion/Thermal : 150 pA @ 24 VDC (without communication, LED off) 200 pA @ 24 VDC (one communication every 5 sec. with LED enabled)

Photo/Photo With Thermal : 250 pA @ 24 VDC (without communication LED off), 300 pa @ 24 VDC (one communication every 5 sec. with LED Enables)

LED Current (Max.) : 6.5 mA @ 24 VDC (on)