Fireboy Xintex Rate of Rise Heat Detector w/Base [OMHD 04 DB R]

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Description

Rate-of-Rise Heat Detector with Base

The Fireboy-Xintex Heat Detector uses a single thermistor to sense the air temperature around the detector. This heat detector was designed to detect how fast the temperature is increasing.

Features:

163°F Rate-of-Rise Heat Detector

Housing: White flame-retardant polycarbonate

Terminals: Nickel-plated stainless steel

Ideal in environments that are dirty or smoky

Unaffected by wind or atmospheric pressure

Remote test feature

Specifications:

Detection Principle: Measurement of heat using a thermistor

Sampling Frequency: Once every four seconds

Supply Voltage: 8.5 V dc to 33 V dc

Supply Wiring: Two wire supply, polarity sensitive

Power-up Time: < 20 seconds

Minimum: ‘detector active’ voltage: 6 V

Holding Voltage: 5 V - 33 V

Minimum Holding Current: 8 mA

Minimum Voltage to Light Alarm LED: 5 V

Alarm Reset Voltage: < 1 V

Alarm Reset Time: One second

Alarm Indicator: Integral indicator with 360º visibility

Operating & Storage Temperature: -40ºC to +70ºC

Operation:

Open-web casing that enables air to flow freely across a thermistor which measures the air temperature every two seconds

A microprocessor stores the temperatures and compares them with pre-set values to determine whether a fixed upper limit - the alarm level - has been reached