59000-405

Стандартный тепловой детектор, 59000-405

Operating Principles

The XPlorer heat detectors have a low air flow resistance case made of self-extinguishing white polycarbonate. The devices monitor temperature by using a single thermistor network which provides a voltage output proportional to the external air temperature.
The response to heat increases of the standard heat detectors, Part Nos 59000-405 and 59000-406, enables the detector to be utilised as an EN54–5:2000 A2S heat detector, which is equivalent to an EN54–5:1984 Grade 2 detector.
A high temperature heat detector, Part No 59000-415 (with standard base) or 59000-416 (with LED driver base), which has similar characteristics at 25°C but reaches a 55 count at 90°C, is available for use in normal ambient temperatures of up to 55°C. This detector meets the requirements for a CS detector in EN54–5:2000.

Electrical Description

The detector is designed to be connected to a two wire loop circuit carrying both data and a 17V to 28V dc supply. The detector is connected to the incoming and outgoing supply via terminals in the mounting base. Connection is polarity sensitive.
A remote LED driver base is also available. In addition to the supply terminals a connection for a remote LED is provided. The remote LED is connected between the positive supply line of the base and the remote negative terminal. The negative connection incorporates a 4.3kΩ limiting resistor to protect the loop from accidental short circuit remote wiring. The LED current should be limited to 4mA.
When a device is energised the ASIC regulates the flow of power and controls the data processing. The thermistor provides an output over normal operating ranges that, in the case of the standard detector, is proportional to the external air temperature. This voltage output is processed in the A/D converter and stored by the communications ASIC. It is transmitted to control equipment when the device is interrogated. The detector is calibrated to give an analogue value of 25±5 counts at 25°C.
The high temperature heat detector operates in a very similar manner, but the 55 count alarm threshold indicates a temperature of 90°C.

Environmental Characteristics

XPlorer standard heat detectors operate over the range –20°C to +70°C. The high temperature heat detectors operate over the range –20°C to +120°C. The detectors are unaffected by atmospheric pressure.

ТЕХНИЧЕСКИЕ ХАРАКТЕРИСТИКИ

Address Range:	1–63 (6 bits)
Detector Type:	Fixed Temperature Heat
Detection Principle:	Temperature sensitive resistance
Sensor:	Single NTC Thermistor Sampling Frequency: Continuous
Sampling Frequency:	Continuous
Supply Wiring:	Two wire supply, polarity sensitive
Detector Terminal Functions:	Supply positive and negative in and out connections (polarity sensitive). Remote indicator connection to LED driver base
Supply Voltage:	17 to 28 Volts dc
Quiescent Current:	300μA at 24V
Power-up Surge Current:	1mA
Duration of Power-up Surge Current:	1 second
Maximum Power-up Time:	4 seconds
Storage Temperature:	-30°C to +80°C
Min Continuous Operating Temperature:	-0°C
Min Operating Temperature (no condensation or icing):	-20°C
Alarm Level:	55 counts
Alarm Indicator:	Red Light Emitting Diode (LED)
Alarm LED Current:	2mA
Remote LED Base Connection:	4.3kΩ connected to negative line
Type Code:	(210 43) 110 00
Sensitivity:	25°C to 90°C: 1°C/Count -20°C returns 8 counts
Humidity: (No condensation)	0% to 95% relative humidity
Wind Speed:	Unaffected by wind
Atmospheric Pressure:	Unaffected
Vibration, Impact & Shock:	To EN54–7:2000
IP Rating:	43
Dimensions: (diameter x height)	Detector: 100mm x 39mm Detector in Base: 100mm x 47 mm
Weights:	Detector: 100g Detector in Base: 157g
Materials:	Detector Housing: White polycarbonate V-0 rated to UL 94 Terminals: Stainless Steel