I. Product overview
920E addressable heat detector (Detector hereunder) is a mated product of the 9000 series fire alarm control panels. It uses a two-bus work mode. With an internal microprocessor, it supports electronic coding. The detector realizes real-time acquisition of the in situ temperature data and sends back the data to a fire alarm control panel. It can also receive and execute the control commands given by a fire alarm control panel. When in a routing inspection, the detector indicator will blink. When there is a fire in the monitored area and the temperature has reached the alarm threshold, the fire alarm control panel will confirm a fire alarm according to the received message sent from the detector, and the detector indicator will light at the same time to indicate a fire alarm.
The detector is suitable for such industrial and civil buildings that have a great deal of heat when fire takes place, such as kitchens, boiler rooms, generator rooms, drying workshops and smoking rooms and is not suitable for places with a great deal of smoke but little heat.
II. Product features
- It can realize electronic coding and rewrite the address via coder in situ.
- Within a single-chip microcomputer, it can realize real-time data acquisition and processing, realize a curve tracing for the field situation.
- It has a temperature compensation function and a sensor fault detection function (fault reporting to fire alarm control panel).
- Non-polarity, two-bus connection that ensures convenient installation and maintenance.
- Designed with an upper cover and a lower cover and installed on an independent base, it can be installed, debugged and maintained conveniently.
III. Technical parameters
- Executive standard: GB4716-2005
- Operating voltage: 24V (pulse modulation)
- Operating current: ＜300uA (monitoring status) or ＜1.5mA (alarm status)
- Work indication: The red indicator will blink in the monitoring status or remain lit in the alarm status.
- Weight: about 47g
- Product class: A2
- External dimensions: diameter: 100mm, height: 56mm (with the base)
- Wiring method: non-polarity two-bus system (L1, L2)
- Operating environment: Indoor, temperature: －10℃～+50℃; relative humidity: ≤95% (40℃±2℃, without condensation)
- Coding mode: It can realize electronic coding via coder in situ. Address codes 1 to 324 are available for selection.
- Installation height: ≤8m
- Protection area: about 60m2. For details, see related provisions in GB50116-98 Code for Design of Automatic Fire Alarm System.
- Matched host machine: fire alarm control panel (such as MN300)
