Document: LT0273

MX4428 MXP Engineering / Technical Manual

 

Device Information and Programming

3.10 814CH CARBON MONOXIDE + HEAT DETECTOR

3.10.1GENERAL

The 814CH is a carbon monoxide (CO) detector which also includes a temperature sensor. The detector senses the amount of CO present and the temperature and sends these values to the MXP. The MXP makes any decisions as to whether this is an alarm, fault, normal or whatever, based on the CO level, temperature, or rate of rise of temperature, and/or a combination of these. The integral LED is turned on by the MXP when an alarm is detected.

Refer to the specifications of the 814H for more details on the heat sensing element of the 814CH.

The remote LED and functional base outputs are programmable for their functionality (refer to section 3.3).

3.10.2814CH SPECIFICATIONS

Line Connections

L(–), L1(+)

Supply Voltage

20Vdc - 40Vdc

Supply Current

275uA (typical quiescent)

Alarm Current

3.0mA (typical)

Remote LED Current

7mA (typical Tyco E500Mk2)

Dimensions

110mm (diameter) x 55mm (including MUB base)

Weight

88g

Base

MUB, 5B, 5BI, 814RB, 814SB, or MkII Sounder Base

3.10.3MX4428 PROGRAMMING OPTIONS - 814CH

The programmable values for the 814CH are described in the following tables.

The mode selects the detection mode for the detector - CO only, enhanced CO, heat enabled or disabled, heat rate of rise enabled or disabled, etc. Note that when a particular function is disabled by the setting of the mode, the parameters relating to that function are not used and should therefore be left with their default settings.

Parameter 1 selects the CO alarm threshold. Some possible settings are shown in the table. Note the alternate setting of 66ppm is not an SSL listed setting for an ionisation detector (the 814CH was SSL tested using the tests for an ionisation detector under AS1603.2, as at the time there was no approved standard for CO detector). Although this setting is acceptable for a CO detector it should only be used for special applications where installation conditions exclude other smoke detectors and yet the background CO level may be higher than normal. At this sensitivity the background CO level should not exceed 30ppm.

Parameter 3 may be adjusted to vary the fixed temperature alarm threshold. It may be set to any value between 60 and 65 in Australia.

Parameter 2 may be adjusted to select a different Pre-Alarm temperature.

Parameter 6 selects the functional base and remote LED output operation (refer to section 3.3) and the “enhancement multiplier” which should normally be left at the default value (12).

Issue 1.5

24 March 2006

Page 3-23

Page 38 Page 40
Page 39
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Tyco 10 814CH Carbon Monoxide + Heat Detector, 10.2 814CH Specifications, 10.3 MX4428 Programming Options 814CH
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MX4428 specifications

The Tyco MX4428 is a cutting-edge device known for its robust performance in the realm of wireless communication and sensor acquisition. Tailored for applications in various sectors, the MX4428 is particularly well-suited for industrial automation, environmental monitoring, and smart city initiatives. With its advanced features, the device has gained tremendous popularity among engineers and developers looking for reliability and efficiency in data transmission.

One of the standout features of the MX4428 is its exceptional range, which can extend up to several kilometers under optimal conditions. This long-range capability ensures that data can be transmitted over vast distances without degradation in quality, making it ideal for remote monitoring applications. Additionally, the device operates on multiple frequency bands, providing flexibility in deployment based on specific regional requirements and regulatory guidelines.

The MX4428 utilizes a highly efficient radio protocol that enhances data throughput while reducing power consumption. This asymmetric data transmission method allows for low-duty cycle operation, extending battery life and autonomy. The device's energy efficiency is particularly beneficial in applications where frequent battery replacement would be impractical, such as in environmental sensors and agricultural monitoring systems.

Furthermore, the MX4428 is equipped with comprehensive sensor integration capabilities. It can seamlessly interface with various sensors, making it a versatile choice for collecting a wide range of data types. From temperature and humidity sensors to motion detectors, the MX4428 can serve as a central hub for data gathering and transmission, providing real-time insights into environmental conditions.

Security is also a paramount consideration in the design of the MX4428. It incorporates robust encryption and authentication protocols to safeguard data integrity during transmission. This feature is crucial for applications involving sensitive information or those that require compliance with strict regulatory frameworks.

In summary, the Tyco MX4428 is a powerful and versatile device that boasts a combination of long-range communication, low power consumption, and comprehensive sensor integration capabilities. Its robust security features further enhance its appeal for critical applications across various industries. Whether for industrial, environmental, or smart city use cases, the MX4428 stands out as a reliable solution that meets the demands of modern wireless communication landscapes.
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