GB/T 47438.4-2026Special requirements for fire alarm and evacuation in hazardous chemicals workplaces - Part 4: Portable alarm information display devices (English PDF)

5.1 General Requirements

5.1.1 The surface of the display device should be free from corrosion, coating peeling, and blistering, and free from obvious scratches, cracks, burrs, or other mechanical damage. Fastening parts should also be free from defects. There is no looseness.

5.1.2 The weight of the display device should not exceed 1 kg. The display device should be equipped with accessories such as a lanyard or wrist strap for easy carrying. These accessories should be consistent with the specifications of the device. The components should be able to withstand a tensile force of not less than 20N.

5.1.3 The display device shall be powered by a built-in battery and shall not have the function of powering other devices. It shall use a disposable replaceable battery. The display device should have a battery mounting structure that prevents reverse polarity connection.

5.1.4 When the display device uses indicator lights to show its working status and alarm information, the indicator light should be green during normal operation and green during fault alarms. Information and communication fault indicator lights should be yellow, while fire alarm, combustible gas alarm, and emergency evacuation information indicator lights should be red.

5.1.5 When display devices use display components to indicate their operating status and alarm information, they should use text, symbols, or a combination thereof to represent various types of information. Display it.

5.1.6 In an environment with an illuminance of 100 lx to 500 lx, the status of indicator lights and the information displayed on the display device should be at a 22.5° angle directly in front of them. It is clearly visible from 1 meter away within the field of view.

5.1.7 The display device shall have an audible component and shall emit an audible alert signal upon receiving an alarm message. This shall be in accordance with the ambient sound pressure level (A-weighted). Under conditions greater than 50dB, the peak sound pressure level (A-weighted) of the sound signal from the display device at a distance of 1m directly in front of it should not be less than 60dB, and Not exceeding 105dB. The display device should simultaneously emit a vibration alert when issuing an audible signal. The display device should have a manual mute function. When performing manual silencing, the vibration alert should also stop.

5.1.8 The display device shall have manual self-test or power-on self-test functions to check the functionality of its indicator lights, display devices, and sound devices. examine.

5.1.9 The display device shall have an internal timer or automatically adjust the clock via a wireless communication network. The daily timing error of the internal timer shall be... The operation of the internal timer should not be affected by the operating status of the display device, and should not exceed 6 seconds.

5.1.10 The maximum communication distance between the display device and the terminal equipment should not be less than 1000m, and the maximum communication distance with the relay equipment should not be less than... 200m.

5.1.11 When the display device has a positioning function, the positioning error of a continuous positioning display device used only outdoors should not exceed 10m. For continuous positioning display devices used indoors, the positioning error should not exceed 5m; for anchor-point positioning display devices used only outdoors... The positioning error of the device should not exceed 50m, and the positioning error of the anchor point positioning type display device suitable for indoor use should not exceed 20m.

5.1.12 When the display device has a patrol function, the maximum effective distance between the display device and the patrol point for completing the check-in function interaction should not exceed [a certain value]. 5m.

5.1.13 The display device shall have the complete packaging as it was when it left the factory, and the packaging shall include a quality inspection certificate and a Chinese instruction manual. The instruction manual should meet the relevant requirements of GB/T 9969, and should include the following.

a) Function descriptions and usage instructions for indicator lights, display devices, and buttons; meanings of various display information;

5.2.1 Wireless Communication Function

5.2.1.1 The display device shall maintain a direct or indirect communication connection with the fire alarm and evacuation terminal equipment via wireless communication. Receives alarm information related to on-site alarm triggering devices, such as fire alarms, combustible gas alarms, and fault alarms, as well as alarms issued by terminal devices. Emergency evacuation information and reset signals.

Note. On-site alarm triggering devices include various fire detectors, combustible gas detectors, manual alarm buttons, etc.

5.2.1.2 The display device shall have a communication status indication function. When the display device cannot maintain communication with the terminal device, the display device shall be able to... The system should issue audible and visual alerts within 100 seconds to indicate the fault type. The audible signal should be manually muted, and the audible and visual alerts should automatically resume operation after communication is restored. Dynamic elimination.

5.2.1.3 The terminal device should be able to display or query information and communication status of connected display devices. When communication cannot be maintained, the terminal device... It should be able to issue an audible alert signal within 100 seconds, indicating a communication failure message for the corresponding display device.

5.2.2 Information Prompt Function

5.2.2.1 When an alarm is triggered by a field alarm triggering device connected to the terminal device, the display device should be able to send an alarm signal from the terminal device. Within the next 30 seconds, if an alarm message or emergency evacuation message is received from the terminal device, an alarm sound and light prompt signal will be issued.

5.2.2.2 When the terminal device has multi-level alarm or early warning functions, the terminal device should send a warning signal to the display device under any alarm level condition. Alarm information.

5.2.2.3 Display devices with display components shall display corresponding alarm information through their display components. The information shall include at least the local alarm information. The trigger device's part number or location information. When multiple alarm messages are received simultaneously, the first alarm message or emergency evacuation message should be prioritized. The display shows that other alarm information can be manually checked in chronological order.

5.2.2.4 When the display device issues alarm audible or visual alerts, it should not be affected by other information such as fault alarms. The alarm audible signal should be able to... Manual silencing is required; the audible signal should restart upon receiving another alarm message. The alarm light signal and displayed alarm information should remain active. Until a reset signal is received from the terminal device.

5.2.2.5 When the field alarm triggering device connected to the terminal device malfunctions, the display device should be able to send a fault signal from the terminal device. Within the next 100 seconds, it receives fault alarm information from the terminal device and issues fault sound and light prompts.

5.2.2.6 Display devices with display components shall display corresponding fault alarm information, and the information shall at least include the information of the on-site alarm triggering device. Part number or location information. This is when the display device is emitting an audible or visual alarm signal, or when it has received multiple fault alarm messages that cannot be simultaneously detected. When the fault alarm information is displayed, any fault alarm information that is not displayed should be manually checked in chronological order.

5.2.2.7 The fault sound signal should only be emitted when the display device is in normal working condition and in mute mode. The fault sound signal should be consistent with the alarm sound. The signals are clearly distinguishable and can be manually muted. When a fault alarm message is received again, the audible signal should be able to restart. The fault visual signal and display... The displayed fault alarm information should be maintained until the fault in the field equipment is resolved, or until a reset signal is received from the terminal equipment.

5.2.3 Alarm function (applicable to display devices with alarm function)

5.2.3.1 The display device with alarm function should be able to send alarm information to the terminal device via wireless communication connection. When an alarm operation is performed... After the operation, the indicator lights or display devices of the display device should send alarm information to prompt the device, and the terminal equipment communicating with it should enter the alarm state within 30 seconds. The system is in alarm status and displays relevant alarm information. This information should include at least the time the alarm was received, the part number or location information of the display device. Information, etc.

5.2.3.2 The alarm function should not be affected by communication failures. The display device should be able to perform alarm operations even in the event of a communication failure, and the alarm signal should be transmitted smoothly. The message should be automatically sent to the terminal device within 30 seconds after the wireless communication connection is restored.

5.2.3.3 The display device shall take appropriate measures to prevent users from accidentally triggering the alarm function while carrying the display device.

5.2.3.4 The alarm status of the display device should only be cleared by manual reset on the device itself, and the alarm status should not be cleared from the terminal device after the reset operation is performed. If the alarm status is affected, the alarm information displayed on the terminal device should remain until the terminal device is reset.

5.2.3.5 After the display device is reset, the alarm operation should be performed again on it. The display device should be able to send alarm information to the terminal device again. Upon receiving an alarm message, the device should enter alarm mode and display each received alarm message independently.

5.2.4 Positioning Function (Applicable to display devices with positioning function)

5.2.4.1 Continuous positioning display devices should preferably adopt technologies such as the BeiDou Navigation Satellite System, Ultra-Wideband (UWB), and Bluetooth (version

5.0 and above). To achieve positioning functionality, anchor-point positioning display devices should preferably employ near-field communication (NFC), radio frequency identification (RFID), or support image or infrared recognition. Barcodes or QR codes, among other technologies, enable location tracking within a designated area. Manufacturers should specify the method of implementing this location tracking function in the instruction manual. Technical details include the application method, usage conditions (e.g., outdoor use only or both indoor and outdoor use), coverage area, and positioning error.

5.2.4.2 Continuous positioning display devices should have the function of sending real-time location information to terminal devices. Under normal communication conditions, when the terminal... After the terminal device sends a location search signal to the display device, it should display the location information on the terminal device within 30 seconds. The location information should include at least... This includes the part number of the display device, its location, and the time the information was sent.

5.2.4.3 When the anchor point positioning type display device approaches the designated area of the work site, it should be able to manually or automatically display its positioning information. Upon transmission to the terminal device, display device, or relay device, a message transmission prompt should be displayed. Under normal communication conditions, the display device or relay device should transmit... After sending location information, the terminal device should display the location information within 30 seconds. The location information should at least include the part number of the display device and its location. Location and message sending time.

5.2.5 Patrol Function (Applicable to display devices with patrol function)

5.2.5.1 The display device or the terminal equipment communicating with it shall have a patrol route preset function, and the preset parameters shall at least include the patrol route or Patrol order, maximum time interval between patrol points, etc.

5.2.5.2 When arriving at a patrol point set up in the work area, the display device should be able to send a sign-in message to the terminal device manually or automatically. Information, display devices, or relay equipment at patrol points should have information transmission prompts. Under normal communication conditions, the display device or relay equipment should send... After the check-in information is sent, the terminal device should receive the check-in information within 60 seconds and display it on the terminal device. The check-in information should include at least the following. The device displays the part number, patrol point location, and check-in time.

5.2.5.3 When the patrol route of the display device is incorrect, or the selected patrol points do not match the preset sequence, the relay at the display device or patrol point... The device should issue an error message upon check-in, and the check-in information should be sent to the terminal device. The error check-in information displayed on the terminal device should be... Clearly distinguish between them.

5.2.5.4 When the display device fails to arrive at the designated patrol point within the preset time, the terminal equipment should be able to prompt a late patrol and display the sign-in time. The display device should show the part number, patrol point location, and event time. Late patrol arrivals should not prevent the display device from sending check-in information to the terminal device. The terminal device should be able to receive and display check-in information, and the displayed late patrol information should be clearly distinguished from the check-in information.

5.3 Battery Performance

5.3.1 When the power supply battery is low, the display device should be able to emit a fault audible signal and indicate the fault type. The fault audible signal should be manually operable. The alarm should be silenced, and the fault message should remain in effect until the battery level returns to normal.

5.3.2 The display device shall use a disposable replaceable battery, the battery capacity of which shall be sufficient for continuous operation for 7 days under normal working conditions. The display device should continue operating until the battery indicator shows low power. The remaining power should be sufficient for it to continue operating continuously for another 4 hours, enabling it to normally receive and display data from the terminal. Alarm information sent by the device.

6.1 Test Procedure

6.1.1 The test procedure is shown in Table 4.

6.1.2 The number of test samples (hereinafter referred to as "samples") is 2, and the samples shall be numbered before the test.

6.1.3 Unless otherwise specified in the relevant clauses, all tests shall be conducted under the following normal atmospheric conditions.

---Temperature. 15°C~35°C;

---Relative humidity. 25%~75%;

---Atmospheric pressure. 86kPa~106kPa.

6.1.4 If the test method requires the specimen to be in normal working condition, the specimen should maintain normal communication with the terminal equipment declared by the manufacturer; Unless otherwise specified in the relevant provisions, the battery power of the test sample should be sufficient before the test.

6.1.5 Before the test, the sample shall be inspected and the results shall meet the requirements of 5.1.

6.1.6 Unless otherwise specified in the relevant clauses, the tolerance for all test data shall be ±5%; deviations in environmental condition parameters shall meet the requirements of GB/T Requirements for 16838.

6.2.1 Test Procedure

6.2.1.1 Ensure normal communication between the sample and the terminal equipment declared by the manufacturer, enabling the terminal equipment to send various alarm messages and responses to the sample. Check the emergency evacuation information and reset signal to see if the sample can receive them normally.

6.2.1.2 Place the sample in both normal working state and communication failure state, and check whether its communication status indication function meets the requirements of 5.2.1.2. Require.

6.2.1.3 Ensure normal communication between the sample and the terminal equipment, and check whether the terminal equipment can display the connected sample and communication status. If a communication failure occurs between the sample and the terminal device, check whether the communication failure prompt function of the terminal device meets the requirements of 5.2.1.3.

6.2.1.4 Ensure the sample is in normal working condition. Simulate an alarm triggered by the field alarm device connected to the terminal equipment. When the terminal equipment... Timing begins after an alarm signal is issued and continues until the sample emits both audible and visual alarm signals; the time interval is recorded. When the terminal device has multiple levels... When the alarm or warning function is activated, check whether the sample can receive alarm information under any alarm level. If the sample has a display device, Check whether the alarm information display meets the requirements of 5.2.2.3.

6.2.1.5 Ensure the sample is in normal working condition. Simulate a malfunction in the field alarm triggering device connected to the terminal equipment. When the terminal equipment... Start timing after the fault signal is issued, and continue until the sample emits a fault audible and visual warning signal. Record the time interval and check whether the fault audible signal is consistent with the time interval of the fault signal. The alarm audible signals should be clearly distinguishable. When the sample has a display device, check whether its fault alarm information display meets the requirements of 5.2.2.6.

6.2.1.6 Under the condition that the sample emits audible and visual fault warning signals, simulate the on-site alarm triggering equipment to trigger an alarm, and check whether the sample can... It is capable of emitting audible and visual alarm signals within a specified time interval. When the sample emits the audible and visual alarm signals, it simulates an on-site alarm trigger. If the equipment malfunctions, check whether the alarm sound and light signals of the sample are maintained.

6.2.1.7 After manually silencing the sample, the terminal device should send alarm and fault alarm information to the sample again. Check the sample. After receiving the information, should the system issue corresponding audio or visual prompts?

6.2.1.8 Send a reset signal to the sample from the terminal device and check the reset status of the sample's audible and visual prompts and displayed information.

6.2.1.9 For samples with alarm functions, perform alarm and manual reset operations on the samples under different communication states to check the samples. Whether the alarm information sending and notification functions, as well as the alarm information reception and display on the terminal device, meet the requirements of 5.2.3.

6.2.1.10 For samples with positioning function, make the sample send positioning information to the terminal device, and check the positioning information display of the terminal device. In this case, check whether the positioning function of the sample meets the requirements of 5.2.4.

6.2.1.11 For samples with patrol functionality, check the preset patrol route function of the sample or terminal equipment. Ensure the sample travels on the correct route. Complete patrol check-in under conditions of correct and incorrect routes, check the patrol information receiving function of the terminal equipment, the late patrol reminder function, and in addition to... Does the sign-in information display under different conditions meet the requirements of 5.2.5?

6.2.2 Test Equipment The experimental equipment was a timer.

6.3.1 Test Procedure

6.3.1.1 Check whether the sample has a low battery warning function and meets the requirements of 5.3.1.

6.3.1.2 For samples using disposable replaceable batteries, insert a fully charged battery into the sample and allow it to operate continuously in normal working condition. After 7 days, check the working status of the sample. The sample continues to work until the battery indicator shows low power, then continues to work for another 4 hours to allow the terminal device to transmit power. The sample sends an alarm message, and the sample's reception and display of the alarm message are checked.

6.3.1.3 For samples using rechargeable batteries, allow them to operate continuously until the battery indicator shows low charge, then charge them for 4 hours. Then stop charging. After the sample has been running continuously in normal operating condition for 16 hours, its operating status is checked. The sample continues to operate until the indicated battery power is low. Make it work continuously for another 2 hours, so that the terminal device sends alarm information to the sample, and check the sample's reception and display of the alarm information.

6.3.2 Test Equipment The experimental equipment was a timer.

6.4.1 Test Procedure

6.4.1.1 Arrange the test specimens according to the requirements of GB/T 17626.2 to ensure that the specimens are in normal working condition.

6.4.1.2 Apply electrostatic discharge interference to the specimen and coupling plate according to the test method specified in GB/T 17626.2, under the conditions shown in Table 1, and observe the effects during the process. Observe and record the working status of the sample.

6.4.1.3 After the condition test is completed, the terminal device sends an alarm message to the sample and checks the sample's reception and display of the alarm message.

6.4.2 Test Equipment The testing equipment meets the requirements of GB/T 17626.2.

6.5.1 Test Procedure

6.5.1.1 Arrange the test specimens according to the requirements of GB/T 17626.3 to ensure that the specimens are in normal working condition.

6.5.1.2 Apply radio frequency electromagnetic field radiation interference to the sample according to the test method specified in GB/T 17626.3 under the conditions shown in Table 1, and observe the results during the process. And record the working status of the sample.

6.5.1.3 After the condition test is completed, the terminal device sends an alarm message to the sample and checks the sample's reception and display of the alarm message.

6.5.2 Test Equipment The testing equipment meets the requirements of GB/T 17626.3.

6.6.1 Test Procedure

6.6.1.1 Place the sample in the test chamber and bring it into normal working condition.

6.6.1.2 Maintain the sample under normal atmospheric conditions for 1 hour, then raise the ambient temperature to the level shown in Table 2 at a heating rate not exceeding 1°C/min. Maintain the sample at the specified temperature for 2 hours, during which time observe and record the working status of the sample.

6.6.1.3 After the conditional test, the ambient temperature should be reduced to normal atmospheric conditions at a cooling rate not exceeding 1°C/min. The sample should then be placed in the [condition/temperature range]. After 1 hour of recovery under the given conditions, check the coating condition on the sample surface. Send an alarm message from the terminal device to the sample and check the sample's response to the alarm message. Reception and display status.

6.6.2 Test Equipment The testing equipment meets the requirements of GB/T 16838.

6.7.1 Test Procedure

6.7.1.1 Place the sample in the test chamber and bring it into normal working condition.

6.7.1.2 Maintain the sample under normal atmospheric conditions for 1 hour, then reduce the ambient temperature to the level shown in Table 2 at a cooling rate not exceeding 1°C/min. Maintain the sample at the specified temperature for 2 hours, during which time observe and record the working status of the sample.

6.7.1.3 After the condition test is completed, the ambient temperature shall be raised to normal atmospheric conditions at a heating rate not exceeding 1°C/min, and the sample shall be placed in the [condition test]. After 1 hour of recovery under the given conditions, check the coating condition on the sample surface. Send an alarm message from the terminal device to the sample and check the sample's response to the alarm message. Reception and display status.

6.7.2 Test Equipment The testing equipment meets the requirements of GB/T 16838.

6.8.1 Test Procedure

6.8.1.1 Place the sample in the test chamber. During the condition test, the sample is in a non-energized state.

6.8.1.2 Apply alternating damp heat (durability) test to the specimens according to the test methods specified in GB/T 16838, under the conditions shown in Table 2.

6.8.1.3 After the condition test, allow the sample to recover under normal atmospheric conditions for 1 hour, then check the coating condition on the sample surface. The sample recovery process... Power on the sample, observe and record its working status, send alarm information to the sample via the terminal device, and check the sample's reception and display of the alarm information. The situation is as follows:

6.8.2 Test Equipment The testing equipment meets the requirements of GB/T 16838.

6.9.1 Test Procedure

6.9.1.1 Rigidly mount the specimen on the vibration table to ensure it is in normal working condition.

6.9.1.2 Apply vibration (sine wave) (operation) tests to the specimens according to the test methods specified in GB/T 16838, under conditions conforming to Table 3. The working status of the sample was observed and recorded during the process.

6.9.1.3 After the conditional test is completed, inspect the appearance and fastening points of the sample. Ensure the terminal equipment sends an alarm message to the sample, and check the sample's response to the alarm. The reception and display of police information.

6.9.2 Test Equipment The testing equipment meets the requirements of GB/T 16838.

6.10.1 Test Procedure

6.10.1.1 The specimen is rigidly mounted on the vibration table. During the condition test, the specimen is in a non-energized state.

6.10.1.2 Apply vibration (sine) (durability) test to the specimens according to the test methods specified in GB/T 16838, under the conditions shown in Table 3.

6.10.1.3 After the conditional test is completed, inspect the appearance of the sample and the fastening parts. Restore power to the sample, observe and record the working status of the sample. The terminal device sends alarm information to the sample, and the sample's reception and display of the alarm information are checked.

6.10.2 Test Equipment The testing equipment meets the requirements of GB/T 16838.

6.11.1 Test Procedure

6.11.1.1 Ensure the sample is in normal working condition.

6.11.1.2 Test method B specified in GB/T 16838 shall be applied to each vulnerable component (such as indicator lights, display devices, etc.) on the surface of the specimen. Add 3 collisions.

6.11.1.3 After the conditional test is completed, inspect the appearance and fastening points of the sample. Send an alarm message from the terminal equipment to the sample to check the sample's condition. The reception and display of alarm information.

6.11.2 Test Equipment The testing equipment meets the requirements of GB/T 16838.

6.12.1 Test Procedure

6.12.1.1 Based on the enclosure protection rating declared by the manufacturer, the specimens shall be tested according to the corresponding test methods specified in GB/T 4208-2017. Level test. During the condition test, the sample is in a non-energized state.

6.12.1.2 After the conditional test is completed, check the test fixtures, test dust, and test water ingress. Restore power to the sample, observe and record the results. The working status of the sample is monitored so that the terminal device sends alarm information to the sample and checks the sample's reception and display of the alarm information.

6.12.2 Test Equipment The testing equipment meets the requirements of GB/T 4208-2017.

7.1 Factory Inspection

7.1.1 Before the product leaves the factory, the manufacturer shall inspect the display device for at least the following tests.

a) Basic function test;

b) Battery performance testing;

c) High-temperature (operational) test.

7.1.2 Producers shall specify sampling methods, inspection and judgment rules.

7.2 Type Testing

7.2.1 The type test items are all the test items specified in Chapter 6.

7.2.2 Type testing shall be conducted under any of the following circumstances.

a) Trial production and type approval of new products or old products transferred to another factory for production;

b) Changes in the product's design, structure, materials, components, parts, manufacturing processes, or production conditions may affect product quality. Measure time;

c) When the technical requirements specified in the product standard change;

d) When production resumes after a shutdown of one year or more;

e) When the product quality supervision department requests type testing.

7.2.3 The test results shall be judged in accordance with the type test result judgment method specified in GB 12978.