Need help?Do you have a question about the FORENSICS DETECTORS 90E and is the answer not in the manual?
Access and adjust settings like alarms, calibration, time, and shutdown via the user menu.
Details on how to properly turn off the gas detector using two distinct methods.
Explanation of icons and status indicators on the LCD screen for device feedback.
Step-by-step guide on how to power on the portable gas detector.
Guide to navigating the detector's menu for various operations and settings.
Instructions on how to charge the detector's battery using the provided charger.
The 90E portable gas detector is a sophisticated instrument designed for the precise detection of combustible gas leaks. It employs a high-quality Japanese semiconductor sensor and an embedded microcontroller to ensure high sensitivity and rapid reaction time to gas leaks. This device is engineered for durability and reliability, featuring a waterproof, dustproof, and explosion-proof design, making it suitable for use in demanding environments. Its ease of use further enhances its practicality across various industrial and professional settings.
The primary function of the 90E gas detector is to identify and quantify the presence of combustible gases in the surrounding environment. It is particularly useful in industries such as oil, coal, municipal construction, chemical engineering, environmental protection, metallurgy, refining, gas transmission and distribution, biochemistry, agriculture, and pharmaceuticals. The detector's ability to provide accurate readings in parts per million (ppm) allows for precise monitoring of gas concentrations.
One of the key usage features of the 90E detector is its "turn on and go" functionality, as it comes factory calibrated. This means users can immediately begin operation without the need for initial calibration steps, saving time and ensuring readiness for immediate use. The device incorporates multiple alarm mechanisms to alert users to potential hazards. These include adjustable audio, visual (LED light), and vibration alarms, which activate when preset gas concentration levels are reached. This multi-modal alarming system ensures that users are promptly notified of dangerous conditions, even in noisy or visually obstructed environments.
The detector is equipped with a large, color LCD screen that displays critical information, including temperature, time, and the current gas concentration value. This clear display enhances readability and allows users to quickly assess the situation. The interface also provides status indicators, such as "Norm." for normal operation, "Low voltage" for battery status, and "Sound" or "Muting" for audio settings.
Operating the device is straightforward. To power on, the user presses and holds the designated button for three seconds. Upon activation, the device performs a series of self-tests, including "Welcome Starting," "LED Testing," "Motor Testing" (vibration), and "Sound and Alarm Testing" (beep and flash). After a 60-second warm-up period, the detector enters its normal detecting status, displaying the combustible concentration in the environment.
The menu system is intuitive, allowing users to access various settings and information. The main menu includes options such as "Clear," "Muting," and "Info." The "Clear" function allows the instrument to enter a clear state, saving the displayed value. The "Muting" option enables users to toggle between silent and sound modes for the alarms. The "Info" section provides status information, including battery power, low and high alarm values, and the detection range.
Advanced settings can be accessed by pressing and holding the main button for two seconds. These options include "Low alarm set," "High alarm set," "Gas calibration," "Time set," and "Shutdown." Users can adjust the low and high alarm thresholds by navigating through the digits and using the increase/decrease buttons. The time setting allows for adjustment of the date and time displayed on the screen. Gas calibration is a special operation that requires contacting Forensics Detectors for assistance, indicating a more complex procedure that may require expert guidance.
The device also provides clear visual and auditory indicators for different alarm states. A "LOW alarm" is indicated by a slow drop alarm sound, a slowly blinking red alarm light, and vibration. A "HIGH alarm" triggers a rapid drop alarm sound, a rapidly flashing red alarm light, and rapid vibration. An "OVERRUN alarm" signifies that the gas concentration has exceeded the maximum detectable limit, prompting a continuous alarm sound and backlight illumination.
Maintenance features primarily revolve around battery management and general care. The device is powered by a rechargeable lithium battery (DC3.7V 1800mAH). Charging takes approximately 6 to 8 hours. It is crucial to turn off the detector before charging to prevent potential damage. The battery mark on the screen indicates when charging is complete. The manual explicitly warns against charging the detector while it is on or at a leak detection site, as sparks from plugging/unplugging the charger could cause explosions.
For general maintenance, users are advised to clean the detector's surface lightly with a clean, soft cloth after long-term use, avoiding caustic solvents or hard objects. It is also important to prevent dropping the detector and excessive vibrations, as these can impact its performance and durability. The sensor tip should not be touched with other objects or blocked, as this can interfere with gas detection.
The detector is designed to operate within specific environmental conditions: temperatures between -10°C and 40°C, and humidity levels up to 95% RH without condensation. For storage, the recommended conditions are temperatures between -20°C and 50°C, and humidity up to 90% RH, while avoiding caustic gases or substances. The device comes with a 1-year limited warranty and includes a calibration and QA certificate, ensuring its quality and reliability. It undergoes 100% product testing and verification in the USA, reinforcing its commitment to high standards.
General| Sensor Type | Electrochemical |
|---|---|
| Accuracy | ±5% |
| Operating Temperature | -20C - 50C |
| Operating Humidity | 15% - 90%RH |
| Battery Life | 2 years |
| Alarm | Audible, Visual |
| Dimensions | 30 mm |
| Weight | 120 g |
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