1. Introduction
The ROROLL HT61 Gas Leak Detector is a pen-type, mini portable PPM meter designed for detecting combustible and flammable gases in both natural and industrial environments. This device provides a quick and reliable method for identifying gas leaks, ensuring safety and preventing potential hazards. It features a high-precision semiconductor sensor capable of detecting various gases up to 1000ppm.
2. Safety Information
Please read and understand all safety warnings and operating instructions before using this product. Failure to do so may result in injury or damage to the device.
- Do not use the device in environments with extremely high concentrations of gas, as this may pose an explosion risk.
- Ensure proper ventilation when testing for gas leaks.
- The device is designed for detection, not for continuous monitoring or as a primary safety alarm system.
- Keep the device away from water and extreme temperatures.
- Do not attempt to disassemble or modify the device. Refer all servicing to qualified personnel.
- Always replace batteries with the correct type and polarity.
3. Product Features
- High Precision Semiconductor Sensor: The HT61 is equipped with a semiconductor sensor that has passed Metrology certification, offering accurate detection with a precision of ±10% F.S. Methane.
- Dual Alarm System: Features both an audible buzzer alarm and a visual red backlight display for clear indication of gas presence.
- Compact and Portable Design: Pen-type mini design makes it easy to carry and operate with one hand.
- Non-slip Handle: Ergonomically designed handle for a secure grip, reducing the chance of accidental drops.
- Quick Response Time: Detects gas leaks rapidly, with a response time of approximately 5 seconds for concentrations ≤500PPM and approximately 2 seconds for concentrations >500PPM.
- Fast Launch Prepare Time: Ready for use within 30 seconds of powering on.
- Adjustable Sensitivity: Features "Hi" and "Lo" sensitivity modes for different detection requirements.
- Low Power Indication: Alerts the user when battery power is low, ensuring continuous operation.
- Auto-Off Function: Automatically powers off after a period of inactivity to conserve battery life.
- Wide Range of Detectable Gases: Capable of measuring most combustible gases including acetone, acetylene, alcohol, ammonia, benzene, butane, ethanol, ethylene oxide, gasoline hexane, hydrogen, methane, naphtha, natural gas, paint thinner, propane, and solvent.
4. Package Contents
Upon opening the package, please verify that all items are present and in good condition:
- 1 x ROROLL HT61 Gas Leak Detector
- Note: AAA batteries (x2) are not included and must be purchased separately.
5. Setup and Installation
5.1 Battery Installation
The HT61 Gas Leak Detector requires two AAA batteries for operation. The battery compartment is located at the bottom of the device.
- Twist the red battery cover at the bottom of the device counter-clockwise to remove it.
- Insert two AAA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
- Replace the battery cover by twisting it clockwise until securely fastened.
Figure 5.1: Battery compartment and installation. The battery cover is easy to take off, and the device is powered by 2 AAA batteries (not included).
5.2 Initial Preparation
Before accurate measurement, the device requires a brief warm-up period.
- After powering on the device, allow approximately 30 seconds for the sensor to stabilize. This "Launch Prepare" time ensures optimal performance.
Figure 5.2: Device preparation and response times. The device requires a launch preparation time of less than 30 seconds and offers a quick response time of less than 5 seconds.
6. Operating Instructions
6.1 Power On/Off
- To power on, press and hold the power button (red button with power symbol) until the display illuminates.
- To power off, press and hold the power button again until the display turns off. The device also features an auto-off function to conserve battery.
6.2 Gas Detection
Once the device is powered on and has completed its warm-up phase (approximately 30 seconds), it is ready for detection.
- Hold the device by its non-slip handle.
- Point the sensor tip (at the top of the device) towards the area where a gas leak is suspected.
- Slowly move the sensor tip around the suspected leak source.
- Observe the device for alarm indications.
Figure 6.1: Using the HT61 for gas detection. The device is held by hand, and its sensor is positioned near a potential gas leak source.
6.3 Alarm Indications
When gas is detected, the HT61 will provide both audible and visual alarms:
- Audible Alarm: A buzzer will sound, indicating the presence of gas.
- Visual Alarm: The red backlight display will illuminate and flash, providing a clear visual alert. The bar graph on the display will also indicate the relative concentration of the detected gas.
Figure 6.2: Audio/Visible Double Alarm. The device provides both a buzzer alarm and a red backlight display when gas is detected.
6.4 Sensitivity Modes (Hi/Lo)
The device features two sensitivity modes to adapt to different detection scenarios:
- "Hi" (High Sensitivity): Use this mode for detecting very small leaks or low concentrations of gas. Press the green "Hi" button to activate.
- "Lo" (Low Sensitivity): Use this mode for detecting larger leaks or higher concentrations, or to pinpoint the source of a known leak. Press the green "Lo" button to activate.
7. Maintenance
7.1 Cleaning
To ensure the longevity and accuracy of your device:
- Wipe the exterior of the device with a soft, dry cloth.
- Do not use abrasive cleaners or solvents, as these may damage the casing or sensor.
- Keep the sensor tip clean and free from dust or debris.
7.2 Battery Replacement
When the low power indicator appears on the display, it is time to replace the batteries. Refer to Section 5.1 for detailed battery installation instructions.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Batteries are dead or incorrectly installed. | Replace batteries with new AAA batteries, ensuring correct polarity. |
| No alarm when gas is suspected. |
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| False alarms or erratic readings. |
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9. Specifications
| Parameter | Detail |
|---|---|
| Product Type | Gas Leak Detector (Pen Type) |
| Model Number | HT61 (465656) |
| Brand | ROROLL |
| Detection Principle | High Precision Semiconductor Sensor |
| Precision | ±10% F.S. Methane |
| Detectable Gases | Acetone, Acetylene, Alcohol, Ammonia, Benzene, Butane, Ethanol, Ethylene Oxide, Gasoline Hexane, Hydrogen, Methane, Naphtha, Natural Gas, Paint Thinner, Propane, Solvent, etc. |
| Response Time | ≤500PPM: Approx. 5 seconds; >500PPM: Approx. 2 seconds |
| Prepare Time (Warm-up) | Approx. 30 seconds |
| Alarm Method | Light and Sound Alarm (Buzzer & Red Backlight Display) |
| Sensitivity Modes | High (Hi) / Low (Lo) |
| Auto-Off | Yes |
| Low Power Indication | Yes |
| Power Supply | 2 x AAA Batteries (not included) |
| Item Weight | 3.31 pounds (approx. 1500 grams) |
| Package Dimensions | 1.18 x 0.79 x 0.39 inches |
| Material | Metal |
Figure 9.1: Key specifications and measurable gases. This table summarizes the device's capabilities and performance metrics.
Figure 9.2: High Precision Semiconductor Sensor. The HT61 features a certified sensor for accurate gas detection.
10. Warranty and Support
Specific warranty information for the ROROLL HT61 Gas Leak Detector is not provided in this manual. For warranty details, technical support, or service inquiries, please contact the manufacturer or your point of purchase. Keep your purchase receipt as proof of purchase.
