With the improved technology, most people are opting to use cameras to monitor or inspect their sewers. It is however not easy to locate sewer cameras but a little practice and the use of the right equipment can make it easier. Here is a 10 step guide on how to develop your sewer camera locating technique before you find a sewer camera for sale:
1. Turn on the transmitter
Most transmitters or sonde are located in the flexible spring found behind the camera. Depending on the system you have found for sale, the transmitter can be turned on when the system unit is powered up while in other systems you need to add a battery or turn the transmitter before you start locating. You should not forget to turn the transmitter on at all costs. You should therefore start by knowing the type of system you’ve.
2. Turn on the locator
You should also remember to turn the locator on before you start. Some digital locators have been built with an automatic shut off after every five minutes when not in use to help them save battery life. You should therefore remember to turn the locator on every time you get started or have not used the locator for more than 5 minutes. In addition, battery strength can determine the performance of the locator. Therefore, make sure that your batteries are strong and as an insurance policy, have an extra pair of batteries.
3. Select camera/sonde mode
You need to get select the camera mode to use when doing the inspection. The mode should help you see clearly what is inside the sewer before you dig. Improved locators can be used in various uses besides inspection e.g. tracing gas or utility lines or buried power lines because they’ve an external transmitter.
4. Select the total field antenna
When using Total Field Antenna, you will get icons on the screen e.g. arrows that direct you to the right target. However, not every locator has total field antenna feature. If your locator lacks this feature, Twin Peak Mode is an accurate alternative although it is harder to use when compared to Total Field Antenna. Make sure the camera you buy for sale has a total field antenna mode.
5. Select the right frequency setting
The frequency setting will determine what you can locate on your sewers. Most transmitters operate at 512Hz although advanced locators can locate other objects because they can be switched to multiple frequencies. For instance, power lines have a 60 Hz signal radiations. If you switch the locator to look for the frequency, you can easily know if there are any powerlines before you dig. On the other hand, buried gas, phone and cable TV lines have a frequency of 1 KHz, 8 KHz and 33 KHz or 65 KHz respectively. If you need to locate any of them, you just need to switch to the frequency. It is also possible to locate metal drain, cast iron, plastic or clay pipes using this system.
6. Push the camera into the sewer line 10-15 ft.
It is a common problem to most people locating the camera they bought for sale after they’ve identified the problem. Normally, when the camera is in a 20 ft. range, it is easier to locate it after the process. It is therefore highly recommended to pull the camera back to within 20 ft. of the drain opening to start the locating process.
7. Hold the locator at a 45⁰ angle while standing near the drain opening
You need to start off the locating process at that angle and then rotate in a circle while listening to the strength of the indicator tone. After noting the direction of the strongest signal, walk towards that direction and then hold the locator perpendicular to the ground. This will help you get the better view and results.
8. Press the DOWN arrow if the indicator reaches 100%
This will help you reduce the gain or sensitivity of the indicator. After pressing the DOWN arrow, wait until the indicator is about 50% before you proceed. You should repeat this process while still moving to your target.
Don’t forget to check out our article on finding a Sewer Camera For Sale.
9. Follow arrows on the locator display screen
If the locator you found for sale has arrows, use them because they point the exact location of the camera. If you have line direction arrows, they show you which way to rotate the camera to align with the pipe.
10. Know the depth
After finding the stoppage, you need to know how deep it is to know the equipment to use. Whether a shovel or a backhoe. Better locators shows the depth automatically while other digital locators need you to press a button to obtain the depth. If you are using an analogue locator, you will need to use triangulation to find the camera depth.
Modern technology has revolutionised locators to make camera and pipe locating process accurate, easier and quicker to use. However, you should take your time to practice first on different types of lines before you engage in sewer lines. This will expose you to more ideas and skills on how to use your locator in future. If you find a sewer camera for sale, make sure to check if it has all the features you need.