How far can my pH electrode be from my meter? What if it is too far?
200 feet (61 meters) is the maximum distance an electrode can be from a pH meter. If the distance is greater, you will need a transmitter. Use either a 4 to 20 mA transmitter ( make sure your pH meter accepts 4 to 20 mA signal) or purchase an industrial electrode with a built-in-transmitter. A transmitter will allow you to use your electrode up to 1000 feet (305 meters) from your meter provided you are not in a noisy environment.