4220 Flow Meter
Section 3 Installation
3.1 Introduction
This section of the manual contains detailed information on the installation of the 4220 Flow Meter. Included are sections on the power sources, mounting methods, interconnection wiring, installation of the submerged probe and setup procedure for the unit.
3.1.1Preparation for Use The flow meter is shipped with a roll of paper installed and a standard program in the system memory, also called the default program. This program exists to test the flow meter at the factory, and also because the computer must always have some- thing programmed into it. You will generally program the flow meter differently for your installation.
You should familiarize yourself with the programming procedure and practice working through the program on the flow meter to become comfortable with programming. You can program the unit in the shop rather than at the job site, with the exception of the level adjustment, if you want. This will minimize the possi- bility of dirt and moisture getting inside the flow meter at the installation.
3.1.2 Installing the | If the unit is new, at this time you can install the desiccant can- |
Desiccant Canister | ister. It is provided in the accessory package and looks like a |
| small, flat can with little holes in it. Open the flow meter case lid. |
| Note the small clamp that resembles a bottle cap opener located |
| near the bottom |
| iccant canister by pressing it under this bracket, with its viewing |
| window lined up with the circular hole in the bracket. |
| Make sure the clamp is fully engaged over the canister. The par- |
| ticles inside the desiccant window should be blue. If the particles |
| are pink, the desiccant is saturated and you will need to regen- |
| erate the canister before using it. If the unit has been in use and |
| has been returned for reprogramming, you should clean it and |
| inspect it as outlined in Section 6 of this manual. You can also |
| install the external desiccant cartridge, which provides pressure |
| equalization for the submerged probe pressure transducer. |
3.1.3Installing the External Snap the external desiccant cartridge into the clamps mounted
Desiccant Cartridge on the top of the cabinet. Then attach the silicone tubing between
the top of the desiccant cartridge and the black plastic elbow fitting mounted on the side of the case near the top.
This desiccator keeps moisture out of the submerged probe's ref- erence port. This port connects to a tiny tube that goes through the case and the submerged probe cable all the way to the trans- ducer. Like the case desiccant canister, the external desiccant
