| Series | Description | Applications | Functions | Features | Materials | Pressure Limits | Temperature Limits | Pipe Sizes |
| 3100 | Flow Indicator | Transparent Liquids | Vane moves w/ flow (not calibrated) Observe fluid condition | Write-on scale No power required | Aluminum, brass or 316 sst | 200 psig | 400ºF 400ºF rating requires epm or viton o-ring | 1/2"- 12" |
| 3200 | Flow rate meter | Transparent liquids or gases | Direct reading flow rate Observe fluid condition | Lowest cost meter No power required | Aluminum, brass or 316 sst | 200 psig | 400ºF 400ºF rating requires epm or viton o-ring | 1/2"- 12" |
See-Flo® indicators show you at a glance, the color, clarity and flow of liquids in process lines. An alloy vane indicator is flexed in proportion to flow through the variable area indicator housing. The large tempered glass window permits easy observation of fluid conditions and vane indicator position for a wide range of liquids in vertical or horizontal piping runs.
The wedge shape of the indicator housing makes the See-Flo® practically self-cleaning. Where periodic maintenance might be necessary, the window is easily removed and replaced. As it is intended to be used as a flow indicator, the scale is not calibrated in this model.
A special write-on surface is provided along the sweep of the indicator on which system reference points may be marked. This can help you establish normal operating limits, rate efficiency or balance a process system.