Rummel FlowHot: circuit monitoring at the upper limit of hot water
FlowHot is the highest temperature class for hot water in the Rummel electronic multi-circuit distribution family: in molds controlled with hot water up to 180 °C, it measures, displays and records the flow and temperature of every circuit. It is designed for temperature control applications that work in the uppermost range water can reach before switching to oil. The operating pressure limit is 15 bar.
Measuring principle: mechatronic
The key point that separates FlowHot from FlowBasic and FlowBasicHot is the measuring principle. In this model the flow is detected by a mechatronic measuring system. The measuring range is 0.3–25 L/min per circuit; going below the 1.0 L/min lower limit of the vortex sensor models makes it possible to monitor even very low flows in small core and slide circuits. Raising the upper limit to 25 L/min makes it easier to keep large mold plate circuits on the same distributor.
The measured values are flow and temperature. The circuits are set with manual shut-off ball valves; the system raises an alarm when out of limits.
Software and visualization
The visualization terminal has a touchscreen and presents the data graphically. Process documentation, alarms when limit values are reached, storage of mold parameters, collection and evaluation of process data, parameterization and status monitoring are available to the user.
Why separate circuits at 180 °C?
At these temperatures the mold is usually running materials with high thermal resistance, and a local temperature difference comes back on the part as internal stress, warpage and surface differences. In circuits connected in series, the water reaching the last circuit is both reduced and cooled. FlowHot's parallel distribution gives water directly from the manifold to each circuit; with no hose bridges, pressure loss falls and the flow rises. Because the circuits are separate, a single zone of the mold can be adjusted and a fouled circuit is located exactly.
Being able to install the distributor close to the mold shortens the hoses carrying 180 °C water; this lowers both the heat loss and the risk of contact with hot hoses.
Technical data
| Feature | Value |
|---|
| Circuit control | Manual shut-off ball valves |
| Measuring principle | Mechatronic |
| Measuring range | 0.3–25 L/min |
| Main distribution connection | 1" female thread |
| Mold circuit connection | 1/2" female thread |
| Material | Parts in contact with the medium in brass and stainless steel |
| Seal | FKM (Viton) |
| Medium | Hot water |
| Max. temperature | 180 °C |
| Max. operating pressure | 15 bar |
| Modular design | Manifold with 2, 3, 4, 5, 6, 8, 10 and 12 stations; up to 100 circuits by cascade connection |
The general section of the brochure describes the body as stainless steel, while the technical table gives the parts in contact with the medium as brass and stainless steel; we clarify the material configuration at the ordering stage.
Water or oil?
If you need to go above 180 °C or your temperature control unit runs on heat transfer oil, the FlowOil with the same mechatronic measurement goes up to 200 °C. For applications up to 160 °C, the FlowBasicHot with a vortex sensor is also an option.
