SI-300T Integrated Temperature and Flow Sensor provides highly reliable and stable repeatable switch settings for a variety of industrial applications. Temperature up to 100°C; Pressure up to 100 bar. Flow and temperature can be measured on-site. Suitable for small range detection. Customizable threaded and flange connections and probe extensions.
Featured Applications
SI-300T Integrated Temperature and Flow Sensor is suitable for any liquid, gas and slurry. The integrated operating principle ensures reliable and repeatable operation even for very viscous liquids. The electronic switch is very reliable for single and double switch points. The device easily detects flow and temperature.
Common applications:
- Flow rate indication monitoring;
- Control of liquid in agitated tanks;
- HVAC flow sensor;
- Safety diaphragm/safety valve flow control;
- Tanker unloading;
Pump applications:
- Low flow control of pumps;
- Cavitation alarm;
- Seal leak detection;
- Chemical feed pump sensor;
- Monitoring bearing lubricating oil;
SI-300T Integrated Temperature and Flow Sensor Technical Parameters
| Setting range: | (Water) 1…150cm/s, (Oil) 3…300cm/s, (Air) 20…2000cm/s |
| Signal output: | PNP, NPN, Relay, Analog (4…20mA), PT100 (0-100℃ optional), Normally open + normally closed (SPDT) |
| Power supply: | 24V±20%DC or 230V±15%AC |
| On-current: | Maximum 400mA (PNP or NPN type), maximum 4A (relay type) |
| No-load current: | Maximum 80mA |
| Flow indication: | LED row (6) |
| Setting method: | Potentiometer setting |
| Pressure range: | 100bar |
| Temperature alarm: | PT100 (0–100°C optional) |
| Response time: | 1…13s, typical value 2s |
| Initialization time: | About 8s |
| Electrical protection: | Reverse phase, short circuit, overload protection |
| Protection level: | IP67 |
| Medium temperature: | -20…80°C |
| Ambient temperature: | -20…80°C |
| Storage temperature: | -20…100°C |
| Wiring method: | M12 connector/directly attached 2m cable optional 2) |
| Material: | Probe–stainless steel, Casing–PBT |
| Weight: | 0.4kg |
SI-300T Integrated Temperature and Flow Sensor Wiring Diagram
What is a flow switch in HVAC?
In HVAC (heating, ventilation and air conditioning) systems, flow switches are widely used to control the flow of water, refrigerant and air.
For example, in air conditioning systems, flow switches can detect the flow of cooling water. When the flow is lower than a certain value, the switch will send a signal to remind the operator to clean the filter or replace damaged parts in time. This not only ensures the normal operation of the system, but also reduces energy consumption and extends the service life of the equipment.
The SI-300T Integrated Temperature and Flow Sensor uses dual temperature sensors. One temperature sensor is connected to the heat source. The other temperature sensor is isolated from the heat source. This provides temperature compensation for the process.
Temperature changes when flow changes. The device can be used as a flow sensor within the flow switch range or as a flow switch. Ultra-low flow rates can also be detected with an adjustable range of up to 300:1.
If you need to purchase an integrated temperature and flow sensor, please feel free to contact our sales engineers!