Reed-11/Reed-21S Remote Transmitter
Reed-11 converts liquid level status to a 4～20mA signal and transmits it to remote console or control center to monitor and control the liquid level in real-time.
Reed-11/Reed-21S Remote Transmitter is designed to be assembled with Flap-11 Magnetic Level Indicator series for remote control. It converts liquid level status to a 4～20mA signal and transmits it to remote console or control center to monitor and control the liquid level in real-time.
The magnetic float in the chamber rises or drops with the fluid level in the vessel. As the float moves, the reed switches in the chamber proximal to the magnetic float are magnetized and close to the blades, and all other reeds that are not magnetized by the float are in open state. The position of the float is as the sliding point in a potentiometer. The magnetic float moving with the liquid level up or down will lead to resistance change in the circuit and the voltage will change accordingly. Then it is converted into a 4-20mA current signal through a current-voltage convertor. Jiwei offers two types of reed transmitter with accuracy of ± 5mm or ± 10mm respectively. The higher the accuracy, more reed switches will be needed.
- With imported high quality microprocessor. 304 stainless-steel external tube improves the corrosion resistance and reliability.
- Imported TI CLT chips for 4～20mA output.
- High-performance CPU and imported chips to achieve 4-20mA+Hart output.
- Qualified with SIL2 / SIL3 Functional Safety Assessment, as well as certified for both Intrinsic Safety (Ex ia IIC T6 Ga) and Flameproof Enclosure (Ex d IIC T6 Gb) explosion protection.
- Ingress Protection rating reaches to IP66/67.
- Chamber is made of 304stainless steel with strong corrosion resistance.
| Resolution | ±5mm/±10mm |
| Power supply | 10～36V DC |
| Process temperature | -50～150℃ |
| Ambient temperature | -20～50℃ |
| SIL Qualification (Reed-21S) | SIL2(HFT≥0)/SIL3(HFT≥1) |
| Explosion-Proof | Flameproof Enclosure: Ex d IIC T6 Gb |
| Intrinsic Safety: Ex ia IIC T6 Ga | |
| Ingress Protection | IP66/IP67 |
| Cable entry | 1/2″NPT or M20×1.5 |
