SMC’s ALTS flow switch represents the state-of-the-art in gas and liquid flow switching and liquid level control. This device continues the SMC tradition of providing the highest quality flow instrumentation. Flow & level detection is accomplished by using a high-resolution thermal differential technique. The sensor consists of a pair of matched Resistance Temperature Detectors (RTD’s). One RTD uses a self-heated constant DC current while the other RTD is unheated and provides an accurate process temperature reference. The temperature differential created between the reference and the heated RTD pair is a function of the density and/or velocity of the media in which the sensor is in contact. The sensor and wetted parts are comprised of durable 316L stainless steel, all welded construction with no moving parts. The switch is easy to install and adjust; providing reliable, low maintenance performance in the most demanding applications.
Features
| Process Connections: | ¾” MNPT standard. ½” to larger MPNT, Sanitary and flanges optional |
| Process temperature: | -100 – 390 °F (-70 – 200 ℃) standardMedium T: to 572 °F (300 ℃)Hight T: to 850 °F (485 ℃) |
| Operating pressure: | to 3000 psia (207 bar) |
| Velocity Range: | Dependant on fluid mediaLiquids: 0-5 fps (0-1.5 mps)(Adjustable flow rate)Gas: 0.2-500 fps(0.07-150 mps)(Adjustable rate) |
| Repeatability: | ± 1% of setpoint (Flow) or 32” (0.8mm) Level |
| Material : | 316 SS standard.Hastelloy, Monel, Inconel |
| Operating Temperature – Electronics: | -40 – 140 °F (-40 – 60 °C ) |
| Housing Protection: | Explosion Proof; NEMA 3,4X,7,9 |
| Insertion Length: | 2.0” standard. ½” or greater optional |
| Flow Switch: | over a range of ± 50 °F (10 °C) ; Temperature compensated over entire range |
| Stability: | <0.5% from calibrated setpoint |
| Ex-protection: | CSA, FM, UL, CENELEC and EECS approved |
| Power requirements : | 115 VAC, 50/60Hz or 230 VAC, 50/60Hz24VDC optional. 3.1 Watt maximum |
| Output: | 5A 250 VAC DPDT with fail safe capabilty |
Malaysia
