Sierra - High Temperature Flow Switch up to 850F

• Mass flow Switch for the detection of the mass flow rate of liquids and gases
• Range of 0.01 to 5 fps in liquids and 0.1 to 500 fps gases
• Fast response time of 0.5 to 10 seconds (media dependent)
• Wide operating temperature range of Medium T to 300C (572F) optional Hi T to 485C (850F)
• Electronics: -40C to 60C (-40F to 140F). Optional remote electronics for use in medium and Hi T environments
• Operating Pressure: to 3000 psia (207 bar)
• CE, CENELEC and CSA approval
• Repeatability: +/- 1% of set point (Flow) or 1/32" (0.8mm) Level
• Stability:  Drift
• Temperature compensated through entire range
• Enclosure: Explosion Proof; NEMA 3, 4X, 7, 9. CSA, FM, UL, CENELEC and EECS approved
• Process Connection: 0.75" MNPT standard. 0.5" and larger MNPT and various other process connections such as sanitary and flanges optional
• Insertion Length: 2.0" standard. 0.5" or greater optional
• Input Power: 115 VAC, 50/60Hz standard. 230 VAC, 50/60Hz optional, 24VDC optional. 3.1 Watt maximum
• Output: 5A. 250 VAC. DPDT with fail safe capability

Sierra Instruments’ Innova-Switch represents the State-of-the-art in gaseous and liquid flow switching or liquid level control and continues the Sierra tradition of providing the highest quality mass flow meters and controllers in the industry.

Flow and 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 is self-heated using a constant DC current. The other RTD is unheated and provides an accurate process temperature reference. The thermal differential created between the reference and the heated RTD pair is a function of the density and/or velocity of the media with which the sensor is in contact.

The sensor and wetted parts are of durable 316L stainless steel, all welded construction with no moving parts. The switch is easy to install and adjust, giving reliable, low maintenance performance in the most demanding applications.

• Operating Range:
• Flow Switch: Adjustable flow rate (feet per second-fps), typical:0.01 to 5.0 fps liquids and 0.1 to 500 fps gases
• Level Switch: Switch on level change of 0.03 inch
• Response Time:
• Flow Switch: 0.5 to 10 seconds (media dependent)
• Level Switch: 0.1 to 1 second (media dependent)
• Repeatability: +/- 1% of setpoint (Flow) or 1/32” (0.8mm) Level
• Stability: Drift less than 0.5% from calibrated setpoint over a range of +/-50F. Temperature compensated through entire range.

• Operating Temperature:
• Process: -70o to 200oC (-100oF to 390oF) standard. Medium T to 300oC (572oF) optional
• Hi T to 485oC (850oF)
• Electronics: -40oC to 60oC (-40oF to 140oF). Optional remote electronics for use in medium and Hi T environments
• Operating Pressure: to 3000 psia (207 bar)
• Input Power: 115 VAC, 50/60Hz standard. 230 VAC, 50/60Hz optional, 24VDC optional. 3.1 Watt maximum
• Output: 5A. 250 VAC. DPDT with fail safe capability

• Wetted Materials: 316 SS standard. Hastelloy, Monel, Inconel or other materials optional
• Enclosure: Explosion Proof; NEMA 3,4X,7,9. CSA, FM, UL, CENELEC and EECS approved Process Connection: 0.75” MNPT standard. 0.5” and larger MNPT and various other process connections such as sanitary and flanges optional
• Insertion Length: 2.0” standard. 0.5” or greater optional
• Approvals: CE, CSA, CENELEC Class 1 Div 1 Groups B,C,D