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QX Flow Switch
Brand: Ameritrol, IncThe QX series flow switch offers the same reliability as our FX Series and also offers a faster response time.
These fast response flow switches are used when the response time in detecting the increase or decrease of flow is critical. With no moving parts exposed to the process they will provide extremely reliable and repeatable operation in virtually all liquids, gases, and slurries.
The sensor head employs two temperature sensors with a constant very low power heating source physically attached to one of the temperature sensors. The second temperature sensor is isolated from the heating source and provides compensation for changing process temperatures. As the rate of flow changes so does the temperature differential. This allows the device to be used as a flow/no flow sensor, or to switch at any velocity shown in the flow switch range chart.
The dual set point option provides two separately adjustable switch points. Extremely low flow rates can be detected with rangeability up to 300:1.
This instrument is ideal for use in virtually all liquids, gases, and slurries.
No moving parts exposed to the process provide end users with an extremely reliable and repeatable flow switch even in viscous or corrosive applications.
The electronics are available with single or dual switch points. A SPDT 3 amp Relay Output is standard and are offered with several different configurations and contact ratings.
Temperature monitoring is also available with either a switch output or a linear 4-20 mA output. Remote mounting of the electronics is also available for hard to reach or high temperature applications.
Features- Fast Response for Time Critical Applications
- No Moving Parts
- NEMA 4X Explosion Proof Enclosures
- Threaded, Flanged, or Retractable Probes
- Low Flow Rate Detection
- 316L Stainless Steel Sensor/Nickel Braze
- Temperatures to +350° F
- Field Calibration is Simple and Easy
- Pressures to 2000 psiG
Specifications
Brand
Accuracy
- ± 0.5 % of Range at Constant Conditions
Approvals & Certifications
- ATEX
- CSA
- FM
- UL
Communication
- Model MC-5 Calibrator
Conduit Connection
- 1” NPT Female
Cover - for Local Enclosure
- Blind Cover
Electronics - Standard Features
- Detects Min. Flow or Presence / Absence of Flow
- Easy / Fast Calibration
- Excellent Low Flow Sensitivity
Enclosure, Body Material
- 316L Stainless Steel
Environmental Protection
- IP66
- NEMA 4X / IP66
Flange Material
- 316L Stainless Steel
- AMS 4777 Nickel Braze Alloy
Flange Size - 1-1/2” (DN 40)
- 1-1/2” (DN 40) - 150#
- 1-1/2” (DN 40) - 1500#
- 1-1/2” (DN 40) - 2500#
- 1-1/2” (DN 40) - 300#
- 1-1/2” (DN 40) - 600#
- 1-1/2” (DN 40) - 900#
Flange Size - 1-1/4” (DN 32)
- 1-1/4” (DN 32) - 150#
- 1-1/4” (DN 32) - 1500#
- 1-1/4” (DN 32) - 2500#
- 1-1/4” (DN 32) - 300#
- 1-1/4” (DN 32) - 600#
- 1-1/4” (DN 32) - 900#
Flange Size - 1” (DN 25)
- 1” (DN 25) - 150#
- 1” (DN 25) - 1500#
- 1” (DN 25) - 2500#
- 1” (DN 25) - 300#
- 1” (DN 25) - 600#
- 1” (DN 25) - 900#
Flange Size - 2” (DN 50)
- 2” (DN 50) - 150#
- 2” (DN 50) - 1500#
- 2” (DN 50) - 2500#
- 2” (DN 50) - 300#
- 2” (DN 50) - 600#
- 2” (DN 50) - 900#
Flange Size - 3” (DN 80)
- 3” (DN 80) - 150#
- 3” (DN 80) - 1500#
- 3” (DN 80) - 2500#
- 3” (DN 80) - 300#
- 3” (DN 80) - 600#
- 3” (DN 80) - 900#
Flange Size - 4” (DN 100)
- 4” (DN 100) - 150#
- 4” (DN 100) - 1500#
- 4” (DN 100) - 2500#
- 4” (DN 100) - 300#
- 4” (DN 100) - 600#
- 4” (DN 100) - 900#
Flange Size - 6” (DN 150)
- 6” (DN 150) - 150#
- 6” (DN 150) - 1500#
- 6” (DN 150) - 2500#
- 6” (DN 150) - 300#
- 6” (DN 150) - 600#
- 6” (DN 150) - 900#
Flange Type
- Flat Face (FF)
- Raised Face (RF)
Input Power
- 117 Vac (90-135 Vac)
- 12 Vdc (+30 %, -10 %)
- 200-240 Vac
- 24 Vdc or Vac (± 10 %)
Insertion 'U' Length
- 1.5” (3.8 cm)
- 2” (5 cm)
- 4” (10.1 cm)
- Custom Lengths in inches
Operating Pressure - Sensor
- Vacuum to psig: 2,000 (bar: 138, MPa: 13.8)
Operating Temperature - Electronics
- -46° to 65° C (-50° to 150° F)
Operating Temperature - Sensor
- -46° to 177° C (-50° to 350° F)
Principle of Operation
- Thermal, Calorimetric
Remote Electronics Enclosure & Cover
- Blind Cover
Response Time
- From 1 second
Sensor, Probe Style
- Insertion
Switch Point Range
- Gases: 0.5 to 150 FPS, 0.15 to 45.72 MPS
- Hydrocarbon-based Liquids: 0.02 to 3.0 FPS, 0.006 to 0.91 MPS
- Water-based Liquids: 0.02 to 0.7 FPS, 0.006 to 0.21 MPS
Switch Type
- DPDT 3 A or 10 A Resistive
- SPDT 3 A or 10 A Resistive
Wetted Materials
- 316 Stainless Steel c/w Nickel-Braze
- Pump Protection: Automatic shut down on low or no flow
- Bearing Lubrication: Can quickly and reliably detect loss of flow even with very low flow rates
- Seal Leakage: Verifies positive seal flow or detects excessive leakage indicating maintenance requirement
- Chemical Feed and Metering Pumps: Indicates low or no flow of chemical additives to process
- Safety Shower/Eye Wash Station: Automatic annunciation of potential danger to plant personnel
- Analyzer/ Gas Chromatographs: Confirms continuous sample flow to instruments
- Control Rooms: Automates verification of flow when fans, pumps or valves are energized
- Purge Air: Fast response on loss of flow for process or plant safety
- Spray Nozzles: Detects nozzle blockage in coating applications
- Relief Valve/Rupture Disks: Quickly alarms on flow or leakage of safety relief valves or rupture disks
- Chiller Lines: Automatic shut down of chillers on low or no flow
- Heater Burnout Prevention: Heater shutdown on loss of flow to prevent overheating of elements
- Tank Car Loading: Quickly senses dry line or phase change from liquid to nitrogen gas flow
- Drain Line Sensor: Capable of detecting flow in partially filled lines
- Agitation Monitor: Positive indication of agitation in tanks