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iSOLV Thermal Mass Flowmeter

iSOLV Thermal Mass Flow Meters have two sensors constructed of reference grade platinum windings (RTDs). The two RTDs are clad in a protective 316SS sheath and are driven by a proprietary sensor drive circuit. One sensor is self-heated and the other sensor measures gas tempera- ture. The pair is referred to as the sensing element, and is either installed in a probe as an Insertion style, or inserted into a pipe section as an In-Line style flow meter.

As gas flows by the flow sensor, the gas molecules carry heat away from the surface, and the sensor cools down as it loses energy. The sensor drive circuit replenishes the lost energy by heating the flow sensor until it reaches the desired temperature difference above the reference sensor.
The electrical power required to maintain a constant temperature differential is proportional to the gas mass flow rate and is linearized to be the output signal of the meter.

iSOLV’s proprietary sensor drive circuit maintains the constant temperature difference over the entire operating temperature range of the instrument. The circuit responds quickly to changes in process flow rate or gas temperature.
iSOLV Thermal Mass Flow Meters provide an extremely repeatable (0.2% of Full Scale) and accurate output directly proportional to the mass flow rate of the gas being measured.

Application reference:


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Features

• Dirt Insensitive
• No Moving Parts
• Ease of Installation
• Negligible pressure drop
• Wide turndown capability of 100 to 1
• Economical solution for large diameters
• Output both flow rate and temperature simultaneously
• Accurate measurement and operation at very low gas pressures and flow rates
• Measures mass flow directly - without additional pressure and temperature inputs

Application

iSOLV unique thermal mass flowmeter provides exceptionally accurate, highly reliable and repeatable indications of flow rate and operating temperature for air and gas – argon, biogas, methane, chlorine, carbon monoxide, carbon dioxide, digester gas, flare gas, flue gas, hydrogen, helium, landfill gas, nitrogen, natural gas, ammonia gas, oxygen, ozone, propane, mixture gas and many other gases.

iSOLV thermal mass flowmeter has many applications across many industries:
• Water and Waste Water
• Compressed Air
• Natural Gas (Fuel Gases)
• Metals/ Furnaces/ Smelters
• Building Automation
• Landfill
• Glass and Fiberglass
• Food and Beverage
• Pulp and Paper
• Pharmaceutical and Biotech
• Oil & Gas
• Power
• Others

Specifications


iSOLV THERMALL MASS FLOWMETER 90 SERIES (ATEX Approval)

FGL90 (In-line Integral)

• Sensor
 Two reference grade platinum RTD clad in 316SS sheath
• Wetted Part
 SS316
• Power
 24VDC (115 / 230VAC optional)
• Power Dissipation
 <2.5 W (for 24 VDC models)
• Electronics
 Microprocessor based
• Electronics Enclosure
 Integral mount, Explosion Proof, Class I, Groups B, C, D, Class II, Groups E,F,G, Class III, Type 4X - Class 1, Zone 1, Groups IIB+H2, IP66
• Flow Body / Probe Enclosure
 N/A
• Transmitter Enclosure
 N/A
• Display
 Two line, backlit display with keypad (Flow Rate, Totalized Flow, Temperature displayed)
• Turn Down
 100 to 1
• Resolution
 1000 to 1
• Low End Sensitivity
 5 SFPM
• Field Calibration Check
 Yes - Digital system allows raw signal validation (milli-watts)
• Communications
 Modbus® compliant RS485 RTU communications (Optional HART™ communication)
• Approvals
 ATEX Zone I, Ex II 2 G Ex d IIB+H2 T6 Gb
• Field Configurable
 Please contact Flotech
• Flow Accuracy
 +/- 0.5% of Full Scale +/- 1% of reading
• Flow Repeatability
 0.20%
• Respond Time
 1 second
• Gas Temperature Range
 -40°C to 90°C Standard (for higher temperature options, contact Flotech)
• Gas Pressure
 500 PSIG (if higher pressure needed, contact Flotech)
• Flow Output
 4 to 20 mA for Rate; 24VDC pulse for Totalized value
• Temperature Output
 Through Modbus® only
• Ambient Temperature
 -20°C to 65°C
• Flow Body
 SS316 Schedule 40 Flow Bodies sized from 1/4" x 6" long to 4" x 12" long. Male NPT ends standard (Flanges and other options available)
• Probe Style / Length
 N/A
• Relays
 Not Available
• Cable Length
 Not Applicable
• Flow Conditioning
 Flow Conditioners are built in to In-Line Style Flow Bodies from 1/2" to 4"

FGI90 (Insertion Integral)
• Sensor
 Two reference grade platinum RTD clad in 316SS sheath
• Wetted Part
 SS316
• Power
 24VDC (115 / 230VAC optional)
• Power Dissipation
 <2.5 W (for 24 VDC models)
• Electronics
 Microprocessor based
• Electronics Enclosure
 Integral mount, Explosion Proof, Class I, Groups B, C, D, Class II, Groups E,F,G, Class III, Type 4X - Class 1, Zone 1, Groups IIB+H2, IP66
• Flow Body / Probe Enclosure
 N/A
• Transmitter Enclosure
 N/A
• Display
 Two line, backlit display with keypad (Flow Rate, Totalized Flow, Temperature displayed)
• Turn Down
 100 to 1
• Resolution
 1000 to 1
• Low End Sensitivity
 5 SFPM
• Field Calibration Check
 Yes - Digital system allows raw signal validation (milli-watts)
• Communications
 Modbus® compliant RS485 RTU communications (Optional HART™ communication)
• Approvals
 ATEX Zone I, Ex II 2 G Ex d IIB+H2 T6 Gb
• Field Configurable
 Please contact Flotech
• Flow Accuracy
 +/- 0.5% of Full Scale +/- 1% of reading
• Flow Repeatability
 0.20%
• Respond Time
 1 second
• Gas Temperature Range
 -40°C to 90°C Standard (for higher temperature options, contact Flotech)
• Gas Pressure
 500 PSIG (if higher pressure needed, contact Flotech)
• Flow Output
 4 to 20 mA for Rate; 24VDC pulse for Totalized value
• Temperature Output
 Through Modbus® only
• Ambient Temperature
 -20°C to 65°C
• Flow Body
 N/A
• Probe Style / Length
 1/2" OD Probe Lengths 6" to 36"
• Relays
 Not Available
• Cable Length
 Not Applicable
• Flow Conditioning
 Captive Flow Conditioners available upon request with meter purchase

FRL90 (In-line Remote)
• Sensor
 Two reference grade platinum RTD clad in 316SS sheath
• Wetted Part
 SS316
• Power
 24VDC (115 / 230VAC optional)
• Power Dissipation
 <2.5 W (for 24 VDC models)
• Electronics
 Remote-style Microprocessor based
• Electronics Enclosure
 N/A
• Flow Body / Probe Enclosure
  Junction Box is Explosion Proof, Class 1, Group B, C, D; Class II Groups E, F, G; Class III, Type 4; Class I, Zone 1, AEX, d IIC, Ex d, IIC, IEC, 60526, IP66
• Transmitter Enclosure
 Remote mount, Explosion Proof, Class I, Groups B, C, D, Class II, Groups E, F, G, Class III, Type 4X - Class 1, Zone 1, Group IIB+H2, IP66
• Display
 Two line, backlit display with keypad (Flow Rate, Totalized Flow, Temperature displayed)
• Turn Down
 100 to 1
• Resolution
 1000 to 1
• Low End Sensitivity
 5 SFPM
• Field Calibration Check
 Yes - Digital system allows raw signal validation (milli-watts)
• Communications
 Modbus® compliant RS485 RTU communications (Optional HART™ communication)
• Approvals
 ATEX Zone I, Ex II 2 G Ex d IIB+H2 T6 Gb
• Field Configurable
 Please contact Flotech
• Flow Accuracy
 +/- 0.5% of Full Scale +/- 1% of reading
• Flow Repeatability
 0.20%
• Respond Time
 1 second
• Gas Temperature Range
 -40°C to 90°C Standard (for higher temperature options, contact Flotech)
• Gas Pressure
 500 PSIG (if higher pressure needed, contact Flotech)
• Flow Output
 4 to 20 mA for Rate; 24VDC pulse for Totalized value
• Temperature Output
 Through Modbus® only
• Ambient Temperature
 -20°C to 65°C
• Flow Body
 SS316 Schedule 40 Flow Bodies sized from 1/4" x 6" long to 4" x 12" long. Male NPT ends standard (Flanges and other options available)
• Probe Style / Length
 N/A
• Relays
 Not Available
• Cable Length
 7.5 m Standard (max. length 300 m)
• Flow Conditioning
 Flow Conditioners are built in to In-Line Style Flow Bodies from 1/2" to 4"

FRI90 (Insertion Remote)
• Sensor
 Two reference grade platinum RTD clad in 316SS sheath
• Wetted Part
 SS316
• Power
 24VDC (115 / 230VAC optional)
• Power Dissipation
 <2.5 W (for 24 VDC models)
• Electronics
 Remote-style Microprocessor based
• Electronics Enclosure
 N/A
• Flow Body / Probe Enclosure
  Junction Box is Explosion Proof, Class 1, Group B, C, D; Class II Groups E, F, G; Class III, Type 4; Class I, Zone 1, AEX, d IIC, Ex d, IIC, IEC, 60526, IP66
• Transmitter Enclosure
 Remote mount, Explosion Proof, Class I, Groups B, C, D, Class II, Groups E, F, G, Class III, Type 4X - Class 1, Zone 1, Group IIB+H2, IP66
• Display
 Two line, backlit display with keypad (Flow Rate, Totalized Flow, Temperature displayed)
• Turn Down
 100 to 1
• Resolution
 1000 to 1
• Low End Sensitivity
 5 SFPM
• Field Calibration Check
 Yes - Digital system allows raw signal validation (milli-watts)
• Communications
 Modbus® compliant RS485 RTU communications (Optional HART™ communication)
• Approvals
 ATEX Zone I, Ex II 2 G Ex d IIB+H2 T6 Gb
• Field Configurable
 Please contact Flotech
• Flow Accuracy
 +/- 0.5% of Full Scale +/- 1% of reading
• Flow Repeatability
 0.20%
• Respond Time
 1 second
• Gas Temperature Range
 -40°C to 90°C Standard (for higher temperature options, contact Flotech)
• Gas Pressure
 500 PSIG (if higher pressure needed, contact Flotech)
• Flow Output
 4 to 20 mA for Rate; 24VDC pulse for Totalized value
• Temperature Output
 Through Modbus® only
• Ambient Temperature
 -20°C to 65°C
• Flow Body
 N/A
• Probe Style / Length
 1/2" OD Probe Lengths 6" to 36"
• Relays
 Not Available
• Cable Length
 7.5 m Standard (max. length 300 m)
• Flow Conditioning
 Captive Flow Conditioners available upon request with meter purchase

iSOLV THERMALL MASS FLOWMETER 30 SERIES

FGL30 (Type In-line Integral)

• Sensor
 Two reference grade platinum RTD clad in 316SS sheath
• Wetted Part
 SS316
• Power
 24VDC / 115VAC / 230VAC changeable
• Power Dissipation
 <2.5 W
• Electronics
 Microprocessor based
• Electronics Enclosure
 Integral mount, NEMA 4 enclosure
• Flow Body / Probe Enclosure
 N/A
• Transmitter Enclosure
 N/A
• Display
 High contrast photo-emissive OLED graphical display (Flow rate, Totalizer, Temperature)
• Turn Down
 100 to 1
• Resolution
 1000 to 1
• Low End Sensitivity
 5 SFPM
• Field Calibration Check
 Yes - Digital system allows raw signal validation (milli-watts)
• Communications
 Optional Modbus®
• Approvals
 Not Available
• Field Configurable
 Please contact Flotech
• Flow Accuracy
 +/- 0.5% of Full Scale +/- 1% of reading
• Flow Repeatability
 0.20%
• Respond Time
 1 second
• Gas Temperature Range
 -40°C to 90°C Standard (for higher temperature options, contact Flotech)
• Gas Pressure
 500 PSIG (if higher pressure needed, contact Flotech)
• Flow Output
 4 to 20 mA for Rate; 24VDC pulse for Totalized value
• Temperature Output
 N/A
• Ambient Temperature
 -20°C to 65°C
• Flow Body
 SS316 Schedule 40 Flow Bodies sized from 1/4" x 6" long to 4" x 12" long. Male NPT ends standard (Flanges and other options available)
• Probe Style / Length
 N/A
• Relays
 Not Available
• Cable Length
 Not Applicable
• Flow Conditioning
 Flow Conditioners are built in to In-Line Style Flow Bodies from 1/2" to 4"

FGI30 (Insertion Integral)
• Sensor
 Two reference grade platinum RTD clad in 316SS sheath
• Wetted Part
 SS316
• Power
 24VDC / 115VAC / 230VAC changeable
• Power Dissipation
 <2.5 W
• Electronics
 Microprocessor based
• Electronics Enclosure
 Integral mount, NEMA 4 enclosure
• Flow Body / Probe Enclosure
 N/A
• Transmitter Enclosure
 N/A
• Display
 High contrast photo-emissive OLED graphical display (Flow rate, Totalizer, Temperature)
• Turn Down
 100 to 1
• Resolution
 1000 to 1
• Low End Sensitivity
 5 SFPM
• Field Calibration Check
 Yes - Digital system allows raw signal validation (milli-watts)
• Communications
 Optional Modbus®
• Approvals
 Not Available
• Field Configurable
 Please contact Flotech
• Flow Accuracy
 +/- 0.5% of Full Scale +/- 1% of reading
• Flow Repeatability
 0.20%
• Respond Time
 1 second
• Gas Temperature Range
 -40°C to 90°C Standard (for higher temperature options, contact Flotech)
• Gas Pressure
 500 PSIG (if higher pressure needed, contact Flotech)
• Flow Output
 4 to 20 mA for Rate; 24VDC pulse for Totalized value
• Temperature Output
 N/A
• Ambient Temperature
 -20°C to 65°C
• Flow Body
 N/A
• Probe Style / Length
 1/2" OD Probe (3/4" optional) Lengths 6" to 36"
• Relays
 Not Available
• Cable Length
 Not Applicable
• Flow Conditioning
 Captive Flow Conditioners available upon request with meter purchase

FRL30 (In-line Remote)
• Sensor
 Two reference grade platinum RTD clad in 316SS sheath
• Wetted Part
 SS316
• Power
 24VDC / 115VAC / 230VAC changeable
• Power Dissipation
 <2.5 W
• Electronics
 Remote-style Microprocessor based
• Electronics Enclosure
 N/A
• Flow Body / Probe Enclosure
 Junction Box is indoor/outdoor enclosure (no electronics)
• Transmitter Enclosure
 Remote mount, NEMA 4 enclosure
• Display
 High contrast photo-emissive OLED graphical display (Flow rate, Totalizer, Temperature)
• Turn Down
 100 to 1
• Resolution
 1000 to 1
• Low End Sensitivity
 5 SFPM
• Field Calibration Check
 Yes - Digital system allows raw signal validation (milli-watts)
• Communications
 Optional Modbus®
• Approvals
 Not Available
• Field Configurable
 Please contact Flotech
• Flow Accuracy
 +/- 0.5% of Full Scale +/- 1% of reading
• Flow Repeatability
 0.20%
• Respond Time
 1 second
• Gas Temperature Range
 -40°C to 90°C Standard (for higher temperature options, contact Flotech)
• Gas Pressure
 500 PSIG (if higher pressure needed, contact Flotech)
• Flow Output
 4 to 20 mA for Rate; 24VDC pulse for Totalized value
• Temperature Output
 N/A
• Ambient Temperature
 -20°C to 65°C
• Flow Body
  SS316 Schedule 40 Flow Bodies sized from 1/4" x 6" long to 4" x 12" long. Male NPT ends standard (Flanges and other options available)
• Probe Style / Length
 N/A
• Relays
 Not Available
• Cable Length
 7.5 m Standard (max. length 300 m)
• Flow Conditioning
 Flow Conditioners are built in to In-Line Style Flow Bodies from 1/2" to 4"

FRI30 (Insertion Remote)
• Sensor
 Two reference grade platinum RTD clad in 316SS sheath
• Wetted Part
 SS316
• Power
 24VDC / 115VAC / 230VAC changeable
• Power Dissipation
 <2.5 W
• Electronics
 Remote-style Microprocessor based
• Electronics Enclosure
 N/A
• Flow Body / Probe Enclosure
 Junction Box is indoor/outdoor enclosure (no electronics)
• Transmitter Enclosure
 Remote mount, NEMA 4 enclosure
• Display
 High contrast photo-emissive OLED graphical display (Flow rate, Totalizer, Temperature)
• Turn Down
 100 to 1
• Resolution
 1000 to 1
• Low End Sensitivity
 5 SFPM
• Field Calibration Check
 Yes - Digital system allows raw signal validation (milli-watts)
• Communications
 Optional Modbus®
• Approvals
 Not Available
• Field Configurable
 Please contact Flotech
• Flow Accuracy
 +/- 0.5% of Full Scale +/- 1% of reading
• Flow Repeatability
 0.20%
• Respond Time
 1 second
• Gas Temperature Range
 -40°C to 90°C Standard (for higher temperature options, contact Flotech)
• Gas Pressure
 500 PSIG (if higher pressure needed, contact Flotech)
• Flow Output
 4 to 20 mA for Rate; 24VDC pulse for Totalized value
• Temperature Output
 N/A
• Ambient Temperature
 -20°C to 65°C
• Flow Body
 N/A
• Probe Style / Length
 1/2" OD Probe (3/4" optional) Lengths 6" to 36"
• Relays
 Not Available
• Cable Length
 7.5 m Standard (max. length 300 m)
• Flow Conditioning
 Captive Flow Conditioners available upon request with meter purchase

Note: Specifications are subject to change without notice

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