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KES Mass Flowmeter
Brand: KOBOLD Instruments, Inc
The KOBOLD KES type series thermal mass flow meters measure the flow of gases, independent of variations in process pressure and temperature.
The flow meters are available in different versions for pipe nominal sizes from 1/4" to DN 200, pressures up to 16 bar and gas temperatures up to 175° C.
The KES probe consists of 2 sensors: a temperature sensor for sensing gas temperature, and a sensor for measuring flow velocity. This sensor element is heated by the control electronics to a constant temperature difference with respect to the medium temperature.
Specifications
Accuracy
- +0.5 % of Reading, at (0° to 50° C [32° to 122° F] & bar: 0.3 to 2)
- ± 1 % of Full Scale
Ambient Temperature Range
- 0° to 50° C (32° to 122° F)
Approvals & Certifications
- ANSI
Communication
- RS-232 with Modbus Communication Protocol
Enclosure, Body Material
- Powder-Coated Aluminum
Environmental Protection
- IP65
Flange Size - 1-1/2” (DN 40)
- 1-1/2” (DN 40) - 150# ANSI
- 1-1/2” (DN 40) - PN 16
Flange Size - 1” (DN 25)
- 1” (DN 25) - 150# ANSI
- 1” (DN 25) - PN 16
Flange Size - 1/2” (DN 15)
- 1/2” (DN 15) - 150# ANSI
Flange Size - 2” (DN 50)
- 2” (DN 50) - 150# ANSI
- 2” (DN 50) - PN 16
Flange Size - 3” (DN 80)
- 3” (DN 80) - 150# ANSI
- 3” (DN 80) - PN 16
Flange Size - 3/4” (DN 20)
- 3/4” (DN 20) - 150# ANSI
Flange Size - 4” (DN 100)
- 4” (DN 100) - 150# ANSI
- 4” (DN 100) - PN 16
Flange Size - 6” (DN 150)
- 6” (DN 150) - 150# ANSI
- 6” (DN 150) - PN 16
Flange Size - 8” (DN 200)
- 8” (DN 200) - 150# ANSI
- 8” (DN 200) - PN 16
Function
- Counter - 7 to 8-Digit, with Reset
Indication
- LCD Display - 2 x 12-Digit LCD, Backlight
Insertion 'U' Length
- 152 to 914 mm - Industrial Version
- 95 to 330 mm - Standard Version
Maximum System Pressure
- psi: 116 (kPa: 800, bar: 8)
Media
- All Typicals of Non-Aggressive Gases
Nominal Pressure
- psi: 232.1 (bar: 16, kPa: 1,600)
NPT Connection
- 1” NPT Male
- 1/2” NPT Male
- 1/4” NPT Female
- 1-1/2” NPT Male
- 2” NPT Male
- 3” NPT Male
- 3/4” NPT Male
- 4” NPT Male
- 6” NPT Male
- 8” NPT Male
Output
- 0-5 Vdc, 1,000 ohms Min.
- 4-20 mA, 700 ohms, Max.
Output Format
- Relay Output
Pipe Connection
- 1” Pipe (DN 25)
- 1/2” Pipe (DN 15)
- 1/4” Pipe (DN 8)
- 1-1/2” Pipe (DN 40)
- 2” Pipe (DN 50)
- 3” Pipe (DN 80)
- 3/4” Pipe (DN 20)
- 4” Pipe (DN 100)
- 6” Pipe (DN 150)
- 8” Pipe (DN 200)
Power Requirement
- 18-30 Vdc
- 625 mA - Max.
Pressure Type
- Relative
Process Temperature
- -10° to 175° C (14° to 347° F) - Industrial Version
- -10° to 80° C (14° to 176° F) - Standard Version
Relay Output
- 140 mA
- Maximum
Repeatability
- ± 0.2 % of Full Scale
Response Time
- 1 second (Up to Indication of 63 % of the Real Flow Rate)
- 200 milliseconds - up to Indication of 63 % of the Real Flow Rate
Sensor / Probe Material
- 316L Stainless Steel - Wetted Material
Supply Pressure Effect
- 0.3 % / bar for Air
Temperature Effect
- ± 0.04 % of Reading/°C within ± 25° C of Calibration Value
- ± 0.06 % of Reading/°C between ± 25° to ± 50° C of Calibration Value
Temperature Range
- Maximum
Wetted Materials
- 316L Stainless Steel, 1.4435
