Compressed air system | HVAC System

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S 421

Flow sensor S 421 inline type where high accuracy is priority

Common Features:
 
• Measures standard flow, mass flow, consumption and temperature
• Thermal mass flow, independent of pressure and temperature changes
• IP65 casing provides robust protection in rough industrial environment
• Very fast response time
• High accuracy and wide measuring range
• Isolated mA and pulse output signals or Modbus/RTU interface
• Selectable gas type (some gases require real gas calibration!)
• App for mobile phones and tablets for sensor settings via BlueTooth
• Sensor can be calibrated in 2 different gases
 

Download

  1. Instruction Manual S421

  2. Datasheet S421


 

Features S 421:

• Pipes sizes available: DN32, DN40, DN50, DN65, DN80
• Process connections available: R thread, flange EN1092-1, ANSI/B16.5
• Exchangeable sensor unit (easy sensor swap)
• Integrated flow conditioner --> no straight inlet requirements

 


Technical Data

Technical data S 421
Measured unit m³/h, m³/min, l/min, cfm, m/s, kg/min, kg/h, kg/s
Accuracy ± 1.5% of reading + 0.3% full scale
Medium Air, gas, non explosive.
Operating temperature

-30 ... +140 ºC probe tube
-30 ... 70 ºC casing

-10 °C ... +50 ºC casing with display

Operating pressure Up to 1.6 MPa
Analogue output Signal: 4 ... 20 mA, isolated
Scaling: 0 ... max range
Max.load: 250R
Pulse output
Signal: Isolated switch output, normally open, Max 30 VDC, 20 mA
Scaling: 1 pulse per consumption unit
Power supply 15 ... 30 VDC/ 200 mA

Volumetric flow ranges S 421

Connection thread

DN

Measuring range from to

*

1¼”

DN32

2 ... 500 m³/h

*

1½”

DN40

3 ... 700 m³/h

*

2”

DN50

4 ... 1000 m³/h

*

2½”

DN65

6 ... 1500 m³/h

*

3”

DN80

8 ... 2500 m³/h

Stated flow values are at standard conditions of Ps = 0.1MPa(a) and Ts = 20 °C with medium air.

 

                                         S421 Flange type

 

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If you have any querry, please contact us for further details!
 
Ms. Tham Tran (Alice)
Cell phone: (+84) 907 16 83 73
Email: thamtran@gotek.com.vn

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