Compressed air system | HVAC System

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S 420

S 420 ECONOMIC FLOW/CONSUMTION SENSORS

Features:
 
• Easy and affordable installation
• Units freely selectable via keypad m³/h, m³/min, l/min, l/s, g/min, kg/s, cfm
• Compressed air counter up to 1,999,999,999 m³
• Analogue output 4 ... 20 mA, pulse output (galvanically separated)
• High measuring accuracy also in the lower measuring range (ideal for leakage measurement)
• Negligible small loss of pressure
• Thermal mass flow principle, no additional pressure and temperature measurement necessary
• Gas types adjustable via software (N2, O2, CO2, N2O, Ar)
• Modbus interface (Optional)
 
 
Down load
 
 
Volumetric flow ranges S 420
 

Connection thread

DN

Inner pipe diam. mm

Measuring range from to

¼”

DN8

8.8

0.5 ... 90.1 l/min

½”

DN15

16.1

0.5 ... 90 m³/h

¾”

DN20

21.7

0.9 ... 170 m³/h

*

1”

DN25

27.3

1.5 ... 290 m³/h

 
Stated flow values are at standard conditions of Ps=0.1MPa(a) and Ts = 20 °C with medium air.
 
* Attention: Shortened inlet section! Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site.
 
Application range of S 420:
 
• Compressed air balancing, compressed air consumption measurement
• Leakage air / leak rate determination
• Mobile compressed air measurement in front of single machines/plants
• Flow measurement of process gases like e. g. N2, CO2, O2, Ar, N2O
• Flow measurement at nitrogen generators
 
 

  Technical data S 420                                                                       

Measuring units:

m³/h, m³/min, l/min, cfm, m/s, kg/min, kg/h,kg/s (Reference standard can be programmed) Default values:

*Air: Ps = 1000 hPa(a), Ts = 20 °C

all other gases: Ps = 1013 hPa(a), Ts = 0 °C

Accuracy:

± (2% of measured value + 0.3% full scale) Temperature drift: 0.05% / K

Pressure drift: 0.5% / MPa

Repeatability

± 0.5% of measured value

Stated accuracy at:

Ambient/process temperature 23 °C ± 3 °C Ambient/process humidity < 90%, no condensation

                         Process pressure at 0.6 MPa                                         

Process

  connection:            

R thread(ISO 7-1),

Flange EN 1092-1, ANSI / B16.5, JIS  B2220                                

Principle of measurement:

Thermal mass flow

Sensor:

Glass coated resistive sensor

Measuring medium:                                   

Air, N2, O2, Ar, N2O, CO2

Operating temperature:

-30 °C to +50 °C

-10 °C to +50 °C with local display

Operating pressure:

up to 1.6 MPa

up to 4.0 MPa (Optional)

Analogue output:

Signal:     4 to 20 mA

Scaling:  0 to maximum volume flow

Accuracy:  0.06 mA

Modbus output (default setting)

Mode: RTU

Baud rate: 19200

Device address: 1

Framing/parity/stop bit: 8, N, 1

Pulse output:

1 pulse per consumption unit, insulated switch output, max. 30 VDC, 20 mA

Power supply:

12-30 VDC, 100 mA

Display:

128 x 64 pixel, with backlight

Material:

Measuring section:

Stainless steel 1.4404 (SUS 316L)


* Ps: Standard pressure                   Ts: Standard temperature

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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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