S-401

Insertion Type

FEATURES

  • Thermal mass flow, independent of pressure and temperaturechanges
  • Measures standard flow, mass flow and consumption
  • Installation under pressure through 1/2” ball valve
  • Sensor can be calibrated in 2 different gases
  • Selectable gas type (Some gases require real gas calibration!)
  • With the integrated display users can see the actual flow and the total consumption
  • IP65 casing provides robust protection in rough industrialenvironment
  • Isolated mA and pulse output signals or Modbus/RTU interface
  • Very fast response time, high accuracy and wide measuring range
  • Tube diameters of DN25 to DN500
  • 2 installation types: center installation and 100 mm insertiondepth installation for bigger pipes (> DN250)

PRODUCT DESCRIPTION

FEATURES AT A GLANCE
  • Measures standard flow, mass flow and consumption
  • 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 or
  • Modbus/TCP interface (with PoE option)
  • Selectable gas type (Some gases require real gas calibration!)
  • Sensor can be calibrated in 2 different gases
BENEFITS
  • Tube diameters of DN25 and above
  • 2 installation types: center installation and 100 mm insertion depth installation for bigger pipes (> DN250)
  • Installation under pressure through 1/2” ball valve
INSTALLATION AND SENSOR REMOVAL

TECHNICAL DATA
General Specifications
Accuracy 1.5 % of reading + 0.3 % full scale (Optional high accuracy: 1% of reading + 0.3% FS)
Repeatability 0.25 % of reading
Sampling rate > 10 samples / sec
Reference conditions Can be set by user. Standard conditions are Ps = 0.1 MPa and Ts = 20 °C
Medium conditions: -30 ... +140 °C / relative humidity < 90 % no condensation
Transport Temperature: -30 ... +70 °C
 

Material:

Metal parts 1.4404 (SUS 316L) Casing PC + ABS

Sensor: Ceramic with glass coating

Classification: IP65
Electrical connection: 2 x M12, 5 poles (2 x M12 plug with screw terminals included)
Approvals: CE, RoHS, FCC
 

Operating temperature

-30 ... +140 °C fluid temperature

-30 ... +70 °C casing

-10 ... +50 °C casing with display

Operating pressure S401: 0 ... 5.0 MPa (>1.6 MPa need installation device) S421: 0.... 1.6 MPa (Optional: 4.0 MPa)
 

Analogue output

Signal: Scaling: Max load: 4 ... 20 mA, isolated 0 ... max flow

250R

 
Pulse output Signal: Scaling: Isolated switch output, normally open, Max 30 VDC, 20 mA 1 pulse per consumption unit  
Modbus output Isolated RS-485 with Modbus/RTU protocol or Modbus/TCP output (with PoE option)
Power supply 15 ... 30 VDC / 200 mA
Volumetric flow ranges S401 S421
Inch DN Di (mm) S 401-S

(m3/h)

S 401-M

(m3/h)

S 401-H

(m3/h)

Measuring range from to
½” DN15   - - - 0.5 ... 90 m³/h
¾” DN20   - - - 0.9 ... 170 m³/h
1” DN25 27.3 0.5 ... 147.7 0.6 ... 294.7 0.6 ... 356.9 1.5 ... 290 m³/h
1¼” DN32 36.0 0.9 ... 266.3 1.2 ... 531.5 1.2 ... 643.5 2 ... 500 m³/h
1½” DN40 41.9 1.2 ... 366.7 1.5 ... 731.9 1.5 ... 886.2 3 ... 700 m³/h
2” DN50 53.1 2.0 ... 600.1 2.5 ... 1197.6 3.0 ... 1450.0 4 ... 1000 m³/h
2½” DN65 68.9 3.5 ... 1026.5 5.0 ... 2048.6 5.0 ... 2480.4 6 ... 1500 m³/h
3” DN80 80.9 5.0 ... 1424.4 7.0 ... 2842.7 7.0 ... 3441.9 8 ... 2500 m³/h
4” DN100 100.0 10 ... 2183.3 12 ... 4357.2 12.0 ... 5275.7  
5” DN125 125.0 13 ... 3419.6 18 ... 6824.4 18.0 ... 8263.1
6” DN150 150.0 18 ... 4930.1 25 ... 9838.9 25.0 ... 11913.1
8” DN200 200.0 26 ... 8785.6 33 ... 17533.3 42.0 ... 21229.5
10” DN250 250.0 40 ... 13743.9 52 ... 27428.5 60.0 ... 33210.7
12” DN300 300.0 60 ... 19814.8 80 ... 39544.1 100.0 ... 47880.4

Stated measuring ranges under following conditions:

Standard flow in air Reference pressure: 1000 hPa

Reference Temperature: +20 °C

The table above shows the air flow ranges for pipe sizes up to DN300 at standard conditions. At other reference conditions and gas types the flow range may vary, please contact your local sales support.

Furthermore it is possible to measure the air flow in bigger pipes (> DN300), for this please contact your local sales support.

DIMENSION

ORDERING
S401 Thermal Mass Flow Meter (Insertion type)
Order No. Code Description
S695 4100 S4010 S401 Thermal Mass Flow Meter, 220mm shaft
S695 4101 S4011 S401 Thermal Mass Flow Meter, 300mm shaft
S695 4102 S4012 S401 Thermal Mass Flow Meter, 400mm shaft
S695 4103 S4013 S401 Thermal Mass Flow Meter, 160mm shaft
Connection thread
Standard A G 1/2”
A1006 B PT 1/2” Adapter
A1005 C NPT 1/2” Adapter
Gas type 1
A1007 A Air
A1008 B CO2
A1009 C O2 (Oil- & grease-free cleaned)
A1010 D N2
A1011 E N2O
A1012 F Argon
A1013 G Natural Gas
A1014 H H2 (real gas calibration)
A1015 I Other gas (Please specify)
A1016 J He (real gas calibration)
A1017 K C3H8
  Z No Second Gas
Gas type 2 (same selections as above)
Range
  A Standard range version (92,7 m/s)
A1401 B Max range version (185 m/s), only for S401
A1402 C High speed range version (220 m/s), only for S401
A1403 D Low range version (1/3 or standard range)
A1407 F Vacuum / Atmospheric range (1/3 of standard range)
Calibration
  A Standard calibration
A1405 C Bi-directional calibration, only for S401
A1404 E High accuracy calibration (1 % ± 0.3 %F.S.)
Output
A1410 A Analog 4 ... 20 mA, Pulse output
A1411 B Modbus/RTU output
A1413 C Analog 4 ... 20 mA, Pulse output compatible to S400
A1424 D Modbus/TCP output (including 5 m M12- cable with RJ45 Plug) (with PoE option)
Display
  A Without display                                    Standard
A1420 B With display
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