Back to Products
S421 Insertion Thermal Mass Flow Sensors

S421 Insertion Thermal Mass Flow Sensors

S421 In-Line Thermal Mass Flow Sensors measures standard flow, mass flow and consumption, independent of pressure and temperature changes.

  • Robust: IP65 casing provides protection in rough industrial environment
  • Informative: high accuracy, wide measuring range, rapid response time
  • Versatile: sensors can be easily swapped out

Description

S421 Insertion Thermal Mass Flow Sensors

Description

The S421 In-Line Thermal Mass Flow Sensors is built to measure standard flow, mass flow, and consumption in rugged industrial environments. With a rapid response time and an operating range of up to -30…+140°C fluid temperature, the S421 provides detailed flow metrics in areas that might be otherwise impossible.

Benefits

Benefit Icon

Safer Workplace

Provides automated measurements from dangerous areas

Benefit Icon

Easier Audits

Detailed metrics from risky areas proves safety

Benefit Icon

Better View of Your Operation

Better information from previously difficult to measure areas

Features

Features

  • 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 interface 
  • Selectable gas type (Some gasses require real gas calibration!) 
  • Sensor can be calibrated in 2 different gasses.

Specs

Specs

  • Accuracy:   1.5% of reading + 0.3% full scale (Optional 1% of reading)
  • 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:  0 … 1.6 MPa (Optional: 4.0 MPa)
  • Analogue output:
    • Signal:  4 … 20 mA, isolated
    • Scaling:  0 … max flow
    • Max load:  250R
  • Pulse output:
    • Signal:  Isolated switch output, normally open, Max 30 VDC, 20 mA
    • Scaling:  1 pulse per consumption unit
  • Modbus output:  Isolated RS-485 with Modbus/RTU protocol
  • Power supply:  15 … 30 VDC / 200 mA

Documents

S401_S421 - Catalog

Catalog Cover S401_S421 - Catalog (5 MB)

S421 - Manual

Catalog Cover S421 - Manual (3 MB)