Insertion type

flow switch for oil based media with transistor output

Operating principle: calorimetric
Measuring range: 0 - 30 cm/s to 0 - 300 cm/s,

continuously adjustable

Protection class: IP65
Operating voltage: 18 - 30 VDC

Options: different sensor head sizes and lengths, different materials, BSP and NPT, cooling version up to 130 °C / 266 °F (S101) 

Also available for water based media.

Download:

Data sheet 412x.1x

User manual 412x.1x

flow switch for oil based media with transistor output in a rugged stainless steel version (full encapsulation)

Operating principle: calorimetric
Measuring range: 0-30 cm/s up to 0-300 cm/s,

continuously adjustable
Protection class: IP67 

Operating voltage: 18 - 30 VDC, 10.5 - 36 VDC or 19 - 72 VDC

Options: different sensor head sizes and lengths, different materials, BSP and NPT, cooling version up to 130 °C (4121.1xMK)​​​​

Also available for water based media. 

Downloads:

Data sheet 412x.1xM 18-30 VDC

Data sheet 412x.1xM 10.5-36 VDC

Data sheet 412x.1xM 19-72 VDC

User manual 412x.1xM

flow switch for oil based media in a rugged stainless steel housing (full encapsulation) 

Electrical output:
4121.40/.41M   relay output
4121.42/.43M   optocoupler output

Operating principle: calorimetric 
Measuring range: 0 - 30 cm/s up to 0 - 300 cm/s,

continuously adjustable
Protection class: IP67

Operating voltage: 18 - 30 VDC

Further versions:
4121.40/.41M S140 (Brad-Harrison-plug)
4121.40/.41M S141 (Binder-plug)
4121.40/.41M S150 (relay for 250 VDC / 280 mA)

4221.40/.41M (with additional analogue temperature output)

Also available for water based media.

Download:

Data sheet 412x.40M/.41M

Data sheet 412x.40M/.41M S140

Data sheet 412x.40M/.41M S141

Data sheet 412x.42M/43M

Data sheet 422x.40M/.41M

Data sheet 422x.40M/41M S141

User manual 412x.40M/.41M

flow switch for oil based media in a rugged stainless steel version (full encapsulation) with solid state relay output (SSR)

Electrical output: solid state relay output
Operating principle: calorimetic

Measuring range: 0 - 30 cm/s up to 0 - 300 cm/s, 

continuously adjustable

Protection class: IP67
Operating voltage: 90 - 250 VAC/DC

Further versions:
4121.5xM S141 (4-pol. Binder male socket)
4121.5xMA S110/xx (different sensor head lengths)

4221.5xM (with additional analogue temperature output)

Also available for water based media. 

Download:

Data sheet 412x.5xM

Data sheet 412x.5xM S141

Data sheet 422x.5xM

User manual 412x.5xM

flow switch for oil based media in a rugged stainless steel version (full encapsulation) with relay output VAC/DC

Electrical output: relay output

Operating principle: calorimetic
Measuring range: 0 - 30 cm/s up to 0 - 300 cm/s,

continuously adjustable

Protection class: IP67

Operating voltage: 90 - 250 VAC/DC

Further versions:
4121.8xM S140 (Brad-Harrison-plug)
4121.8xM S141 (Binder-plug)

4121.8xM S142 (UV-protected cable)
4121.8xMK (cooling version up to 130 °C)

4221.8xM (with additional analogue temperature output)

Also available for water based media.

Download:

Data sheet 412x8xM

Data sheet 412x.8xM S140

Data sheet 412x.8xM S141

Data sheet 412x.8xMK S140

Data sheet 422x.8xM S141

User manual 412x.8xM

flow switch for oil based media / high temperature

(remote system)

Medium temperature: up to max. 140 °C / 284 °F (S100)
Operating principle: calorimetric
Measuring range: 0 - 30 cm/s up to 0 - 300 cm/s,

continuously adjustable

Operating voltage: 18 - 30 VDC

Options: different sensor head sizes and lengths (S110/xx),

different materials, BSP and NPT,

Also available for water based media.

Download:

Data sheet 4120 S100 + 402x.13 S100