Airflow Meters

Airflow monitor for observation of gaseous media.

Output: 1 potential free changer

Switch-point continuously adjustable, approx. 0.1m/s to 30m/s

Suitable sensors: F2, F3, F4.2, F4.3, F9

Building class tested and approved by TÜVNORD complying to DIN EN 61010-1:2011-07, Tested at 27.02.2018

Airflow monitor for observation of gaseous media

Signal output flow: 1 changer

Current and contact capacitance: 250VAC, 10A, 2.5kVA

Behavior at flow: Relay connects

Start-up suppression: adjustable, approx. 5s to 60s

Media temperature: -20°C to +120°C

Switch-point: adjustable via potentiometer

Measurement range: 0.1m/s to 30m/s

Suitable sensors: F2, F3, F4.2, F4.3

Cabinet: Standard cabinet N45

Building class tested and approved by TÜVNORD complying to DIN EN 61010-1:2011-07, Tested at 27.02.2018

Compact airflow monitor for gaseous media

Signal output flow: 1x changer

Current and contact capacity: 250VAC, 6A, 1.5kVA

Behavoir at flow: Relay connects

Signal at flow: yellow LED

Start-up suppression: 60s (activated by jumper)

Meda temperature: -10°C to +80°C (optionally -25...+90°C RLSW5/F3)

Process connection: PG7, flange (option)

Sensor material: MS58, nickel-plated

Pressure resistance: 10bar

Protection class sensor: IP67

Cabinet dimensions (LxWxH): 56mmx84mmx82mm

Building class tested and approved by TÜVNORD in compliance to DIN EN 61010-1:2011-07, Tested 27.02.2018

The monitor NLSW45-3Ex is used with two Z-barriers (included in delivery) and flow sensors F3.*Ex.The flow sensors can be used as follows:  In Zone 2 (Gas, Category 3G, EPL Gc) in the explosion groups IIA, IIB, and IIC.  The qualification with regard to the surface temperature is T4; for all gases, vapours and mists with an ignition temperature > 135°C the equipment is not an ignition source. The requirements for simple electrical apparatus according to IEC60079-11, valid for the gas- hazardous area of Zone 1 are met.

The NLSW45-3Ex must be installed outisde of the explosive area.

Power consumption: 4VA

Signal output flow: 1x changer

Current and contact capacitance: 250VAC, 10A, 2.5kVA

Media temperature: -10°C to +75°C

Switch-point: adjustable with potentiometer

Measurement range: approx. 0.1m/s to 20m/s

Cabinet dimensions (LxWxB): 120mmx5mmx73mm

Suitable sensors: F3Ex, F3.1Ex, F3.2Ex, F3.3Ex (not included in delivery)

Airflow monitor for observation of gaseous media

Signal output flow: 1xchanger

Contact capacitance: 250VAC, 10A, 2.5kVA

Media temperature: -20°C to +250°C

Switch-point: adjustable via potentiometer

Measurement range air: approx. 0.1m/s to 30m/s

Suitable sensors: F8, F8.1, F8.2, F8.3

Standard cabinet: N45

The monitor is used with air-flow sensors F8Ex and two Z-barriers (included in delivery). It's able to watch flows of gaseous media in Zone 2 and temperature class T1. The NLSW45-6Ex must be installed outisde of the explosive area.

Power consumption: 4VA

Signal output flow: 1x changer

Current and contact capacitance: 250VAC, 10A, 2.5kVA

Media temperature: -20°C to +250°C

Switch-point: adjustable with potentiometer

Measurement range: approx. 0.1m/s to 20m/s

Cabinet dimensions (LxWxB): 120mmx45mmx73mm

Suitable sensors: F8Ex, F8.1Ex, F8.2Ex, F8.3Ex (not included in delivery!)

Airflow monitor applicable up to +400°C

Signal output flow: 1x changer

Contact capacitance: 250VAC, 10A, 2.5kVA

Media temperature: -20°C to +250°C

Switch-point: adjustable via potentiometer

Start-up suppression: adjustable, approx. 2s to 60s

Measurement range air: approx. 0.1m/s to 30m/s

Media temperature: -20°C to 400°C

Suitable sensors: F8-400, F8.1-400, F8.2-400, F8.3-400 

Standard cabinet: N45

Airflow monitor

Signal output flow: 1 changer

Current and contact capacitance: 250VAC, 10A, 2.5kVA

Analogue output: 0 to 10V/0 to 20mA, relatively

Media temperature: 0°C to +70°C

Switch-point: adjustable via potentiometer

Measurement range: 0.5m/s to 30m/s

Cabinet: Standard case N75

Suitable sensors: F3, F3.1, F3.2, F3.3, F4.2, F4.3

Compact airflow monitor for observation of gaseous media

Supply voltage: 24V AC/DC

Transistor/Relay output: Relay 250VAC, 5A, 1.2kVA

Media temperature: -10°C to +80°C

Switch-point: adjustable via potentiometer

Measurement range: 0.1m/s to 15m/s

Sensor: integrated

Immersion depth: 50mm (optionally 140mm RLSW4R/140)

Process connection: PG7/flange (option)

Sensor material: MS58, nickel-plated

Pressure resistance: 10bar

Protection class cabinet: IP65

Protection class sensor: IP67

Cabinet dimensions (LxWxH): 30mmx50mmx65mm

Optional accessory: flange 14mm, reducer G1/2"/PG7

Compact airflow monitor for observation of gaseous media

Supply voltage: 24V AC/DC

Transistor/Relay output: Relay 250VAC, 5A, 1.2kVA

Media temperature: -10°C to +80°C

Swicht-point: adjustable via potentiometer

Measurement range: 0.1m/s to 15m/s

Sensor: integrated

Immersion depth:140mm (also 50mm available RLSW4R)

Process connection: PG7/flange (option)

Sensor material: MS58, nickel-plated

Pressure resistance: 10bar

Protection class cabinet: IP65

Protection class sensor: IP67

Cabinet dimensions (LxWxH): 30mmx50mmx65mm

Optional accessory: flange 14mm, reducer G1/2"/PG7

Compact airflow monitor with analogue output 

(Supply voltage: 24V AC/DC)

This compact air flow monitor with analogue output displays the strength of flow relatively and evaluates it. The range of the analogue output can be set manually to 10V according to your maximum flow.

Power consumption: max. 2VA

Signal output flow: 0V to 10V (Ra=10kOhms), relatively

Accuracy output signal: +/-10%

Reproduceability output signal: 1%

Measuring range: 0.1m/s to 30m/s

Sensor: integrated

Immersion depth: 130mm

Process connection: PG7/flange (option)

Sensor material: MS58, nickel-plated

Pressure resistance: 10bar

Cabinet dimensions: (LxWxH): 56mmx84mmx82mm

Compact airflow monitor for gaseous media

Signal output flow: 1x changer

Current and contact capacity: 250V AC, 6A, 1.5kVA

Behavior at flow: Relay connects

Signal at flow: yellow LED

Start-up suppression: 60s (activated by jumper)

Media temperature: -20°C to +90°C  (optionally -30...+90°C)

Process connection: PG7, flange (option)

Sensor material: MS58, nickel-plated

Pressure resistance: 10bar

Protection class sensor: IP67

Cabinet dimensions (LxWxH): 56mmx84mmx82mm

Building class tested and approved by TÜVNORD in compliance to DIN EN 61010-1:2011-07, Tested at 27.02.2018

Compact airflow monitor for gaseous media

Power consumption: 4VA

Signal output flow: 0 to 10V (Ra=10kOhms), relatively

Signal output flow: 0 to 20mA (Ra=0.2kOhms), relatively

Accuracy of output signal: +/- 10%

Media temperature: 0 to +70°C

Measurement range: 0.1m/s to 30m/s

Sensor: integrated

Sensor material: MS58, nickel-plated

Immersion depth: 130mm

Process connection: PG7, flange (option)

Pressure resistance: 10bar

Protection class sensor: IP67

Cabinet dimensions (LxWxH): 56mmx84mmx82mm

Airflow monitor for gaseous media

Power consumption: max. 5VA

Signal output flow: 1 changer

Current and contact capacitance: 250VAC, 10A, 2.5kVA

Behavior at flow: Relay connects, red LED enlightens

Signal output alarm: 1x changer

Behavior at flow: Relay connects, yellow LED enlightens

Start-up suppression: adjustable via potentiometer, approx. 15s to 120s

Break delay: adjustable via potentiometer, approx. 2s to 20s

Media temperature: -10°C to +80°C (optional_ 20°C to +100°C)

Switch-point: adjustable via potentiometer

Measurement range: 0.1m/s to 25m/s

Including sensor: F9

Protection class cabinet: IP65

Protection class sensor: IP67

Cabinet dimensions: (LxWxH): 55mmx160mmx80mm

Flow monitor for air and water

Power consumption: max. 4VA

Signal output flow: 1x changer

Contact capacitance: 250VAC, 10A, 2.5kVA

Media temperature: -15°C to +80°C

Switch-point: adjustable via potentiometer

Measurement range air/water: approx. 0.5m/s to 20m/s / 0.05m/s to 3m/s

Reaction time typical/max.: 1s to 10s / approx. 1min

Suitable sensors: F6.1, F6.2, F6.3, F6.4, F6.5

Standard cabinet: N45

Cabinet dimensions: (LxWxH): 12mmx45mx73mm

Building class tested and approved by TÜVNORD complying to DIN EN 61010-1:2011-07, Tested at 27.02.2018

Flow monitor for air and water

Power consumption: max. 4VA

Signal output flow: 1x changer

Contact capacitance: 250VAC, 6A, 1.5kVA

Switching behavior at flow: relay connects

Media temperature: -15°C to +80°C

Measurement range

• Air approx. 0.5-20m/s
• Water approx. 0.05-3m/s

Reaction time: typ./max.: 1s/10s

Start-up suppression: integrated

Suitable sensors: F6.1, F6.2, F6.3, F6.4, F6.5

Cabinet dimensions (LxWxH): 120mmx45mmx73mmm

Building class tested and approved by TÜVNORD complying to DIN EN 61010-1:2011-07, Tested at 27.02.2018

Compact flow monitor able to observe air and water flows as well as cooling circuits with a glycol content of up to 30%

Power consumption: max. 4.5VA

Signal output flow: 1x changer

Contact capacitance: 250VAC, 6A, 1.5kVA

Switching behavior at flow: relay connects

Media temperature: -10°C to +80°C

Measurement range

• Air approx. 0.5-30m/s
• Water approx. 0.05-3m/s

Sensor: integrated

Immersion depth: 48mm (alternatively: 150mm)

Process connection: G1/4" (alternatively: 1/2")

Sensor material: stainless steel V2A

Pressure resistance: 20bar

Protection class cabinet: IP65

Protection class sensor: IP67

Cabinet dimensions (LxWxH): 56mmx84mmx82mmm

Image shows 1/2" version!

Building class tested and approved by TÜVNORD complying to DIN EN 61010-1:2011-07, Tested at 27.02.2018

Compact flow monitor able to observe air and water flows as well as cooling circuits with a glykol content of up to 30%

Power consumption: max. 4.5VA

Signal output flow: 1x changer

Contact capacitance: 250VAC, 6A, 1.5kVA

Switching behavior at flow: relay connects

Media temperature: -10°C to +80°C

Measurement range

• Air approx. 0.5-30m/s
• Water approx. 0.05-3m/s

Sensor: integrated

Immersion depth: 48mm (alternatively 150mm)

Process connection: G1/2" (alternatively G1/4")

Sensor material: stainless steel V2A

Pressure resistance: 20bar

Protection class cabinet: IP65

Protection class sensor: IP67

Cabinet dimensions (LxWxH): 56mmx84mmx82mmm

Photo shows 1/2" version!

Building class tested and approved by TÜVNORD complying to DIN EN 61010-1:2011-07, Tested at 27.02.2018

Compact flow monitor able to observe air and water flows as well as cooling circuits with a glycol content of up to 30%

Supply voltage 230V AC

Power consumption: max. 4.5VA

Signal output flow: 1x changer

Contact capacitance: 250VAC, 6A, 1.5kVA

Switching behavior at flow: relay connects

Media temperature: -10°C to +80°C

Measurement range

• Air approx. 0.5-30m/s
• Water approx. 0.05-3m/s

Sensor: integrated

Immersion depth: 150mm (alternatively 48mm)

Process connection: G1/4" (alternatively G1/4")

Sensor material: stainless steel V2A

Pressure resistance: 20bar

Protection class cabinet: IP65

Protection class sensor: IP67

Cabinet dimensions (LxWxH): 56mmx84mmx82mmm

Photo shows 1/2" version!

Building class tested and approved by TÜVNORD complying to DIN EN 61010-1:2011-07, Tested at 27.02.2018

Airflow monitor for observation of gaseous media

Output: 1 potential free changer

Start-up suppression: integrated, not adjustable

Switch-point continuously adjustable, approx. 0.5m/s to 30m/s

Suitable sensors: F2, F3, F4.2, F4.3, F9

Building class tested and approved by TÜVNORD complying to DIN EN 61010-1:2011-07

Airflow monitor for observation of gaseous media

Output:1x NCC, 1x NOC

Start-up suppression: integrated, approx. 60s

Switch-point continuously adjustable, approx. 0.1m/s to 20m/s

Suitable sensors: F2, F3, F4.2

Flow monitoring of gaseous media with high velocities from 10m/s 

Output: 1x NCC, 1x NOC

Switch-point can be set continuously, approx. 10m/s to 20m/s 

Media temperature: 0°C to +70°C

Suitable sensors: F2 Sond.1

Airflow monitor for observation of gaseous media

Signal output flow: 1 changer

Current and contact capacitance: 250VAC, 10A, 2.5kVA

Behavior at flow: Relay connects

Start-up delay: intergrated, approx. 60s

Media temperature: -10°C to +80°C

Switch-point: adjustable via potentiometer

Measurement range: 0.1m/s to 15m/s

Cabinet: Standard cabinet N45

Suitable sensors: F7, F7Sond1

Compact flow monitor for air and water as well as cooling circuits with a glycol content of up to 30%

Power consumption: max. 4.5VA

Signal output flow: 1x changer

Contact capacitance: 250VAC, 6A, 1.5kVA

Switching behavior at flow: relay connects

Media temperature: -10°C to +80°C

Measurement range

• Air approx. 0.5-30m/s
• Water approx. 0.05-3m/s

Sensor: integrated

Immersion depth: approx. 150mm (alternatively 48mm)

Process connection: G1/2" (alternatively G1/4")

Sensor material: stainless steel V2A

Pressure resistance: 20bar

Protection class cabinet: IP65

Protection class sensor: IP67

Cabinet dimensions (LxWxH): 56mmx84mmx82mmm

Photo shows 1/2" version!

Accessories for airflow sensors and RLSW-housing

Mounting flange, reducer, wall mounting set

The flow monitor NLSW45-3Ex is used with two Z-barriers (included in delivery) and flow sensors F3.*Ex. Applicable range of the flow sensors: In Zone 2 (Gas, Category 3G, EPL Gc) in the explosion groups IIA, IIB, and IIC. Its unique feature is the analogue signal output. The qualification with regard to the surface temperature is T4; for all gases, vapours and mists with an ignition temperature >135°C the equipment does not present an ignition source. The requirements for simple electrical apparatus according to IEC60079-11, valid for the gas-hazardous area of Zone 1 are met.

The NLSW75-AEx must be installed outside of the explosive area.

Power consumption (max.): 5VA/W

Signal output flow: 1x changer, 0 - 10 V and 4 - 20mA

Current and contact capacitance: 250VAC, 6A, 1,5kVA

Media temperature: 0°C to +60°C

Switch-point: adjustable via potentiometer

Measurement range: approx. 0.5m/s to 20m/s

Cabinet dimensions (LxWxB): 112mmx75mmx73mm

Suitable sensors: F3Ex, F3.1Ex, F3.2Ex, F3.3Ex (not included in delivery)