Explosion-proof Differential pressure controller
Explosion-proof Differential pressure controller
Brief Description

D520/7DD Explosion-proof Differential pressure controller has bellows sensor, can be used in neutral gas and water like air, gas and water steam as well as liquid medium like water, oil and cryogen. The setting value is adjustable, adjust range is 0.02-1.

Details

Brief Description

D520/7DD Explosion-proof Differential pressure controller has bellows sensor, can be used in neutral gas and water like air, gas and water steam as well as liquid medium like water, oil and cryogen. The setting value is adjustable, adjust range is 0.02-1.6MPa, working pressure range is 0.05-2.5MPa.

 Main Technical Parameters

 Applicable to air, gas, water, hydraulic oil, lubricant oil, cryogen, light fuel oil, etc.

Working viscosity: ＜1×10-3m2/s

Switch: micro switch

Housing protection: IP65 (DIN40050, same as IP65 in GB4208)

Environment temperature: -20～+40℃

Medium temperature: 0～+95℃

Repeatability error: ≤ 1％

Vibration-resistant: Max. 2g

Contact capacity: AC 380V 6A(resistance)

 Specifications

D520/7DD switch difference is not adjustable

Setting value Range  MPa

Switch difference

not more

than (MPa)

Working pressure

MPa

Rated

MPa

Switch frequency

Sensor material

Female thread

Weight

Kg

Overall

size

Ordering

 No.

 

 

Range lower limit

Range upper limit

Housing

Bellows

0.02-0.1

0.02-0.16

0.025-0.25

0.03-0.4

0.012

0.012

0.015

0.02

0.015

0.017

0.02

0.025

0.05-1.6

2

2

2

2

10

10

10

10

Yellow steel

Stainless

steel

00Cr17Ni

14Mo2

(316L)

 

 

 

G1/4”

 

 

 

1.2

 

 

 

 

02

 

 

 

0859180

0859280

0859380

0859480

 

0.05-0.6

0.05-1

0.05-1.6

0.06

0.07

0.08

0.07

0.08

0.09

0.1-2.5

3

3

3

10

10

10

0859580

0859680

0859780

 D520/7DD switch difference is adjustable

Setting value Range  MPa

Switch difference

not more  than (MPa)

Working pressure

MPa

Rated

 

MPa

Switch frequency

Sensor material

Female

thread

Weight

kg

Overall size

Ordering No.

 

 

Range lower limit MPa

Range

Upper limit MPa

Case

Bellows

0.02-0.1

0.02-0.16

0.02-0.25

0.03-0.4

0.035-0.1

0.035-0.15

0.04-0.25

0.045-0.4

0.04-0.1

0.04-0.15

0.045-0.25

0.05-0.4

0.05

～

1.6

2

2

2

2

10

10

10

10

Yellow steel

Stainless steel

00Cr17

Ni14

M02

(316L)

G1/4"

G1/4"

G1/4"

G1/4"

1.25

1.25

1.25

1.25

 

 

 

02

0859180

0859280

0859380

0859480

0.05-0.6

0.05-1

0.05-1.6

0.16-0.4

0.17-0.8

0.18-1.2

0.17-0.4

0.18-0.8

0.2-1.2

0.1

～

2.5

3

3

3

10

10

10

G1/4"

G1/4"

G1/4"

1.25

1.25

1.25

0859580

0859680

0859780