Clark Solutions
120 Series, Pressure, Vacuum, Diff. Pressure & Temp. Switches
Explosion Proof, Adjustable Ranges 30" Vac to 6000 PSI,
-180°F to 650°F

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J120, SINGLE SWITCH WITH INTERNAL ADJUSTMENT, DUAL CONDUITS
Range/Material Code Adjustable Set Point Range Deadband *Over Range Pressure **Proof Pressure

" w.c.

mbar

" w.c.

mbar

psi

bar

psi

bar

Buna-N diaphragm & O-Ring with 1/2" NPT (female) aluminum pressure connection (other wetted materials available, see Order Info)

520

300 Vac to 0

-746.7 to 0

0.2 to 8

0.5 to 19.9

200

13.8

400

27.6

521

10 Vac to 10

-24.9 to 24.9

0.1 to 0.6

0.2 to 1.5

200

13.8

400

27.6

522

50 Vac to 50

-124.5 to 124.5

0.1 to 3

0.2 to 7.5

200

13.8

400

27.6

523

0.5 to 5.0

1.2 to 12.4

0.1 to 0.3

0.2 to 0.70

200

13.8

400

27.6

524

2.5 to 50

6.2 to 124.5

0.1 to 0.8

0.2 to 2.0

200

13.8

400

27.6

525

10 to 250

24.9 to 622.3

0.1 to 6

0.2 to 14.9

200

13.8

400

27.6

Welded 316L stainless steel diaphragm with 1/2" NPT (female) 316L pressure connection

530

300 Vac to 0

-746.7 to 0

0.2 to 15

0.5 to 37.3

50

3.4

100

6.9

531

10 Vac to 10

-24.9 to 24.9

0.1 to 0.6

0.2 to 1.5

50

3.4

100

6.9

532

50 Vac to 50

-124.5 to 124.5

0.1 to 3

0.2 to 7.5

50

3.4

100

6.9

533

0.5 to 5.0

1.2 to 12.4

0.1 to 0.3

0.2 to 0.70

50

3.4

100

6.9

534

2.5 to 50

6.2 to 124.5

0.1 to 0.8

0.2 to 2.0

50

3.4

100

6.9

535

10 to 250

24.9 to 622.3

0.1 to 10

0.2 to 24.9

50

3.4

100

6.9

 

psi

bar

psi

bar

psi

bar

psi

bar

Welded stainless steel diaphragm with 1/2" NPT (female) pressure connection, large 0.72" orifice for clean-out purposes

171

1 to 20

0.07 to 1.4

0.1 to 1.0

0.01 to 0.1

500

34.5

1000

68.9

172

2 to 50

0.14 to 3.4

0.1 to 1.5

0.01 to 0.1

500

34.5

1000

68.9

173

4 to 100

0.3 to 6.9

0.1 to 2.5

0.01 to 0.2

500

34.5

1000

68.9

174

8 to 200

0.6 to 13.8

0.1 to 3.5

0.01 to 0.2

500

34.5

1000

68.9

2" sanitary welded 316L stainless steel diaphragm and pressure connection. Mates with Tri-Clamp® fitting systems

560

0.5 to 15

0.03 to 1.0

0.1 to 1

0.01 to 0.1

200

13.8

300

20.7

561

1 to 25

0.07 to 1.7

0.1 to 1.5

0.01 to 0.1

200

13.8

300

20.7

562

2 to 50

0.14 to 3.4

0.1 to 2.5

0.01 to 0.2

200

13.8

300

20.7

563

4 to 100

0.03 to 6.9

0.1 to 4

0.01 to 0.3

200

13.8

300

20.7

564

8 to 200

0.6 to 13.8

0.1 to 5

0.01 to 0.3

200

13.8

300

20.7

1.5" sanitary welded 316L stainless steel diaphragm and pressure connection. Mates with Tri-Clamp fitting systems

565

5 to 30

0.3 to 2.1

1 to 5

0.1 to 0.3

1000

68.9

1500

103.4

566

10 to 100

0.7 to 6.9

1 to 12

0.1 to 0.8

1000

68.9

1500

103.4

567

15 to 300

1.0 to 20.7

3 to 22

0.2 to 1.5

1000

68.9

1500

103.4

316L stainless steel diaphragm (optional Hastelloy® C, Monel® or Tantalum); Viton® GLT O-Ring (optional Kalrez®, Silicone, Ethylene Propylene, or Aflas®); 316 stainless steel 1/2" NPT (female) pressure connection (optional Hastelloy® B or C, or Monel®), large 0.72" orifice for clean-out purposes. Models 188 & 189 have a 316L stainless steel 1/2" NPT (female) pressure connection

183 1 to 20 0.07 to 1.4 0.3 to 2.5 0.021 to 0.2 500 34.5 1000 68.9
184 2 to 50 0.14 to 3.4 0.3 to 3 0.021 to 0.2 500 34.5 1000 68.9

185

4 to 100

0.3 to 6.9

0.5 to 6

0.03 to 0.4

500

34.5

1000

68.9

186

8 to 200

0.6 to 13.8

1 to 11

0.07 to 0.8

500

34.5

1000

68.9

188

50 to 1000

3.45 to 68.9

25 to 125

1.7 to 8.6

2000

137.9

7000

482.6

189

250 to 3500

17.3 to 241.3

50 to 300

3.4 to 20.7

4000

275.8

7000

482.6

316L stainless steel diaphragm (optional Hastelloy®C, Monel® or Tantalum) Viton® GLT O-Ring (optional Kalrez®, Silicone, ethylene propylene or Aflas®), 316 stainless steel 1/2" NPT (female) pressure connection (optional Hastelloy® B, or C, or Monel®), 0.06" orifice. Models 488 & 489 have a 316L stainless steel 1/2" NPT pressure connection.

483 1 to 20 0.07 to 1.4 0.3 to 2.5 0.021 to 0.2 500 34.5 1000 68.9
484 2 to 50 0.14 to 3.4 0.3 to 3 0.021 to 0.2 500 34.5 1000 68.9

485

4 to 100

0.3 to 6.9

0.5 to 6

0.03 to 0.4

500

34.5

1000

68.9

486

8 to 200

0.6 to 13.8

1 to 11

0.07 to 0.8

500

34.5

1000

68.9

488

50 to 1000

3.4 to 68.9

25 to 125

1.7 to 8.6

2000

137.9

7000

482.6

489

250 to 3500

17.2 to 241.3

50 to 300

3.4 to 20.7

4000

275.8

7000

482.6

Welded 316L stainless steel bellows with 1/2" NPT (female) pressure connection

S126B

30"to 3"Hg Vac

-1 to 0

0.2 to 0.6" Hg

0.01 to 0.02

80"wc

0.2

5

0.3

S134B

30" Hg Vac to 20

-1 to 1.4

0.2 to 0.6" Hg

0.01 to 0.02

20

1.4

25

1.7

S137B

15 to 80"wc

0.04 to 0.2

2 to 6"wc

0.01 to 0.02

80"wc

0.2

5

0.3

S144B

0.5 to 20

0.04 to 1.4

0.1 to 0.3

0.01 to 0.02

20

1.4

25

1.7

S152B

1 to 50

0.07 to 3.4

0.1 to 0.5

0.01 to 0.03

50

3.4

75

5.2

S156B

2 to 100

0.14 to 6.9

0.2 to 0.6

0.01 to 0.04

100

6.9

125

8.6

S164B

4 to 200

0.28 to 13.8

0.2 to 1

0.01 to 0.01

200

13.8

200

13.8

*Over Range Pressure: The maximum pressure that may be applied continuously without causing damage and maintaining set point repeatability

** Proof Pressure: The maximum pressure to which a pressure sensor may be occasionally subjected, which causes no permanent damage. Unit may require calibration.

Range/Material Code

 

Adjustable Set Point Range Deadband *Over Range Pressure **Proof Pressure
Lower 75% range Top 25% Range
psi bar psi bar psi bar psi bar psi bar
Welded stainless steel diaphragm with 1/2" NPT (female) pressure connections, large0.072"orifice for clean-out purposes
190 5 to 30 0.3 to 2.1 1 to 3 0.07 to 0.2 6 max 0.4 1500 103.4 2500 172.4
191 10 to 100 0.7 to 6.9 1 to 8 0.07 to 0.6 15 max 1.0 1500 103.4 2500 172.4
192 15 to 300 1 to 20.7 3 to 18 0.2 to 1.2 25 max 1.7 1500 103.4 2500 172.4
193 20 to 500 1.4 to 34.5 4 to 30 0.3 to 2.1 45 max 3.1 1500 103.4 2500 172.4
194 80 to 1700 5.5 to 117.2 5 to 120 0.3 to 8.3 150 max 10.3 2000 138.9 2500 172.4
Welded 316 stainless steel diaphragm with 1/2" NPT (female) pressure connection, 0.06" orifice to dampen pulsations
490 5 to 30 0.3 to 2.1 1 to 3 0.07 to 0.2 6 max 0.4 1500 103.4 2500 172.4
491 10 to 100 0.7 to 6.9 1 to 8 0.07 to 0.6 15 max 1.0 1500 103.4 2500 172.4
492 15 to 300 1 to 20.7 3 to 18 0.2 to 1.2 25 max 1.7 1500 103.4 2500 172.4
493 20 to 500 1.4 to 34.5 4 to 30 0.3 to 2.1 45 max 3.1 1500 103.4 2500 172.4
494 80 to 1700 5.5 to 117.2 5 to 120 0.3 to 8.3 150 max 10.3 2000 138.9 2500 172.4
*Over Range Pressure: The maximum pressure that may be applied continuously without causing damage and maintaining set point repeatability
** Proof Pressure: The maximum pressure to which a pressure sensor may be occasionally subjected, which causes no permanent damage. Unit may require calibration.
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For assistance call 978-568-3400
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