Detailed below are the Series 300 Pressure and Differential Pressure (DP) process options available.

Series 300 pressure switches may be used for monitoring the pressure of inert processes such as air or nitrogen, or aggressive processes such as ammonia or nitric acid. Both the Diaphragm and the Pressure (or DP) Chamber(s) of the switch are in contact with the process so clearly the materials of both must be chosen to be compatible with the process.

If assistance is required in determining the suitability of a diaphragm or chamber material with your process please contact HNL Technical Sales. Additional non-standard options are also available HNL Technical Sales can advise you of these.

Coding of Series 300 Process Options

3

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1

5

0

3

Range Code:

3

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Click here to go to the

RANGE SELECTION TABLE

Enclosure Code:

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Click HERE to go to ELECTRICAL options HAZARDOUS options

Output Switch Code:

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Process Options

Diaphragm Material:

1

- Nitrile

2

- PTFE

7

- Hastelloy C

Chamber Material:

1

- Anodised Aluminium

5

- 316 Stainless Steel

7

- Hastelloy C

Connection:

0

1

- 1/4" BSP.T (Rc 1/4)

0

3

- 1/4" NPT INT.

0

6

- 1/2" NPT INT. via adaptor

0

8

- 1/2" NPT male - via adaptor