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OFFICINE OROBICHE   S.p.A.              

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INSTRUCTION MANUAL FOR FLOW SWITCHES 

 PL SERIES 

 

 

24010 Ponteranica (Bergamo) ITALY - via Serena, 10 - Tel. 0039/035/4530211 - Fax 0039/035/570546 - www.officineorobiche.it-e-mail:info@officineorobiche.it

 

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JULY ’14 

Information subject to change without prior notice 

IST/158-I 

1.INSTRUMENT DESCRIPTION 

Flow switches PL series are designed to be mounted in an upright position along horizontal pipes. 
These models are equipped with a tripping device, which can be equipped with single (SPDT) or double (DPDT) exchange 
contacts for high or low flow rate control and/or alarms. 

 

2. MODEL IDENTIFICATION 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 

11 12 13 14 15 16 17 18 19 20

PL

.

.

.

.

.

.

.

PNA

Aluminium

xx

Special
version

Finning

R3

Ø

R1

R4

Body material

SPDT

Ø

2

Contact  type

Pneumatic

Water-proof

HG Bulb

A

I

J

Internal material/Paddle

VD

AISI 316

2

M6

Water-proof

Golde- Contacts

Base

Current

Ermet.Sealed

with inert gas

Model

Water-proof

M4

EP

WP

Ex-d

Case

M14

316

Direct

M2

M3

Acc

304

Contact

DPDT

Summary of Contents for PL Series

Page 1: ...right position along horizontal pipes These models are equipped with a tripping device which can be equipped with single SPDT or double DPDT exchange contacts for high or low flow rate control and or...

Page 2: ...stream and 3D downstream The flow switch body has an arrow indicating the direction taken by the flow comply with such indication at the assembling stage Remove the adhesive tape that locks the paddle...

Page 3: ...replace any components without having first read the relevant instructions carefully If in doubt contact our Customer Services NEVER lubrificate instrument components If being used with high temperat...

Page 4: ...s to the terminal board as per point b 7 6 SETTING THE OPERATION POINT The switching unit is factoryt set to the minimum operation value To set the operation point to the desired flow rate value take...

Page 5: ...biche it JULY 14 Information subject to change without prior notice IST 158 I 9 DRAWINGS OF CASE WITH DIMENSIONS CODE LIQUID TEMPERATURE ELECTRICAL CONNECTIONS A 10 135 EP WP R3 11 80 1 2 NPT 1 2 NPT...

Page 6: ...e mail info officineorobiche it JULY 14 Information subject to change without prior notice IST 158 I WP CASE WATER PROOF IP 66 10 RECOMMENDED SPARE PARTS When ordering spare parts always indicate the...

Page 7: ...the improper use of the instrument Officine Orobiche may not be held liable for any improper use of its products where these are used for ends other than those indicated in the specifications forming...

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