background image

 

SD62 

 

 

Figure 1  Installation Dimensions with Rounded Rotameter 

 

 

3

Summary of Contents for 62 Series

Page 1: ...s diaphragm controls the action of a valve plunger to automatically admit supply air to the needle valve at the required rate A self contained automatic bleed discharges excess supply air to the atmosphere when necessary The constant differential relay is made of aluminum brass stainless steel Neoprene and Buna N The rotameter is constructed of aluminum stainless steel borosilicate glass Buna N O ...

Page 2: ...e kept as short as possible and should be at least 1 4 pipe or larger For example At a flow rate of 0 9 SCFH the pressure drop in a 20 foot length of 1 4 pipe will not exceed 0 20 H20 head but approximately ten times this drop would be obtained with 1 4 O D tubing Pressure drop between the relay and the junction of the receiving instrument is ordinarily of no consequence so that this line may be m...

Page 3: ...SD62 Figure 1 Installation Dimensions with Rounded Rotameter 3 ...

Page 4: ...e instrument should be no larger than 3 microns Dew Point The dew point at line pressure should be at least 10 C 18 F below the minimum temperature to which any part of the instrument air system is exposed at any season of the year Under no circumstances should the dew point at line pressure exceed 2 C 35 6 F Oil Content Maximum total oil or hydrocarbon content exclusive of non condensable should ...

Page 5: ...nated This permits flows of less than 0 9 SCFH It is recommended that a flow indicator be used in the downstream line since it is possible to shut this unit off completely MAINTENANCE The use of a Constant Differential Relay greatly reduces the maintenance ordinarily required with the conventional purging or bubbling system The rate of flow of the purging gas can be expected to remain constant ove...

Page 6: ...elect the product line e g Control Solutions Warranty The sales contract contains the entire obligation of Siemens The warranty contained in the contract between the parties is the sole warranty of Siemens Any statements continued herein do not create new warranties or modify the existing warranty All product designations may be trademarks or product names of Siemens Industry Inc or other supplier...

Page 7: ...ly 1 12 1145 19 Mounting Bracket 1 13 7135 19 Diaphragm 1 14 8912 10 Retaining Screw Model 62VN only 1 15 2155 225 Filter Screen 2 A6X30060272 Rotameter Rounded Not shown A Models only Supersedes the following part 1 12431 11 Rotameter Rectangular Not shown A Models only Discontinued part A 1 3345 1 4 20 x 7 8 Lg Fil HD Screw 3 B 1 3410 1 4 20 x 1 Lg Fil Hd Screw 3 C 1 7303 1 4 Med Lockwasher 6 Re...

Reviews: