Instrument Assembly Quick Guide

Transcription

1 Instrument ssembly Quick Guide assembly_qg_br.0, 07/8 08 shcroft Inc. assembly_qg_br.0, Rev., 06/8

2 ssembly Resource ssembly Information LL SHROFT SSEMLIES RE DESIGNED Y OUR ENGINEERS TO MXIMIZE DURILITY ND MINIMIZE THE POTENTIL FOR LEKS ND DMGE TO INSTRUMENTS. ll fittings and adapters are made with high pressure 36 stainless steel fittings. For assemblies involving diaphragm seals or s, we strive to minimize fill volume to reduce temperature error. y using the compact tee or cross fittings we avoid goalpost configurations and the lengthy pipe sections prone to breakage. Ordering Guidelines Order all products on separate line items. lways include the assembly code option in all part numbers involved in an assembly. For assemblies that include a diaphragm seal, always include the system fill code (e.g. G, K) on all products containing the fill. Many variations are specific to the connection codes involved. Note any connection code requirements when creating a part number. ontact shcroft for assistance with assemblies that do not fall under any of the variations contained in this guide. ssembly coding may affect agency approvals for switches and transducers. ontact shcroft for assistance. oding example for XL5 assembly filled with 50 cst silicone (XK) omponent oding Example Gauge 4579SSL04LXKL500# L5 Switch Snubber 44XKL500# 50SDXKL5 Diaphragm Seal 5000SS04TXKL5 08 shcroft Inc. assembly_qg_br.0, Rev., 06/8 07/8 info@

3 ssembly Variations DU: INSTRUMENT WELDED TO DIPHRGM SEL XDU is the code for welding an instrument to the diaphragm seal. Welded surfaces must be of like materials. Instruments attached directly to diaphragm seals can be welded, and assemblies with capillaries or siphons can be welded at each connection. Fittings (e.g. tee, nipples) cannot be welded, nor can snubbers, dampeners, or PLVs. Q7: TMPER EVIDENT SELNT XQ7 instructs the assembler to apply a brightlycolored, tamper-evident, hardening sealant at each threaded joint on an assembly. Q8: ELOW FOR VERTIL PIPING XQ8 codes for an elbow installed (typically on an, though available with diaphragm seals) between the instrument and the isolator. XQ8 is only available on assemblies with ¼ NPT connections. 6G: MISELLNEOUS ONFIGURTIONS For assemblies not included in this guide, contact shcroft for assistance setting up a custom variation to suit your needs. In most cases, X6G can be used in conjunction with a custom-configured engineering drawing approved by the customer prior to ordering. K: INSTRUMENT, PILLRY, PLV, SNUER & DIPHRGM SEL XK applies to assemblies consisting of an instrument (gauge, switch, transducer) attached to a capillary, followed by a PLV, snubber, and finally a diaphragm seal. ll connections must be ½ NPT. The snubber attaches to the diaphragm seal using a ½ NPT nipple. For more detailed information about our assemblies, see our full assembly brochure. 08 shcroft Inc. assembly_qg_br.0, Rev., 06/8 07/8 info@

4 Quick Guide To use the below table, select the number of instruments and accessories required in your assembly; and whether a seal is required. onfirm that the accessories are available in the desired configuration, and note any connection size requirements. See the assembly illustrations on pages 4-7 for more detailed information for each assembly. Instruments (Gauge, Switch, or Transducer) onnections Diaphragm Seal Number of ccessories Snubber or PLV Siphon Valve apillary Notes J9 ¼ NPT K ½ NPT 3 K9 MicroTube siphon only L ¼ NPT L3 ¼ NPT L4 Mix L5 Mix L6 ½ NPT E8 F4 FL H3 ¼ NPT H5 ½ NPT H6 3 ½ NPT H7 ¼ NPT Snubber above diaphragm seal, valve below Valve below diaphragm seal Valve between diaphragm seal and instrument oth instruments with ¼ NPT Male connections oth instruments with ½ NPT Male connections ll instruments with ½ NPT Male connections Male / Female ¼ NPT instrument connections H8 3 ¼ NPT H9 Mix ¼ NPT Male gauge, ½ NPT Female switch/diaphragm seal Q ½ NPT Q4 3 ½ NPT 08 shcroft Inc. assembly_qg_br.0, Rev., 06/8 07/8 info@

5 Quick Guide Instruments (Gauge, Switch, or Transducer) onnections 5G E7 Diaphragm Seal Number of ccessories Snubber or PLV Siphon ½ NPT E9 F F F F3 F6 F7 F8 F9 Valve apillary Notes Direct connection only Siphon below diaphragm seal apillary between instrument and diaphragm seal 3 instruments attached to a diaphragm seal Instrument Instrument ccessory Seal D H6 ½ NPT Male x ½ NPT Male ½ NPT Female diaphragm seal or ring H8 ¼ NPT Male x ¼ NPT Female ¼ NPT Female diaphragm seal or ring Q4 ½ NPT Male x ½ NPT Male Snubber or ½ NPT Female diaphragm seal or ring D Q4 SHOWN info@ 08 shcroft Inc. assembly_qg_br.0, Rev., 06/8 07/

6 ssemblies ssemblies consisting of instruments Instrument Instrument ccessory Isolator D E7 ½ NPT Male ½ NPT Male () ½ NPT Snubber or L ½ NPT Male ¼ NPT Female ¼ NPT PLV L3 ¼ NPT Male ¼ NPT Female ¼ NPT Snubber or L4 ½ NPT Male ¼ NPT Female ¼ NPT diaphragm ¼ NPT diaphragm ½ NPT diaphragm L5 ½ NPT Male ¼ NPT Female ½ NPT Snubber or ½ NPT diaphragm H3 ¼ NPT Male ¼ NPT Male H5 ½ NPT Male ½ NPT Male H7 ¼ NPT Male ¼ NPT Female H9 ½ NPT Male ½ NPT Female () ½ NPT diaphragm ½ or ¼ NPT diaphragm seal or ¼ NPT diaphragm ½ NPT diaphragm D L5 SHOWN. Instrument installed in the 9 o'clock position ssemblies for instrument without a diaphragm seal Instrument ccessory ccessory 5G ½ or ¼ NPT ½ or ¼ NPT E9 F Snubber,, or PLV with Male process connection Needle valve with Female inlet and outlet Siphon with Female instrument connection Siphon with Male instrument connection E9 SHOWN F Siphon with Female instrument connection Note: ll components must mate without the use of adapter fittings: all connections must be ½ or ¼ NPT for a given assembly. 08 shcroft Inc. assembly_qg_br.0, Rev., 06/8 07/8 info@

7 ssemblies ssemblies with instrument, accessory(ies), and isolators Instrument ccessory ccessory Diaphragm Seal D F Snubber or apillary FL Needle valve F6 Snubber or F7 PLV F8 ½ or ¼ NPT apillary F9 PLV apillary K9 MicroTube siphon L6 ½ NPT Male ½ NPT Snubber or ½ NPT Needle valve D F SHOWN s with accessories attached at process connection Instrument ccessory Diaphragm Seal ccessory D F3 Siphon or apillary J9 ¼ NPT Male with ¼ NPT Female P Snubber or and valve E8 Snubber or Valve F4 Diaphragm Seal Valve Q Diaphragm Seal with XD or ½ NPT model 8 ring x ½ NPT Valves D F4 SHOWN info@ 08 shcroft Inc. assembly_qg_br.0, Rev., 06/8 07/

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