Tamron MST2000 Mounting and Process Connections, Continuous Purge Option, Three Valve Manifold

MOUNTING AND PROCESS CONNECTIONS OPERATION MANUAL

1. MOUNTING AND PROCESS CONNECTIONS

The MST2000 can be mounted in any direction. There may be a minor effect on Zero that can be corrected by the setup parameters.

1.1 MST2100: NEMA 1 Enclosure

A.Review the dimensional drawing on page 5.

B.Pro cess con nec tions are via 1/8" NPT fe male ports lo cated on the bot tom of the hous ing. The high pressure port is la beled “HIGH”, the Low pres sure port is la beled “LOW” on the mount ing plate.

1.2 MST2400: NEMA 4X Enclosure

A.Review the dimensional drawing on page 5.

B.With out a con tin u ous purge op tion, pro cess air should be non-corrosive and dry. If a con tinuous purge option is installed please review section 2 on the continuous purge. The continuous purge must be balanced.

C.Pro cess con nec tions are via 1/4" NPT fe male ports lo cated on the bot tom of the en clo sure. The high pressure port is la beled “HIGH”, the Low pres sure port is la beled “LOW”.

1.3Three Valve Manifold

A.It is recommended that a three valve man i fold be in stalled in the pro cess, unless a continuous purge is installed . A three valve manifold is available from the factory. It is installed in the process lines to isolate the pro cess sig nal dur ing in stal la tion and/or re moval of the MST2000 thus preventing possible trans ducer over-pressurization and to zero trans mit ter.

þNotes:

&Be fore con nec tions are made blow out pro cess lines throughly.

&It is rec om mended that pipe thread tapes not be used on pneu matic pip ing.

&Soap test all joints and fit tings for leaks.

&Pro cess lines should be the same di am e ter and ap prox i mately the same length.

þNote: MST2000 DP sen- sor max i mum op er at ing static pres sure is 25 PSID.

2. CONTINUOUS PURGE OPTION

The MST2400 can be or dered with a Con tin u ous Purge Op tion. This op tion sup plies a con tin u ous pneumatic purge to a Thermo Brandt pitot flow sen sor to keep the sens ing ports free from plug- ging dur ing op er a tion. There are Purge Bal ance adjustments located on the front panel which pro vide for the ze ro ing of pro cess air re sis tance. If the Continuous Purge Option has been or - dered, please read the following setup instruc- tions. TheContinuousPurgeOptionmustbe balanced once the process is connected to the MST2400.

A 1/4" NPT fe male air sup ply port is pro vided on the bot tom of the en clo sure for the Purge.

An internalfilter is sup plied with the unit, but air supply should also be filtered and regulated.

þPROCESS LINE LENGTH & SIZE

& When a con tin u ous purge op tion is used, the pro cess lines (Hi and Low lines) must be the same di am e ter (pref er a bly 3/8" or larger) and the length of each line should be the same within +/- 5%.

þIMPORTANT:

&The Con tin u ous purge op tion air sup ply should be only clean, in stru ment qual ity air and should be greater than 20 psi (1.4 bar) and not ex ceed 100 psi (6.9 bar). A pre-filter should be in stalled in the sup ply line if the air qual ity is sus pect. A 5 mi cron fil ter and a 0.3 mi cron co ales cent fil ter are rec om mended. Fail ure to pro vide clean, in stru ment qual ity air through the Con tin u ous Purge can cause the MST2000 to give er ratic read ings. Fail ures at trib uted to a con tam i nated air sup ply are not cov ered un der the war ranty.

Page 8 MST2000 Multivariable SMARTFLOW ® Transmitter Brandt Instruments, Inc.