Viatran 246 Installation and user guide

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98MANALX46 Rev. C3/24/17
INSTALLATION DATA MANUAL
MODELS 246 & 346
PRESSURE TRANSMITTER
199 Fire Tower Drive
Tonawanda, NY 14150
Int’l: 1-716-629-3800
Toll Free: 1-800-688-0030
Fax: [phone]
www.viatran.com
[e-mail]

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98MANALX46 Rev. C3/24/17
PRODUCT OVERVIEW
NOTE: All information contained in this document is representative of a standard Model 246/346. If the
product you ordered has special requirements or modifications, refer to the permanently marked
information on the product and your purchase order for possible alteration to the product's configuration.
Failure to verify product configuration before installation may cause permanent product damage and in
most cases, void the manufacturer's product warranty. If you are unsure or have questions about your
product, please contact our Application Engineers for assistance.
Remove and retain all instruction manuals and performance certificates that are shipped with the product.
These documents provide important information on the product's calibration, operation, safety
precautions, recommended maintenance, re-calibration requirements, repair service instructions and
warranty information. These documents are updated from time to time as changes to the product occur
and should be reviewed at receipt so that proper and safe installation can occur.

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98MANALX46 Rev. C3/24/17
INSTALLATION REQUIREMENTS & CAUTIONS
Note: This is only a partial list. Please refer to the attached data sheet for requirements by individual
model.
1. All electrical & pressure connections should be compatible with the model specifications as outlined in
the product installation data sheet.
2. Installation should occur only after electrical (input power) and line pressure is verified as being off
and at zero.
3. The product's internal electrical circuitry is isolated from case ground. It is not recommended that the
case or ground of the unit be connected to the input, output or calibrate pins of the product or wiring
system. Ground loops and line noise will affect the product's performance and will in most cases
cause internal electrical failure.
4. All products should be protected from direct or continued exposure to fluids at the electrical
connection. It is recommended that for products installed in areas where the potential for
contamination at the electrical connection is possible a "boot" or other protective measure be taken to
eliminate possible deterioration of the product's electrical connection and corrosion that will impede
product performance.
5. On some lower range models a breather opening, with breather plug, is used to allow for proper
product function. At no time should any mist, vapor or fluid be permitted to enter this breather as total
unit failure will occur. (A protective boot may be required.)
6. At no time should an object be inserted into the pressure port or pressed against the sensing area to
deflect the sensor (to test or simulate pressure), as on some models permanent damage to the
sensing diaphragm may occur.
7. NEVER - Strike a presumed failed transmitter. If the transmitter is in working order, the shock could
cause additional failure.
8. NEVER - Remove a transmitter from an instrumentation loop with the power on. Protection circuitry
designed to absorb small power surges could become shorted and cause transmitter failure due to
"arking".
9. NEVER - Ground a transmitter to AC Return (Black). Instant "fatal" failure occurs.
10. NEVER - Apply input power to the case ground (Green wire). Reduced life span of protection
components will occur.
BASIC OPERATION
The Models 246 and 346 have been pre-set at the factory for the required output. Once factory set, the
product should perform as indicated by the performance certificate and product labeling. In all cases the
zero and span cannot be externally adjusted, hence any deviation from the factory settings would indicate
damage to the sensor, electronics (model dependent), or both. For absolutes, the pressure port must
have a full vacuum applied to reach the absolute zero point. After the full vacuum is applied, the unit will
begin to read positive pressure changes as less and less of a vacuum is evident at the pressure port.
ACCESSORIES - OPTIONAL EQUIPMENT
Mounting Bracket
004080.012
Mating Electrical Connector
10MSPT1106
Mating Electrical Cable Assembly
230002.002
Mating Electrical Cable Assembly (Improved Shielding)
230043.012
Digital Meter
Consult Factory

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98MANALX46 Rev. C3/24/17
MAINTENANCE AND REPAIR
All Viatran transmitters have been designed to function free from routine or scheduled maintenance.
Simple cleaning of the electrical connector, pressure port threads and pressure cavity on an as needed
basis will provide many years of satisfactory performance. Protecting the product from continued
exposure to moisture or fluids at the electrical connection, breather area (model dependent) will eliminate
premature internal failure of the product. Generally any time the product is removed from service the
connector and pressure port threads should be cleaned and the pressure cavity flushed with a 316SS
and/or O-Ring (material model/option dependent) compatible cleaner to prevent media buildup. During
the cleaning process only a soft, lint-free cloth is recommended. Never use a coarse of stiff bristle brush
to clean media from the diaphragm surface.
It is suggested that the calibration be verified on a usage dependent schedule. If the product is in
continuous service 7 days a week, then calibration verification may be necessary every 6 to 8 months. If
the product is in a lab test environment a more lenient verification schedule would be appropriate. In all
instances the performance of the product will depend on the individual application or process in which it is
installed. More continued usage would require a shorter period between calibration verification and
product maintenance.
If a product is perceived to be exhibiting problems, it can be returned to Viatran for analysis and/or repair.
It is suggested that only Viatran personnel attempt repair of the product. Any damage resulting from
customer disassembly would result in a loss of coverage under the warranty policy. All Viatran products
are able to be repaired at minimal cost if simple cleaning and precautions are taken in the handling and
application of the product. Older products returned for repair are updated to current specifications unless
the repair cost would outweigh the cost of a new replacement model. Products returned for repair should
include information on the person to contact for repair quote approval, the individual to contact if Viatran's
technical staff requires additional information during analysis, and a brief description of the problem
associated with the product's failure.
WARRANTY
Viatran Corporation warrants that its products shall be free from defective workmanship and/or material
for a period of twelve (12) months from the date of shipment, provided that Viatran's obligation hereunder
shall be limited to correcting any defective workmanship and/or replacing any defective material f.o.b.
factory. No allowance will be made for any expense incurred for correcting any defective workmanship
and/or material without written consent by Viatran. This warranty is in lieu of all other warranties
expressed or implied.
REPAIR INSTRUCTIONS
Viatran's Transmitters are designed to be easily repaired and recalibrated if necessary. If a failure
occurs, the transmitter should be returned to the factory for inspection and testing. Please contact the
Customer Support Department at 1-800-688-0030, for a return tracking number and/or a repair cost
estimate. A nominal inspection fee is charged on all units returned to the factory which are not
subsequently repaired.
199 Fire Tower Drive
Tonawanda, NY 14150
Int’l: 1-716-629-3800
Toll Free: 1-800-688-0030
Fax: [phone]
www.viatran.com
[e-mail]