2
98MANAL350 Rev.
E
1
0
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10/
14
PRODUCT OVERVIEW
All information contained in this document is representative of a standard Model 350. If the product you ordered has special
requirements or modifications, refer to the Laser 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.
BASIC OPERATION
The Model 350 has been pre-set at the factory for the required output and is referenced to absolute zero (full vacuum). 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. On sealed units, output will go positive with positive pressure applied to the pressure port. 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.
INSTALLATION DATA - VIATRAN MODEL 350
Note: The drawing below is for informational purposes only and is not to scale. All dimensions are
nominal, in inches and for reference purposes only.
Tri-Clover Fitting Size
“A” Dia.
Viatran Size Code
1 1/2”
2.00
HA
2”
2.53
HB
2 1/2”
3.06
HC
Cherry Burrell “I” Line
“A” Dia.
Viatran Size Code
1 1/2”
2.00
SB
2”
2.64
HL
2 1/2”
3.31
HM
Output:
4-20 mA
Sensor Construction:
Bonded Foil Strain Gage
Wetted Parts:
316SS Cladded or Non-Cladded
Electrical Mating Connection:
Acceptable 18AWG wire termination
connection 1/2” NPT (M)
