6
Section 1
Model 351/352/353 Liquid Level Systems
Specifications
Specifications for Barton sealed sensor systems are presented in Tables 1.1
and 1.2.
CAUTION:
Never operate the system at pressures exceeding the safe working
pressure of the sensor flange or attached instrument, whichever is
lower. Periodic testing at pressures up to 150% of the safe working
pressure is permitted, provided the pressure is applied equally and
simultaneously to the entire system.
Table 1.1—Sensor Specifications
Specification
Model S048
Model 351
Model 353
Housing Material
316 SST
316 SST
316 SST
Safe Working Pressure
N/A
500 or 3000 psi
(3.5 or 20.7 MPa)
3000 psi
(20.7 MPa)
Bellows Material
316L SST
316L SST
316L SST
Housing Seals
N/A
O-ring & Backup
O-ring
O-ring, Backup
O-ring, and Flat
Nickel Gasket
Bellows Volume
Nominal
3.5 in.³
(57.4 cc)
3.5 in.³
(57.4 cc)
10 in.³
(165 cc)
Thermal Expansion
N/A
N/A
17.5 in.³
(288 cc)
Bellows Seals
O-rings
O-rings
O-rings
Table 1.2—Capillary Specifications
Specification
1/4-in. OD
3/16-in. OD
Material
316 SST
304L SST
Outside Diameter
¼ in. (6.4 mm)
3/16 in. (4.8 mm)
Wall Thickness
0.060 in. (1.5 mm)
0.049 in. (1.2 mm)
Capillary Armor Material
302 SST
316 SST
Capillary Fill Material
Silicone Oil, Water, Ethylene
Glycol & Water or Mineral Oil
Silicone Oil, Water, Ethylene
Glycol & Water or Mineral Oil
Weight (with armor)
0.25 lb/ft (350 g/m)
0.25 lb/ft (350 g/m)
Bend Radius (minimum)
2 in. (50 mm)
2 in. (50 mm)
