LVIT Linear Position Sensor Subsea SS-7 Series

For Use In
Subsea Valves and Cylinders
Oil and Gas Exploration
PBOF Environments
SS-7 Series
LVIT Linear Position Sensor for Subsea
LVIT for Subsea High Pressure & PBOF Environments - NO MAGNET REQUIRED!

The SS-7 series LVIT (Linear Variable Inductance Transducer) position sensors from Alliance Sensors Group have been designed to give cylinder position feedback in subsea environments with depths up to 12,000 ft or in a PBOF (pressure balanced oil filled) chamber; for oil and gas exploration, blow out preventers, ROVs, and relief valves.

The SS-7 requires no magnet and is based on a proprietary contactless inductive sensing technology that employs a 7 mm diameter probe with good stroke-to-length ratio to save space. The 1-inch diameter, 316 stainless steel housing comes with a subsea connector. They are offered in ranges from 1 to 36 inches (25 to 900 mm) full scale with a wide variety of analog I/Os. SS-7 sensors are also offered with ASG’s proprietary SenSet™ feature whereby a sensor’s analog output can be easily adjusted in the field after installation to match the range of motion of the cylinder rod.

Features
  • - LVIT Technology™ (Linear Variable Inductance Transducer)
  • - Operational to 12,000 ft depth or 5000 psig (350 bar)
  • - Senses Cylinder Rod...No Magnet Required
  • - Contactless...No Wear from Cycling or Dithering
  • - Proprietary SenSet™ for Field Adjustable Range Scaling
Specifications
Analog I/Os: 0 – 5 V or 0.5 – 4.5 V output with 8 – 30 V input, 35 mA max. 0 – 10 V output with 12 – 30 V input, 35 mA max. 4 – 20 mA (3-wire) output with 18 – 30 V input, 60 mA max. (75 C max.)
Measuring Ranges: 25 mm to 900 mm (1 to 36 inches) Full Scale (nominal)
Linearity Error: ±0.15% of Full Scale Output (FSO) typical, ± 0.25% of FSO max.
Resolution: 0.025% of FSO
Update Rate: 300 Hz nominal
Operating Temperature: -20 to 85 C (-40 C to 105 C Extended Range)
Temperature Coefficient: ≤±0.015% of FS/deg C
Operating Pressure: 5000 psig max. (350 bar)
Vibration: 5-20 Hz 0.5 inch p-p; 20-2000 Hz 4.2 g p-p
Shock: 1000 g, 11 msec
Ordering Info Table


Series

Output
Type

Probe
Dia. (mm)

Range
(mm)

Body Diameter


Termination


Output

Housing
Material

Bore
Size (mm)

Bore
Material

SS

X-

X-

XXX-

XX-

XX-

XX-

X

XX-

XX

 

E -Voltage

7 -7

025 - 900

08 - 3/4-16 UNF

06 - Macartney  

MCBH4M

03 - 0 to 3 V DC

S - 316 SS

08 - 8 mm

AL - Alum

 

I - Current

 

 

18 - M18 x 1.5

 

04 - 3 to 0 V DC

 

95 - 9.5 mm

AS - Alloy Steel

 

 

 

 

 

 

05 - 0.5 to 4.5 V DC

 

11 - 11 mm

CS - Carbon Steel

 

 

 

 

 

 

06 - 4.5 to 0.5 V DC

 

 

SS - Stainless Steel

 

 

 

 

 

 

10 -  0 to 10.0 V DC

 

 

 

 

 

 

 

 

 

11 - 10.0 to 0  V DC

 

 

 

 

 

 

 

 

 

20 - 4 to 20 mA

 

 

 

 

 

 

 

 

 

21 - 20 to 4 mA

 

 

 

 

 

 

 

 

 

50 - 0 to 5 V DC

 

 

 

 

 

 

 

 

 

51 - 5 to 0 V DC

 

 

 

 

Configuration Table

4-Pin Connectors

I/O Function

Pin

+ Power Input

1

Ground

2

Analog Output

3

SenSet

4

 

Nominal Range

Dim. “A” In. [mm]

25 mm

1.0 [25.4]

50 mm

2.0 [50.8]

75 mm

3.0 [76.2]

100 mm

4.0 [101.6]

125 mm

5.0 [127.0]

150 mm

6.0 [152.4]

175 mm

7.0 [177.8]

200 mm

8.0 [203.2]

225 mm

9.0 [228.6]

250 mm

10.0 [254.0]

300 mm

12.0 [304.8]

350 mm

14.0 [355.6]

400 mm

16.0 [406.4]

450 mm

18.0 [457.2]

500 mm

20.0 [508.0]

600 mm

24.0 [609.6]

700 mm

28.0 [711.2]

750 mm

30.0 [762.0]

800 mm

32.0 [812.8]

900 mm

36.0 [914.4]

 

If you are looking for CAD drawings of our SS-7 sensor, simply call us at 856-727-0250 or use the online contact us form by clicking here.