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N88-3M Basic Plus Magnetic Pit Gauge Centre Mount 3.5\" (89mm), 2 Magnetic Cartridges

N88-3M Basic Plus Magnetic Pit Gauge Centre Mount 3.5" (89mm), 2 Magnetic Cartridges

Description
Price: $325.00 to $460.00
Western Instruments Pit Gauges assure compliance with vessel, pipeline, tank and OCTG specifications for corrosion and erosion depth measurement.
Measuring Range: 0.0-0.5" (0.0 - 12.7 mm)
Resolution: 0.001" (0.01 mm)
Dial Diameter: 1.4" (35.5 mm)
Center-mount c/w Two(2) magnetic cartridges 3 1/4" Blade
Available with dial or digital indicators

Western Instruments Pit Gauges allow the Corrosion Inspector to conveniently measure Pit Depth or material loss in areas of Weight-Loss Corrosion. Various Blades for the Pit Gauges are available for different applications, including the Bridging Pit Gauge which permits Inspectors to Span or Cantilever over large areas of Weight-Loss Corrosion, to get a true measure of Pit Depth.


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Features
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Zeroing Dial Indicator

  • The vertical position of the Contact Point, needs to be Zeroed with respect to the Knife Edge of the Blade.
  • Zeroing can be accomplished in two ways; by adjusting the Height of the Dial Indicator in the Blade; or by Rotating the outer Bezel Scale while pressing on the Plunger onto a flat surface.

Scale Zeroing
  • To quickly check the Zero Point of the Dial indicator, place the Blade on a representative smooth surface.
  • Gently press the Plunger, until the contact point touches the surface.
  • While the contact point is on the surface, loosen the Bezel Lock, and rotate the Bezel Scale until it reads '0' with respect to the pointer.

Click to enlarge image

Height Zeroing
  • Loosen the Fastener(s) holding the Dial Indicator in place.
  • Hold the Blade firmly on a Flat Surface, and gently press the body of the Dial Indicator down until the contact point touches the flat surface.
  • Carefully re-tighten the Clamp Fastener(s) or the Set Screw.
  • Any fine zeroing can be done by rotating Bezel Scale on the Indicator.
  • Height Zeroing should be done, whenever the unit is put into to use.

Click to enlarge image

Zeroing a Digital Indicator
  • Digital Indicators can be Height Zeroed or Positioned in the same way as a Mechanical Dial Indicator.
  • To Zero the Digital Indicator simply press the Zero Button when the Contact Point is on a reference point. If the Digital Indicator is Height Zeroed, press Zero when the Plunger is fully retracted.
  • To select Metric or Imperial Measurement, simply press the mm/in Button.Whennot in use, press the On/Off Button to turn the Indicator off.

Click to enlarge image

Indicator Positioning
  • The position (or rotation) of the Dial indicator can be changed by simply loosening the Clamp Fasteners or Set Screw, and rotate the Dial Indicator about the Blade.
  • After the Dial Indicator is rotated, the unit should be Dial Zeroed.

Click to enlarge image



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Specifications
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Dial and Digital Indicators
Metric Dial Indicator Range:
Resolution:
Dial Diam.
0.0-12.7 mm
0.01 mm
35.5 mm
Imperial Dial Indicator Range:
Resolution:
Dial Diam.
0.0-0.5"
0.001"
1.4"
Digital Indicator Range:
Dial Diam.
0.0-0.5"
0.0-12.7 mm
56 mm, 2.2"
Measuring Corrosion (Depth)
1-Standard Tip 0.040" diam. #1 Contact Point-Standard N88-S
2-Conical Tip 0.010" diam. #2 Contact Point-Conical N88-C
3-Needle Tip 0.005" diam. #3 Contact Point-Needle N88-N

* Western offers a variety of Contact Points, which are all 0.625" (16mm) long. Any ADG Contact point can be used with our special dial indicators, but a different length may affect Height Zeroing, or the vertical position of the Dial Indicator. Contact Points are easily replaced, by extending the Contact Point , and turning it counter clockwise.


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Complete Kit
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Photo Gallery
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Related Products
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N88L-1
Tri-Gauge Pit Gauge

  • Lever Type Pit Gauge for Evaluation of Corrosion
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N88-2
Basic Pit Gauge Center Mount 2.5" (64 mm) Blade

  • N88-2 Basic Pit Gauge Center Mount 2.5" (64 mm) Blade
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N88-3
Basic Plus Pit Gauge Centre Mount 3.5" (89 mm) Blade

  • Measuring Ranges x Resolution: 14mm x 0.01mm, 0.550 x 0.001 inch
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N88-4
Pocket Pit Gauge

  • Dual Edge Blade (reversible). 1.5" (38mm) long and spot base
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N88-5
Reaching Pit Gauge
  • 4.75" (121mm) Blade. End Mount Dial Indicator with Nose Cutout.
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N88-5M
Reaching Magnetic Pit Gauge

  • 4.75" (121mm) Blade c/w Two(2) magnet cartridges.
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N88-6
Reaching Plus

  • 6" (152mm) Blade. End Mount Dial Indicator with Nose Cutout.
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N88-6M
Reaching Plus Magnetic Pit Gauge

  • 6" (152mm) Blade c/w Two(2) magnet cartridges.
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N88-12
Reference Pit Gauge
  • 5.5” (140mm) long, 0.75” (19mm) wide with inverted V Edge, 2 magnet cartridges. Similar and interchangeable with Bridging Pit Gauge Main Blade.
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NOTE: All Blades are 0.500” (13mm) Wide with a Knife Edge, except the Reference Gauge


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Downloads
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N88-3M Basic Plus Magnetic Pit Gauge Centre Mount 3.5" (89mm), 2 Magnetic Cartridges - Instruction Manual


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