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924B Magnetostrictive Probe

All stainless-steel construction, highly accurate, easy installation and trouble-free performance for inventory management and in-tank leak detection.

The Model 924B Magnetostrictive Probe features standard stainless-steel construction, making it ideally suited for use with gasoline, diesel, ethanol and biodiesel. The 924B probe is certified to meet or exceed the U.S. Environmental Protection Agency’s performance standards for 0.1 gph (0.38 L/hr) volumetric tank tightness testing and 0.2 gph (0.76 L/hr) monthly product-level monitoring.

Features & Benefits
  • Accurate - Five-point temperature sensing element provides exact temperature compensation for product volume contraction and expansion, allowing for accurate inventory management and in-tank leak detection
  • Easy-to-Use - Automatically transmits probe profile to SiteSentinel® iSite™ on start-up, eliminating programming errors
  • Installation - Adjustable probe head centering disks provide a tight fit inside risers with diameters ranging from 2" (5.1 cm) to 4" (10.2 cm)
  • Compliance - Supports programmable ALD (Automatic Leak Detection) to perform daily, weekly, monthly, and annually required leak tests for 24-hour continuous monthly leak tests (for SiteSentinel® iSite™ only)
  • All stainless steel construction
  • Welded construction – eliminates potential leak points
  • Level 1 probe - one probe for all applications
  • Easy Installation - Fits in a 2-inch to 4-inch (5.1 cm to 10.2 cm) riser
  • Can be multi-dropped – up to four (4) probes connected on a single I.S. channel (SiteSentinel® iSite™/Integra 100™ only)
  • Optional Density Float - provides a measure of all changes in product density within the specified API density range
Technical Information

924B Probe Specifications

  • Type: Magnetostrictive/Float
  • Material: Stainless-Steel Body, Nickel-Coated Brass Cap
  • Location: Hazardous, Class 1, Division 1, Group D
  • Temperature: 5 RTDs
  • Temperature Range:-40º F to 158º F (-40º C to +70º C) At Pi: 1W
  • Data Cable: 1,000 feet (305 m) Belden 88760 500 feet (152 m) maximum Belden 88761

Magnetostrictive Probe Data

  • Measures product level changes to a resolution of 0.0005" (0.0127 mm)
  • Measures product temperature changes to a resolution of 0.001º F (0.1º C)
  • Measures water level changes to a resolution of 0.01" (0.254 mm)
  • Linearity over the entire probe length is ± 0.04" (1 mm)

Leak Test Performance

EPA Static Leak and Continuous Test Certified

  • 0.2 gph (0.76 L/hr) Statistical Leak Detection (SLD) Test Note: Only available in SiteSentinel® iSite™ and SiteSentinel® Integra 100™: 397,000 gallons (1,502,809 liters)/month throughput for single-tank, 2-tank or 3-tank manifold installations; 30,000-gallon (113,562-liter) combined maximum capacity
  • 0.2 gph (0.76 L/hr) Statistical Leak Detection (SLD) Test: 99.1% Pd, 0.9% Pfa
  • Third-party certified to meet US EPA Static Leak Detection requirements in tanks up to 20,000 gallons (76,000 liters)
  • 0.2 gph (0.76 L/hr) Static Leak Test: 98.18% Pd, 1.82% Pfa
  • 0.1 gph (0.38 L/hr) Static Leak Test: 96.5% Pd, 3.5% Pfa
  • 0.2 gph (0.76 L/hr) Automatic Leak Detection (ALD)
  • 0.1 gph (0.38 L/hr) Automatic Leak Detection (ALD)

I.S. Barrier Wiring Diagram

Listings & Certifications

Ordering Information

Probe Length

Part No. Description
30-B053 53" (135 cm)
30-B069 69" (175 cm)
30-B077 77" (196 cm)
30-B089 89" (226 cm)
30-B101 101" (257 cm)
30-B105 105" (267 cm)
30-B113 113" (287 cm)
30-B125 125" (317 cm)
30-B137 137" (350 cm)
30-B149 149" (376 cm)

Probe Float Kits

Part No. Description
30-1509-02 2" (5.1 cm) Gas/Water Nitrophyl Float Kit
30-1509-01 2" (5.1 cm) Diesel/Water Nitrophyl Float Kit
30-3232 2" (5.1 cm) Density Measurement Kit
30-1508-02 4" (10.2 cm) Gas/Water Nitrophyl Float Kit
30-1508-01 4" (10.2 cm) Diesel/Water Nitrophyl Float Kit

Stainless steel floats available upon request

Note: No leak testing available with stainless steel floats

 

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