DeFelsko SPG1 PosiTector SPG 1 Standard Surface Profile Gage with PRBSPG Integral Probe for Blasted Steel Range: 0 to 500 um (0-20 mils)
Measures and records peak to valley surface profile heights
Conforms to ASTM D4417-B, AS 3894.5-C (with optional 30° tip angle), U.S. Navy NSI 009-32, SANS 5772 and others
The DeFelsko SPG1 PosiTector SPG 1 Standard Surface Profile Gage is a precise, rugged tester designed to measure and record peak to valley surface profile heights on blasted steel.
Conforms to ASTM D4417-B, AS 3894.5-C (with optional 30° tip), U.S. Navy NSI 009-32, SANS 5772 and others.
Kit Contents
The DeFelsko PosiTector SPG 1 Standard Surface Profile Gage Kit includes everything needed for testing:
- PosiTector Standard Gage Body BDYSTD
- PosiTector SPG Probe PRBSPG
- Glass Zero Plate and Metal Check Shim(s)
- Protective Rubber Holster
- Wrist Strap and Protective Lens Shield
- 3 AAA Alkaline Batteries
- PosiSoft Software and USB Cable
- Long Form Certificate of Calibration Traceable to PTB
- Protective Carrying Case and Instructions
- Two (2) Year Warranty
Features
Simple
- Fast measurement rate of over 50 readings per minute—ideal for quickly and accurately measuring large surfaces
- NEW Larger 2.8" impact resistant color touchscreen with redesigned keypad for quick menu navigation
- NEW On-gage help explains menu items at the touch of a button
- RESET feature instantly restores factory settings
Durable
- Alumina wear face and tungsten carbide tip for long life and continuous accuracy—field replaceable tips
- NEW Weatherproof, dustproof, and water-resistant—IP65-rated enclosure
- NEW Ergonomic design with durable rubberized grip
- Rugged, indoor/outdoor instrument - ideal for field or shop use
- Shock-absorbing protective rubber holster for added impact resistance
- Two year warranty on gage body AND probe
Accurate
- Certificate of Calibration showing traceability to PTB included
- Built-in temperature compensation ensures measurement accuracy
- Glass Zero Plate and metal check shim included
- Conforms to national and international standards including ASTM D4417 Method B and SSPC-PA17
Versatile
- PosiTector body accepts all PosiTector SPG, RTR, 6000, 200, DPM, IRT, SST, SHD, BHI, and UTG probes easily converting from a surface profile gage to a coating thickness gage, dew point meter, soluble salt tester, hardness tester, or ultrasonic wall thickness gage
- 30º angle interchangeable probe tip available for special surface profile applications
- Cabled probes available for blasted steel, textured coatings, and concrete profile
- NEW Auto rotating display with Flip Lock
- Selectable display languages
- Mils/Microns switchable
Powerful
- Statistics mode continually displays/updates average, standard deviation, min/max, and number of readings while measuring
- NEW Screen Capture—save 100 screen images for record keeping and review
- HiLo alarm audibly and visibly alerts when measurements exceed user-specified limits
- NEW Instant-on feature quickly powers up the gage if recently powered down
- NEW Up to 30% longer battery life
- USB port for fast, simple connection to a PC and to supply continuous power. USB cable included
- PosiSoft USB Drive—stored readings and graphs can be accessed using universal PC/Mac web browsers or file explorers. No software required.
- Every stored measurement is date and time stamped
- Includes PosiSoft Software for viewing and reporting data
- Software Updates via web keep your gage current
Advanced Models Features
Includes ALL features as shown above plus:
- NEW Storage of 1,000 readings per probe-stored readings can be viewed or downloaded
PosiSoft Suite of Software
Downloads
F.A.Q.
Is the spring pressure for the PosiTector SPG TS lower than the SPG CS?
The spring pressure is slightly greater than the SPG TS to allow adequate seating of the tip in the profile. Keep in mind that no standards exist for such a method, so we designed the pressure based on our internal tests.
Is the PosiTector SPG TS traceable to PTB or NIST?
All PosiTector SPG probes including the SPG TS are traceable to PTB
Do your instruments require any formal training for use? Do you offer ‘demo’ models?
No. Our instruments are designed for simple operation, feature easy-to-use menus, both full and quick instruction manuals, and helpful videos. In lieu of demonstration models, we provide unlimited technical support via telephone and/or email, and a limited 30-day money back guarantee
Is the PosiTector SPG calibrated at the factory?
The PosiTector SHD arrives fully calibrated and ready to measure. A Long-Form Certificate of Calibration traceable to NIST or PTB is included, which documents actual readings taken by your instrument at our calibration laboratory on standards traceable to a national metrology institute. Beware of ‘Certificates’ or ‘Certificates of Conformance’ offered by competitors. These typically do not include actual instrument readings, and are often insufficient to meet common quality requirements.Gage accuracy and correct operation can be verified using the included metal shim and glass zero plate.
Can I measure curved surfaces with the PosiTector SPG?
To measure accurately, the PosiTector SPG’s probe foot must contact the surface over its entire area. On tightly curved surfaces, the edges of the probe do not sit on the surface, skewing the readings.Our PosiTector SPG instruments conform to Method B as described by ASTM D 4417 "Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel". The entirety of ASTM D 4417 specifically references flat, blasted steel surfaces. As such, any depth micrometer instrument used to measure the surface profile of a curved, blasted steel surface does not conform to ASTM D 4417.Replica tape is ideal for recording the blast profile of curved surfaces, and DeFelsko recommends the PosiTector RTR Replica Tape Reader instrument as a reliable measurement alternative.
Can the PosiTector SPG be used on non-metallic substrates?
Yes! While primarily used to measure blasted steel, the PosiTector SPG can be used for many applications. The PosiTector SPG TS and PosiTector SPG CS also feature an extended range and larger radius probe tip to suit a wide range of applications:
- The PosiTector SPG CS will quickly and accurately measure the surface profile of textured coatings.
- The PosiTector SPG TS will quickly and accurately measure the surface profile of concrete.
Why are there 30? and 60? tips for the PosiTector SPG?
The PosiTector SPG uses a durable tungsten carbide tip for long life and continuous accuracy. If required, SPG probe tips can be replaced by the gage operator
- The 60° tip complies with most test standards including ASTM D 4417 B.
- 30° tips are available for conformance to Australian standard AS 3994.5-C.
Can the PosiTector SPG be moved over the surface to provide a ‘scan’?
No. The PosiTector SPG is a depth-micrometer instrument which quickly and accurately measures and records peak-to-valley surface profile heights on a blasted steel surface.Like other instruments of this type, the PosiTector SPG is not dragged across a blasted surface: the gage operator takes an individual reading in one location on a surface, lifts and places the gage on another location on the surface for another individual reading, and so on.
Does the PosiTector SPG measure pit depth?
No. Pit gages are a general category of instruments used to measure pits and other surface variations. The PosiTector SPG is specifically designed to measure and record peak-to-valley surface profile heights on a blasted steel surface
Should I purchase the PosiTector RTR or PosiTector SPG for my application?
Both instruments conform to ASTM D 4417 "Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel".The PosiTector SPG conforms to Method B of ASTM D 4417. The PosiTector SPG measures quickly, and has no per-test cost. It keeps a digital record of each measurement, is less operator dependent, as no burnishing of replica tape is required. It also has a greater range than replica tape.The PosiTector RTR conforms to Method C of ASTM D 4417. It is used together with Testex Replica tape, a widely used and respected method to measure surface profile. It has the ability to measure on curved surfaces, and gives the user the option to retain the replica tape; a physical replica of the tested surface.
How often should the PosiTector probe be recalibrated?
PosiTector probes include a Certificate of Calibration with no expiry or end date. They have no shelf life, therefore the length of time in the field is not a good indicator for recalibration intervals. Many organizations with quality programs and recertification programs require annual recalibrations, and this is a good starting point for most users. DeFelsko recommends that customers establish calibration intervals based upon their own experience and work environment. Based on our product knowledge, data and customer feedback, a one year calibration interval from the date the instrument was placed in service is a good starting point
Why does the finger grip sleeve on the PosiTector SPG OS feel loose?
The PosiTector SPG OS is designed with a self-leveling probe foot to ensure perpendicularity to the part being measured. The finger grip sleeve needs to have a loose fit in order for self-leveling to work.
What is the benefit of the optional Large V-groove Adaptor?
The Large V-groove Adaptor offers enhanced stability on 30 – 45 cm (12 – 18") OD pipes and helps with proper positioning and measuring technique. The adaptor should not be used on pipes greater than 46 cm (18”).
Can I compare readings from a PosiTector SPG OS with readings from a PosiTector SPG or SPG S?
On flat surfaces, the PosiTector SPG, SPG S, and SPG OS probes will measure similarly. However, measurements taken by the PosiTector SPG OS (or any depth micrometer surface profile instrument) on rounded surfaces should only be compared with measurements taken on surfaces with a similar radius. On flat surfaces, the probe foot contacts the substrate over its entire area, while on curved surfaces the probe foot contacts an increasingly smaller area as the radius decreases. This may cause a slight decrease in the reported peak-to-valley surface profile height, since the probe foot sits on fewer peaks as the contact area decreases.
