Semsons Tech

Gold Analyzer XRF Signet Si-Pin with Touch Screen

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Gold Analyzer XRF Signet Si-Pin with Touch Screen

Tests gold, silver and platinum purity in 5 to 60 seconds with no acid and no scratching. The computer sits inside the machine, so there is no laptop to connect.

✔ Touch screen on the machine - the computer is inside, nothing to wire up
✔ 0 to 24K - exact karat, to ±0.30% on gold content
✔ No damage to the piece - no acid, no filing, no marks
✔ Catches gold plating - alerts when only the surface is gold
✔ Catches tungsten-filled bars - the fake acid and density tests miss
✔ Up to 72 elements - the whole alloy, not only the gold

For jewellers, gold buyers, bullion traders, gold loan branches and hallmarking centres. Installation and training included.

WhatsApp +91 98216 12340 · Semsons Tech, since 1978.

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Gold Analyzer XRF Signet Si-Pin with Touch Screen

The whole testing station in one machine - analyzer, computer and screen together on the counter.

The Signet Si-Pin tests gold by X-ray fluorescence. In its plain form it has to be wired to your own PC before it can do anything. This version has the computer and a large touch screen built into the body. You switch it on, place the item in the chamber and press test. In 5 to 60 seconds the screen shows the karat, the purity percentage and every metal in the alloy. Its detector and software read up to 72 elements and hold the gold figure to within ±0.30%. Nothing is scratched, nothing is filed, and the customer gets the piece back exactly as they handed it over.

How It Works

The machine sends a very low-power X-ray at the item. Every metal reacts to X-rays in its own way and sends back its own signal. The detector reads those signals, and the computer inside the machine works out which metals are present and how much of each. From that it calculates the karat. This is why the test is exact and why it is non-destructive. Nothing touches the piece except light.

How to Use It

  1. Place the item in the chamber and close the door. The built-in camera puts the test spot on the screen, so you can aim at the metal and not at a stone.
  2. Press test on the touch screen. Choose a quick 5 to 10 second check for buying decisions, or a 60 second test when the number is going on a certificate.
  3. Read the result on the screen - karat, gold percentage and the full metal list. Print it, save it to the customer's record, or send it out over USB or the network.

There is no sample preparation and no chemical to handle.

What the Touch Screen Model Adds

FeatureWhat you get
Computer inside the machineNo laptop, no cables between two boxes, no separate power point for a PC
Large touch screen on the frontKarat, purity %, metal breakdown, plating alert and camera view on one screen
Full Windows desktopYour own billing, stock or accounts software can run on the same machine
Customer records on boardEvery test is stored against the customer, with date and time
Printer connects directlyA report goes to the customer without exporting the reading anywhere first
Remote support over the internetOur engineer can open the software and fix a setting without a site visit
One power switchThe analyzer and the computer start and shut down together

What It Protects You From

ProblemWhat the analyzer does
Gold-plated brass or copper sold as goldRaises a gold plating alert when only the surface is gold
Tungsten-filled bars and biscuitsSees the tungsten core under the gold layer. Density tests miss this because tungsten weighs almost the same as gold.
Under-karat jewelleryGives the exact karat, not a range. 18K that is really 16K shows up at once.
Lead or cadmium in the alloyReports both, which matters for export orders
Disputes with customersPrints a report with the full metal breakdown, from the machine itself

What You Can Test

Rings, chains, bangles, necklaces and earrings, including pieces with stones set in them. Gold coins, biscuits and bars. Scrap and old gold. Silver, platinum and palladium. Watches and dental alloys. Solid pieces, powder and liquid samples. Anything with a metal surface large enough for the 1.5 mm test spot.

Key Specifications

ParameterSpecification
ModelSignet Si-Pin with Touch Screen
TechnologyX-ray fluorescence (XRF), non-destructive
Built-in computerWindows PC inside the machine, driven from the touch screen - no external laptop needed
DisplayWide touch screen showing karat, purity %, metal breakdown, plating alert and camera view
DetectorSi-PIN diode, 7 mm² active area, 190 eV resolution
Karat range0 to 24K
Tolerance±0.30% on gold content
Elements readUp to 72 elements
Test time5 to 60 seconds (quick check 5–10 s, standard 30 s, precision 60 s)
Metals detectedGold, silver, platinum, palladium, rhodium, copper, nickel, zinc, cobalt, iridium, ruthenium, tungsten, lead, manganese and more
Sample typesSolid, powder and liquid
Gold plating detectionYes, on-screen alert
Tungsten fill detectionYes
Test spot1.5 mm diameter, collimator filter set
Measuring depth15 to 20 microns
X-ray tubeRhodium anode, 40 kV / 200 µA, 4 W low-power tube
Tube lifeAbout 8,000 hours, roughly 48,000 tests
CameraBuilt-in HD camera for positioning
ReportsPrinted from the machine, with test history and customer records held on the built-in PC
ConnectivityUSB and Ethernet, direct printer support
Remote supportRemote desktop access for software support over the internet
SafetySealed lead-shielded chamber, X-ray cuts off when the door opens, stepped inner shielding, door interlock
Radiation complianceBIS, IEC and FDA radiation safety standards
Power220–240 V AC, 50 Hz
Warranty1 year, extendable
InstallationOn-site by a Semsons technician, with radiation safety check and calibration
TrainingOn-site operator training included

Who Uses It

  • Jewellery showrooms checking every piece that comes in and goes out, at the counter where the customer is standing
  • Gold buyers and cash-for-gold counters who need a fast, safe decision on old gold and a printed slip to show for it
  • Bullion traders verifying bars and biscuits before payment
  • Gold loan branches valuing customer gold for collateral, with the reading saved against the customer file
  • Hallmarking centres giving official karat certification
  • Refiners confirming output purity before dispatch
  • Manufacturers and exporters who need a purity report with each order
  • Branches with no IT support that cannot keep a separate office PC running next to the analyzer

Common Questions

How is this different from the Signet Si-Pin without the touch screen?

It is the same analyzer with the same Si-PIN detector, so the testing side is identical. The plain Signet Si-Pin has no screen and no computer, and has to be connected to your own PC or laptop before it will run. This version has both built into the body and works on its own.

How is this different from the Gold Analyzer XRF Signet - PC?

Both have the Windows computer and the screen built into the body, so the counter setup is the same. The difference is the detector and software tier. This one reads up to 72 elements and holds the gold figure to within ±0.30% on gold content, where the Gold Analyzer XRF Signet - PC reads 7 metals in one pass to ±0.50%. Take this one when the figure goes onto a certificate or an export document, and the Signet - PC when it is for a buying, pledging or scrap decision at the counter.

Is it safe to stand next to all day?

Yes. The X-ray tube runs at only 4 watts, the chamber is sealed and lead-shielded, and the X-ray switches off automatically the moment the door opens. The machine will not run with the door open. It meets BIS, IEC and FDA radiation safety standards.

Will it damage the jewellery?

No. Nothing touches the piece. There is no scratching, no acid and no filing. The customer gets the item back exactly as it was.

How is this better than acid testing?

Acid gives you a rough range of about 2 to 3 karats either way, damages the piece, and cannot see plating or tungsten fills. XRF gives you the exact karat and the full metal breakdown in seconds, with no damage.

Can it test a piece with stones in it?

Yes. The camera puts the test spot on the screen, so you aim the 1.5 mm spot at the metal and avoid the stone. The stones do not need to be removed.

Does it detect fake gold bars?

Yes. Tungsten-filled bars pass density tests because tungsten weighs almost the same as gold. XRF reads the composition and flags the tungsten core under the gold layer.

Can I print a report for the customer?

Yes. Connect a printer to the machine and the report prints with the karat, purity percentage and metal breakdown. Every test is also kept in the history on the built-in computer, and can be exported over USB or the network.

Can you fix a software problem without coming to my shop?

In most cases, yes. With the machine on your internet connection, our engineer can take remote desktop access, look at the software and correct a setting or a calibration entry while you watch the screen.

How long does the X-ray tube last?

About 8,000 hours of operation, which is roughly 48,000 tests. At 50 tests a day that is over two and a half years. Replacement tubes are stocked by Semsons.

Does it need special power or a special room?

No. It runs on a normal 220–240 V socket and sits on a counter. No separate room and no extraction is needed.

Is training included?

Yes. A Semsons technician installs the machine, checks radiation safety, calibrates it against reference samples and trains your operator on site.

Pricing, Installation & Support

Price is quoted per configuration, because the detector grade and the software options change the figure. Send us a WhatsApp message with your daily testing volume and we will quote the right setup. On-site installation, calibration and operator training are included. 1 year warranty, extendable with an annual maintenance contract that covers calibration checks and tube health. Replacement X-ray tubes and calibration reference samples are stocked. EMI options are available through partner banks. Service across 16+ Indian cities.

Sales: WhatsApp +91 98216 12340 | Wholesale: WhatsApp +91 80823 38010

Semsons Tech - Where Quality Speaks For Us. Since 1978.

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