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ETher NDE SigmaCheck 2

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ETher NDE SigmaCheck 2
Product Description
Additional Info
Product Literature

ETher NDE SigmaCheck 2

Designed and produced by the people who created and manufactured the Hocking AutoSigma 3000

The SigmaCheck 2 Eddy Current Conductivity Meter is designed to provide the user with fast and accurate conductivity measurements at a reasonable price. The SigmaCheck is easy to use, whether you are a shop inspector or an engineer . It meets the requirements for conductivity measurements in the Aircraft manufacture and maintenance fields, where conductivity measurements are used to verify proper alloy/ temper or detect heat damaged components. It is also useful to determine the purity of precious metals or whether they are counterfeit.


  • Material verification / sorting
  • Heat treatment verification
  • Heat or fire damage investigation
  • Lightning damage investigation
  • Material aging assessment
  • Measuring phospher content of Cu Alloys
  • Monitoring of deposition process for non-ferrous material on a non-ferrous substrate.
  • Monitoring the condition of highly stressed parts
  • Forged / plated material verification
  • Non-conductive coating thickness measurement
  • Determining the purity / composition of materials i.e. gold bullion and coins.
  • Aircraft structures e.g. Paint thickness measurement
  • Assessment of aging of alloys.


PSIG001A - 13mm PSIG002A - 8mm
General Purpose
  • Typically used for sheets, bars and extrusions
  • Dia. 13.00 mm
  • Frequency: 60, 120, 240 and 480kHz
  • Lemo 5-Way Connector

Special Purpose Probe
  • Typically used with fasteners and other small parts.
  • Dia. 8.00 mm
  • Frequency: 60, 120, 240 and 480kHz
  • Lemo 5-Way Connector
  • Spring Loaded 8mm Probe Holder (Recommended)
Each probe is supplied with an SD card, which holds the probes' characteristics; this is then inserted into the SigmaCheck being used.


Compliance to Procedures:
The SigmaCheck 2 may be used to comply with the requirements of the following inspection procedures:

  • Boeing BAC5651
  • Airbus AITM 6-6004
  • ASTM E1004
  • AMS2658
  • BS EN 2007
  • MIL-STD-1537
  • Bell Helicopter BPS 4453


Operational Videos - Click on the image to see video

What's in the box & Accessories
Configure your Preferences

How to Movie: Basic Calibration

Configure Basic Operation
sigmacheck-how to configure basic operation
Basic Operation

Metal Sorting


Data Logging

PC Connectivity




Inspection Technology: Eddy Current
Operating Frequencies: 60kHz, 120kHz, 240kHz, 480kHz. Option of 960kHz
Conductivity Range: 0.5% IACS to 110% IACS, 0.28 - 64 MS/m
Accuracy: Probe must be in thermal equilibrium with test material and instrument and probe stabilized prior to testing.
Minimum 15-minute warm up time for stabilization, 20-30 minutes recommended
At 68°F / 20°C: 0 - 20% IACS: ± 0.05 IACS
At 68°F / 20°C: >20% IACS ± 0.25% of readout 
Display Resolution: Up to 3 decimal places
Lift Off: 13mm probe compensated to 0.020" (0.5mm); 8mm probe compensated to 0.010" (0.25mm)
Temperature Measurement: In-probe sensor (accurate to 32.9°F / 0.5°C)
Range 32°F - 122°F / 0°C - 50°C 
Automatic Temperature Compensation: Conductivity measurements are corrected to the 68°F / 20°C value
Environmental Range: 0 to 95% relative humidity, 32°F - 122°F / 0° - 50°C for reliable operation
Display: 2.8" (70mm), 320 x 240 pixels color display. LCD with selectable backlight
Construction & Storage: High impact, splash-proof, molded UL94-5VA flame-retardant ABS case. Protective rubber boot to protect the unit, probes, probe cable, operator manual on USB and removable stand.
Conductivity Standards: On top of unit. Removable for value verification..
Power: 2 x 1.5 V AA NiMH Batteries, Approximately up to 9 hours life. Recommended rechargeable batteries: Panasonic Eneloop Pro, 1.2V (min.2500 mAh or equivalent).
Size (L x W x D): 6.4" x 3.1" x 1.0" / 163 x 80 x 25 mm
Weight: 0.77 lbs. / 350g. including batteries
Data Logger: Removable 2GB micro SD Card allowing over 1 million readings to be stored
PC Connectivity: USB port for charger and PC communications
Probes: 13mm diameter for 60 kHz to 480 kHz
8mm probe operates at 60 kHz to 480 kHz
*factory calibration recommeded for all probe replacements or additions
Accessories: A range of conductivity reference standards traceable to US and European standards are available for in field use. Up to 5 can be mounted on an aluminum anodized Settings Reference Block Holder (Part Number: ASIG003).


sigmacheck2-standard-kit sigmacheck2-optional-accessories-available


Product Update - The SigmaCheck (KISIG001) has been upgraded to the SigmaCheck2 (KISIG001A). There are no major changes other than an upgraded board, increased battery life, and improved stability.  

ETher NDE SigmaCheck2 Complete Kit (model # KISIG001A):
Includes: Instrument with rubber boot and stand, 13mm diameter probe, Probe Cable, Dual conductivity setting reference ~ 9.4% IACS & 58.8% IACS, 2 ea AA NiMH Rechargeable Batteries, Battery Charger with adapter for UK, US and EU plugs (100-240 V), PC-USB cable, Manual on USB stick, Calibration Certificate, Software Utility on USB stick and Quick Reference Card. 

Click on the link for more information regarding standards - NDE Conductivity Standards

*Listed prices only valid for customers in North America 

Please Note: To add an item/multiple items to your shopping cart, check the corresponding box/boxes and click "Add To Cart"
Part #
Product Name Part # Price Qty
ETher NDE SigmaCheck2 Complete Kit w/ 13 mm Probe CM-ET-KISIG001A $5,495.00
ETher NDE SigmaCheck2 Complete Kit w/ 8mm Probe CM-ET-KISIG001A-8 $6,195.00
Probe, Conductivity Probe, Dia 13.00 mm, Straight, Lemo 5-way (SigmaCheck2) CM-ET-PSIG001A $1,005.00
Probe, Conductivity, Dia 8.00mm, Straight, Lemo 5-Way (SigmaCheck2) CM-ET-PSIG002A $1,705.00
Spring Loaded 8mm Conductivity Probe Holder (ASIG017) CM-ET-ASIG017 $180.00
Accessory, Lead, 5-Way Lemo to 5-Way Lemo, 1.2m (Silicone Sleeve) (SigmaCheck/SigmaCheck2) CM-ET-ALL05-L05-012-SIGA $205.00
Accessory, Polypropylene Hard Case SigmaCheck2 (340 x 275 x 123 mm) CM-ET-AC011 $215.00
Accessory, Hard Peli 1400 Case with foam inserts (SigmaCheck) CM-ET-ASIG004 $425.00
Accessory, Conductivity Test Block Holder Only (holds 5 Conductivity Test Blocks and 1 Dual Conductivity Reference Standard - please purchase separately) CM-ET-ASIG003 $205.00
Accessory, Dual Conductivity Reference Standards, Nominal Values 9.4% and 101% IACS (SigmaCheck/SigmaCheck2) CM-ET-ASIG010 $340.00
Accessory, Dual Conductivity Reference Standards, Nominal Values 28% and 59% IACS (SigmaCheck / SigmaCheck2) CM-ET-ASIG012 $340.00
Accessory, Dual Conductivity Reference Standards, Nominal Value 9.4% IACS (Nickel Silver) & 58.8% IACS (Aluminum Alloy 1200), (Recommended for Aluminum Alloy use). (SigmaCheck / SigmaCheck2) CM-ET-ASIG014 $340.00
Conductivity Standard - Titanium 6AL-4V (1.0 - 1.1 % IACS) CM-ET-S-TI $415.00
Conductivity Standard - Stainless Steel 303 S (2.1 - 2.5 % IACS) CM-ET-S-SS303S $370.00
Conductivity Standard - Nickel Silver LC1291 (9.0 - 9.9 % IACS) CM-ET-S-NISI $280.00
Conductivity Standard - Phosphor Bronze (16.8 - 21.9 % IACS) CM-ET-S-PBRZ $305.00
Conductivity Standard - Brass CZ 121 (23.3 - 26.6 % IACS) CM-ET-S-BRS $280.00
Conductivity Standard - Aluminum Alloy 5083 (26.6 - 30.0 % IACS) CM-ET-S-AL5083 $280.00
Conductivity Standard - Aluminum Alloy 7075-T6 (30.0 - 34.1 % IACS) CM-ET-S-AL7075-T6 $280.00
Conductivity Standard - Aluminum Alloy 2014A-T4 (34.7 - 36.9 % IACS) CM-ET-S-AL2014A-T4 $280.00
Conductivity Standard - Aluminum Alloy 2014A-T6 (37.0 - 40.3 % IACS) CM-ET-S-AL2014A-T6 $280.00
Conductivity Standard - Aluminum Alloy 6061-T6 (40.5 - 45.0% IACS) CM-ET-S-AL6061-T6 $280.00
Conductivity Standard - Aluminum Alloy 6082-T6 (45.1 - 49.0 % IACS) CM-ET-S-AL6082-T6 $280.00
Conductivity Standard - Aluminum Alloy 1200-H4 (57.2 - 60.5 % IACS) CM-ET-S-AL1200-H4 $280.00
Conductivity Standard - Copper (99.9 - 102.5 % IACS) CM-ET-S-CU $280.00