Sensor
| | Sensor | Description | Active area |
| 2X-250 | 2Dex™ 2X-250 | 2Dex™ standard sensor | 0.1 mm2 |
Note: 2X-251 sensors have not been made available as plug-and-play sensors, as the calibration process nullifies the benefit afforded by 2X-251 sensors. Calibrated 2X-251 sensors would provide no benefit to accuracy compared to the more affordable 2X-250 sensors offered here.
Magnetic field performance
Performance specifications of plug-and-play sensors match that of a Hall probe and teslameter—see teslameter specifications for measurement performance details.
Temperature compensation
| | Included thermistor | Compensation range |
| 2X-250-FA | Yes—epoxied to the back of the sensor | 0 °C to 90 °C (273 K to 363 K) |
| 2X-250-FT | Yes—thermistor separate from Hall sensor | 0 °C to 90 °C (273 K to 363 K) |
| 2X-250-AI (coming soon) | Yes—embedded inside sensor | 0 °C to 90 °C (273 K to 363 K) |
| 2X-250-3D (coming soon) | Yes—embedded inside sensor | 0 °C to 90 °C (273 K to 363 K) |
Temperature range
| | Minimum temperature | Maximum temperature |
| FA Flat axial | 0 °C (273 K) | 90 °C (363 K) |
| FT Flat transverse | 0 °C (273 K) | 90 °C (363 K) |
| AI Axial insert (coming soon) | 0 °C (273 K) | 90 °C (363 K) |
| 3D 3-axis (coming soon) | 0 °C (273 K) | 90 °C (363 K) |
For cryogenic versions of the FA and FT packages, please contact Lake Shore Sales to request a customized solution.
Vacuum compatibility
| Package | Rating |
| FA, FT, AI, 3D | High vacuum (down to 10-4 Pa) |
Inline connector
Insulation: Nylon 46 (290 °C maximum temperature)
Socket internal contacts: Gold over nickel* coated beryllium-copper
Pins: Brass alloy 360 (RoHS compliant)
Configuration: 8-pin (2 rows
× 4 pins)
Solder: SAC305 lead-free solder
*Due to nickel content, these connectors should be kept away from sensitive magnetic field measurements and large magnetic fields
Pinout
Single-axis sensors: TX connector only
3-axis sensors: Both TX and YZ connectors
Hall sensor
| Designator | Signal | Sensor wire color | Cable wire color (single/X axis) | Cable wire color (Y axis) | Cable wire color (Z axis) |
| 1 | I+ | Blue | Orange | Green | Violet |
| 2 | I- | Clear (copper) | White (from orange pair) | White (from green pair) | White (from violet pair) |
| 3 | V+ | Red | Red | Yellow | Blue |
| 4 | V- | Green | White (from red pair) | White (from yellow pair) | White (from blue pair) |
Thermistor
| Designator | Signal | Sensor wire color | Cable wire color |
| 1 | T+/I+ | Green | Brown |
| 2 | T-/I- | Green | White (from brown pair) |
| 3 | V+ | — | Black |
| 4 | V- | — | White (from black pair) |
Note: The thermistor (T) leads are in a 2-lead configuration up to the point of the sensor connector (designated with T+ and T-, though these leads are not polarized and may be switched). If connector removal is desired for direct attach to user equipment, protect the thermistor calibration by ensuring the length of 2-lead wire is not altered. Trimming or adding to the amount of wire in a 2-lead configuration will cause a shift in temperature readings.
Teslameter cable
| | Single-axis | 3-axis |
| Diameter | 4 mm (0.17 in) | 5.2 mm (0.21 in) |
| Bend radius | 40 mm (1.57 in) | 52 mm (2.05 in) |
| Operating temperature range | -40 °C to 80 °C |
| Conductors | 4 twisted-pair | 8 twisted-pair |
| Cable shield | 100%-coverage foil |
| Cable insulation | Modified polyphenylene ether |
| Connector | 26-pin Mini-D with quick-release latch |
Optional extension leads
Note: Two extension leads are required to extend 3-axis sensors (one for the X-axis sensor and thermistor connections, and another for the Y- and Z-axis sensors)
| | FXS-C75 | FXS-P75 |
| Purpose | Standard extensions | Blocking heat leak in cryogenic conditions |
| Wire configuration | Four (4) twisted pairs | Four (4) twisted pairs |
| Wire material | 34 AWG copper with poly-nylon insulation | 32 AWG phosphor-bronze with polyimide insulation |
| Length | 75 cm (30 in) | 75 cm (30 in) |
| Maximum temperature | 130 °C (poly-nylon insulation) | 220 °C (SAC305 solder) |
Connectors: Mate with sensor leads and teslameter cable assemblies (see inline connector specifications for details)