The Lutron EMF-8218SD is a 3-axis EMF tester with a separate triaxial probe. It measures each axis (X, Y, Z) and the XYZ sum in three ranges up to 2000 µT (20000 mG) over 30 Hz to 300 Hz, and records readings with date and time on an SD card that opens directly in Excel.
The Lutron EMF-8218SD is a digital, triaxial EMF tester with a separate three-channel measurement probe for non-directional (isotropic) measurement. It measures the electromagnetic field on each axis (X, Y, Z) as well as the sum of XYZ, in micro Tesla or milli-Gauss, over three manually selected ranges: 20/200/2000 µT (200/2000/20000 mG), with a measurement bandwidth of 30 Hz to 300 Hz.
The meter is a real-time data recorder with a built-in clock and calendar. Readings are saved on an SD memory card (1 GB to 16 GB) together with the time information (year/month/date, hour/minute/second). No extra software is needed: the SD card is simply plugged into the computer and the saved data opens directly in Excel for further data or graphic analysis.
Automatic logging uses a sampling time of 2 to 3600 seconds; in manual mode each push of the logger button saves one reading and a position (location) number from 1 to 99 can be selected. The meter is powered by 6 x UM3/AA batteries or an optional DC 9V adapter.
| Manufacturer | Lutron Electronic |
|---|---|
| Model | EMF-8218SD |
| Measurement Method | Digital, triaxial measurement (X, Y, Z axis and sum of XYZ) |
| Units | mGauss, µTesla (1 µTesla = 10 mGauss) |
| Measurement Range and Resolution | 20 µTesla (0.01) and 200 mGauss (0.1); 200 µTesla (0.1) and 2000 mGauss (1); 2000 µTesla (1) and 20,000 mGauss (10) |
| Range Selection | Manual |
| Frequency Bandwidth | 30 Hz to 300 Hz |
| Accuracy (stated for 50/60 Hz) | ± (4%FS + 3 digits) @ 20 micro Tesla range / 200 milli Gauss range; ± (5%FS + 3 digits) @ 200 micro Tesla range / 2,000 milli Gauss range; ± (10%FS + 3 digits) @ 2000 micro Tesla range / 20,000 milli Gauss range. Spec. accuracy tested under 50 Hz or 60 Hz, 23±5 °C, 25% ~ 80% RH |
| Sensor | Coil |
| Overload Limit | 20000 mGauss |
| Test Environment | RF field strength less than 3 V/M and frequency less than 30 MHz |
| Circuit | Custom one-chip of microprocessor LSI circuit |
| Display | LCD, size 52 mm x 30 mm |
| Sampling Time of Display | Approx. 1 second |
| Datalogger Sampling Time | Auto: 2 to 3600 seconds (can be set to 1 second, but memory data may be lost); Manual: one saved reading per push of the logger button (sampling time set to 0 second), position (location) no. 1 to 99 |
| Data Error No. | ≦ 0.1 % of total saved data, typically |
| Memory Card | SD memory card, 1 GB to 16 GB |
| Over Indication | Display shows - - - - |
| Data Hold | Freezes the display reading |
| Memory Recall | Maximum and minimum value |
| Data Output | RS 232/USB PC computer interface (optional RS232 cable UPCB-02, optional USB cable USB-01) |
| Power Off | Auto shut off or manual off by push button |
| Operating Temperature | 0 ~ 50 °C |
| Operating Humidity | Less than 85% R.H. |
| Power Supply | Batteries (UM3, AA) x 6 PCs, or equivalent; AC/DC power adapter, DC 9V (optional) |
| Power Current | Normal operation (w/o SD card save data): approx. DC 24 mA; w/o backlight: approx. DC 18 mA; when SD card saves the data: approx. DC 50 mA |
| Standards | ISO-9001, CE, IEC1010 |
| Dimensions | 178 x 68 x 45 mm (7.0 x 2.7 x 1.8 inch) |
| Weight | 480 g / 1.05 LB (meter & probe) |
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