USER GUIDE AC/DC Magnetic Meter Model SDL900
EXTECH INSTRUMENTS Introduction Thank you for selecting the Extech Instruments Model SDL900. This device is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Please visit our website (www.extech.com) to check for the latest version of this User Guide, Product Updates, and Customer Support.
EXTECH INSTRUMENTS Meter Description 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Probe Connection LCD Display HOLD Button POWER Button SET Button RANGE / Up Arrow Button FUNCTION / Down Arrow Button ENTER / LOG Button MAX / MIN Button RS‐232 Output Terminal (Side) Reset Button (Side) DC 9V Power Adapter Input Socket (Side) Tilt stand and Battery compartment (Back) 1 2 3 9 4 5 6 7 8 10 11 12 13 1 Probe 1. 2. 3. 4.
EXTECH INSTRUMENTS Operation AC/DC Magnetic Field Measurement Switch the meter ON by pressing and holding the POWER button for at least two seconds. Press and hold the FUNCTION button to select either DC or AC magnetic field measurement. Press and hold the RANGE button until the desired range (1 or 2) is selected. Select the desired unit of measure (mT or G). For DC magnetic field measurements, the display will show either the N or S indicator. For the North Pole, the N indicator will be shown.
EXTECH INSTRUMENTS Data Record (Maximum and Minimum Reading) Press the REC button to start the data record function. The LCD will display a REC symbol. Press the REC button again, and the REC MAX symbol along with the maximum reading value will be displayed. Press the REC button again to display the minimum value. The LCD will also show the REC MIN symbols. To exit this mode, press and hold the REC button for two seconds. The meter will return to the normal operating mode.
EXTECH INSTRUMENTS Auto Power OFF Management When the LCD displays POFF, press the ENTER button. Use the ▲ and ▼ buttons to select YES or NO. Selecting YES enables the Auto Power OFF management. Selecting NO disables the Auto Power OFF management. Press the ENTER button to save the setting. Set Beeper ON/OFF When the LCD displays BEEP, press the ENTER button. Use the ▲ and ▼ buttons to select either YES or NO. Selecting YES enables the audible beeper. Selecting NO disables the audible beeper.
EXTECH INSTRUMENTS Datalogger Mode Preparation for the Datalogger Function Insert the SD card into the SD card socket. If the SD card has never been used with the SDL900, please format it (see the section titled “SD Memory Card Format” in the Set Mode above). Note: It is strongly recommended that memory cards be formatted by the SDL900. If the SD card has problems use a computer to reformat the SD card and try again.
EXTECH INSTRUMENTS Manual Datalogging In the manual mode the user presses the LOG button to manually log a reading to the SD card. For Manual Datalogging, the sampling rate must be first set to ‘0’ seconds as described in the Set Mode section above. Press and hold the LOG button for at least 2 seconds and the DATALOGGER icon will appear on the LCD; the lower portion of the display will show p‐n (n = memory location number 1‐99). Momentarily press the LOG button to store a reading.
EXTECH INSTRUMENTS Battery Replacement When the low battery icon appears on the LCD, the batteries must be replaced. Several hours of accurate readings are still possible in this condition; however batteries should be replaced as soon as possible: Remove the two (2) Phillips screws from the rear of the meter (directly above the top of the tilt stand). Remove and safely place the battery compartment and screws where they will not be damaged or lost. Replace the six (6) 1.
EXTECH INSTRUMENTS Specifications Circuit Custom one‐chip of microprocessor LSI circuit Display (LCD) Size 52 x 30mm (2.04 x 1.18 in.) Measurement Unit mT Milli Tesla G Gauss Measurement Range, DC mT G Measurement Range, AC mT G Resolution Range 1 300.00 mT 0.01 mT Range 2 3,000.0 mT 0.1 mT Range 1 3,000.0 G 0.1 G Range 2 30,000 G 1G Range 1 150.00 mT 0.01 mT Range 2 1,500.0 mT 0.1 mT Range 1 1,500.0 G 0.1 G Range 2 15,000 G 1G Accuracy DC ± (5% rdg. + 10 dgt.
EXTECH INSTRUMENTS Power Current Normal Operation (SD card not saving data and backlight OFF): Approx. 13 mA DC When SD card is saving data and the backlight is OFF: Approx. 35 mA DC. *If the backlight is on, the power consumption increases by approximately 3 mA. Weight (meter and probe) 303g (10.7 oz.) Dimensions Main Instrument: 182 x 73 x 47.5 mm (7.1 x 2.9 x 1.9”) Probe: 195 x 25 x 19 mm (7.68 x 0.98 x 0.75 in.) Copyright © 2015‐2016 FLIR Systems, Inc.
