Extech Instruments SDL100-NIST User Manual
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Extech Instruments SDL100-NIST User Manual

Ph/orp meter
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USER GUIDE
pH/ORP Meter
SD Card real-time Datalogger
Model SDL100

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Summary of Contents for Extech Instruments SDL100-NIST

  • Page 1 USER GUIDE pH/ORP Meter SD Card real-time Datalogger Model SDL100...

  • Page 2: Meter Description

    Introduction Congratulations on your purchase of the Extech SDL100 pH/ORP Meter, an SD Logger Series meter. This meter displays and stores pH (from 0 to 14.00pH) and ORP (±1999mV) readings. A temperature probe (supplied) can be inserted to the meter to provide automatic temperature compensation.

  • Page 3: Getting Started

    Getting Started Power ON-OFF  Press and hold the power button for at least 1.5 seconds to power ON the meter.  Press and hold the power button for 1.5 seconds to power OFF the meter.  This meter is powered by six (6) 1.5VDC ‘AA’ batteries or by optional AC adaptor. If the meter will not switch ON please check that fresh batteries are installed in the rear battery compartment (refer to the battery replacement section later in this guide) or, in the case of the AC adaptor, check that the adaptor is connected correctly to the meter and to an AC source (refer to the AC...
  • Page 4 Manual / Automatic Temperature Compensation (for pH measurements only) Ph measurements are most accurate when the temperature of the solution under test is known and a temperature compensation factor is applied to the measurement. This is achieved using Manual or Automatic Temperature Compensation. For Manual Temperature Compensation, the external temperature probe is not connected to the meter and the temperature of the solution under test is manually entered in the Setup Mode.

  • Page 5: Setup Mode

    Setup Mode Basic settings at a glance To view the current configuration of the meter with regard to time, date, and datalogging sampling rate press the SET button momentarily. The meter will now display the configuration in quick succession. Repeat as necessary to observe all the information. Accessing the Setup mode Press and hold the SET button for at least 1.5 seconds to access the Setup menu.
  • Page 6 Enabling/Disabling the Auto Power OFF Feature Access the PoFF parameter. Use the arrow buttons to select ON (enable) or OFF (disable). With the Auto Power OFF feature enabled, the meter will automatically switch OFF after 5 minutes of inactivity. Press ENTER to confirm setting. Press and hold the SET button for at least 1.5 seconds to exit to the normal operation mode (or simply wait 7 seconds for the meter to automatically switch to the normal operating mode).

  • Page 7: Ph Calibration Procedure

    System Reset If the meter’s keys become inoperable or if the display freezes the Reset button can be used to reset the instrument. Use a paper clip or similar item to momentarily press the reset button located on the lower right side of the instrument under the snap-off compartment cover.
  • Page 8 Clearing pH Calibration data 1. From the normal operation mode, press and hold the CAL button for at least 1.5 seconds until the CAL icon appears on the display and then release the CAL button 2. Use the arrow keys to scroll to the CLR display 3.
  • Page 9 Automatic Datalogging In automatic datalogging mode the meter takes and stores a reading at a user-specified sampling rate onto an SD memory card. The meter defaults to a sampling rate of one second. To change the sampling rate, refer to the Setup Mode section (the sampling rate cannot be ‘0’ for automatic datalogging): Select the sampling rate in the Setup Mode (refer to Setup Mode section) to a value other than zero.

  • Page 10: Battery Replacement And Disposal

    RS-232/USB PC Interface For streaming of data to a PC via the RS232 Output jack, the optional 407001-USB kit (RS232 to USB cable and driver CD) along with the 407001 software (available free at www.extech.com/sdl100) are required.   AC Power Adaptor This meter is normally powered by six (6) 1.5V ‘AA’...

  • Page 11: Specifications

    Specifications General Specifications Display 52 x 38mm (2 x 1.5”) Backlit LCD Status indicators Out-of-range (----) and low battery Measurement Units pH, ORP, °C, and °F Temperature probe Thermistor (PN 850188) Datalogger Sampling Rate AUTO LOGGING: From 1 second to 8 hours 59 minutes and 59 seconds.

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Sdl100

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