Conductivity, TDS & Salt Content Testing Applications:

• Water conditioning
• Wastewater monitoring and control
• Beverage production
• Aquaculture (fish farming)
• Pulp and paper processing
• Electroplating
• Photography

• Hard carrying case
• Combination conductivity/ TDS/salt probe
• 2 GB SD memory card
• User’s manual

• Embedded Microcontroller: Custom one-chip LSI device
• Display Type: LCD with green backlight
• Display Size: 2.05 x 1.5 in. (52 x 38mm)
• Parameters Measured: pH, ORP, conductivity, TDS content, DO content, salt content
• Measurement Range:
  • For pH: 0 to 14
  • For ORP: -1999 mV to +1999 mV
  • For conductivity: up to 200 mS (microSiemens)
  • For TDS: up to 132,000 ppm
  • For DO: up to 20 mg/L
  • For salt: up to 12% by weight
• Measurement Accuracy:
  • For pH: ± (0.02 pH units + 2 digits)
  • For ORP: ± (0.5% of reading + 2 digits)
  • For conductivity: ± 2% of full-scale reading + 1 digit
  • For TDS: ± 2% of full-scale reading + 1 digit
  • For temperature: ± 0.8°C/± 1.5°F
  • For DO: ± 0.4 mg/L in solution
  • For oxygen: 0.1% for oxygen in air
  • For salt: ±0.5% of value
• Measurement Resolution:
  • For pH: 0.01 unit
  • For ORP: 1 mV
  • For conductivity: 0.1 uS @ 200 uS full-scale (f.s.), 0.001 mS @ 2 mS f.s., 0.01 mS @ 20 mS f.s., 0.1mS @ 200 mS f.s.
  • For TDS: 0.1 ppm @200 ppm f.s., 1 ppm @2,000 ppm f.s., 10 ppm @ 20,000 ppm f.s., 100 ppm @ 100,000 ppm f.s.
  • For temperature: 0.1°F/0.1°C
  • For DO: 0.1 mg/L in solution
  • For oxygen: 0.1% in air
  • For salt: 0.01% of reading
• Temperature Compensation:
  • Automatic between 32° and 150°F (0° and 65°C) when using optional ATC temperature probe
  • Manually settable between 32° and 212°F (0° and 100°C) without ATC probe
• Storable/Recallable Readings: Maximum, minimum
• Data Logging Sampling Time: 1 second to 9 hours
• SD Card Capacity: 1 GB to 16 GB
• Settable Parameters: Date, time, auto power off, beep sound, sampling time, decimal point or comma decimal division, temperature unit, compensation temperature. Also salt and altitude compensation (DO mode only)
• Operating Temperature: 32° to 122°F (0° to 50°C)
• Operating Relative Humidity: 0 to 85%
• Power Supply: Six Alkaline “AA” batteries or optional 9-VDC AC adapter
• Power Consumption:
  • 14 mADC (normal operation, with backlight off and SD card not saving data)
  • 37 mADC with backlight on and card saving data
  • 49 mADC with backlight on and card saving data
• Dimensions of Meter: 6.97 x 2.68 x 1.77 in. (177 x 68 x 45mm)
• Weight of Meter: 1.08 lb. (489g)

• ORP probe (ORP14)
• Automatic temperature compensation (ATC) probe (TP07)
• Oxygen probe (DOP2001)
• Professional-grade 0 to 14 pH electrode (PHS1)
• Heavy-duty spear tip pH electrodes (PHS4HD and PHS6HD)
• Combination pH electrode/temperature probe (PHS5T)
• Combination pH electrode/temperature probe with automatic temperature compensation (PHS3K7)

1. No muss. Unlike data loggers that use an RS-232 interface, General’s SD card instruments don’t require the end user to buy, stock and connect cables.
2. No fuss. They also don’t require the user to add multiple jumpers between cable connectors to set up a serial communications link via RS-232. Adding even one jumper takes time and makes connections prone to failure.
3. No software. General’s SD instruments don’t even need software. The automatically store the data they capture in a format readable by Microscoft’s Excel spreadsheet program. Any computer equipped with Excel will automatically display – as a table or graph – the data logs on an SD card inserted into it.
4. No limits. SD cards are now available in capacities up to 32 GB. They’re not just a high-capacity removable storage medium, but a removable one as well. And because they’re solid-state, SD cards are inherently more reliable than rotating electromagnetic media like CD’s or DVD’s.
5. No waste. Because the SD cards are removable, they’re portable. Once you’re done uploading the data logs on an SD card to your computer, you can erase the card and use it again – with the same SD card instrument or a different one.