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Environmental Tester Guide

General DPH230SD PH Meter with SD Card Data Logging

General Tools DPH230SD
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General Tools, DPH230SD Data Logging Ph/ORP Meter with SD Card


  • Embedded Microcontroller: Custom one-chip LSI device
  • Parameters Measured: pH, ORP
  • 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
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List Price: $299.00
Sale: $209.30
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Product Information

pH, ORP Meter w/ Data Logging SD Card, DPH230SD

Accurately Measures pH and ORP (Oxidation-Reduction Potential). Applications include water conditioning, beverage production, wastewater monitoring, aquaculture (fish farming), aquariums, pulp and paper processing, electroplating and photography. This instrument's unique feature is its patented technique for storing sampled data in Excel format on removable SD memory cards.

What's In The Box

  • Carrying case
  • 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
Measurement Range For pH: 0 to 14
For ORP: -1999 mV to +1999 mV
Measurement Accuracy For pH: ± (0.02 pH units + 2 digits)
For ORP: ± (0.5% of reading + 2 digits)
Measurement Resolution For pH: 0.01 unit
For ORP: 1 mV
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
Operating Temperature 32° to 122°F (0° to 50°C)
Power Supply Six Alkaline “AA” batteries or optional 9-VDC AC adapter

General Tools DPH230SD Product Specifications Summary:
(for full specs please see the full specs tab or the data sheet)

Environmental Testers / Physical Property/PH Meters Template

Style (pH Meters)Hand-Held
Minimum pH0 pH
Maximum pH14 pH
pH Resolution0.01 unit for pH; 1 mV for ORP
pH Accuracy± (0.02 pH units + 2 digits)
ATC Temperature CompensationYes
Measuring ConductivityNo
Waterproof HousingNo
Data Hold/RecallNo

Test Equipment General Attributes

Unique Features•Measures pH and ORP using optional
•Choose an electrode or probe with the right
characteristics for your application from the list
at lower right
•Optional ATC probe (#TP07) automatically
calibrates pH electrode to pH 4, pH 7
and pH 10
•Displays maximum and minimum readings
•Performs real-time automatic data logging
at sampling time settable from 1 second to
•Also supports manual logging and changing
of card storage location.
Warranty1 YEARS
Power Supply VoltageBattery Powered
Safety ApprovalCE, RoHS
Data Logging What's This?Yes
Interfaces I/O RS-232
StorageSD Card
Product Weight1.08 LBS 
Battery Type9v 
Product Height1.77 IN
Product Length6.97 IN 
Product Width2.68 IN
ECCN Number1A995
HTS/Schedule B Number9025.80.5000


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