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pH/ORP Meter with Real-Time Data Logger


Item# PHH-SD1

Please contact Technical Sales Team for assistance.
pH/ORP Meter with Real-Time Data Logger PHH-SD1 PHH-SD1
  • This product is Discontinued, replaced by PHH444-Series
  • LCD with Green Light Backlighting
  • 0 to 14 pH or ±1999 mV for ORP Measurement
  • Real Time SD Memory Card Data Logger (SD Card Included)
  • Automatic Buffer Calibration (Buffers Sold Separately)
  • RS232/USB Interface (Optional Cable)
  • Automatic Temperature Compensation (Optional Probe)

PHH-SD1 Model Options

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Measurement Type
Supply Power

The OMEGA™ PHH-SD1 is innovative and easy to operate. What sets the PHH-SD1 apart from other pH/ORP meters is that it incorporates a real-time SD card data logger. The PHH-SD1 measures pH or mV (ORP) using standard electrodes with BNC connectors. Download data from the SD card directly into an Excel spreadsheet. This allows the user to do further data or graphical analysis without special software. The PHH-SD1 has a wide variety of applications from water conditioning, aquariums, beverage manufacturing and fish hatcheries to food processing, photography, paper and plating industries, educational and other laboratories.

Display: 52 x 38 mm (2.04 x 1.5") LCD with switchable green backlight
Measurement: 0 to 14 pH or -1999 mV to 1999 mV (ORP)
Sampling Time:
Auto: 1 second to 8 hrs 59 min 59 sec
Manual: Push the data logger button once will save data one time
Memory Card: SD memory card
Temperature Compensation: Automatic (with optional temperature probe) or manual
Display Update: At 1 second
Data Output (RS232/USB): With optional cable/software
Operating Temperature: 0 to 50°C (32 to 122°F)
Operating Humidity: Less than 85% RH
Power: 6 “AAA” alkaline batteries (included), or 9V power adaptor (optional)
Current Draw: 14 mA DC (without SD card or backlight), 49 mA (all functions)
Weight: 489 g (1.08 lb)
Dimensions: 177 H x 68 W x 45 mm D (6.96 x 2.67 x 1.77")
Input Impedance: 10^12 Ω Manual Temperature Compensation: Pushbutton on front panel
Automatic: With the optional temperature measurement probe from 0 to 65°C (32 to 149°F)
Calibration: pH4, pH7, and pH10, 3 points calibration provides the best linearity and accuracy
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Dashed lines are appearing when trying to test the pH. Tried resetting, using a new probe, and trying to recalibrate the pH meter but nothing succeeded. Any advise?

Asked by: Tim Mc
gives us a call or send us and email to You can try shorting out the BNC connector of the meter. It should read 7 ph.
Answered by: ASE HPO
Date published: 2020-08-11

Will the RS232/USB Interface let me bypass the SD card and have a computer record the readings? If so, I see both types of cables listed under Accessories. Will either one work?

Asked by: Steve S
Using RS232/USB interface you will be able to pull out data to your computer using HyperTerminal and the command protocols of this device.
Answered by: ASE HPO
Date published: 2020-06-18

A previous question asked if additional software is required to view the data on the SD card. However, is it possible to view the data via Excel without the need for SW-U101-WIN?

Asked by: Vikram
Thank you for your inquiry. The meter as an SD card that you can directly input into a PC or laptop to view the same data.
Answered by: JC ENGR
Date published: 2020-11-11

Is there any documentation related to the RS232 communication this unit has?

Asked by: GG Engineer
Thank you for your inquiry about the hand held pH meter. Please email our Flow Group at and can request that information from the Design Engineering Team.
Answered by: Application Engineer JC
Date published: 2021-08-27

Do you need software to view the data on the SD card?

Asked by: Rick_TO
Yes, you will need the software, SW-U101-WIN, to view the data.
Answered by: Application Engineer JC
Date published: 2020-03-06
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