
ISSOLVED OXYGEN INSTRUMENTATION
ISSOLVED OXYGEN INSTRUMENTATION
Dissolved Oxygen Meter with Real Time SD Card Data Logger
DOH-SD1
U LCD with Green Light Backlighting 
U Real Time SD Memory Card Data Logger (SD Card Included) 
U Altitude and Salt Adjustments 
U RS232/USB Interface (with Optional Cable) 
U Automatic Temperature Compensation
The OMEGA® DOH-SD1 is innovative and easy to operate. What 
sets the DOH-SD1 apart from other dissolved oxygen meters is 
that it incorporates a real-time SD card data logger. The DOH-SD1 
measures dissolved oxygen and has adjustments for altitude and 
salt. Download data from the SD card into an Excel spreadsheet. 
This allows the user to do further data or graphical analysis without 
special software. The DOH-SD1 has a wide variety of applications 
from water conditioning, aquariums, and fish hatcheries to food 
processing, educational and other laboratories.
Specifications
Display: 52 x 38 mm (2.04 x 1.5") LCD with 
switchable green backlight 
Measurement: 
 Dissolved Oxygen: 0 to 20 mg/L 
 Air Oxygen: Reference only
Sampling Time:  
 Auto: 1 second to 8 hours 59 minutes 59 seconds 
 Manual: Push the data logger button once will save data one time
Memory Card: SD memory card (with optional SD card) 
Display Update: @ 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 back light), 
49 mA (all functions)
Weight:
 Meter: 489 g (1.08 lb) 
 Probe: 335 g (0.74 lb)
Dimensions:  
 Instrument: 177 L x 68 W x 45 mm D (6.96 x 2.67 x 1.77") 
 Probe: 28 dia x 190 mm (1.1 x 7.48")
Measurement and Range: 
 Dissolved Oxygen: 0 to 20.0 mg/L (liter) 
 Oxygen in Air: 0 to 100.0% (reference only) 
 Temperature: 0 to 50°C (32 to 122°F)
Resolution: 
 Dissolved Oxygen: 0.1 mg/L 
 Oxygen in Air: 0.1%  
 Temperature: 0.1°C (32.18°F) 
Accuracy: 
 Dissolved Oxygen: ±0.4 mg/L 
 Oxygen in Air: ±0.7%  
 Temperature: ±0.8°C (1.5°F)
Compensation: 
 Automatic Temperature: 0 to 50°C (32 to 122°F) 
 Adjustable Salt: 0 to 50%  
 Elevation: 0 to 8900 meters
Oxygen Probe: Polarographic
 To Order Visit omega.com/doh-sd1 for Pricing and Details
 Model No.  Description
DOH-SD1
   with SD card 
 SW-U101-WIN  Software for data logging from meters, 
   with USB and RS232 cables 
 HC-SD  Replacement hard case 
 SC-SD  Soft case 
 ADAPTER-SD  AC adaptor 
 USB-SD  Spare USB cable (SW-U101-WIN   
   software required) 
 RS232-SD  Spare RS232 cable (SW-U101-WIN   
   software required) 
 DOE-SD1  Replacement dissolved oxygen probe 
 2GB-SD   Spare 2 GB SD memory card
Comes complete with operator’s manual, probe, spare probe head, 
electrolyte, 2 GB SD card, hard carrying case and 6 “AAA” batteries.
Ordering Example: DOH-SD1, data logging dissolved oxygen meter with 
SD card and ADAPTER-SD, AC adaptor.
  Data logging dissolved oxygen meter 
DOH-SD1
Order Online
Over 100,000 Products Available!
®
To download information and to order Dissolved Oxygen 
Instrumentation products online, visit omega.com
F-1