Laboratory Equipment > pH Meters > pH Meters | ||||||
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OverviewFor over a century, OHAUS has perfected the art of measurement through our line of weighing products. Taking the same approach to our weighing equipment, OHAUS now delivers Starter ST400D - a practical, affordable, low-maintenance DO Portable Meter equipped with optical technology. The ST400D is ideal for applications that require simple yet accurate DO measurements.
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For over a century, OHAUS has perfected the art of measurement through our line of weighing products. Taking the same approach to our weighing equipment, OHAUS now delivers Starter ST400D - a practical, affordable, low-maintenance DO Portable Meter equipped with optical technology. The ST400D is ideal for applications that require simple yet accurate DO measurements. APPLICATIONS: Field and lab Dissolved Oxygen measurement DISPLAY: Backlit Color Liquid Crystal Display (LCD) OPERATION: 4 AAA batteries (included) COMMUNICATION: N/A CONSTRUCTION: ABS Housing DESIGN FEATURES: 99 measurement memory, last calibration data recall, auto barometric pressure measurement, auto temperature compensation with manual salinity compensation
Product Specifications
Measurement Range
0.00 – 20.0 mg/L(ppm); 0 – 50°C
Measurement Resolution
0.01 mg/L; 0.1%; 0.1 °C
Accuracy
±0.2 mg/L(< 8 mg/L) or ±0.3 mg/L(8~20 mg/L); ±0.3 °C
Display
Color LCD Graphics
Electrode
STDO21 (Included)
Included Accessories
IP54 Sets, Electrode Clip, Wrist Strap, 4 AAA Batteries, STDO21 Optical DO Probe, Portable Bag
Accuracy D0
0.2 ppm
Accuracy ± (Temperature)
0.3 °C
Battery Life
12 hours with Disposable Batteries
Calibration
2 Point
Dimensions
5.91 in x 1.38 in x 3.54 in (150 mm x 35 mm x 90 mm) (LxHxW)
Parameter
Dissolved Oxygen
Power
4 AAA (LR03) Batteries (Included)
Net Weight
0.35 lb (0.16 kg)
Resolution (DO)
0.01
Temperature compensation
Automatic
Temperature resolution
0.1 °C
Temperature Sensor
10 KO NTC
Working Environment
41°F – 104°F, 80%RH, non-condensing (5°C – 40°C, 80% RH, Non-condensing)
Model | ST400 | ST400M | |||||
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ST400-B 30468964 |
ST400-F 30468965 |
ST400-G 30468966 |
ST400M-B 30468990 |
ST400M-F 30468991 |
ST400M-G 30468992 |
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Includes | ST400 | ST400, electrode | ST400, electrode, case | ST400M | ST400M, electrode | ST400M, electrode, case | |
Measuring Range | pH | -2 … 16.00 pH | |||||
mV | -1999 …1999 mV | ||||||
Conductivity | - | 0.0 μS/cm ... 199.9 mS/cm | |||||
TDS | - | 0.1 mg/l … 199.9 g/l | |||||
Salinity | - | 0.0 … 99.9 psu | |||||
Resistivity | - | 0… 20MΩ•cm | |||||
Temperature | -5 °C ... 110 °C | ||||||
Resolution | pH | 0.01 pH | |||||
mV | 1 mV | ||||||
Conductivity | - | 0.1 μS/cm, Auto-range | |||||
TDS | - | 0.01 mg/l, Auto-range | |||||
Salinity | - | 0.01 psu, Auto-range | |||||
Resistivity | - | 0.01Ω•cm, Auto-range | |||||
Temperature | 0.1 °C | ||||||
Accuracy | pH | ± 0.01 pH | |||||
mV | ± 1 mV | ||||||
Conductivity | - | ± 0.5% F.S. | |||||
TDS | - | ± 0.5% F.S. | |||||
Salinity | - | ± 0.5% F.S. | |||||
Resistivity | - | ± 0.5% F.S. | |||||
Temperature | ± 0.5 °C | ± 0.3 °C | |||||
Calibration | pH | 1-5 points, 6 predefined buffer groups | 1-5 points, 6 predefined buffer groups | ||||
Conductivity | - | 1 point, 5 predefined standards | |||||
Memory | 1000 measurements 5 calibration data for each sensor ID |
1000 measurements (pH + conductivity) 5 calibration data for each sensor ID |
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Power Supply | Rechargeable Li-battery, 2600mAh; > 300 charge and discharge times | ||||||
Size/Weight | Approximately 100W × 230 L × 40 H mm / 0.35 kg | ||||||
Display | LCD with Backlight | ||||||
Input | pH | IP67 BNC, impedance > 10e+12 Ω | |||||
Conductivity | IP67 Cinch, NTC 30 k | ||||||
Conductivity | - | IP67 LTW | |||||
Temperature Compensation | pH | ATC & MTC | |||||
Conductivity | - | ATC, Linear: 0.00 / °C to 10.00%/ °C Reference Temperature: 20 or 25 °C | |||||
IP Protection | P67 | ||||||
Housing | ABS / PC | ||||||
Communication | Micro-USB |
$1,230.96 |
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