E-mail: michael@shboqu.com | Experto en la medición de la calidad del agua y el proyecto de tratamiento de agua.
Benchtop Conductivity/Dissolved Oxygen Meter
Conductivity/TDS/Salinity/Resistivity Modes:
• Multiparameter water quality meter is equipped with a large backlit LCD display.
• 1 to 5 points push-button calibration, automatically recognizes the calibration solutions.
• Selectable cell constant (K=0.1/1/10), reference temperature (20/25°C), TDS factor, linear
and pure water compensations, seawater and practical salinity measurement modes.
Dissolved Oxygen Mode:
• 1 or 2 points calibration using the air-saturated water or zero oxygen solution.
• Salinity and barometric pressure compensations ensure the reliable DO measurements.
Other Features:
• Automatic Temperature Compensation provides accurate reading over the entire range.
• Calibration Due Alarm prompts user to calibrate the meter regularly.
• Stability indicator shows when a measurement is recognized as stable.
• Auto-Hold feature senses and locks the measurement endpoint.
• Calibration report provides the details for checking the electrode performance.
• Setup menu allows setting the 13 parameters, including the number of calibration points,
stability criteria, temperature unit, auto-power off, etc.
• Reset feature automatically resumes all settings back to factory default options.
• Expanded memory stores and recalls up to 500 data sets.
• Stored readings can be transferred into the computer by USB communication interface.
| Model | MK904 |
| Conductivity | |
| Range | 0.01~20.00, 200.0, 2000µS/cm, 20.00, 200.0mS/cm |
| Accuracy | ±0.5% F.S |
| Resolution | 0.001, 0.01, 0.1, 1 |
| Calibration Points | 1 to 5 points |
| Calibration Solutions | 10µS/cm, 84µS/cm,1413µS/cm,12.88mS/cm,111.8mS/cm |
| Temperature Coefficient | 0.0~10.0%/°C |
| Compensation Modes | Linear or Pure water |
| Cell Constant | K=0.1, 1, 10 or Custom |
| Reference Temperature | 20°C or 25°C |
| TDS | |
| Range | 0~10.00, 100.0, 1000ppm, 10.00, 100.0ppt (Max. 200ppt) |
| Accuracy | ±1% F.S |
| Resolution | 0.01, 0.1, 1 |
| TDS Factor | 0.1~1.0 (Default 0.5) |
| Salinity | |
| Range | 0.00~80.00ppt, 0.00~42.00psu |
| Accuracy | ±1% F.S |
| Resolution | 0.01 |
| Measurement Modes | Practical salinity (psu) or Natural seawater (ppt) |
| Resistivity | |
| Range | 0.00~20.00MΩ |
| Accuracy | ±1% F.S |
| Resolution | 0.01, 0.1, 1 |
| Dissolved Oxygen | |
| DO Range | 0.00~20.00mg/L |
| Accuracy | ±0.2mg/L |
| Resolution | 0.1, 0.01mg/L, selectable |
| % Saturation of Oxygen | 0.0~200.0% |
| Accuracy | ±2.0% |
| Resolution | 0.1, 1% |
| Calibration Points | 1 or 2 points |
| Pressure Correction | 60.0~112.5kPa, 450~850mmHg |
| Salinity Correction | 0~50g/L |
| Temperature | |
| Range | 0~105°C, 32~221°F |
| Accuracy | ±0.5°C |
| Resolution | 0.1°C, 0.1°F |
| Calibration Points | 1 point |
| Calibration Range | Measured value ±10°C |
| General | |
| Temperature Compensation | 0~100°C, 32~212°F, Manual or Automatic |
| Data Hold | Manual or Auto-Endpoint |
| Stability Criteria | Low or High |
| Calibration Due Alarm | 1 to 31 days or Off |
| Reset Function | Yes |
| Memory | Stores up to 500 data sets |
| Output | USB communication interface |
| Connector | 6-pin mini plug |
| Display | LCD |
| Power | DC5V, using AC adapters, 220VAC/50Hz |
| Dimensions | 210(L)×188(W)×60(H)mm |
| Weight | 1.5kg |
Q: Are you trading company or manufacture?
A: Trading company with R&D capacity, holding share in the manufactories
Q: How about your goods quality?
A: 1. All running products comply with CE standard.
2. Independent quality inspection team, 100% testing before delivery.
3. Well-known third-party testing service available, such as SGS, BV and TUV etc.
Q: How about your service?
A: 1. Reply to any questions within 1 hours during working time.
2. Real-time feedback of production process and shipping information.
3. Contracted third-part maintenance company in more than 60 countries.
4. Life-long responsibility for all our products, big compensation for not well repaired products within the warranty period.
Q: Could you do OEM service?
A: Yes, all types of OEM service available.
Q: How long is your delivery time?
A: We have safety stock for around 60% of running products. 7 working days delivery time for stock goods, one for no stock products.
Q: How about your quality warranty?
A:2~5 years upon products features, please confirm the exactly warranty time of your interested products before order.
Q: What is your terms of payment?
A: T/T, Western Union, L/C, Credit Card etc. We prefer on-line order and payment.
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