About this item
These compact, portable meters measure dissolved oxygen and temperature using a smart optical sensor. Values are transmitted from and to the sensor in modified digital RS485 format. Ideal for field measurements.
- IP 67 waterproof housing, segmented LCD showing DO and temperature values simultaneously
- 50 or 250 data sets reviewable memory
- Sensor cap coefficients to be manually entered into instrument by end user; sensor cap change after 12 to 16 months
- 100 h battery life; low battery indicator; auto-shut off function (after 30 min of non use)
- Electrode offset recognition; auto-lock and hold of readings on display
Additional functions of DO 220 M:
- Extended memory capacity (250 data sets)
- Waterproof USB port for transferring data to a PC (no software required)
- Real time clock for saved data
- Recalibration reminder (selectable from 0 to 60 days)
Warranty: 3 years for instruments and 6 months for electrodes/probes/cables.
Some Products May Appear Restricted
To ensure a smooth and speedy checkout, please log in to your account. Some items may show as restricted simply because you're not logged in.
If you do not have an account, you can register using our registration webform (https://www.avantorsciences.com/us/en/login/register)
If you're still seeing restrictions after logging in, certain products—like chemicals or medical devices—require additional account verification steps to be able to place an order. Some items may additionally require a specific license or customer documentation; additional documentation will be requested for these items prior to shipment.
Specifications
- Catalog No:
- VWRI664-0226
- VWRI664-0225
- VWRI664-0227
- VWRI664-0168
- VWRI664-0170
- VWRI664-0169
- Model:
- DO 220 M
- DO 220 M
- DO 220 M
- DO 220
- DO 220
- DO 220
- DO accuracy:
- ±1,5% of the reading or ±1,5 % (air saturation), whichever is greater
±1,5% of the reading or ±0,15 ppm, whichever is greater - ±1,5% of the reading or ±1,5 % (air saturation), whichever is greater
±1,5% of the reading or ±0,15 ppm, whichever is greater - ±1,5% of the reading or ±1,5 % (air saturation), whichever is greater
±1,5% of the reading or ±0,15 ppm, whichever is greater - ±1,5% of the reading or ±1,5 % (air saturation), whichever is greater
±1,5% of the reading or ±0,15 ppm, whichever is greater - ±1,5% of the reading or ±1,5 % (air saturation), whichever is greater
±1,5% of the reading or ±0,15 ppm, whichever is greater - ±1,5% of the reading or ±1,5 % (air saturation), whichever is greater
±1,5% of the reading or ±0,15 ppm, whichever is greater
- DO concentration:
- 0 - 20 mg/L
- 0 - 20 mg/L
- 0 - 20 mg/L
- 0 - 20 mg/L
- 0 - 20 mg/L
- 0 - 20 mg/L
- DO concentration resolution:
- 0,1%; 0,01 mg/L
- 0,1%; 0,01 mg/L
- 0,1%; 0,01 mg/L
- 0,1%; 0,01 mg/L
- 0,1%; 0,01 mg/L
- 0,1%; 0,01 mg/L
- DO saturation:
- 0 - 200 %
- 0 - 200 %
- 0 - 200 %
- 0 - 200 %
- 0 - 200 %
- 0 - 200 %
- DO barometric pressure range:
- 375 - 825 mmHg
- 375 - 825 mmHg
- 375 - 825 mmHg
- 375 - 825 mmHg
- 375 - 825 mmHg
- 375 - 825 mmHg
- DO calibration:
- Saturated air; 1 or 2 points with a zero % value
- Saturated air; 1 or 2 points with a zero % value
- Saturated air; 1 or 2 points with a zero % value
- Saturated air; 1 or 2 points with a zero % value
- Saturated air; 1 or 2 points with a zero % value
- Saturated air; 1 or 2 points with a zero % value
- Temperature range:
- 0...50 °C
- 0...50 °C
- 0...50 °C
- 0...50 °C
- 0...50 °C
- 0...50 °C
- Temperature resolution:
- 0,1 °C
- 0,1 °C
- 0,1 °C
- 0,1 °C
- 0,1 °C
- 0,1 °C
- Temperature accuracy:
- ±0,3 °C
- ±0,3 °C
- ±0,3 °C
- ±0,3 °C
- ±0,3 °C
- ±0,3 °C
- Display:
- Segmented LCD
- Segmented LCD
- Segmented LCD
- Segmented LCD
- Segmented LCD
- Segmented LCD
- Outputs:
- Micro USB
- Micro USB
- Micro USB
- -
- -
- -
- Power supply:
- One 9 V battery
- One 9 V battery
- One 9 V battery
- One 9 V battery
- One 9 V battery
- One 9 V battery
- Compliance:
- IP 67
- IP 67
- IP 67
- IP 67
- IP 67
- IP 67
- Data logging capacity:
- 250 data sets
- 250 data sets
- 250 data sets
- 50 data sets
- 50 data sets
- 50 data sets
- W×D×H:
- 78×37×184 mm
- 78×37×184 mm
- 78×37×184 mm
- 78×37×184 mm
- 78×37×184 mm
- 78×37×184 mm
- Weight:
- 0,272 kg
- 0,272 kg
- 0,272 kg
- 0,272 kg
- 0,272 kg
- 0,272 kg