Purge Stabilization Flow Cell Specifications
| Model No. | MP20 (standard) MP20D (w/ real time clock / data download) MP20DT (w/ real time clock / data download / turbidity) (U.S. Patent Number 6,415,659) |
| Dimensions | 18.5 in. x 15 in. x 6.5 in. (47 x 38 x 17 cm) |
| Weight | 14 lbs. (6.4 kg) |
| Storage | 100 data points (200 opt.) |
| Stabilization | Purge Scan™ technology (U.S. Patent Number 6,415,659) |
| Case Material | structural resin |
| Keypad | 5 keys |
| Meter Specifications: | |
| Display | 3.5 in. (9 cm) |
| Weight | 2.1 lbs (1 kg) |
| Memory | 100 data frames (200 opt.) |
| Rating | Waterproof NEMA 6 [IP67] |
| Power | 3 "C" batteries |
| Battery Life | 12 hours |
| Temperature | 23-122°F (-5 - 50°C) |
| Cable | 6 ft. (1.83 m) |
| Flow Cell Specifications: | |
| Volume | 175 mL |
| Material | rigid urethane |
| Fitting Type | soft-tube "clamp-free" |
| Fitting Size(s) | Inlet: 1/4 in. I.D. x 3/8 in. O.D. Outlet: 3/8 in. I.D. x 1/2 in. O.D. |
| Venting Modes | horizontal and vertical |
| Sonde Connection | bayonet-style twist mount |
| Sonde Specifications: | |
| Size | 3 in. x 9 in. (8 x 23 cm) |
| Weight | 1.3 lbs. (0.6 kg) |
| Typical Sensor Performance Specifications: | |||
| Range | Accuracy | Resolution | |
| Temperature | -5 - 50°C (23 - 122°F) | ± 0.2°C (0.36°F) | 0.01°C (0.018°F |
| DO | 0 to 20 mg/l | ± 0.2 mg/l | 0.01 mg/l |
| 0 to 100 mS/cm | ±1% of reading ± 1 count | 4 Digits | |
| pH | 2 to 12 units | ± 0.2 units | 0.01 units |
| ORP | -999 to 999 mV | ± 20 mV | 1 mV |
| Turbidity (MP20DT Only) |
0 to 1,000 NTU | ± 5% of reading ± 1 NTU | 1 NTU |
| Salinity* | 0 to 70 PSS | ± 1% of reading ± 1count | 0.01 PSS |
| *Calculated | |||
| Purge Scan Specifications: | |
| Parameter Stabilization range criteria* | pH ± .2 units DO ± 0.2 mg/l Conductivity ± 0.020 mS/cm ORP ± 20 millivolts Turbidity ± 1 NTU |
| *NOTE: These are default ranges; settings are adjustable to meet site specifications. | |
| Stabilization basis | 3 consecutive readings of selected parameters (one or more of above 5) within above limits, at time interval selected, from 1 to 9 minutes. For example, if 2 minutes is selected, then stabilization would be signaled when 3 consecutive 2-minute intervals showed in-range readings at the end of each interval, requiring 6 minutes. |
|
Elapsed time since Purge Scan initiated shows at the bottom of the screen. Stabilization of purge water quality is signaled visually and audibly when 3 consecutive readings of selected quality parameters (one or more of above 5) fall within the selected ranges. The time interval between readings is selected from 1 to 9 minutes. For example, if 2 minutes is selected as the interval between stabilization readings , then stabilization would be signaled when 3 consecutive 2-minute intervals showed in-range readings at the end of each interval, requiring 6 total minutes of stabilized purge water quality. The elapsed time since Purge Scan was initiated is displayed at the bottom of the screen. Full data sets are stored at time 0, every 5 minutes, and the 3 consecutive readings which satisfy the stabilization criteria. |
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| pH 4.0 storage solution: | |
| The system shall include a plastic calibration/storage cup and a provision for storing the sonde, with all sensors installed, in water, alcohol or KCl storage solution. | |
See the Complete Sampling Catalog