Description
Features:
- High accuracy at low ranges (below 0.05 NTU)
- Two, three or four point calibration
- USB and RS232 PC connectivity
- Log up to 200 records
- GLP Features
- User friendly, backlit display with guidance codes
- Battery % on startup
- Continuous current time on display
The new HI 98703 portable Turbidity Meter utilizes an EPA compliant tungsten light source and state-of-the-art optical system that allows consistently reliable and accurate measurements for turbidity. The unit meets and exceeds the USEPA Method 180.1 for wastewater and Standard Method 2130 B for drinking water. The instrument's EPA compliance reading mode rounds readings to meet EPA reporting requirements. Users will appreciate the accuracy and sensitivity of this instrument, particularly at very low turbidity levels.
Turbidity is measured up to 1000 NTU. Depending on the measured sample and required accuracy, users can select normal measurement, continuous measurement or signal averaging. For advanced field operations, the HI 98703 has Fast Tracker™ and can be equipped with HANNA's Tag Identification System (TIS) which allows users to record the time and location of a specific measurement or series of measurements. Logged data, up to 200 measurements, can be downloaded to a PC through either USB or RS232 connections using HANNA's optional HI 92000 software.
A two, three or four-point calibration is available using pre-set or user defined standards. Frequent calibration isn't necessary as the system compensates for variations in the intensity of the light source. The instruments' Good Laboratory Practice functions allow traceability of calibration conditions including the time, date and last calibration points. At startup, the meter displays the percentage of remaining battery life. A 'low battery' warning message is also displayed on the LCD to avoid unexpected battery failure. This instruments is equipped with backlighting. The current date and time can be displayed on the LCD.
Specifications:
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Range
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0.00 to 9.99; 10.0 to 99.9 and 100 to 1000 NTU
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Range Selection
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Automatic
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Resolution
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0.01 NTU from 0.00 to 9.99 NTU; 0.1 NTU from 10.0 to 99.9 NTU; 1 NTU from 100 to 1000 NTU
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Accuracy
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±2% of reading plus 0.02 NTU
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Repeatability
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±1% of reading or 0.02 NTU, whichever is greater
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Stray Light
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< 0.02 NTU
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Typical EMC Deviation
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±0.05 NTU
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Light Detection
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Silicon Photocell
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Method
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Ratio Nephelometric Method (90°), ratio of scattered and transmitted light; Adaptation of the USEPA Method 180.1 and Standard Method 2130 B.
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Measuring mode
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Normal, Average, Continuous
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Turbidity Standards
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1, 10, 100 and 750 NTU
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Calibration
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Two, three or four-point calibration
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Light Source
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Tungsten filament lamp
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Lamp life
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Greater than 100,000 readings
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Display
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60 x 90 mm LCD with back light
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Logging Memory
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200 records
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Serial Interface
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USB 1.1 or RS 232
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Environment
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To 50°C (122°F); max 95% RH non-condensing
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Power Supply
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(4) 1.5V AA alkaline batteries or AC adapter
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Auto Shut-off
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After 15 minutes of non-use
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Dimensions
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224 x 87 x 77 mm (8.8 x 3.4 x 3.0)
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Weight
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512 g (18 oz.)
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Supplied With:
- HI 98703-01 turbidity meter (115V)
- Sample cuvettes and caps (5)
- HI 98703-11 calibration cuvettes
- HI 93703-58 silicone oil
- cuvette cleaning cloth
- batteries
- AC adapter
- instruction manual
- rugged carrying case
- Instrument Quality Certificate
- HI 92000 tag holders and tags (5)