Technical Specifications:
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Erma, P-25, PH-8424,
Portbale Ph/ORP Meter
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Range
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pH
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-2.00 to 16.00 pH
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ORP
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±699.9 mV; ±1999 mV
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Temperature
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-20.0 to 120.0°C / -4.0 to 248.0°F
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Resolution
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pH
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0.01 pH
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ORP
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0.1 mV; 1 mV
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Temperature
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0.1°C / 0.1°F
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Accuracy
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pH
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±0.01 pH
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ORP
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±0.2 mV; ±1 mV
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Temperature
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±0.4°C / ±0.8°F
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Calibration
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pH
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Automatic
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Offset
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±1 pH
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Slope
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75 to 110%
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Input Impedance
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1012 Ohm
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Temperature Compensation
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Automatic, -20 to 120°C (-4 to 248°F) or manual without
temperature probe
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pH Electrode
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pH electrode with BNC connector and 1 m (3.3’) cable (included)
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Temperature Probe
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stainless steel temperatures probe with 1 m cable (included)
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Battery Type / Life
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9V / approximately 150
hours of continuous use; auto-off after 20 minutes of non-use or disabled
(user-selectable)
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Environment
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0 to 50°C (32 to 122°F); RH max 100%
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Dimensions
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164 x 76 x 45 mm (6.5 x 3.0 x 1.8″)
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Weight
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180 g
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Applications
This instrument is able to perform pH, ORP and temperature measurements with a high degree of accuracy and fast response.
Calibration is automatic at one or two points with three memorized buffer values (pH 4.01, pH 7.01 and pH 10.01). Once the instrument has been calibrated, the buffer values used during calibration are displayed with tags on the LCD. This feature keeps users informed of the current calibration and helps to avoid taking measurements that are out of range.
Exchange the pH probe for an ORP probe to obtain ORP readings in the mV range.
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