Microprocessor-based internal circuit for maximum possible accuracy and additional special functions.
Extra-large, dual-function LCD display with adjustable contrast - good visibility from different angles.
Compact housing with high mechanical resistance - easy handling and portability.
Recording of maximum, minimum and average reading with RECALL function.
DATA HOLD - memory of current reading.
Automatic switch off to increase battery life.
RS-232 interface and battery status indicator.
Measurements: pH, voltage (mV) and temperature.
Choice of temperature measurement units (ºC, ºF).
Simultaneous reading of pH and temperature values.
High input impedance - minimizing measurement error.
Wide range of automatic and manual temperature compensation. Manual compensation value read directly on the display.
Optional temperature probe for automatic compensation or temperature measurement.
Front panel potentiometers SLOPE (PH4) and CAL. (PH7) for one- or two-point calibration of the pH range. Calibration data stored in non-volatile electronic memory.
Wide range of applications: paper and food industry, electroplating plants, quality control and water treatment, fish hatcheries, aquariums, photo laboratories, education.

Measuring circuit	Single-chip circuit with LSI microprocessor
Display	Dual-function, 13 mm (0.5") LCD display with adjustable contrast
Measuring ranges	pH: 0 to 14 pH mV: 0 to 1999 mV temp.: 0 to 65 °C (32 to 150 °F)
Input imp.	1012W
Temperature compensation for pH range	Manual: 0 to 100 °C, set byfront panel button; Automatic: with optional probe temperature 0÷65 °C
pH rangecalibration	Precision multi-turn SLOPE potentiometers (pH 4) and CAL. (pH 7) on the front panel
Data output	RS-232 serial interface
Functions: Data Hold and Memory Recall	"Freeze" reading on the display. Memory - with the possibility of recall - of the value of the maximum, minimum and average reading.
Powerswitch	Automatic shutdown of the instrument to increase the life of the power supply battery. Manual button power off button
Overflowindication	Displayed symbol "-------"
pH probe	Any composite pH probe with BNC cable.
Operating temp.	0 to 50 °C
Humidity	Maximum 80 % RH
Sampling	every approx. 0.8 seconds
Power supply	9V heavy-duty battery type MN 1604 (PP3) or equivalent.
Current consumption	approx. 5.7mA
Weight and dimensions	270g; 180 x 72 x 32 mm

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