General Catalogue Chemistry - BECO Internacional LTDA.
General Catalogue Chemistry - BECO Internacional LTDA.
General Catalogue Chemistry - BECO Internacional LTDA.
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measuring equipment- pH<br />
pH meters and accessories<br />
Digital pH meter<br />
666 450<br />
LEYBOLD DIDACTIC offers a new, user-friendly device with automatic<br />
calibration and temperature compensation.<br />
The information provided in the display and via the LEDs guides the user<br />
easily through all functions.<br />
Special features:<br />
· Measurement of pH (0.00 ... 14.00), potentials (0…2000 mV) and<br />
temperature (-50 … +200 °C)<br />
· Automatic/manual calibration (selectable)<br />
The automatic calibration of the pH probe is carried out with calibration<br />
buffers at pH 7 and pH 4 or 9 (automatic sensing). The instrument<br />
prompts the user for the appropriate buffer solution. For manual<br />
calibration, it is possible to calibrate with any buffer solution.<br />
· Automatic/manual temperature compensation (selectable)<br />
An NTC or Pt 100 sensor is additionally connected for automatic<br />
temperature compensation. The measured temperature can be shown in<br />
the display. In "manual temperature compensation" mode, the<br />
temperature is entered via the display and the keypad.<br />
· Connection of any pH or redox electrode equipped with 13 mm DIN plug.<br />
· Simple retrofitting of the data output module for connecting a printer or<br />
computer, for convenient registration, display, storage and processing of<br />
measured values; all functions can be controlled via the computer.<br />
196 LEYBOLD DIDACTIC · GENERAL CATALOGUE CHEMISTRY<br />
667 420<br />
Display:<br />
7 segment numeric LED, 3 1 / 2 digits,<br />
26 mm high<br />
14 segment alphanumeric LED, 2 digits,<br />
14 mm high<br />
Inputs:<br />
1 pH standard socket, 13 mm dia.,<br />
1 DIN socket, 8 pin<br />
Measurement ranges:<br />
pH: 0.00 ... 14.00; 0 … 1000 mV<br />
NTC: -20 ... + 120 °C<br />
Pt 100: -50 ... +200 °C<br />
Resolution: 0.01 pH; 1 mV; 0.1 °C<br />
Measurement accuracy:<br />
pH: ±0.02 pH<br />
NTC: ±0.1°C or ±0.3 % of measured<br />
value (>70 °C)<br />
Pt100: ±0.2°C<br />
Input resistance: 1012 �<br />
Temperature compensation:<br />
0 ... 140 °C (automatic or manual)<br />
Slope matching: 40...80 mV (pH)<br />
Zero point matching: pH 5 ... pH 9<br />
Analog output: 12 bit conversion, 1 digit �1 mV<br />
Data outputs: via plug-in module (data output<br />
module, > 666 211), for retrofitting<br />
· Serial interface (RS 232)<br />
· Parallel interface (Centronics)<br />
Dimensions: 200 x 297 x 160 mm<br />
Weight: 1.5 kg (> 666 451)<br />
667 420<br />
666 450<br />
Benchtop apparatus<br />
CPS version
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