1
1. Specifications
1.1 General Specifications
Circuit
Custom microprocessor LSI
Display
LCD size : 58 mm x 34 mm.
Measurement
pH / Oxidation Reduction Potential (ORP)
Conductivity/Total Dissolved Solids (TDS)
Dissolved Oxygen (DO)
Temperature
Sampling Time of Data Log-
ger
1 second to 8 hours 59 minutes and
59 seconds
Data Hold
Freeze the display reading.
Memory Recall
Maximum and Minimum value
Power off
• Auto shut off saves battery life; manual
shut off possible by pressing “Power” button
for 2 seconds
• Default changeable: auto power off/
manual power off
• With default set at auto power off, power
will off automatically after 10 minutes if no
button is pressed.
Display lapse time
Approx. 1 second.
Data Output
RS 232 PC serial interface
Operating Temperature
0 to 50 °C (32 to 122°F) for the instrument
(not including probes)
Operating Humidity
Less than 80% rel. humidity
Power Supply
• DC 1.5 V with 4 batteries (mignon size;
Type AA)
• DC 9 V by adapter input
Power Current
• Operation: approx. DC 28 mA
• Clock (power off): approx. DC 1 µA
Содержание SensoDirect 150
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