PICO ADC-20 Kurzanleitung Seite 6

USB Data Logger
2.2 Maximum input ranges
Observe all terminal ratings and warnings marked on the product.
The full scale measurement range is the maximum voltage that the instrument can accurately
measure. The overvoltage protection range is the maximum voltage that will not damage the
instrument.
Product Full-scale input range
ADC-20 & ADC-24
DrDAQ
®
PicoLog 1000 Series
PicoLog CM3
PT-104
TC-08
* Maximum input range on Scope input. Other inputs have different maximum input ranges: see
the USB DrDAQ User's Guide for details.
To prevent electric shock, do not attempt to measure voltages outside of the specified full
scale measurement range.
Signals exceeding the voltage limits in the table below are defined as "hazardous live" by
EN 61010. To prevent electric shock, take all necessary safety precautions when working on
equipment where hazardous live voltages may be present.
Signal voltage limits of EN 61010
±70 V DC
2
Overvoltage protection
±2.5 V ±30 V
±10 V* ±30 V
0 to 2.5 V ±30 V
±1 V AC RMS ±30 V
0 to 2.5 V ±30 V
±70 mV ±30 V
WARNING
33 V AC RMS ±46.7 V pk max.
Copyright © 2005–2018 Pico Technology Ltd. All rights reserved.
Pico data loggers are only designed to measure or contact low voltages as defined by the
EU Low Voltage directive. To prevent electric shock, do not attempt to measure or contact
voltages outside the signal voltage limits of EN 61010 or the specified full scale measurement
range, whichever is lower.
To prevent injury or death, do not allow the data logger to connect or make contact with the
mains (line power).
Take care when using temperature converters near mains equipment. Make sure the sensor
is not accidentally connected to a mains voltage: this may cause damage to the converter or
your computer, and your computer chassis may become live.
Exceeding the overvoltage protection range on any connector can cause permanent damage
to the data logger and other connected equipment.
2.3 Grounding
The data logger's ground connection through the USB cable is for measurement purposes
only. The data logger does not have a protective safety ground.
Never connect the ground input (chassis) to any electrical power source. To prevent personal
injury or death, use a voltmeter to check that there is no significant AC or DC voltage between
the data logger ground and the point to which you intend to connect it.
Applying a voltage to the ground input is likely to cause permanent damage to the data logger,
the attached computer, and other equipment.
To prevent measurement errors caused by poor grounding, always use the high-quality USB
cable supplied with the data logger.
2.4 Environment
To prevent injury or death, do not use in wet or damp conditions, or near explosive gas or
vapor.
To prevent damage, always use and store your data logger in appropriate environments.
Quick Start Guide
WARNING
CAUTION
WARNING
CAUTION
WARNING
CAUTION
DO112-8