Jensen DT-985, Manual

Page: 2 / 14

2
Introduction
This meter measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency
(electrical & electronic), Diode Test, and Continuity plus Thermocouple Temperature. It
features a waterproof, rugged design for heavy duty use. Proper use and care of this
meter will provide many years of reliable service.
Safety
This symbol adjacent to another symbol, terminal or operating device indicates that the
operator must refer to an explanation in the Operating Instructions to avoid personal
injury or damage to the meter.
This WARNING symbol indicates a potentially hazardous situation, which if not avoided, could
result in death or serious injury.
This CAUTION symbol indicates a potentially hazardous situation, which if not avoided, may
result damage to the product.
This symbol advises the user that the terminal(s) so marked must not be connected to a
circuit point at which the voltage with respect to earth ground exceeds (in this case) 1000
VAC or VDC.
This symbol adjacent to one or more terminals identifies them as being associated with
ranges that may, in normal use, be subjected to particularly hazardous voltages. For
maximum safety, the meter and its test leads should not be handled when these
terminals are energized.
This symbol indicates that a device is protected throughout by double insulation or reinforced
insulation.
PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY I
Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in which
measures are taken to limit the transient overvoltages to an appropriate low level.
Note – Examples include protected electronic circuits.
OVERVOLTAGE CATEGORY II
Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be supplied
from the fixed installation.
Note – Examples include household, office, and laboratory appliances.
OVERVOLTAGE CATEGORY III
Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations.
Note – Examples include switches in the fixed installation and some equipment for industrial
use with permanent connection to the fixed installation.
OVERVOLTAGE CATEGORY IV
Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation.
Note – Examples include electricity meters and primary over-current protection equipment
WARNIN
G
CAUTIO
N
MA