B&K Precision 393 User Manual
Model: 392 and 393
Handheld Digital
Multimeters
USER MANUAL
2
Safety Summary
The following safety precautions apply to both
operating and maintenance personnel and must
be observed during all phases of operation,
service, and repair of this instrument. Before
applying power, follow the installation
instructions and become familiar with the
operating instructions for this instrument.
If this device is damaged or something is missing,
contact the place of purchase immediately.
This manual contains information and warnings
that must be followed to ensure safe operation as
well as maintain the meter in a safe condition.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of
flammable gases or fumes. Operation of any
electrical instrument in such an environment
constitutes a definite safety hazard.
KEEP AWAY FROM LIVE CIRCUITS
Instrument covers must not be removed by
operating personnel. Component replacement
and internal adjustments must be made by
qualified maintenance personnel. Disconnect the
power cord before removing the instrument
covers and replacing components. Under certain
conditions, even with the power cable removed,
dangerous voltages may exist. To avoid injuries,
always disconnect power and discharge circuits
before touching them.
DO NOT SUBSTITUTE PARTS OR MODIFY THE INSTRUMENT
Do not install substitute parts or perform any
unauthorized modifications to this instrument.
Return the instrument to B&K Precision for
service and repair to ensure that safety features
are maintained.
3
WARNINGS AND CAUTIONS
WARNING and CAUTION statements, such as the
following examples, denote a hazard and appear
throughout this manual. Follow all instructions
contained in these statements.
A WARNING statement calls attention to an
operating procedure, practice, or condition,
which, if not followed correctly, could result in
injury or death to personnel.
A CAUTION statement calls attention to an
operating procedure, practice, or condition,
which, if not followed correctly, could result in
damage to or destruction of part or all of the
product.
WARNING
To avoid potential fire or shock hazard:
• Disconnect all leads, power adapter, and USB cable before
opening the battery cover.
• Do not turn on the instrument while the battery cover is
removed.
• Use only the included insulated test leads and power
adapter supplied with the instrument.
• Observe all markings and ratings on the instrument before
connecting to the instrument.
• While making measurements, verify that the performance
ratings of instruments and accessories that are used meet
the correct safety levels of the instrument.
• Do not insert metal objects into any of the connectors.
• Use the meter only as specified in this manual
• Test the meter on a known voltage before using it to
determine if hazardous voltage is present.
• Never ground yourself when taking electrical
measurements.
4
Compliance Statements
This product is subject to
Disposal of Old Electrical & Electronic Equipment (Applicable
in the European Union and other European countries with
separate collection systems)
Directive 2002/96/EC of the
European Parliament and the
Council of the European Union
on waste electrical and
electronic equipment (WEEE) ,
and in jurisdictions adopting
that Directive, is marked as
being put on the market after
August 13, 2005, and should
not be disposed of as unsorted
municipal waste. Please utilize
your local WEEE collection
facilities in the disposition of
this product and otherwise
observe all applicable
requirements.
5
CE Declaration of Conformity
The power supply meets the requirements of 2006/95/EC Low
Voltage Directive and 2004/108/EC Electromagnetic
Compatibility Directive with the following standards.
Low Voltage Directive
- EN 61010-1
Safety requirements for electrical
equipment for measurement, control, and
laboratory use-Part 1: General
requirements
EMC Directive
- EN 61326-1: 2006
6
Safety Symbols
CATI
Category I overvoltage conditions.
supply at a standard wall outlet or similar sources.
CATIII
Category III overvoltage conditions.
installation of a building.
CATIV
Category IV overvoltage conditions.
power for a given building.
Storage Humidity
0 – 85% R.H.
Storage Environment
-20 °C to +70 °C
Pollution degree
Pollution degree 2
Caution, refer to the operating user manual for
warning information to avoid hazard or personal
injury and prevent damage to instrument.
Electrical Shock hazard.
CATII
Measurement instruments whose measurement
inputs are not intended to be connected to the
mains supply. The voltages in the environment
are typically derived from a limited-energy
transformer or a battery.
Category II overvoltage conditions.
Measurement instruments whose measurement
inputs are meant to be connected to the mains
Measurement instruments whose measurement
inputs are meant to be connected to the mains
Measurement instruments whose measurement
inputs are meant to be connected to the source of
Environmental Conditions
The instrument may be operated in the following environment.
Operating Environment
0 °C to 40 °C
Measurement Category CAT III, CAT IV
7
Table of Contents
Safety Summary .......................................................................... 3
1 General Information ............................................................. 9
1.1 Product Overview ......................................................... 9
1.2 Package Contents ......................................................... 9
1.3 Front Panel Overview ................................................. 10
Front Panel Description ................................................... 11
2 Getting Started ................................................................... 13
2.1 Using the Digital Multimeter ...................................... 13
2.2 DC and AC Voltage Measurements ............................ 13
2.3 DC and AC Current Measurements ............................ 14
2.4 Make Resistance Measurements ............................... 16
2.5 Make Diode Measurements ....................................... 17
2.6 Continuity Test ........................................................... 17
2.7 Make Capacitance Measurements ............................. 18
2.8 Make Temperature Measurements ........................... 19
2.9 Make Frequency Measurements ................................ 20
2.10 Percent Duty Cycle Measurements .......................... 20
2.11 Auto Power Off ......................................................... 21
3 PC Communication ............................................................. 21
4 Specifications ..................................................................... 22
10 Maintenance .................................................................... 28
Cleaning ................................................................................ 28
BATTERY AND FUSE REPLACEMENT ..................................... 28
SERVICE INFORMATION ............................................................ 29
LIMITED THREE-YEAR WARRANTY............................................. 30
8
1 General Information
1.1 Product Overview
The B&K Precision 392 and 393 handheld digital multimeters
provide standard measurement functions, which include AC and
DC voltage, AC and DC current, resistance, capacitance, diode,
and continuity.
Features:
• 60,000 Count display resolution
• DC Voltage measurement up to 1000 V
• AC Voltage measurement up to 750 V
• AC and DC Current up to 20 A
• USB interface for remote communication (model 393)
1.2 Package Contents
Please inspect the instrument mechanically and electrically
upon receiving it. Unpack all items from the shipping carton,
and check for any obvious signs of physical damage that may
have occurred during transportation. Report any damage to the
shipping agent immediately. Save the original packing carton for
possible future reshipment. Every multimeter is shipped with
the following contents:
• 1 x 392 or 393 Digital Multimeter
• 1 x 9 V Battery (inside battery compartment)
• 1 x User Manual
• 1 x Pair of TL 35A DMM test leads
• 1 x USB cable (model 393 only)
• 1 x CD utility software (model 393 only)
• 1 x Replacement fuse (500 mA)
• 1 x K-Type thermocouple
• 1 x Certificate of Compliance card
• 1 x Accessories pamphlet
9
16
11
10
9
8
7
6
2
1
(6000 or RS232)
15
14
13
12
5
4
3
cal>2s
±
+
+
ns
mV
+
V
+
mV
MAX 400mA
TRUE RMS AC+DC
Digital Multimeter
30V
MAX
%
AUTO POWER OFF
CAT.III
V
Ω
Hz %
µ
SHIFT
C
F
K-Type
+
CATIV 600V
0
10 20
50
30
40
60
HOLD
MIN/MAX
RANGE
REL
COM
mAµA20A
20A/30sec
FUSED
MAX
FUSED
Ω
V
750V
MAX
1000V
CATIII 1000V
1.3 Front Panel Overview
Figure 1 - Front Panel View
10
Loading...