PX 120 and PX 110
TRMS three- and single phase
digital wattmeters
For measurements on-site or in a laboratory,
a new concept: the digital power meter!
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•DC or AC TRMS networks: balanced single-phase (PX 110) or three-phase (PX 120)
•Voltage, current, active/reactive/apparent powers and power factor measurements
•High degree of sensitivity
•Simple and quick implementation with direct access keys
•Numerous automatic functions: current range switching, HOLD,
filtering, starting current, etc.
•Excellent readability: 3 quantities displayed simultaneously with
a digit height of 14 mm
•Digital transmissions protected by infrared communication interface
•Mains power supply (optional)
Tottering contacts are a thing of
the past, the connection is now
performed merely by a mag-
netised optical head which is
simply placed on the front
panel of the
instrument.
Given their wide measuring range and their
sensitivity, the PX 120 and PX 110 are
intended for both general teaching and
vocational training; examples of which are
installers and company maintenance
departments. To be more precise, their
ability to measure RMS values in AC + DC
(or TRMS) enables them to carry out
measurements in the 4 quadrants on sig-
nals which are disturbed and polluted by
harmonics. For these applications the
PX 120 and 110 go well beyond the
functions generally available on traditional
wattmeters. That is why we should be
talking about a new breed of instrument:
the power meter!
The only difference between the two mod-
els is that the PX 120 measures powers
using the three-phase three balanced wire
system, whereas the PX 110 is reserved for
single-phase networks.
Smoothing function
The SMOOTH function is very useful from
the moment the measurement in question
is an unstable one. It filters the
measurements with a time constant of
approximately 3 seconds. Display stability
then goes from 5 counts to 2 counts.
Exceptional readability
In addition to a particularly large digit size
(14 mm), the readout unit of the PX 120
and PX 110 has a display capacity of
9,999 counts (4 digits) on three lines. The
user thus simultaneously displays three
values. Two different tables then suffice to
display all the quantities measured by the
instruments.
This digital display is supplemented by
different symbols which, at any moment,
indicate the operating mode used, the
units of each quantity or the state of the
battery.
Protected digital
link and software
The PX 120 and 110 have an infrared digital
link, thus making it easier to put the con-
nection into place. Moreover, this trans-
mission mode guarantees the user
improved safety; besides, the PX 120 and
110 comply with the IEC 61010-1 standard
(Category III - 600 V - Pollution level 2).
A processing software package then
enables different quantities to be
displayed on the screen of a PC, screen
print-outs to be obtained, and even
measurement files to be transferred to a
spreadsheet and stored.
User comfort and sturdiness
Their casing reinforced with an elastomer
mould gives these instruments an excellent
handholding capability and a sturdiness
which is second to none.
In the event of it being used on a table, a
stand allows the instrument to be propped
up at an angle of 30°, thus making it easier
to read the results. This stand is retracted
into its housing on the back of the casing
when measurements are carried out on site.
Easy implementation
Although they offer elaborate functions, the
PX 120 and PX 110 are very simple to
implement. Each of the five (PX 110) or six
(PX 120) keys corresponds to a single
clearly identifiable function. The latter is
then accessible via a single press of the
key. Finally, the automatic change of range
means that the user avoids having to carry
out any adjustments. The instrument can
be powered by batteries or the mains
power supply.
Starting current
There are loads, such as engines, some
heating resistors or lighting systems which,
when started up, cause a considerable
rush of current. Although they last only a
short time, these currents can trigger
the safety devices or even damage an
installation. To counter this, the PX 120
and PX 110 are provided with the INRUSH
function, which consists
in measuring the
maximum value of the
samples over a half-
period (with this value
being maintained
until a new and
higher value is
measured).
PX 120 and PX 110: TRMS three- and single
phase digital wattmeters
Accessories and information required for ordering
Accessories included
Basically, each wattmeter is delivered with 2 voltage cables (1 red, 1 black),
two 20 A current cables, 2 test probes (1 red, 1 black), 6 batteries, a verification
certificate and an operating manual.
Accessories available as optional extras
HX0011 Wattmeter switch
HX0012 Multiratio AC transformer (10, 15 and 30 A)
HX0013 Data acquisition and processing software package*
for PX 120 and PX 110 wattmeter
HX0021 Mains power supply
* Includes the software package on CD and the RS 232 optical lead.
To order
PX0120 DC/AC three-phase three balanced wire digital wattmeter
PX0110 DC/AC single-phase digital wattmeter
More than a wattmeter,
a power meter!
Multilingual data acquisition
and processing software
package.
Display kept visible
Smoothing mode
Communication mode
Balanced three-phase
Battery rundown
Units
Starting current mode
Power factor
Owing to their stand, the PX 120 and PX 110
are as much at ease on a table as in your
hand.
With the 73 x 54.3 mm LCD display, the user knows what
the situation is at a glance. The battery rundown indicator
light warns him when the period of autonomy is down to
one hour.
906 211 012 - Ed. 2 - VS 1/02
Network type
single-phase and three-phase 3 balanced wire (T3FE)
Single-phase
Number of counts 3 lines of 4 digits (14 mm) 3 lines of 4 digits (14 mm)
Bandwidth DC to 1 kHz DC to 1 kHz
Active power
Range 10 W to 1 kW – 1 kW to 6 kW 10 W to 1 kW – 1 kW to 6 kW
Resolution 0.1 W – 1 W 0.1 W – 1 W
Basic AC / DC accuracy 1.5% R ± 2 digits / 2.5% R ± 5 digits 1.5% R ± 2 digits / 2.5% R ± 5 digits
Apparent/reactive power*
Range 10 to 1 k – 1k to 6 k 10 to 1 k – 1k to 6 k
Resolution / Basic accuracy VA 1.5% R ± 2 digits / 1% R ± 2 digits 1.5% R ± 2 digits / 1% R ± 2 digits
Resolution / Basic accuracy VAR 2% R ± 2 digits 2% R ± 2 digits
Power factor
Range 1.00 1.00
Resolution 0.01 / 3% R ± 2 digits 0.01 / 3% R ± 2 digits
Voltage
Range 0.5 to 600 V RMS 0.5 to 600 V RMS
Resolution 100 mV 100 mV
Basic AC/DC accuracy 0.5% R ± 2 digits / 1% R ± 3 digits 0.5% R ± 2 digits / 1% R ± 3 digits
Input impedance 1 MΩ1 MΩ
Current
Range 10 mA to 2 A - 2 A to 10 A RMS 10 mA to 2 A - 2 A to 10 A RMS
Resolution 1 mA – 10 mA 1 mA – 10 mA
Basic AC/DC accuracy 0.7% R ± 5 digits / 1.5% R ± 5 digits 0.7% R ± 5 digits / 1.5% R ± 5 digits
Starting current
Range 5 A – 65 A (peak) 5 A – 65 A (peak)
Resolution / Accuracy 100 mA / 10% R ± 2 digits 100 mA / 10% R ± 2 digits
TECHNICAL CHARACTERISTICS PX 120 PX 110
Interfaces and software yes yes
Operating temperature 0 to 50°C 0 to 50°C
Storage temperature -40 to 70°C -40 to 70°C
Power supply 6 batteries of 1.5 V (LR6) / mains 6 batteries of 1.5 V (LR6) / mains
Autonomy 40 hours 40 hours
Dimensions (depth x length x height) 60 x 108 x 211 mm 60 x 108 x 211 mm
Weight 835 g 835 g
IEC 61010 safety standard 600 V, Cat. III, pollution level 2 600 V, Cat. III, pollution level 2
Guarantee 1 year 1 year
GENERAL CHARACTERISTICS PX 120 PX 110
*Apparent power = VA – reactive power = VAR – In three-phase, the measurement is only exact for sinusoidal signals.
For assistance and ordering
Characteristics subject to modifications according to technological developments.
FRANCE
190, rue Championnet
75876 PARIS Cedex 18
Tel: +33 1 44 85 44 86
Fax: +33 1 46 27 95 59
e-mail: export@chauvin-arnoux.fr
www.chauvin-arnoux.fr
UNITED KINGDOM /Chauvin Arnoux Ltd
Waldeck House -Waldeck Road
MAIDENHEAD SL6 8BR
Tel: 01628 788 888
Fax: 01628 628 099
e-mail: info@chauvin-arnoux.co.uk
www.chauvin-arnoux.co.uk
PX 120 and PX 110: TRMS three- and single
phase digital wattmeters
