PMLCD
V. 02 – 08/07/2015
2
©Velleman nv
USER MANUAL
1.
Introduction
To all residents of the European Union
Important environmental information about this product
This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm
the environment. Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken
to a specialized company for recycling. This device should be returned to your distributor or to a local
recycling service. Respect the local environmental rules.
If
in doubt, contact your local waste disposal authorities.
Thank you for choosing Velleman! Please read the manual thoroughly before bringing this device into service. If
the device was damaged in transit, don't install or use it and contact your dealer.
2.
Applications
Voltmeter, thermometer, PH meter, dB meter, Watt meter, current meter, capacitance meter, Lux meter, LCR
meter, other industrial & domestic uses
3.
Operation
If needed, add proper voltage dividers (not included) and decimal point wire jumper:
(RA and RB are 1/2 W 0.5% metal film resistors)
Max. voltage to be measured
Proper Voltage Divider
Decimal Point
200 mV
-
Short-circuit P3 - P0
20 V
Disconnect wire jumper in RB.
RB = 9.9M
Ω
; RA = 100k
Ω
Short-circuit P2 - P0
200 V
Disconnect wire jumper in RB.
RB = 9.99M
Ω
; RA = 10k
Ω
Short-circuit P3 - P0
500 V
Disconnect wire jumper in RB.
RB = 9.999M
Ω
; RA = 1k
Ω
-
•
Connect an appropriate power supply to the panel meter (depending on the model, see Technical
Specifications).
•
For ranges other than 200mV, generate an input voltage of exactly half the measuring range (e.g. 100V for
200V range) and carefully adjust the semi-fixed resistor R2 until you obtain the same reading on the
display.
•
Connect the input voltage to be measured to +Vin and -Vin. The input voltage should be DC only.
4.
Technical Specifications
display
3 1/2-digit LCD
input sensitivity
200 mV FS
power supply
9 VDC (7 - 12 VDC)
decimal point selection
with wire jumper
automatic polarity indication
figure height
13 mm (0.52")
sampling rate
2 - 3 readings / sec.
guaranteed zero reading for 0V input
high input impedance
> 100 MOhm
accuracy
± 0.5%
power consumption
1 mA DC
dimensions
68 x 44 mm
Use this device with original accessories only. Velleman nv cannot be held responsible in the event of damage
or injury resulting from (incorrect) use of this device.
For more info concerning this product and the latest version of this manual, please visit our website
www.velleman.eu.
The information in this manual is subject to change without prior notice.
W