NHV-1.5/NHV-3/NHV-6/NHV-15/NHV-30
NV-1.5/NV-3/NV-7.5/NV-15/NV-30
RS232C Specifications & connections
A. Specification :
Baud rate : 2400 /9600
Parity : none
Data bit : 8
Stop bit : 1
C. Connections : DB-09 Male
pin no. 2 5 others
TXD GND NC
B. Data Stream :
1
0
0 1 2 3 4 5 6 7
LSB MSB
^ ^
Start bit Stop bit
D. RS232C Format :
no. 1 2 3 4 5 6 7 8 9 10
SP/- X X X X X X X CR LF
Error message
( 20% of Cap.)
Symptom Cause Solution
Over load :
* Weighing range exceed > Unload scale or reduce preload
Under load :
* Weighing pan not in place > Ensure the weighing pan is correctly
installed and surrounding parts are
not touching
* Weighing range zero below > Set scale to zero
* Contact between weighing > Apply pre-load
Zeroing not possible :
* Zeroing outside the zero > Ensure that zeroing is performed
setting range in the admissible range
Model: NV/NHV
Precision Scales
NV02SR
Operating Manual
7
You have purchased a quality precision weighing instrument that requires handling with care.
Read entire contents of this Operation Manual prior to operating your new instrument.
Disclaimer Notice
Calibrate your instrument using reference weights of the appropriate tolerance (class).
An instrument can be no more accurate than the standard to which it has been compared.
For assistance in the selection of reference weights, please contact the factory.
Caution: Changes or modifications not expressly approved by the manufacturer
could void the user's authority to operate this equipment.
Introduction
Thank you for choosing one of our instruments. Your instrument is designed and
manufactured to the most rigorous standards in order to give you years of service.
First, check the contents of the shipping carton. You should find the following :
* Manual * Instrument * AC Adapter
Next, follow the instructions for installing your instrument.
Now you are ready to begin using your instrument. To take advantage of its many features,
carefully read your operating manual.
It contains step-by-step procedures, examples, and other vital information.
Warning: Use of this product in a manner not specified by the manufacturer may impair any
safety protection provided by the equipment!
Calibration
2. Press and hold any key while powering ON.
3. Press key,
4. Press key for Capacity selection.
5. Press key to make sure Capacity selected,
and display shows Offset value to be 20000 ~ 200000.
If it's not in this range Sw1 to be adjust.
6. Press key to zero display.
7. Put on the calibrating weight in kg.
( Span value to be 250000 ~ 350000 at full capacity )
8. Press key to cycle through a list of permissible weights.
When the weight on the scale is displayed, press key.
Display shows:
F. Beep sounds
setting for GO
None
Short sounds bi.bi.bi....
Long sounds bi--bi--bi--
Programme
None
Baud rate 2400
Baud rate 9600
H. Baud rate
G. RS232 output
Manual
Auto
Continuously
1. Please have the jumper Jp3 switch OFF
before you start to calibrate weight.
9. After finish the weight calibration, make the Jp3 switch ON.
Now you are ready to weigh.
I. Units
kg only
kg / lb
1
6
Programme
Press and hold any key while powering ON. The display will shows
Press key goes to programme sequence.
Press key for parameter selecting and
Press key for setting and goes to next step. The programme sequence as follows:
B. Auto power off
C. Backlit
D. Beep sounds
setting for HI
E. Beep sounds
setting for LO
None
5 minutes after
10 minutes after
20 minutes after
30 minutes after
Auto lighting while loading
Active
None
Short sounds bi.bi.bi....
Long sounds bi--bi--bi--
None
Short sounds bi.bi.bi....
Long sounds bi--bi--bi--
Specifications
Preparation
Model NV-1.5 NV-3 NV-7.5 NV-15 NV-30 NHV-1.5 NHV-3 NHV-6 NHV-15 NHV-30
Range
Readability
Pan size 265 x 205 mm
Net Weight 4 kg
Power 9V/500mA, AC adapter included.
This product is intended for indoor use.
* Select a suitable work area.
* Work area should be relatively free from drafts and vibrations.
* Work surface should be level and rigid.
* Do not locate near magnetic materials or equipment/instruments which use magnets in
their design.
operation and accuracy.
Installation
Remove instrument and accessories from the carton.
Save packing material for transportation purposes.
* If using the AC adapter, insert power cord into the receptacle located on the side panel
of the instrument (behind On/Off switch). Firmly push in the plug.
* Allow the instrument to warm up for 30 minutes prior to use.
* Your instrument features a numeric display that continuously shows your weighing results.
* Avoid areas which have variations in room temperatures or have excessive room
Dimensions ( L x W x H ) 320 x 275 x 110 mm
None
E. Counting Function
a. Count the desired amount sample pieces (10, 20, 50, 100, or 200 total pieces )
b. Press the to display total count numbers of 10, 20, 50, 100, or 200.
This number will cycle, press the again to select sample size once
it is displayed. The arrow at the bottom of the display will point to .
c. You are now ready to perform parts counting of those specific pieces.
Press the for the total weight. Repeat step a through c for each type of
piece to be counted.
and place on the pan.
Operation
A. Auto zero tracking
None
1 digit
2 digits
1.5kg 3kg 7.5kg 15kg 30kg 1.5kg 3kg 6kg 15kg 30kg
0.1g 0.2g 0.5g 1g 2g 0.05g 0.1g 0.2g 0.5g 1g
temperatures. Room temperatures above 40 or below 0 could be affect
2
5
Operation
A. Getting Started
Turn the instrument on by pressing the power switch on.
The display will down count from 999999 . . . while the unit is being updated.
Allow the unit to warm-up for 30 minutes.
C. HI / LO Checkweigh functions
1. Use the , and keys to change the OVER / UNDER limit settings.
2. The key can be select display or
for setting OVER and UNDER limit and return to normal weighing mode.
3. In normal weighing mode, press to select HI / LO Checkweigh mode.
If the weight is higher than OVER limit, the HI lamp lights on in yellow color
and beep sounds as you setted.
If the weight is between OVER and UNDER limit, the GO lamp lights on in green color
and beep sounds as you setted.
If the weight is lower than UNDER limit, the LO lamp lights on in red color
and beep sounds as you setted.
4. The key can be used to delete all datas in HI/LO setting mode.
B. Taring (zeroing)
All models have taring (zeroing) capabilities up to their total weight capacity.
To weigh a sample in its container with the display showing the weight of the sample
use the following ZERO (tare) procedure.
1. Place sample container on pan and then press the key and NET lamp lights.
2. Now place sample in its container.
3. When the scale is stable, the display shows the weight of the sample.
D. Accumulation function
1. Press key can be accumulating the sub-total weight one time.
The next accumulation must be return to zero and got new weight.
The display will be shows the times of accumulation promptly,
2. Press key can be show the total times promptly,
4. The key can be used to delete all datas in grand-total mode,
Function keys
Function key. Used for toggle switch between
display weight, check-weigh or total accumulation.
Units switch.
Captures a new center of zero.
Reduce gross weight on pan as tare weight.
Setting OVER and UNDER limit.
a. The M+ to be used when accumulating the sub-total data.
b. The < to be a function of moves the flashing cursor
digit to the left.
a. The options.
b. The to be a function of increases the flashing cursor
by one digit.
*
<
Turns instrument On or Off.
On/Off Switch
Used for parts counting.
and return to normal weight display.
and then shows grand-total.
3. The key can be used to review total times in grand-total mode.
and return to normal weight display.
3 4
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