USA Measurements US-BLW User manual

TABLE&OF&CONTENTS&
&
US-BLW
Wireless Handheld
Display
Operation Manual

TABLE&OF&CONTENTS&
&
Note: Please read the operation direction carefully before using weighing
instrument. Thank you for your understanding.

TABLE&OF&CONTENTS&
Chapter I Instrument Introduction 1
1. Overview 1
2. Technical Performances 1
Chapter II Definition of Interface 2
1. Wireless Transmitter Box 2
2. Wireless Instruments 2
Chapter III Calibration Debugs 3
1. Parameter Set 3
2. Weight Calibration 5
3. Compensation Calibration 6
4. Standardized Rate Modification & Calibration Debug Passwords 7
Chapter IV Operation Introduction 9
1. Introduction of Indicator Lamp 9
2. Boot to Zero & Reset Button 9
3. Net Weight 9
4. Weight Accumulation 9
5. Cumulative Weight Display 10
6. Cumulative Weight Clear 10
7. Information Prompts 10
8. Matters Needing Attention 10

CHAPTER&I&INSTRUMENT&INTRODUCTION&
1&
1. Overview
The wireless weighing instrument consists of handheld wireless instrumentation and
wireless transmitter box. It has benefits of weighing with high precision, long-term stability
and high reliability of wireless communication. The operation is very easy and all electronic
components accord with industrial-grade to ensure that work in harsh environments.
2. Technical Performances
1) Wireless transmitter box
a. Input Signal Range -19.5~+19.5mV
b. A/D Conversion 24-bit Sigma-Delta analog-to-digital Conversion
c. Nonlinear ≤0.0015% F.S.
d. Minimum Resolution 0.5µV/d
e. Supply Voltage 5V/300mA
f. Transmission Frequency 433MHz (32 channels)/1200bps
g. Transmission Range ≥350m (No barrier)
h. Operating Temperature -40~+85℃
i. Relative Humidity ≤ 90% R.H
j. Power Supply Voltage DC7.2V
2) Wireless Instruments
a. Display Screen 6-bit 0.4-inch ultra bright LED display
b. Operating Temperature -40~+85℃
c. Relative Humidity ≤ 90% R.H
d. Power Supply Voltage Internal lithium battery 3Ah/6.4V; Outside DC7.2V

CHAPTER&II&DEFINITION&OF&INTERFACE&
2&
1. F1 Wireless A/D transmitter box
a. Power Supply
The combination of two lines; red wire connect 6V, black line with 0V.
b. Sensor
Red line
Black line
Green line
White line
Bridge
Voltage +
Bridge
Voltage -
Signal+
Signal-
2. Wireless Instruments
The middle of power jack is positive supply DC7.2V, and the outside is Power Ground.

CHAPTER&III&CALIBRATION&DEBUGS&
3&
Before the calibration debugging of an instrument, it is necessary to carefully check if the
connection between the various parts is correct. It the connection has no problem, the next
step is to open the case of instrument and plug the short block of circuit board SW1 in the
instrument insert 1 and 2 feet. Then, it needs to be plugged in the instrument’s power through
ON. While the instrument finish its self-&inspection program and enter into the weighing
operation, it could be allowed to implement the calibration. After the calibration, the short block
of circuit board SW1 must be plugged in the instrument insert 2 and 3 feet.
1. Parameter Set
No.&
Key-Press&
Display&
Introduction&
1&
Calibration&
& 8& & & 8& & & 8& &
& 8& & & 8& & & 8& &
Enter&
Enter&
&
&
&888888&
CAL&&1&
In&Weighing&Mode,&press& &
Calibration&
Initial Calibration Password: M1=
888888
&
CAL=&1&Parameter&Setting&
2&
&
& 1& & & 0& &
Enter&
d&&&&**&
d&&&&10&
&
Weighing&Scope&Setting:&
d=&01,&02,&05,&10,&20,&50&
(e.g.)&d=&10&
3&
&
&
&
& 0& &
Enter&
dC&&&&*&
&
&
dC&&&&0&
Decimal&Point&Setting:&
dC=&0,&1,&2,&3,&4&
0&-&0,&1&-&0.0,&2&-&0.00,&3&-&0.000,&4&-&
0.0000&
(e.g.)&dC=&0&

CHAPTER&III&CALIBRATION&DEBUGS&
4&
4&
Clear&
& 5& & & 0& &
& 0& & & 0& & & 0& &
Enter&
&******&
&
&&50000&
Range&Setting:&
&
&
(e.g.)&50000kg&
5&
&
& 3& &
Enter&
F1.0&&*&
F1.0&&3&
Zero&Tracking&Speed&Setting:&
F1.0=&1,2,3,4(Slowest)&
(e.g.)&F1.0=&3&
6&
&
&
&
& 2& &
Enter&
F1.1&&*&
&
&
F1.1&&2&
Zero&Tracking&Range&Setting:&
F1.1=&0,&1,&2,&3,&4,&5,&6&
Zero&Tracking&Range&is&F1.1*0.5d&
(e.g.)&F1.1=&2&
7&
&
&
&
& 5& &
Enter&
F1.2&&*&
&
&
F1.2&&5&
Boot&Zero&Range&Setting:&
F1.2=&0,&1,&2,&3,&4,&5&
0&-&Boot&without&Zero,&1&-&2%,&2&-&
4%,&3&-&20%,&4&-&50%,&5&-&100%&
(e.g.)&F1.2=&5&

CHAPTER&III&CALIBRATION&DEBUGS&
5&
8&
&
&
&
&
& 5& &
Enter&
F1.3&&*&
&
&
&
F1.3&&5&
Press& →0←&to&set&Zero&Range：&
F1.3=&0,&1,&2,&3,&4,&5&
0&-&Press& →0←&without&Zero,&1&-&
2%,&2&-&4%,&3&-&20%,&4&-&50%,&5&-&
100%&
(e.g.)&F1.3=&5&
9&
&
&
Back&to&Weighing&Status&
2. Weight Calibration
No.&
Key-Press&
Display&
Introduction&
1&
&
& 2& &
Enter&
CAL&&1&
CAL&&2&
To&display&CAL&&1,&
&
CAL&=&2&Weight&Calibration&
2&
&
Enter&
&******&
&&&&&&0&
Display&numerical&value&in&empty&
electronic&scale&
If&display&steadily,&Press&Enter&
3&
&
Enter&
&xxxxxx&
&
Add&Standard&Weight&G&in&Weighing&
Platform&
If&display&steadily,&Press&Enter&

CHAPTER&III&CALIBRATION&DEBUGS&
6&
4&
&
& 1& & & 0& & & 0& &
& 0& & & 0& &
Enter&
&&&&&&0&
&
&&10000&
&
&
Input&Standard&Weight&G&
(e.g.)&G=&10000kg&
5&
&
&
Back&to&Weighing&Status&
3. Compensation Calibration
No.&
Key-Press&
Display&
Introduction&
1&
&
3& & &
Enter&
CAL&&1&
CAL&&3&
To&display&CAL&&1,&
&
CAL=&3&Compensation&Calibration&
2&
&
Enter&
&xxxxxx&
Existent&errors&between&Display&
Weight&and&Actual&Weight&G.&
Press&Enter&while&steady&
presentation&
3&
&
& 1& & & 0& & & 0& &
& 0& & & 0& &
Enter&
&&&&&&0&
&
&&10000&
&
&
Input&actual&Weight&G&
(e.g.)&G=&10000kg&
4&
&
&
Back&to&Weighing&Status&

CHAPTER&III&CALIBRATION&DEBUGS&
7&
4. Standardized Rate Modification & Calibration Debug Passwords
No.&
Key-Press&
Display&
Introduction&
1&
&
4& &
Enter&
CAL&&1&
CAL&&4&
To&display&CAL&&1,&
CAL=&4&Modifying&Standardized&
Rate&and&Calibration&Password&M1&
2&
&
&
Enter&
&&&&&r1&
&******&
After&1&second,&
Display&r1&(but&r1&cannot&be&
changed)&
3&
&
&
Enter&
&&&&&r2&
&******&
&
After&1&second,&
r2&Press&numeric&key&to&modify&
&
4&
&
&
& 8& & & 8& & & 8& &
& 8& & & 8& & & 8& &
Enter&
&&&&F1&
&xxxxxx&
&
&888888&
After&1&second,&
Calibration&Password&F1&
Modification:&
Input&new&Calibration&Password&
M1&
(e.g.)&Calibration&Password&M1=&
888888&
5&
&
&
Back&to&Weighing&Status&
Warning:
1) The Standardized Rate cannot be allowed to modify randomly or the result of
weighing process may be not accurate. Also, it is better not to change
Calibration Debugging Password. If the Password has been modified, please
must to remember because this instrument has no universal password. It has to

CHAPTER&III&CALIBRATION&DEBUGS&
8&
return to the manufacturer for initialization if losing the password.
2) Please remember plugging the short block of circuit board in the instrument
insert 1 and 2 feet is a premise for all of above Calibration Debugging Operation.
After finishing the operation, users must plug the short block insert 2 and 3 feet
and seal on the shell of instrument.

CHAPTER&IV&OPERATION&INTRODUCTION&
9&
1. Introduction of Indicator Lamp
Indicator Lamp of stability: The weighing value is stable;
Indicator Lamp of gross weight: To display gross weight value;
Indicator Lamp of net weight: To display net weight value;
Indicator Lamp of zeroing: Gross weight value is 0
2. Boot to Zero & Reset Button
1) Boot to Zero
After self-inspection in boot, if the weight value is within boot zero range, it will
display the weight value return to zero, or display the weight value not return to
zero.
2) Press →0← to Zero
Under weighing status, press →0←. If the weight is within zero range by zero key,
the weighing display will automatic zero resetting, or it does not return to zero.
3 Net Weight
In gross weighing state, the instrument displays the weight is stable and is greater than 0,
press TARE, the instrument will decrease tare weight and display net weight which is 0.
In the net weighing state, press TARE, the instrument back to gross weight status after
clearing the tare weight.
4 Weight Accumulation
In weighing status, the instrument displays the weight stability and greater than 0, press
ENTER, the instrument automatically displays the cumulative weights and cumulative
number of times (n ***).

CHAPTER&IV&OPERATION&INTRODUCTION&
10&
5 Cumulative Weight Display
In weighing mode, press CUMULATIVE, the instrument displays the cumulative number of
times (n ***); press ENTER, the instrument shows the cumulative weight of the high 3 (H
***); press ENTER again, the instrument displays the cumulative weight of the low 5 (L
*****);&and continues press ENTER to return to the weighing mode. In the process of the
display of the cumulative weight, press ESCAPE to return to the weighing state directly.
6 Cumulative Weight Clear
In the weighing status, press CLEAR, the instrument displays Y or N, press ENTER to clear
cumulative number of times and cumulative weights and back to weighing status; press
ESCAPE, it does not clear data and back to weighing status directly.
7 Information Prompts
- - - - - -: Overload Alarm Signal. If this is a scale without debugging, the error signal will be
eliminated after calibration.
Err01: Input wrong number.
Err02: No load weight on the scale which cannot be calibrated weight.
L : Indicates that the battery voltage is low which requires immediate charge.
--no--: Wireless signal failure.
8 Matters Needing Attention
1) To plug the sensor socket after turning off the instrument power supply.
2) If the left of the instrument displays L. please immediately using professional charger
for charging on the instrument. The instrument should be charged every three month if
there is no using in a long time.