Measuretek PS-103-35 User manual

WWW.MEASURETEK.NET
PS-103
Operation Manual
Contents subject to change without notice
Version 1.0
11/2011

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General Information
Read and understand all operating instructions before using this product. Keep this manual for future reference.
Record the weight shortly after loading the platform. After extended periods, the load cell’s output signature may result in a less
accurate reading.
Place the scale on a hard, flat, and level surface before using.
Avoid extended exposure to extreme heat or cold. Optimum operation is at normal room temperature. Allow the scale to
acclimate to room temperature before using.
Allow sufficient warm up time. Turn the scale on and allow up to 2 minutes for internal components to stabilize before weighing.
Electronic scales are precision instruments. Do not operate near cell phones, radios, computers or other electronic devices that
emit radio frequencies that may cause unstable readings. If the scale performs poorly, try moving to a different room or
location.
Avoid using in heavy vibration or heavy airflow conditions.
Specifications
Model PS-103-35 PS-103-68 PS-103-75 PS-103-180 PS-103-200
Max Capacity 77lb (35kg) 150lb (68kg) 165lb (75kg) 397lb (180kg) 440lb (200kg)
Readability 0.05lb (0.02kg) 0.5lb (0.2kg) 0.1lb (0.05kg) 0.5lb (0.2kg) 0.2lb (0.1kg)
Resolution 1:1750 1:300 1:1500 1:900 1:2000
Construction Epoxy painted carbon steel, treaded surface
W
eighing Units kg / lb / lb:oz
Modes
W
eighing, Dynamic weighing, Display hold
Display 0.58” (15mm) 7-segment LCD, 51/2 digits
Zero Range +20% of full capacity
Tare Range Full capacity
Stabilization Time <3 seconds
Operating Temp. 40° to 105°F (5° to 40°C)
Humidity Range <90% relative humidity, non-condensing
Power
Alkaline Batteries: 4 x “AAA” size cells
AC Adapter: 6Vdc/500mA, with central negative:
USB
Interface USB
Max Overload 120% of capacity
Indicator Dimensions 5.73 x 2.08 x 0.71” (L x W x H)
145.5 x 53 x 18mm (L x W x H)
Base Dimensions 12” x 12” x 2.28” (L x W x H)
305 x 305 x 58mm (L x
W
x H)
12” x 12” x 2.52” (L x W x H)
305 x 305 x 64mm (L x W x H)

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Display
>0< - Scale is zeroed and gross weight is zero.
Net - Display reading is net weight; tare is not 0.
lb, kg, oz - Unit of measure.
Hold - Scale is in dynamic weighing mode.
-Hold flashes - actual fluctuating weight displayed.
-Hold does not flash - locked weight is displayed.
Function Keys
KEY MODE DEFINITION
PRINT/ HOLD Weighing mode <3 seconds Sends output data via the USB port
>3 seconds Enters or exits HOLD mode
Setup or Calibration mode Shifts the flashing data entry position from right to left
UNIT Weighing mode Chooses weight unit of measure
Setup/Calibration mode Increases the digit in the flashing data entry position by 1
TARE Weighing mode Tares the weight
Setup or Calibration mode Confirms the input data and forwards to next step
ON/OFF/
ZERO
Weighing mode <3 seconds Zeros the platform weight
>3 seconds Powers off the scale
Setup or Calibration mode Exits to normal weighing mode
ON/OFF/
ZERO
+
UNIT
Weighing mode
(more than 3 seconds) Enter user parameter setup mode.
ON/OFF/
ZERO
+
TARE
Weighing mode
(more than 3 seconds) Enter calibration mode
Contents
Indicator Scale platform
Cable from load cell to indicator 6’ USB cable
AC120V/DC6V 500mA UL adaptor Owner’s Manual

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Calibration Mode
Note:
A standard calibration weight of at least 10% of the scale’s rated capacity is required.
The calibration operation must be in pounds.
Press ZERO/ON/OFF at any time to exit calibration mode.
Using 80% to 100% of the scale’s rated capacity is recommended for optimum results.
1. From normal weighing mode, press TARE and ZERO/ON/OFF until “CAL-?” is displayed.
2. Within calibration mode:
Press PRINT/HOLD to shift the flashing data entry position from right to left
Press UNIT to increase the digit in the flashing data entry position by 1
Press TARE to confirm and save the set data and enter next setting
Press ZERO/ON/OFF key to exit this mode
3. Press TARE to confirm and enter calibration mode.
4. “CAL.P0“will be displayed to calibrate scale’s zero-point. Remove all weight from the scale platform and press TARE to
confirm and move to the next step, or press ON/OFF to exit.
5. “CAL.P1“ will be displayed and the scale will be ready to accept the next calibration point. The default calibration input weight
will be 50% of the scale’s rated capacity. Use the PRINT/HOLD and UNIT keys adjust to the standard calibration weight you will
use. Note: do not use less than 10% of the scale’s rated capacity. Place the standard calibration weight on the platform
and press TARE to confirm your input and move to the next step. If “CAL.Er” is displayed, press ZERO/ON/OFF key to
exit this mode and begin again.
6. “CAL.P2“ will be displayed and the scale will be ready to accept the next calibration point. This step is optional, but better
linearity will be achieved by calibrating to a second point. To skip this step, press the TARE key. Otherwise, the default
calibration input weight will be 100% of the scale’s rated capacity. Use the PRINT/HOLD and UNIT keys adjust to the standard
calibration weight you will use. Note: do not use less than 20% of the scale’s rated capacity. Place the standard
calibration weight on the platform and press TARE to confirm your input and move to the next step. If “CAL.Er” is
displayed, press ZERO/ON/OFF key to exit this mode and begin again.
7. “CAL.P0“will be displayed again. Remove all weight from the platform and press TARE to confirm and enter normal
weighing mode.

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User Parameter Setup Mode
1. From normal weighing mode, press UNIT and ZERO/ON/OFF until “USer” is displayed.
2. Within user parameter setup mode:
Press PRINT/HOLD to shift the flashing data entry position from right to left
Press UNIT to increase the digit in the flashing data entry position by 1
Press TARE to confirm and save the set data and enter next setting
Press ZERO/ON/OFF key to exit this mode
Parameter Default Setting
U1 05
Auto-off time:
0 = No auto-off function
01-15 = Scale will auto power off after 1-15 minutes with no activity
U2 2
Backlight on-off mode option:
0 = Backlight is always off
1 = Backlight is always on
2 = Backlight is auto-off after 10 seconds with no activity
U3 2
PRINT/HOLD key function set:
0 = Hold only
1 = Print only
2 = Hold and Print
U4 0
Hold function mode:
0 = No hold function
1 = Holds the largest weight reading
2-50 = Displays the stable weight within 3 seconds.
Note: When weight exceeds 10d and the variation is within ±2d～±50d, the stable weight
is displayed until less than 10d is detected on the platform.
1d = 1 division = 1 unit of readability as noted in Specifications
U5 1
Serial communication output format:
0= Communication is disabled
1 = Outputs stable weight, unit, and status when PRINT/HOLD is pressed, but does not
receive data
2 = Output gross, tare, net weight, unit, and status when PRINT/HOLD is pressed, but does
not receive data
3 = Continuously outputs displayed weight, unit, and status, but does not receive data
4 = Continuously outputs gross, tare, net weight, unit, and status, but does not receive data
5 = Outputs weight, unit, and status one time after scale is becomes stable
6 = Outputs gross, tare, net weight, unit, and status one time after scale becomes stable
7 = Two way communication mode
U6 3
Baud rate for Serial communication:
0 = 1200 3 = 9600
1 = 2400 4 = 19200
2 = 4800
U7 0
Serial communication byte format:
0 = 8N1 – 8 data bits, no parity, 1 stop bit
1 = 7O1 – 7 data bits, 1 bit odd parity, 1 stop bit
2 = 7E1 – 7 data bits, 1 bit even parity, 1 stop bit

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Serial Communication
Before using the USB communication port, download the USB driver from http://www.measuretek.net/Download.html
Detailed Serial (USB) Output Information:
U5=0: No serial communication. No data transmitted or received even if the scale is installed with serial communication
hardware.
U5=1: Pressing PRINT/HOLD will output the current stable weight, weight unit, and current status data in the following format,
but will not receive data:
<LF>< weight, minus, decimal point, weight unit><CR><LF> H1H2H3 <CR><ETX>
U5=2: Pressing PRINT/HOLD will output the current stable gross weight, tare, net weight, weight unit and current status data in
the following format, but will not receive data:
<LF><Gross: reading, minus, decimal point, unit><CR>
<LF> <Tare: reading, decimal point, unit><CR>
<LF> <Net: reading, minus, decimal point, unit><CR>
<LF> H1H2H3<CR><ETX>
Bytesused:
8 - Weight reading
1 - Minus
1 - Decimal point
2 or 5 - Weight unit
3 - Current status (H1.H2.H3)
U5=3: Continuously outputs the current displayed reading, weight unit, and current status data, but will not receive data. The
output format is the same as U5=1.
U5=4: Continuously outputs the current gross weight, tare weight, net weight data, weight unit, and current status data, but will
not receive data. The output format is the same as U5=2.
U5=5: When the scale is stable, it will output the current displayed reading ,weight unit, and current status data automatically
one time, but will not receive data. The output format is same as U5=1.
U5=6: When the scale is stable, it will output the current gross weight, tare weight, net weight unit, and current status data
automatically one time, but will not receive data. The output format is same as U5=2.
U5=7: Two way communication. Responses to serial commands will be immediate, or within one
Power Loadcell
USB

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Serial Communication (continued)
weight measure cycle of the scale. One second is adequate for use as a time-out value by remote (controlling) device. After
receiving an available command, the indicator will send out the corresponding messages:
For normal operation, weight data will be 8 digits long; minus sign will be 1 digit; decimal point will be 1 digit; and unit of
measure will be 2 digits if “lb” or “kg”, and 5 digits if “lb:oz”. Unit of measure abbreviations are always lower case.
If the weight is over capacity, the scale will return ten ‘^’ characters (the minus sign, decimal point, and weight data fields
are filled by ‘^’).
If the weight is under capacity or if there is a zero point error, the scale will return ten ‘_’ characters.
The minus ‘-’ character indicates negative weight, and a space ‘ ’ character indicates positive weight. The minus sign follows
after the first digit.
Leading zero digits are suppressed.
Serial Communication Symbols
<LF
>
Line Feed character (hex 0AH)
<CR
>
Carriage Return character (hex 0DH)
<ETX
>
End of Text character (hex 03)
<SP
>
Space (hex 20H)
H1H2H
3
Three status bytes (see below for byte definitions)
<p
>
Polarity (minus sign for negative weight and space for positive weight)
W1
-
W8
W
eight data
<dp
>
Decimal point
U1U
2
Measure units, “kg”, “lb”, or “lb oz”
Status Byte Definitions
Bit Byte 1 (H1) Byte 2 (H2) Byte 3 (H3)
0 0=stable 0= not under capacity 01=normal work mode
10= hold work mode
00=not defined
11= not defined
1= not stable 1= under capacity
1 0= not at zero point 0= not over capacity
1= at zero point 1= over capacity
2 0=not AD over 0=not zero over 0= gross weight
1=AD over 1=zero over 1= net weight
3 0= eeprom OK 0=not zero down 0=not AD down
1= eeprom error 1= zero down 1=AD down
4 always 1 always 1 always 1
5 always 1 always 1 always 1
6 always 0 always 1 always 0
7 parity parity parity

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Serial Communication (continued)
Serial Commands and Responses
Command: S<CR> (53h 0dh)
Response:
<LF> H1H2H3<CR><ETX>
Command:
W<CR> (57h 0dh)
Responses:
over capacity:
<LF>^^^^^^^^^^u1u2<CR><LF>H1H2H3<CR><ETX>
under capacity:
<LF>_________u1u2<CR><LF> H1H2H3<CR><ETX>
zero-point error:
<LF>----------u1u2<CR><LF> H1H2H3<CR><ETX>
Note: If the weight unit is lb:oz, U1U2 = “lb oz” in above item ①②③.
Normal weight is displayed, current weight unit is kg or lb:
<LF><p>w1w2w3w4w5w6<dp>w7w8u1u2<CR><LF>H1H2H3<CR><ETX>
Normal weight is displayed, current weight unit is lb:oz,
<LF><p>w1w2w3w4w5w6lb<sp>w7w8<o><z><CR>H1H2H3<CR><ETX> or
<LF><p>w1w2w3w4w5lb<sp> w6w7<dp>w8oz<CR>H1H2H3<CR><ETX>
Command:
Z<CR> (5ah 0dh)
Response:
<LF> H1H2H3<CR><ETX>
Zero function is activated and returns to current scale status, like pressing ZERO/ON/OFF. If zero function cannot be
activated, it will return to current scale status.
Command:
T<CR> (54h 0dh)
Response:
<LF> H1H2H3<CR><ETX>
Tare function is activated and returns to current scale status, like pressing TARE . If tare
function cannot be activated, it will return to current scale status.
Command:
U<CR> (55h 0dh)
Response: <LF>u1u2<CR><LF> H1H2H3<CR><ETX>
Changes unit of measure and returns to current scale status with new units, like pressing UNIT button.
Command
: L<CR> (4ch 0dh)
Response:
<LF> H1H2H3<CR><ETX>
If hold function is enabled, goes to or exits from hold mode.
Command:
X<CR> (58h 0dh)
Response: none
Powers off the scale, like pressing ZERO/ON/OFF.
Command: All others
Response:
<LF>? <CR><ETX>
Unrecognized command.
Load Cell Wiring
PIN1 ------ Excitation+
PIN2 ------ Signal+
PIN3 ------ Signal -
PIN4 ------ Excitation–

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Serial Communication (continued)
Meaning of Some Symbols:
0¯ ¯ ¯
¯
Zero point is over the setting range
0_ _ _ _ Zero is below the setting range
Ad¯ ¯
¯
Analog digital converter chip over max. range
Ad _ _ _ Analog digital converter chip below min. range
¯ ¯ ¯ ¯
¯
W
eight signal is too large
_
_ _ _
W
eight signal is too small
EEP.E
1
Config parameters incorrect (no set, no calibration, over normal range, etc.)
EEP.E
2
User parameters incorrect
CA
L
-
P
x
Calibration point
CAL.E
r
Error in calibration
CA
P
.-
-
The setting full capacity will be displayed
Cx.
y
No. x configuration parameter is set to y
Ux.
y
No. x user parameter is set to y
Lo.bA
t
Battery voltage is below 3.6V
Replacement Parts
Part Number Description
MH12R97601G AC120V/DC6V 500mA UL adaptor
One Year Limited Warranty
MeasureTek products covered in this manual are guaranteed to be free from defects in material and workmanship for a period of
one year after date of purchase. Misuse, accidental damage, overload, alteration, and improper installation are expressly excluded.
Any product which is determined to be defective in material or workmanship within this time period may, as the exclusive remedy, be
returned to an authorized MeasureTek distributor or service center, freight prepaid with prior return authorization, to be repaired or
replaced at the manufacturer’s option. MeasureTek’s liability under this warranty is limited to the repair or replacement of the
defective product and in no event shall MeasureTek be liable for consequential or indirect damages.