Waterproof Checkweighing Scales

Series

Weighing at theSpeed of Lights!
www.aandd.jp

Reduce Overﬁlled Packs and Increase
Packing Speed
Fresh produce relies heavily on manual packing processes, often utilizing casual labor
to pack into punnets/boxes/bags ready for supermarket consumers. On top of the laborcost, the cost of extra produce given away in overﬁlled packs can add up to thousandsof dollars per week if unchecked.
The SJ-WP/SJ-WP-BT series oﬀers a simple solution, utilizing programmable high speed
traﬃc (or comparator*1) lights rather than focusing on a numeric weight display.

*1 Function to indicate whether the measured weight is within the designated limits

Bright and multi-colored 5-step LED comparator lights
People respond to these signals faster than just looking at numbers. Green means 'Go', redmeans 'Stop' (and yellow means 'Warning' in the case of ﬁve-level comparison).

Quantity too small

Quantity just right

Quantity too large

Comparisons can be made in three*2, ﬁve, or even seven levels for grading purposes. The scale cansave up to 10 sets of limit values for fast and simple changeover to diﬀerent pack sizes/formats.

*2 Default setting

3 levels

5 levels

7 levels

Why is the load cell (weight sensor) mounted outside rather thaninside the housing?
This innovative design allows the device to becompletely sealed from moisture without compromising
the weighing speed and stability due to up and down
movement of the load cell changing the air pressure
inside. As a result, the SJ-WP/SJ-WP-BT series canstabilize in 0.5 seconds or less*3, which further helps
to improve factory productivity and eﬃciency.
Subject to the weighing environment, display*3 resolution
and response characteristic setting

IP67 dust and waterproof *4 construction
In addition to packaging fruits and vegetables, the SJ-WP/SJ-WP-BT series is also ideal forweighing wet objects (e.g. ﬁsh) or ﬁne powders that easily scatter (e.g. ﬂour). After use, residues
can be rinsed with water quickly to keep the scale always clean and hygienic.
For thorough washing, you can strip down the scale by removing (1) the weighing pan with thestainless steel (SUS304) cover and (2) pan support with transparent overhanging shield panels,
and then (3) soak the scale directly in water with pH-neutral detergent.
(1)*4 Permits no inﬁltration of water while immersed to a depth of 1 meter for 30 minutes
(2)

(3)

The aluminum load cell of the SJ-WP/SJ-WP-BT series is treated with alumite and silicon to beanti-corrosive and withstand long-term use in wet environments.

Other useful features✔ Large LCD digits (26 mm character height) with white backlight that provides excellent visibilityin dim light✔ 5000-hour*5 continuous operation with six D alkaline batteries (LED and backlight OFF)✔ Auto power OFF function to avoid wasting power when the scale is inactive for a set period(5 to 60 minutes) of time
✔ Four selectable weighing resolutions: 1/3,000, 1/6,000 (or 1/7,500), 1/12,000 (or 15,000), and 1/30,000✔ Multiple weighing units: gram, kilogram, pound, ounce, troy ounce, pound-ounce, tael
(Singapore/HK jewelry/Taiwan), tola, and Newton✔ Counting mode to count a number of small pieces of the same weight instantly and precisely✔ Response characteristics adjustable depending on the degree of vibration and draft at the location✔ Take-away check weighing possible using auto-tare and negative comparison functions*5 For the SJ-WP series (2500-hour for the SJ-WP-BT series)
Take-away check weighing

Tare the initial weight (either
manual or automatic).

Take out the content for
the target weight.

The scale performs tareautomatically and returns
the display to zero.

Realizing Data Communication While Maintaining
the IP67 Dust & Waterprooﬁng
The SJ-WP-BT series, with Bluetooth® compatibility, can either communicate with a
PC via the AD-8541-PC wireless communication interface for PC or send weighing
data to the AD-8931 wireless remote display (both sold separately),*6 requiring nocable connection and thus not compromising its protection against dust or water.
The maximum communication range is 10 m when there is no*6 obstacle
such as a wall. The SJ-WP-BT series can be paired with only
one of these devices.

1. SJ-WP-BT series + AD-8541-PC

SJ-WP-BT series

AD-8541-PC

The AD-8541-PC enables a PC (with communication software such as WinCT installed) towirelessly receive data from and send commands to the SJ-WP-BT series through its USB
port.*7 The commands available with the SJ-WP-BT series include read/set comparator
limit values as well as request data, zero, tare, clear tare, and switch the weighing unit sothat you can avoid troublesome key operation with the scale when conﬁrming and/orchanging the comparator limit values.
driver software for the AD-8541-PC is automatically installed with Windows 8.1 or*7 Thelater. If the driver cannot be installed, download it from the [Support] - [Software]
section of the A&D website (www.aandd.jp), where WinCT is also downloadable for free.

2. SJ-WP-BT series + AD-8931

SJ-WP-BT series

AD-8931

The AD-8931 can wirelessly receive and display weighing results from the SJ-WP-BT series. It
has props to stand on its own and holes so that it can be mounted on a wall to suit your needs.

•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••Note) Please inquire as to whether the above Bluetooth® devices are certiﬁed for use in your country.

Speciﬁcations

AD-8541-PC
Supported operating system
Operating environment

Windows XP/Vista/7/8.1/10, 32/64 bit–10 to 40 ˚C / 14 to 104 ˚F, 85% R.H. or less (no condensation)

Power supply

From USB port

Communication range
Wireless communication module

Max. 10 m (line of sight)
EYSHCNZXZ (TAIYO YUDEN CO., LTD.)
Bluetooth 4.2 (Bluetooth Low Energy)
Baud rate: 2400 bps

Serial communication parameters

Bit length / parity: 7 bit / even
Stop bit: 1 bitExternal dimensions

Approx. 24 (W) × 12 (H) × 74 (D) mm

Net weight

Approx. 15 g

AD-8931
Display
Display refresh rate
Displayable units of measure*ii
Operating environment
Power supply
Battery life*iii

7 segment LCD with backlight (character height: 26 mm)
Approx. 10 times / second*ig (gram), kg (kilogram), lb (pound), oz (ounce), ozt (troy ounce),tl (tael), t (tola), pcs (counting mode), N (Newton)–10 to 40 ˚C / 14 to 104 ˚F, 85% R.H. or less (no condensation)
Four AAA batteries (R03 / LR03) or USB (5 V / 50 mA)
Approx. 200 hours (with backlight OFF)Approx. 100 hours (with backlight always ON)

Communication range
Wireless communication module
External dimensions
Net weightMax. 10 m (line of sight)
EYSHCNZXZ (TAIYO YUDEN CO., LTD.)
Bluetooth 4.2 (Bluetooth Low Energy)
160 (W) × 74 (D) × 25 (H) mm
Approx. 160 g (excluding batteries)

the scale transmits weighing data at 10 times / second*iii WhenFor other units of measure,*iii Four AAA alkaline batteries at 25is ˚Cdisplayed.
*

Speciﬁcations
SJ-3000WP
SJ-3000WP-BT

SJ-6000WP
SJ-6000WP-BT

SJ-15KWP
SJ-15KWP-BT

SJ-30KWP
SJ-30KWP-BT

3

6

1530

0.00010.00020.00050.001

0.00020.0005

0.001

0.002

0.0005*i0.001*i0.002*i0.005*i

0.001

0.002

0.005

0.01

6.6133366

0.00020.0005

0.001

0.002

Capacitykg

Readability

Capacitylb

Readability

0.0005

0.001

0.002

0.005

0.001*i0.002*i0.005*i0.01*i

0.002

0.005

0.01

0.02

105

210

520

1050

0.005

0.01

0.02

0.05

0.01

0.02

0.05

0.1

0.02*i0.05*i

0.1*i

0.2*i

0.05

0.1

0.2

0.5

6

13

33

66

1g

2g

5g

±2 g

±5 g

±10 g

Capacityoz

Readability

Capacitylb-oz

Readability

Counting

0.1

Number of samples

5, 10, 20, 50 or 100

Maximum count

120,000

Repeatability (standard deviation)

0.5 gLinearity±1 g

Sensitivity drift±50 ppm / ˚C (5 to 35 ˚C / 41 to 95 ˚F)Weight display

Display

7 segment LCD (character height: 26 mm) with white LED backlight

Comparator lights

Tricolor 5-step LED: red / yellow / green / yellow / red

Display refresh rate

20 times / secondg (gram), kg (kilogram), lb (pound), oz (ounce), ozt (troy ounce),

Units of measurelb-oz (pound-ounce), tl (tael), t (tola), pcs (counting mode), N (Newton)

Operating temperature–10 to 40 ˚C / 14 to 104 ˚F
SJ-WP: Approx. 5,000 hours

Battery* life
(with LED and backlight OFF)ii

SJ-WP-BT: Approx. 2,500 hours

Weighing pan size

232 (W) × 192 (D) mm / 9.18 (W) × 7.6 (D) in

External dimensions

236 (W) × 260 (D) × 148 (H) mm / 9.3 (W) × 10.2 (D) × 5.8 (H) in

Net weight

Approx. 4 kg / 9 lb

Standard accessories

Instruction manual, screwdriver, cleaning sheet*i Factory setting *ii Six D alkaline batteries at 20 ˚C
WirelessCommunication

SJ-WP-BT

A&D Company, Ltd.

3-23-14 Higashi-Ikebukuro, Toshima-Ku, Tokyo, 170-0013, Japan Tel: +81 3-5391-6132 Fax: +81 3-5391-1566 www.aandd.jp

A&D Engineering, Inc.

1756 Automation Parkway, San Jose, CA 95131, U.S.A. Tel: +1 408-263-5333 Fax: +1 408-263-0119

A&D Australasia Pty Ltd.

32 Dew Street, Thebarton, South Australia 5031, Australia Tel: +61 8-8301-8100 Fax: +61 8-8352-7409

A&D Instruments Ltd.

Unit 24/26 Blacklands Way, Abingdon Business Park, Abingdon, Oxfordshire, OX14 1DY, United Kingdom Tel: +44 1235-550420 Fax: +44 1235-550485<German Sales Office>Hamburger Straße 30, D-22926, Ahrensburg, Germany Tel: +49 4102-459230 Fax: +49 4102-459231

A&D Korea Ltd.

8F Manhattan Bldg., 33, Gukjegeumyung-ro 6-gil, Yeongdeungpo-gu, Seoul, 07331, Korea Tel: +82 2-780-4101 Fax: +82 2-782-4280

A&D Rus Co., Ltd.

Vereyskaya Str. 17, 121357, Moscow, Russia Tel: +7 495-937-33-44 Fax: +7 495-937-55-66

A&D Instruments India (P) Ltd.

509 Udyog Vihar Phase V Gurgaon-122 016, Haryana, India Tel: +91 (124) 471-5555 Fax: +91 (124) 471-5599* SJWP-ADCC-06-PR6-19900GP