The ACOM PW-200 is a simple weighing scale designed for general weighing purposes. It is manufactured by ACOM Inc. and is identified by model number PW-200 and part number 610-0006. The device is intended to be a high-quality, low-maintenance product.

Technical Specifications

The PW-200 scale offers various maximum capacities and minimum graduations, catering to different weighing needs:

Maximum Capacity / Minimum Graduation:
- 1.5 kg / 0.5 g
- 3 kg / 1 g
- 3 kg / 1 g
- 6 kg / 2 g
- 6 kg / 2 g
- 15 kg / 5 g
- 15 kg / 5 g
- 30 kg / 10 g
Maximum Tare Weight: Corresponds to the maximum capacity (e.g., 3 kg for 1.5/3 kg capacity, 30 kg for 15/30 kg capacity).
A/D Conversion Speed: 12 updates per second.
Internal Resolution: 1/60,000.
Display Type: LCD display, with optional backlight and rear display.
Power Source:
- Four D size 1.5V batteries (6V total).
- DC Adaptor (optional).
Communication: RS232C (optional).
Power Consumption: Approximately 0.09 Watts.
Weighing Pan Size (mm): (W)234 x (D)180.
Stainless Steel Weighing Pan (mm): (W)300 x (D)265 (optional).
Product Size (mm): (W)245 x (D)276 x (H)110.
Product Weight: 2.5 kg.

Installation and Precaution

For optimal performance and longevity, the following installation and precaution guidelines should be followed:

Placement: The scale must be placed on a flat, rigid surface free from vibrations.
Electromagnetic Interference: Avoid installing the scale near radio devices that emit strong electromagnetic fields.
Impact: Do not apply sudden impact onto the weighing pan.
Liquid Exposure: Do not spill water onto the scale.
Cleaning: Do not use cleaners that include solvent or thinner.
Periodic Inspection: This product requires obligatory periodic inspection and proofreading.

Device Components

The PW-200 scale consists of several key parts:

Platter: The top surface where items are placed for weighing.
Display: Shows the weight and various indicators.
Keypad: Includes buttons for ON/OFF, Zero, Tare, and a multi-function key (* / HOLD).
Level: An indicator to ensure the scale is properly leveled.
Adjuster: Feet that can be adjusted to level the scale.
Adaptor Port: For connecting an optional DC power adaptor.
Battery Compartment: Houses the D size batteries.
RS-232 Port: For optional serial communication.

Key Functions

The keypad provides the following functionalities:

ON/OFF Key: Powers the device on or off.
* / HOLD Key:
- Used to measure un-fixed or unstable objects.
- Can transmit weight data when the scale is in RS232 communication mode.
Tare Key:
- Sets or deletes the tare weight (weight of a container).
- When pressed, the display shows "0" and the TARE indicator turns on.
- Pressing it again turns off the TARE indicator.
Zero Key: Re-corrects the weight to zero.

Designators (Indicators)

The display includes several designators to provide status information:

ZERO: Indicates that the displayed weight is zero.
STABLE: Indicates that the displayed weight is stable.
TARE: Indicates that a tare weight has been set.
Batt: Indicates that the battery needs to be changed.

How to Use

General Weighing

Ensure "ZERO" and "STABLE" signs are on before weighing.
Place the goods on the weighing pan.
Read the correct value after the "STABLE" sign turns on.
Remove the goods from the weighing pan.

Weighing with TARE Function

Place the tare (container) on the weighing pan.
Press the "TARE" key. The weight will become "0" and the "TARE" sign will turn on.
Put the goods into the tared container.
Read the correct value after the "STABLE" sign turns on.
Remove the tare and goods from the weighing pan.
To disable tare, press the "TARE" key again. The "TARE" sign will turn off.
Alternatively, you can continue weighing with the same tare.

Weighing with HOLD Function

This function is useful for weighing unstable or un-fixed objects.

Place the object(s) on the weighing pan.
Press the "HOLD" key.
Remove the object(s) from the weighing pan.

Error Table

The scale provides error codes to help diagnose issues:

Zero (Zero initializing failure): Remove any weight from the weighing pan and restart the scale. If the problem persists, call service.
EEP (Memory IC error of the circuit): Call service.
AdC (Analogue circuit error): Call service.
PArA (Memory loading failure): Call service.

User Parameters (Distributors & Dealers Only)

The scale has user-configurable parameters accessible through a special setting mode (procedures to enter this mode are not detailed in the provided manual for end-users).

Start Up (UP-1)

1X: Enters weighing mode after showing battery voltage.
0X: Enters weighing mode after a countdown and showing battery voltage.
3X: Enters weighing mode directly.

Backlight (UP-2)

00: Not used.
10: Backlight on for 5 seconds (default).
20: Backlight on for positive and minus values.
30: Backlight always on.

RS232C (UP-3)

21: Handshake mode, Baudrate: 9600 bps (default setting).
20: Handshake mode, Baudrate: 19200 bps.
01: Stream mode at stable, Baudrate: 9600 bps.
00: Stream mode at stable, Baudrate: 19200 bps.
11: Stream mode at every A/D conversion, Baudrate: 9600 bps.
10: Stream mode at every A/D conversion, Baudrate: 19200 bps.

ECR Selection (UP-4)

00: Not used.
X1: NCI general.
X2: NCI ECR.
X3: Toledo 8231.
1X: Stream mode.
2X: Handshake mode.

Off Time Function

This function allows setting an auto power cut-off period when the scale is not in use.

0: Default (no use).
??: Configurable in seconds.
The maximum setting is 180 seconds (3 minutes).

Acom PW-200 - Page 2

Table of Contents

Related product manuals