The TD-WI 1 Weighing Indicator is a versatile device designed for general-purpose weighing applications, offering a range of functions including counting, check-weighing, animal weighing, and preset tare. It is available with either a stainless steel or plastic housing.
Technical Specifications:
- Power Supply: The indicator operates on 220-240V AC (110V optional) at 50/60Hz. It also features a built-in rechargeable battery, with options for 6V 1.3AH or 6V 4AH.
- Display: The device comes with a 6-digit 1' LED display or a 1' LCD display.
- Max Input: The maximum input capacity is 15mV.
- Offset Range: It has an offset range of ≥0.2mV (10000 Count).
- ADC: The Analog-to-Digital Converter (ADC) uses a Σ-Δ type.
- External Resolution: The external resolution is 1/40000.
- Interface: It includes an RS-232 Output for communication.
- Stabilisation Time: The typical stabilization time is 1 second.
- Operating Temperature: The indicator can operate in temperatures ranging from 0°C to 50°C (32°F to 104°F).
- Load Cell Drive Voltage: It provides a 5V/Max 150mA drive voltage for load cells.
- Other Functions: The device includes a real-time clock and units conversion capabilities.
- Load Cells: It can support up to eight 350 ohms load cells.
Usage Features:
The TD-WI 1 offers a comprehensive set of operational features, controlled via a user-friendly keypad:
- Power On/Off: A dedicated SOFT POWER ON/OFF Key controls the device's power.
- Zeroing: The ZERO Key sets the zero point for all subsequent weighing and counting. It's typically used when the platform is empty. The scale has an automatic re-zeroing function for minor drifting. Pressing the ZERO Key when the platform is empty and showing small amounts of weight will re-zero it.
- Tare Function: The TARE Key allows users to store the current weight of a container as a tare value, displaying the net weight of the product. A specific tare value can also be entered using the keypad. To clear the tare value, empty the platform and press the TARE Key again.
- Parts Counting (KEY=1): This function allows for counting items. After taring any container, samples (10, 20, 50, 100, or 200 pieces) are placed on the scale. The MOD Key initiates counting, and the TARE Key cycles through sample sizes. The FUN Key confirms the sample size, and then the display shows the number of parts (pcs). The FUN Key can also be used to view unit weight, counts, and total weight. The MOD Key returns to normal weighing.
- Accumulation (KEY=2): The FUN Key is used for accumulation. When a stable weight is on the platform, pressing the MOD Key stores the weight in memory, displaying the number of accumulations. The indicator can store up to 200 accumulations. To view the accumulated total weight, empty the scale and press the FUN Key. To clear accumulated weights from memory, press the ZERO Key while viewing the accumulated weights.
- Holding the Weight (KEY=3): Pressing the MOD Key activates the hold function, keeping the weight value on the display after each weighing. Pressing the MOD Key again cancels this function.
- Presetting Tare Value (KEY=4): The MOD Key allows for presetting a tare value, which is then subtracted from every subsequent weighing.
- Animal Weighing (KEY=5): The MOD Key is used to set parameters for animal weighing. This includes "Stable time" (Fil n, options 1-5, with 1 being fastest and 5 slowest), "Display range" (Rang n, options 1-3, with 2 recommended), and "Leaving lock range" (if weight change exceeds this value, a new display is triggered). The FUN Key enters or cancels this function.
- Check-Weighing: This feature triggers an alarm when the weight on the scale meets or exceeds predefined high and low limits. Users can set hi-limit and low-limit values. There are three check modes (BEEP 1, BEEP 2, BEEP 3) that determine if and when a beep sounds. BEEP 1 provides visual HI/LO indicators without a beep. BEEP 2 beeps when the weight is eligible, and BEEP 3 beeps when it's not eligible. The check-weighing function requires the weight to be greater than 9 scale divisions. To disable it, set both high and low limits to zero using the UNIT Key.
- Print (KEY=2): When "P10 PS" is set to "RS Prt" for the Serial Printer, pressing the MOD Key during weighing will print the current weight data.
- Unit Conversion: The UNIT Key allows for setting unit conversion coefficients and performing unit conversion during weighing.
Functions and Parameters Setting (Accessed via ZERO Key during self-checking):
- "F1 CLK" (Date and Time Setting): Press FUN Key to display and set time and date. ZERO Key shifts digits, TARE Key increments values, MOD Key cancels, and FUN Key enters/exits. Date format can be selected (YY-MM-DD, MM-DD-YY, DD-MM-YY).
- "F2 SLP" (Sleep Function for LED Version): Sets the indicator's sleep behavior. "SLP no" disables sleep. "SLP 3/5/10/15" sets sleep after 3/5/10/15 minutes. Options include "off" (power cut) or "dot" (only a dot displayed, weight change wakes up the indicator).
- "F2 BK" (Backlight Mode Setting for LCD Version): Options are "Auto mode" (backlight off when inactive), "Off mode" (backlight always off), and "On mode" (backlight always on).
- "F3 KEY" (MOD Key Setting): Configures the MOD Key's function for counting, gross/net display, accumulation/print, hold, preset tare, or animal weighing parameters.
- "F4 CHK" (Check-weighing Setting): Configures the check-weighing beep options (1/2/3).
- "F5 Brt" (Adjust Brightness for LED Display): Selects brightness level from 1-8 (8 is brightest).
- "F5 INP" (Display Internal Counts for LCD Version): Used to check load cell connection and ADC circuit status. Press TARE to exit.
- "F6 INP" (Display Internal Counts for LED Version): Same as "F5 INP".
- "F6 CAL" (Calibration for LCD Version): Calibration function.
- "F7 CAL" (Calibration): Initiated by pressing FUN Key when "PN" is displayed (password 0000).
- "P1 SP" (AD Converting Speed): Options 1-5 (1 fastest, 5 slowest).
- "P2 AUT" (Power On Zero Maintenance): Options 0/2/5/10/20/50/100% of capacity.
- "P3 RAN" (Manually Zero Maintenance): Options 2/4/10/20/50/100% of capacity.
- "P4 AZ" (Auto Zero Maintenance): Options 0.5d/1d/2d/4d ("d" means division).
- "P5 DEC" (Decimal Point): Options 0/0.0/0.00/0.000/0.0000.
- "P6 CAP" (Capacity): Sets the scale's capacity.
- "P7 INC" (Division Increment): Options 1/2/5/10/20/50.
- Important: P5, P6, P7 must be set in order before calibration.
- "P8 CAL" (Calibration Execution): After all settings, press FUN Key when "P8 CAL" is displayed. Follow prompts: "noLoAd" (empty platform, confirm with FUN Key), "XXXXXX" (set target calibration weight, confirm with FUN Key), "LoAd" (place calibration weight, confirm with FUN Key). The indicator then enters weighing state.
- "P9 INT" (Initialize Memory): Resets memory to ex-work state.
- "P10 RS" (Communication Mode): Sets RS232C serial port mode. Options: "RS Cot" (continuous data for remote/external display), "RS Prt" (serial printer), "RS Aut" (transmission after every weighing).
- "P11 FL" (Weight Adjustment): For acceleration of gravity.
- "P12 KB" (Keyboard Sound): Toggles keyboard sound on/off.
- "P13 UT" (Unit Setting): Sets units (Lb, U1, U2). U1/U2 can be "ON" or "OFF". If "ON", conversion coefficient can be set via UNIT Key during self-checking or within the P13 UT menu.
- "P14 Pn" (Password Setting): Press FUN to display "P1 ----", set password, confirm with FUN. Displays "P2 ----" for re-confirmation. "Done" indicates success.
RS-232 Output:
The RS-232 interface provides weighing data output with specifications: 1200/2400/4800/9600/19200 bps, 1 stop bit, 8 data bits, No Parity.
- Mode 1: Continue Output: Data is continuously transmitted.
- Mode 2: Automatic Output: Similar to continuous output, but data is transferred after weighing, when the display returns to zero after removing goods.
- Data Format: Includes ST (stable/unstable), GS (gross weight), NT (net weight), weighing value, unit (kg, lb), and HEX codes for enter/next line.
- Example Output: Shows date, time, No., TARE, NET, GROSS, and TOTAL values.
Maintenance Features (Error Codes):
The device provides error codes to assist with troubleshooting:
- -- OL --: Indicates "Over range." Resolution: Remove weight from the scale.
- Err 1/Err 2: Indicates "Date and Time not right." Resolution: Reset again.
- Err 4: Indicates "Zero Setting Error." This occurs if the scale was outside the normal zero setting range during power-on or when the ZERO Key was pressed. Resolution: Remove weight from the scale and try again. Use the TARE Key to set the display to zero if needed.
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