Laumas TLM8 weighing transmitter

3.3 Load distribution analysis and backup archiving

TLM8 provides a graphical load distribution display interface that allows real-time viewing of the force ratios of 8 channels. This function is particularly important in situations where uniform force is required, such as material tanks, hoppers, and platform scales - engineers can quickly detect that a support point is suspended or overloaded, preventing structural damage.

The load distribution data of all channels can be regularly archived, queried, and printed for quality traceability.

Advanced diagnostic and maintenance functions

4.1 Independent channel diagnosis

Each weighing sensor input is equipped with a dedicated diagnostic function, which can be selected according to the system type:

Load automatic diagnosis: Automatically detect whether the sensor signal is reasonable during the loading process, and determine whether there is a wire break, short circuit, or signal out of range.

Zero point automatic diagnosis: detect whether the zero drift exceeds the allowable range during no-load operation, and determine whether the sensor is experiencing creep or abnormal temperature drift.

The diagnostic results can be directly displayed on the local display screen or sent to the PLC or upper computer through a communication interface.

4.2 Event Archiving

TLM8 automatically records the last 50 important events, including:

Zero point setting/calibration

Digital Balance Operation

Alarm triggered/restored

Tare (peeling) operation

All events can be stored, queried, and printed, providing objective evidence for quality management systems such as ISO 9001.

4.3 Tilt angle compensation (optional function, requires external inclinometer)

For weighing systems installed on mobile devices or non level ground, TLM8 can accept inclinometer signals (connected via RS485) and dynamically compensate for weight within a compensation range of ± 10 degrees. Even if the scale body is tilted, it can still output accurate weight values. This compensation also applies to legal for trade certification.

Weighing function and ingredient control program

5.1 Core weighing function

Theoretical calibration and physical calibration: Sensor parameters can be input through the keyboard for theoretical calibration, or standard weights can be used for physical calibration. It supports up to 8 points of linearization, significantly improving the accuracy of nonlinear sensors.

Digital filtering: adjustable filtering depth, effectively suppressing weight fluctuations caused by vibration and mechanical impact.

Stable weight condition judgment: The allowable fluctuation range and time window can be defined, and the "stable" flag can be output.

Standard weighing functions include automatic zeroing, zero tracking, semi-automatic skinning, preset skinning, and semi-automatic zeroing upon startup.

5.2 Single product ingredient (batch) program

TLM8 has built-in control logic specifically designed for single product ingredients, allowing for simple quantitative feeding control without the need for an external PLC. Main features:

Formula can be set (target value, fast/slow addition switching point, drop value, etc.).

Automatic drop calculation: Automatically adjust the lead time after each ingredient is added to improve batch consistency.

Tolerance error control: Over tolerance alarm and stop.

Fine blending mode: High precision micro replenishment can be achieved through slow feeding or tapping function.

Consumption storage: Record the actual discharge amount of each ingredient for easy material inventory management.

Ingredient data printing: Print ingredient records through RS232 (direct connection) or RS485 (external printer).

External startup: Ingredients can be started through external digital input or fieldbus commands.

Automatically peel at startup: Ensure that the measurement starts from the container tare weight each time.

This program is very suitable for applications such as small-scale ingredient systems, color masterbatch addition, animal feed distribution, etc., and can significantly reduce the requirements for PLC programming.

Legal for Trade certification version

For applications that require trade settlement, TLM8 can provide a certified version (to be specified at the time of ordering). The certified version has the following characteristics:

Parameter protection: Key measurement parameters (such as calibration coefficients and angle difference coefficients) are protected by passwords, hardware switches, or fieldbus write protection to prevent unauthorized modifications.

Weight subdivision display: supports 1/10E division value display.

Three operating modes: single interval, multiple ranges, and multi interval, suitable for different accuracy requirements.

Net weight/tare zero tracking.

Calibration: requires authorization or physical sealing.

Alibi memory (optional): records the raw data of all weighing transactions, meeting the requirements of weighing regulations for data storage.

Communication and System Integration

7.1 RS485 network

The RS485 interface of TLM8 supports up to 32 instruments to be connected to the same bus (without repeaters); If a repeater is used, it can reach up to 99 units. The protocol is Modbus RTU or Laumas ASCII and can communicate with the following devices: