1.2.3 Hazardous Area Markings：
1.3 Product identification and technical Specifications
Load cell specific information is printed on the Calibration Certificate. If this certificate is not
included, contact your supplier. Cable colour codes should be checked against the Calibration
Certificate.
2. Specific conditions for safe use
⑴ Using the box provided on the nameplate, the User shall permanently mark the type of protection
chosen for the specific installation. Once the type of protection has been marked it shall not be
changed.
⑵ The load cells do not have an earth ground terminal or conductor. The load cells shall be earth
grounded as part of the final installation.
⑶ The non-metallic surfaces on the Load Cells enclosure may cause risk from electrostatic discharge.
Avoid installation that could cause electrostatic build-up, and only clean with a damp cloth.
3. Installation
Install in hazardous (classified) locations / explosive atmospheres per drawing 521302.
Never use load cells in a potentially explosive atmosphere which are not correctly certified. Use
shunt-diode barriers for load cell installation in potentially explosive atmospheres. When using more
than one barrier channel in a circuit, ensure that the combination of voltages and currents can be
safely applied in that particular hazardous area. Install load cells in accordance with the applicable
EU. The circuit is to be considered as being connected to earth due to surge protection.
To prevent load cell from being damaged during installation, it is strongly recommended to use
dummy load cells or mounting assemblies that can be “locked”. Load cells should be handled with
care, especially those with a low rated capacity or with metal bellows construction. When connecting
polarized shunt-diode barriers, do not connect the wrong polarity. It will destroy the barrier! Cables
used must always be suitable for the environment in which they are to be used. Many indicators
compensate for line voltage losses by increasing their voltage output. Do not pass the compensation
limit of the indicator! Never carry load cells by their cables.
Avoided electric welding after installation of load cells. If welding is necessary and the load cells can
not be removed then disconnect each individual load cell cable from the junction box or measuring
device. In order to avoid a current path through the load cells, place an earthing clamp in the close
proximity of the weld. Furthermore, connect a flexible copper lead over each load cell.
Never use mounting bolts to pull uneven surfaces together-use shims as appropriate. Never use
excessive force when fitting or tightening mounting bolts or hardware, especially on low capacity
cells. Do not twist “S” cells when tightening threaded fittings.
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