Load Cell Marking 0745A; Special Conditions For Safe Use - Mettler Toledo 0745A Manual Del Usuario

d. Installation shall be in accordance with applicable local standards for hazardous areas.
e. The sum of the rated power Po of all excitation devices must be less than or equal to the power parameter Pi of one load cell.
f. The sum of the excitation voltage Uo of all excitation devices must be less than or equal to the voltage parameter Ui of one load cell.
g. The sum of the current Io of all excitation devices must be less than or equal to the current parameter Li of one load cell.
h. Maximum cable length 30m. For longer cables their capacitance and inductance has to be included.
Cable Length
2 (6.6 ft)
3 m (9.9 ft)
5 m (16.5 ft)
10 m (33 ft)
Per m (3.3ft)
i. In calculating the capacitance and inductance of the system, use these default values for connection cables (home-run cable, for
example) unless the actual values are known:
a. Capacitance of the connection cable: 0.2 nF per meter
b. Inductance of the connection cable: 1 μH per meter.
j. The capacitance parameter Co of the excitation device must be greater than or equal to the sum of the capacitances in the circuit (e.g.,
the capacitance of the connection cables plus the sum of the capacitances Ci of all load cells in the circuit).
k. The inductance parameter Lo of the excitation device must be greater than or equal to the sum of the inductance of the connection cables
plus the inductance Li of one load cell.
l. In an explosive atmosphere caused by air / dust mixtures, the loose ends of the cable shall be connected outside the hazardous area
or in a suitable enclosure with a degree of protection of at least IP6X in accordance with EN 60529.
m. Not following these instructions will jeopardize the explosion safety.
Note: The entity parameters of any other devices in the circuit (e.g., a Junction Box) must be taken into account in assessing the
compatibility of devices.

2.4 Load Cell Marking 0745A

Other markings are as shown in the following labels which are attached to the product. At the time of installation the appropriate box on
the left hand side of the Hazloc label must be checked with a permanent waterproof marker to indicate the applicable protection, once
selected it may not change.
For Details on temperature class / coding please see section 2.1
Load cell variations include capacity, metrological performance, cable length, label and jacket material of polyurethane or FEP.

2.5 Special Conditions for Safe Use

None for 0745A.
4
Function of Equipment
Capacitance Ci
0.5 nF
0.9 nF
1.8 nF
3.6 nF
0.2 nF
Inductance Li
2.2 μH
4.5 μH
9.1 μH
18.2 μH
1 µH
30214327F Load Cell 0745A