Introduction; Instruction And Operation Manual For Atex; Year Of Manufacture; Function Of Equipment - Mettler Toledo SLP845 Bedienungsanleitung

1 Introduction

1.1

Instruction and Operation Manual for ATEX

This section covers only the ATEX-relevant aspects of the product.
Refer to SLP845 ATEX certificate DEKRA 13ATEX0045 or DEKRA 13ATEX0046. When load cells are considered in type of protection
non-sparking Ex nA, they need to be fitted in an enclosure that complies with the equipment's of clause 6 of EN60079-15. With a
permanent marker place a mark (√) in the box on the load cell label to indicate the applicable protection (DEKRA 13ATEX0045 or DEKRA
13ATEX0046). Once selected it may not be changed.
DEKRA 13ATEX0045
II 2 G Ex ib IIC T4 Gb
II 2 D Ex ib IIIC T100°C Db
Ui = 20V ; li = 600mA ; Pi = 1.25W
Ci = 6nF ; Li = 30µH
EN 60079-0 2012 ; EN 60079-11 2012

1.2 Year of Manufacture

The year of manufacture is indicated by the 3
The 3 and 4 Character
rd th
Year

2 Function of Equipment

The SLP845 can be used as category 2 or 3 equipment for hazardous Gas and hazardous Dust environments (Zone 1, 2, 21 and 22).

2.1 Details on Temperature Class / Coding

The following table shows the relationship between maximum total power Pi and maximum ambient temperature.
Temperature class/coding
T4 (gas)
T100°C (dust)

2.2 Connection

Color Code:
GREEN
BLACK
WHITE
RED
YELLOW
BLUE
YELLOW-LONG

2.3 Information for Connections

a. The resistance between all safety ground connections and the system grounding electrode must not exceed 1 ohm.
b. If applying as intrinsically safe, the load cells must be interfaced with an approved safety barrier matching the entity parameter of the
load cells.
c. If applying as intrinsically safe, equipment connected to the safe side of the barrier shall not be powered by or generate more than
250VAC.
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.
30093891D Load Cell SLP845
DEKRA 13ATEX0046
II 3 G Ex ic IIC T4 Gc
II 3 G Ex nA IIC T4 Gc
II 3 D Ex tc IIIC T100°C Dc
Ui = 20V ; li = 600mA ; Pi = 1.25W
Ci = 6nF ; Li = 30µH
EN 60079-0 2012 ; EN 60079-11 2012
EN 60079-15 2010 ; EN 60079-31 2009
and 4 character of the load cell Serial Number (S/N) as follows:
rd th
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
Ui = 20 V, Pi = 1.25W
- 40°C ≤ Ta ≤ 50°C
- 40°C ≤ Ta ≤ 50°C
+ Excitation
- Excitation
+ Signal
- Signal
+Sense
-Sense
Shield
3
Introduction