Nivus NivuMaster Série Manuel D'instruction page 38

SCHEDULE
EU-TYPE EXAMINATION CERTIFICATE
13 DESCRIPTION OF EQUIPMENT
The Nivus P Series of Ultrasonic Level Sensors are designed as level measurement sensors used in level
measurement systems. The sensors in the series differ only in the size of transducer crystal used and
the frequency of operation. The equipment comprises a printed circuit board and a piezo electric crystal
transducer; these are all housed inside a plastic enclosure and then totally encapsulated. An integral
cable provides the connection facilities to the external circuits.
The sensors have been assessed with the following input parameters:
Rated input voltage
Maximum input power = 1.5 W
The sensors have no internal fuse or any other components that will guarantee its suitability for
connection to a prospective short circuit current of 4000A. Such components must be provided in the
external equipment to which the sensors are to be connected.
Variation 1 - This variation introduced the following change:
i. The inclusion of the Model P 40 into the range of Pulsar dB Series of Ultrasonic Level Sensors.
Variation 2 - This variation introduced the following changes:
i. Modifications to the printed circuit board (PCB) to form a dB Mk2 circuit board.
ii. To permit he use of the dB Mk2 circuit board in all previous models within the P series of
Ultrasonic Level Sensors.
iii. The inclusion of the Model P 6 Mk2, standard, and the P 6 Mk2, threaded nose versions into the
range of Nivus P Series of Ultrasonic Level Sensors.
Variation 3 - This variation introduced the following change:
i. The introduction of minor changes of the printed circuit board and parts list.
Variation 4 - This variation introduced the following change:
i. To permit the enclosure used in the construction of the sensor to be made from an alternative,
plastic material.
Variation 5 - This variation introduced the following changes:
i. An alternative PCB design (db Burst Drive) to be used in the existing P transducer range.
ii. A different method for the connection of the cable screen to earth.
iii. A change of details regarding the encapsulation used for the piezo section of the design.
Variation 6 - This variation introduced the following changes:
i. The recognition of the P-40 version of the equipment.
14 DESCRIPTIVE DOCUMENTS
14.1 Drawings
Refer to Certificate Annexe.
DQD 544.11 Rev 2020-10-23 This certificate and its schedules may only be reproduced in its entirety and without change
= 24 V
CSA Group Netherlands B.V.
Utrechtseweg 310, Building B42,
6812AR, Netherlands
Page 2 of 3
Sira 03ATEX5277X
Issue 2