Technical Manual MIVI 9612
Réf. 254-31/0
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1.5.2. Modification of the previous calibration
The device has been programmed in order to answer to your needs. These features
programming steps are noticed on the features specification pages at the end of this document.
At first, be sure that the modification is necessary, and not consecutive of a non
coherent comparative information (different measuring conditions, bad standards, inaccurate
or wrong laboratory measurements,…).
The calibration parameters are protected and can only be modified with the security code.
For modifications of calibration, contact your distributor.
1.6. Directives and Standards
1.6.1. Certification ATEX
MIVI sensors are in agreement with 94/9/EC directive (ATEX) for equipments installed in
explosive gas atmospheres or in presence of combustible dust :
II 2G (gas) or
II 2D (dust)
Ex d IIC T1 to T6 : gas
Ex tD A21 IP67 T75°C, T90°C, T125°C, T190°C, T290°C, T300°C : dust
Be sure the sensor’s certification is in accordance with the security level required on your
process location : Area classification, equipments group, protection method, gas type, temperature
codes…
Area classification and equipments installation rules are detailed into IEC 7910 and EN 60 079
standards for gas or EN 61 241 standards for dust.
To always keep the maximum security level of the viscometer, don’t open it. Furthermore, we
advice to install the sensor with the cable gland orientated to the floor.
Check periodically information indicated on the sensor’s identification plate are still visible.
1.6.2. Installation in hazardous area
Here are the possible ways to install MIVI 9601sensors in hazardous area.
SAFE AREA
HAZARDOUS AREA
SAFE AREA
HAZARDOUS AREA
(1)
(2)
(3)
(1) : non-exproof connectors
(2) : exproof box
(3) : exproof connection box
Ex
Ex
IMPORTANT : Always connect the sensor's body (screw on the top of the body) to the ground.
