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Requirements in Hazardous
Locations
The original language of these instructions is US English.
The data that follows is only applicable to equipment with
the specified marking details.
The equipment for use in potentially explosive
atmospheres is listed for use in 'Divisions' or 'Zones'
classified hazardous locations.
Read and understand all the related data before installing
and using the equipment. This includes: all local safety
procedures and installation standards (for example: U.S.
National Electrical Code NFPA 70 or Canadian Electrical
Code C22.1), this document, the product datasheet or
specification drawing (if applicable) and control drawing
X-A3-0417.
Copies of the FM Approvals type-examination certificates
are available from the manufacturer.
To install and use the equipment in potentially explosive
atmospheres ("hazardous locations"), use only approved
engineers who have the necessary skills and qualifications.
WARNING
Do not use tools on the
pressure sensor that might cause incendive
sparks - this can cause an explosion.
Do not do live maintenance while an explosive
atmosphere is present – this can cause an
explosion. Use a safe work procedure. Refer
to "Connections to Other Equipment" for
permitted work.
CAUTION
Do not press or pierce the
silicone gel around the printed circuit board
and electronic components.
Marking Details
Refer to Figure A1, and the explanation below:
1. Product description.
2. Model number. Refer to the product datasheet for
identification.
Note: If the model number is followed by four or eight
numbers, '-####' or '-########', refer to
manufacturer's specification drawing E-A3-#### or
########.
3. Accuracy specification. Refer to the product datasheet
or, if applicable, specification drawing.
4. Input: Pressure range limits.
5. Input: Power supply voltage range and current limits.
6. Output: Signal voltage or current range.
7. Serial number; date of manufacture.
8. Reserved for other certification markings (if applicable).
9. Hazardous location markings.
Note: Models 58## and 59## are additionally marked
'TYPE 4X'.
10. ANSI/ISA 12.27.01-2003 process seal markings.
11. Certificate numbers.
12. Certificate holder's name and address.
13. Country of assembly: Made in UK/China.
Pressure Sensor Materials
The materials used for the primary enclosure and pressure
bearing surfaces are identified in the product datasheet or,
if applicable, the specification drawing.
Make sure that the materials are applicable for the
installation.
Installation
Before using the equipment, remove the plastic/rubber
protection cap from the pressure connector.
Division 2 Hazardous (Classified) Locations
In Canada, installation of models with parallel (e.g. M20)
electrical conduit threads is not permitted in Division 2
hazardous (classified) locations.
External Temperature Limits
The permitted ambient temperature range for the
equipment is -40°C to +80°C. Make sure the process media
also stays within these limits.
Process Seal
The pressure module contained within the equipment has
been assessed as a 'single seal' device in accordance with
ANSI/ISA 12.27.01-2003 over a temperature range of
-40°C to +125°C.
Make sure the process media stays within -40°C to +80°C
and the maximum pressure indicated by the product
markings.
Position
Attach the equipment in a safe configuration that prevents
unwanted stress (vibration, physical impact, shock,
mechanical and thermal stresses). Do not install the
equipment where it can be damaged by a material that
causes corrosion. Provide additional protection for
equipment that may be damaged in service.
Ingress Protection
As specified by the certification, the enclosure has a
minimum ingress protection (IP) when correctly installed:
Model
500# only
5### (except 500#)
Models 58## and 59##: As specified by the certification,
the enclosure has an enclosure type rating of 4X when
correctly installed.
Note: The enclosure can have a higher IP / enclosure type
rating, but this has not been assessed by FM Approvals –
refer to the datasheet or, if applicable, the specification
drawing.
When installed, electrical connectors and wiring must
provide a minimum ingress protection rating of IP20 for
indoor locations and IP54 for outdoor locations.
Some models feature a white PTFE vent filter in the wall of
the enclosure. Make sure the vent filter is correctly installed
and is flush with the enclosure body.
Identification of Markings Put Into Use
The product may have been provided with markings for
more than one method of protection. The method or
methods put into use must be indicated, by marking the
adjacent box (see Figure A1, items 8 or 9).
Models 50## and 58##: The wall of the enclosure may
only be 0.5 mm thick. The method of marking must not
dent, pierce or damage the product enclosure. The use of
impact stamps and engraving is not permitted.
Models 59##: The wall of the enclosure may only be
2.4 mm thick. The method of marking must not dent, pierce
1. The requirements of "External Temperature Limits" apply.
English–UNIK5000 Installation Instructions | 1
Ingress Protection
IP20 minimum
IP64 minimum
Copyright 2011 Baker Hughes Company.
1
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