XA01363P-B/00/EN/02.20
71500748
2020-11-23

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Safety Instructions
Cerabar PMC21, PMP21, PMP23
Ex ia IIC T4 Ga/Gb
Ex ia IIC T4 Gb

Document: XA01363P-B
Safety instructions for electrical apparatus for explosion-hazardous areas →  3

Cerabar PMC21, PMP21, PMP23

XA01363P-B

Cerabar PMC21, PMP21, PMP23

Table of contents
Associated documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Supplementary documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

Manufacturer's certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Manufacturer address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Extended order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety instructions: General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety instructions: Special conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

Safety instructions: Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety instructions: Zone 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Temperature tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connection data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Endress+Hauser

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XA01363P-B

Associated documentation

Cerabar PMC21, PMP21, PMP23

This document is an integral part of the following Operating Instructions:
BA01271P/00

Supplementary
documentation

Explosion-protection brochure: CP00021Z/11

Manufacturer's certificates

NEPSI Declaration of Conformity

The Explosion-protection brochure is available:• In the download area of the Endress+Hauser website:www.endress.com -> Downloads -> Media Type: Documentation ->Documentation Type: Brochures and catalogs -> Text Search: CP00021Z• On the CD for devices with CD-based documentation

Certificate number:
GYJ20.1351
Affixing the certificate number certifies conformity with the following standards (depending on thedevice version):• GB3836.1-2010• GB3836.4-2010• GB3836.20-2010

Manufacturer address

Endress+Hauser SE+Co. KG
Hauptstraße 179689 Maulburg, Germany
Address of the manufacturing plant: See nameplate.

Extended order code

The extended order code is indicated on the nameplate, which is affixed to the device in such a waythat it is clearly visible. Additional information about the nameplate is provided in the associatedOperating Instructions.
Structure of the extended order code
PMC21, PMP2x(Device type)–*************(Basic specifications)+A*B*C*D*E*F*G*..
(Optional specifications)* = Placeholder
At this position, an option (number or letter) selected from the specification is displayed
instead of the placeholders.

Basic specifications
The features that are absolutely essential for the device (mandatory features) are specified in thebasic specifications. The number of positions depends on the number of features available.
The selected option of a feature can consist of several positions.
Optional specifications
The optional specifications describe additional features for the device (optional features).
The number of positions depends on the number of features available. The features have a 2-digit
structure to aid identification (e.g. JA). The first digit (ID) stands for the feature group and consistsof a number or a letter (e.g. J = Test, Certificate). The second digit constitutes the value that standsfor the feature within the group (e.g. A = 3.1 material (wetted parts), inspection certificate).

4Endress+Hauser

Cerabar PMC21, PMP21, PMP23

XA01363P-B

More detailed information about the device is provided in the following tables. These tables describe
the individual positions and IDs in the extended order code which are relevant to hazardous
locations.
Extended order code: Cerabar
The following specifications reproduce an extract from the product structure and are used toassign:• This documentation to the device (using the extended order code on the nameplate).
• The device options cited in the document.
Device type
PMC21, PMP21, PMP23
Basic specifications
Position 1, 2 (Approval)
Selected option
PMC21
PMP2x

Description
NANEPSI Ex ia IIC T4 Ga/Gb
NEPSI Ex ia IIC T4 Gb

Position 3 (Output)
Selected option
PMC21
PMP2x

Description
1

4 to 20 mA

Position 4 (Electrical Connection)
Selected option
PMC21
PMP2x

PMP23

Description
A

Cable 5 m, IP66/68 NEMA Type 4X/6P Encl.

B

Cable 10 m, IP66/68 NEMA Type 4X/6P Encl.

C

Cable 25 m, IP66/68 NEMA Type 4X/6P Encl.

M

Plug M12, IP65/67 NEMA Type 4X Encl.

U

Valve plug ISO4400 M16, IP65 NEMA Type 4X Encl.

V

Valve plug ISO4400 NPT1/2, IP65 NEMA Type 4X Encl.

NPlug M12, IP66/69 NEMA Type 4X Encl.

Optional specifications
No options specific to hazardous locations are available.

Endress+Hauser

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XA01363P-B

Cerabar PMC21, PMP21, PMP23

Safety instructions: General• Staff must meet the following conditions for mounting, electrical installation, commissioning andmaintenance of the device:• Be suitably qualified for their role and the tasks they perform• Be trained in explosion protection• Be familiar with national regulations• Install the device according to the manufacturer's instructions and national regulations.
• For installation, use and maintenance of the device, users must also observe the requirements
stated in the Operating Instructions and the standards:• GB 50257-2014: "Code for construction and acceptance of electric device for explosion
atmospheres and fire hazard electrical equipment installation engineering".
• GB 3836.13-2013: "Explosive atmospheres, Part 13: Equipment repair, overhaul andreclamation".
• GB/T 3836.15-2017: "Explosive atmospheres, Part 15: Electrical installations design, selectionand erection".
• GB/T 3836.16-2017: "Explosive atmospheres, Part 16: Electrical installations inspection andmaintenance".
• GB/T 3836.18-2017: "Explosive atmospheres, Part 18: Intrinsically safe electrical systems".
• Only use the device in media to which the wetted materials have sufficient durability.
• Avoid electrostatic charging:• Of plastic surfaces (e.g. housing, sensor element, special varnishing, attached additionalplates, ..)• Of isolated capacities (e.g. isolated metallic plates)

Safety instructions:
Special conditionsIn the event of additional or alternative special varnishing on the housing or other metal parts:• Observe the danger of electrostatic charging and discharge.
• Do not rub surfaces with a dry cloth.

Safety instructions:
Installation

A

2
31

4
5A0031218

1A
1
2
34
5

6

Zone 1Tank; Zone 0
Certified associated apparatus
Transmitter housing
Potential equalization line
Potential equalization

Endress+Hauser

Cerabar PMC21, PMP21, PMP23

XA01363P-B

Intrinsic safety• When the device is connected to certified intrinsically safe circuits of Category Ex ib for Equipment
Groups IIC and IIB, the type of protection changes to Ex ib IIC and Ex ib IIB. Do not operate thesensor in Zone 0 if connecting to an intrinsically safe circuit of Category Ex ib.
• The intrinsically safe input power circuit of the device is isolated from ground. The dielectricstrength is at least 500 Vrms.
Potential equalization
If the potential equalization cannot be guaranteed by the installation: In order to avoid electrostatic
charging, integrate metallic parts of the housing into the potential equalization.

Safety instructions: Zone 0• In the event of potentially explosive vapor/air mixtures, only operate the device under atmosphericconditions.
• Temperature: –20 to +60 °C• Pressure: 80 to 110 kPa (0.8 to 1.1 bar)
• Air with normal oxygen content, usually 21 % (V/V)• If no potentially explosive mixtures are present, or if additional protective measures have beentaken, the device may also be operated under non-atmospheric conditions in accordance with themanufacturer's specifications.
• Associated devices with galvanic isolation between the intrinsically safe and non-intrinsically safe
circuits are preferred.

Temperature tables

Temperature class

Process temperature Tp(process)Ambient temperature Ta (ambient): housing

T4≤ 100 °C–40 °C ≤ Ta ≤ +70 °C

Connection data

Electrical dataUi ≤ 30 V
Ii ≤ 100 mA
Pi ≤ 0.8 W
Ci ≤ 11.6 nF
Li = 0Endress+Hauser

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71500748

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