XA02890C/07/EN/02.23-00
716139042023-05-14

ProductsSolutions

Safety Instructions
Memosens Wave CKI50
for measuring color, color variations
ATEX, IECEx:
Ex ia op is/db [ia Ga] IIC T6 Ga/Gb0Services

Memosens Wave CKI50

XA02890C

Memosens Wave CKI50
for measuring color, color variations
Table of contents
Associated documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Supplementary documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

Certificates and declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Temperature tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6Installation conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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Associated documentation

Supplementary
documentation

Certificates and declarations

Memosens Wave CKI50

This document is an integral part of Operating Instructions BA01932C.

Competence Brochure CP00021Z• Explosion Protection: Guidelines and General Principles• www.endress.com

The certificates and declarations of conformity are available in the Downloads area of theEndress+Hauser website:www.endress.com/download
EU declaration of conformity
EU_01016
EU type-examination certificate
TÜV 22 ATEX 8769 X
IECEx certificate
IECEx TUR 22.0005X

Identification

The nameplate provides you with the following information on your device:• Manufacturer identification• Extended order code
• Serial number• Safety information and warnings‣ Compare the information on the nameplate with the order.
Type codeType- 831)

*2)

Optional**3)*4)

Ex relevance1)

Approval:
ATEX, IECEx
II 1/2G Ex ia op is/db [ia Ga] IIC T6...T3 Ga/Gb

No Ex relevance2)

Sensor communication

3)

Application

4)

Calibration/validation

5)

Measuring headEx relevance6)

Material, Roughness; Length: 316L/1.4404, Ra = 0.8; L = 48.5mm wetted

No Ex relevance7)

Diameter Measuring Head8)

Window material

9)

Optical path length

10)

Process connection

11)

Seals Wetted

12)

Adaption cable

13)

Cable length

CKI50

4Version*5)

116)

*7)

**8)

**9)

**10)

*11)

*12)

*13)

**14)

+ 15)

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Memosens Wave CKI50

XA02890C

14)

Device model

15)

Optional features, e.g. test certificates or other certificates/declarations

Certificates and approvals
II 1/2G Ex ia op is/db [ia Ga] IIC T6...T3 Ga/Gb
The product meets the requirements of the "IEC Certification Scheme for Explosive Atmospheres".
This is verified by compliance with the standards listed in the IECEx certificate. The IECEx certificate
can be viewed on the following website: www.iecex.com.
Notified bodyTÜV Rheinland Industrie Service GmbH

Safety instructions• The procedures for electrical connection, installation, operation and maintenance described in theOperating Instructions must be followed.
• The maximum permitted cable length is 100 m (328.1 ft).
• Pay attention to the regulations for electrical installations in explosive atmospheres (EN60079-14) when using the devices and sensors.
• A grounding cable with cross section of at least 4 mm2 (0.006 in2) is needed for the installation.
An additional cable lug is required if the cable diameter is too large.
• Integration into potential equalization is carried out via the installation.
• If the process sensor exhibits external damage, the equipment must be immediately taken out ofservice. Under no circumstances are modifications permitted on the process sensor thatcompromise the explosion protection of the equipment.
• The process sensor can heat up during operation and is cooled mainly through heat dissipation on
the surface of the housing. If this heat transfer is restricted, e.g. by a layer of dust or an additional
cover, the maximum ambient conditions cannot be observed and the operator must takeappropriate action.
• If the device comes into contact with aggressive substances, the user must adopt appropriate
protective measures to ensure that the confirmed level of protection of the measuring system is
not compromised. Examples of aggressive substances include acidic liquids or gases that corrode
metal, or solvents that can damage polymeric materials. Appropriate protective measures include
regular checks as part of routine inspections, or checks to verify the resistance of materials to
specific chemicals based on the material data sheet.
Care must be taken to ensure that the stainless steel, sapphire glass, seals or cable of the sensor
are not exposed to corrosive chemicals or mechanical damage.
• The two RS-485 cables (blue and white) must be connected to the terminals provided.
For use in hazardous areas: Note that the communication line (RS-485 connection) has no internalsafety mechanism. Incorrect connection may result in uncontrolled power consumption by theprocess sensor.
• Do not separate when energized.
• Do not open the device in hazardous areas.
• The process sensor can only be operated with a protective mechanism which has a 1500 A
breaking capacity. The maximum input power of the sensor must be limited to the specified
maximum value by a current limitation (fuse or electronic).
This device has been designed and manufactured in accordance with Directive 2014/34/EU ofFebruary 26, 2014 and also complies with the following standards:• EN IEC 60079-0:2018/ IEC 60079-0:2017 Explosive atmospheres - Part 0: Equipment - Generalrequirements• EN 60079-1:2014/ IEC 60079-1:2014 Equipment protection by flameproof enclosures "d"• EN 60079-11:2012 / IEC 60079-11:2011 + Cor.:2012 Explosive atmospheres - Part 11:
Equipment protection by intrinsic safety "i"• EN 60079-26:2015/ IEC 60079-26:2014 Equipment with Equipment Protection Level (EPL) Ga• EN 60079-28:2015/ IEC 60079-28:2015 Protection of equipment and transmission systems
using optical radiation

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Temperature tables

Memosens Wave CKI50

Hazardous area

Ambient temperature Ta

Process temperature Tp

Gas–20 °C (–4 °F) ≤ Ta ≤ 50 °C (122 °F) (T6)
–20 °C (–4 °F) ≤ Ta ≤ 50 °C (122 °F) (T5)–20 °C (–4 °F) ≤ Ta ≤ 50 °C (122 °F) (T4)–20 °C (–4 °F) ≤ Ta ≤ 50 °C (122 °F) (T3)–20 °C (–4 °F) ≤ Tp ≤ 50 °C (122 °F) (T6)
–20 °C (–4 °F) ≤ Tp ≤ 65 °C (149 °F) (T5)–20 °C (–4 °F) ≤ Tp ≤ 100 °C (212 °F) (T4)–20 °C (–4 °F) ≤ Tp ≤ 140 °C (284 °F) (T3)

The temperature table above only applies under the following installation conditions, which aredescribed in the graphic below →  1,  7. If the installation conditions cannot be met, themaximum process temperature Tp must not exceed the maximum ambient temperature Ta.

Connections

Ex-specification
Parameter

Value

Nominal voltage

24 VDC

Maximum current via fuse

0.63 A

Maximum permitted power Pmax for safety purposes

10 W, maximum 16.7 W

Protection class

IP69

Minimum cable length

2 m (6.56 ft)

Size (length, diameter)

361 mm (14.21 in), 114 mm (4.49 in)

Housing

stainless steel 1.4404 or 1.4435

Volume< 2 l (0.53 gal) (approx. 1.5 l (0.4 gal))

The process sensor is connected to a transmitter. A junction box can be optionally installed between
the process sensor and the transmitter. The junction box is suitable for use in hazardous areas (Zone1, 2 for gas) and consists of a 1-1 terminal strip. The cable cores are clamped individually on theterminal strip. Depending on the transmitter certificate, it can also be installed in hazardous areas ormust be mounted outside potentially hazardous areas.
Process sensor CKI50 is intended for connection to transmitter CM44P, which does not have anIECEx/ATEX approval. The transmitter nevertheless meets the safety requirements for connecting
process sensor CKI50 under the specified conditions. The electrical current of the CM44P is limited
to the permitted 16.7 W at 24 VDC. In addition, the transmitter displays the internal temperature
values and provides information about other values pertaining to process sensor CKI50.

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Memosens Wave CKI50

XA02890C

Installation conditions

AB

TpTaA0050071

1AB
Ta
Tp

Endress+Hauser

Installation conditions
Zone 0Zone 1
Ambient temperature
Process temperature7

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