XA03140C/07/EN/01.23-00
716208142023-07-22

ProductsSolutions

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

Memosens Wave CKI50

XA03140C

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

4Certificates and declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

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XA03140C

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
UK declaration of conformity
UK_00501
UK type-examination certificate
CML 22UKEX1423X

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 code

4

TypeVersion

CKI50U61)

Optional**3)*4)

Ex relevance1)

Approval:
UKEx
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 head

Ex 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 length14)

Device model

15)

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

-*2)

*5)

116)

*7)

**8)

**9)

**10)

*11)

*12)

*13)

**14)

+15)

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Memosens Wave CKI50

XA03140C

Certificates and approvals
II 1/2G Ex ia op is/db [ia Ga] IIC T6...T3 Ga/Gb
Notified bodyEurofins E&E CML Limited (UK)

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 tospecific 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 SI 2016 No. 1107 andalso complies with the following standards:• EN IEC 60079-0:2018/ IEC 60079-0:2017 Explosive atmospheres - Part 0: Equipment - General
requirements• 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

Temperature tables

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,  6. If the installation conditions cannot be met, themaximum process temperature Tp must not exceed the maximum ambient temperature Ta.

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5XA03140C

Connections

Memosens Wave CKI50

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 anUKEx 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 thepermitted 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.

Installation conditions

AB

Tp

TaA0050071

1ABTaTp

6

Installation conditions
Zone 0Zone 1
Ambient temperature
Process temperature

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