Related Manuals for Kobold ZOK-E1
Summary of Contents for Kobold ZOK-E1
- Page 1 Supplementary Operating Instructions Flow rate Controller/ Dosing Unit/Flow Counter Model: ZOK-E1/E2/E3/E4/E5...
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Page 2: Table Of Contents
Replacement ATEX Battery ................ 14 EU Declaration of Conformance ..............17 Exi Certificate ....................18 Manufactured and sold by: Kobold Messring GmbH Nordring 22-24 D-65719 Hofheim Tel.: +49(0)6192-2990 Fax: +49(0)6192-23398 E-Mail: info.de@kobold.com Internet: www.kobold.com page 2 ZOK-Ex K01/0217... -
Page 3: General
ATEX I.S. certified ZOK-Ex series instrument and intend installing it in a hazardous environment for which it is approved. The I.S. certified instrument may be stand alone (ZOK-Ex) or fitted to a KOBOLD flowmeter with pulse sensor (*Ex*). -
Page 4: Overview
It can be loop powered, battery powered and/or dc powered via an approved associated apparatus such as an I.S. isolator. In addition, when externally powered the certified ZOK-Ex series (not ZOK-E1) provides one or two outputs (depending on model and configuration). -
Page 5: Electrical Installation
ZOK-Ex 6. Electrical Installation Power supply options: Most units can be driven through 3 different power options. The software of the ZOK-Ex units detects the power mode and enables / disables corresponding hard- and software functions. a. Battery powered (using intrinsically safe ATEX Battery-see Section 12): No electrical outputs, only unpowered sensors can be used (reed switch and induction coil sensor). - Page 6 ZOK-Ex b. Self exciting inputs: Non-amplified Pick off coils from turbine meters are examples of this type of input. Pick-off coils must be I.S. certified and the entity parameters of the coil must not be less than the entity parameters of the ZOK-Ex instrument being: Vi = 28 VDC, Ii = 100 mA, Pi = 0.7 W c.
- Page 7 ZOK-Ex d. Other inputs: The ZOK-Ex units can also accept isolated pulse/frequency outputs from a powered device such as an open collector or voltage free contact from a mass or electromagnetic flowmeter. These devices must be appropriately certified and the pulse/frequency output must be galvanic isolated and have certified entity parameters not less than the entity parameters of the ZOK-Ex instrument being: Vi = 28 VDC, Ii = 100 mA, Pi = 0.7 W...
- Page 8 ZOK-Ex page 8 ZOK-Ex K01/0217...
- Page 9 ZOK-Ex Outputs (only ZOK-E2/E3/E4/E5): The ZOK-Ex instruments (except ZOK-E1) are certified to provide one (two) of the outputs i.e. Analogue, switching or pulse. To obtain an output, external power is required to be sourced from a certified associated apparatus located in the safe area.
- Page 10 ZOK-Ex 2. Three wire 4-20mA output (ZOK-E3/E4): The ZOK-Ex instrument can be powered in a three wire 4-20 mA configuration, if the input sensor requires power from the ZOK-Ex instrument. 3. Dosing function/Pulse or flow alarm ouputs (ZOK-E2/E5): For ZOK-E2/E5 units the electronic assembly is equipped with an additional opto-coupler board.
- Page 11 ZOK-Ex For ZOK-E5 with pulse output For ZOK-E2 with dosing function or for ZOK-E5 with high and low flow alarm outputs ZOK-Ex K01/0217 page 11...
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Page 12: Wiring
The only replaceable item within the instrument is the ATEX Battery and can be replaced as a complete unit. Only the certified I.S. battery assembly ERS- BATEX036 can be used and can be ordered through Kobold offices. page 12 ZOK-Ex K01/0217... -
Page 13: Repair
ZOK-Ex 10. Repair The ZOK-Ex series instruments must only be repaired by trained personnel using approved spares. Instruments requiring repair must therefore be returned to the manufacturer. 11. Label and ordering code code type function outputs Identifying label meter Counter none mount versio... -
Page 14: Replacement Atex Battery
12. Replacement ATEX Battery Replacement Battery Pack I.S. battery assembly KOBOLD Article No. ERS-BATEX036 Warning: KOBOLD Intrinsically safe battery assembly P/No. ERS-BATEX036 only approved for ZOK-Ex instruments mounted in a hazardous area. Label on ATEX Battery Note: It is highly recommended to follow the instructions mentioned on the ATEX Battery label. - Page 15 ZOK-Ex Mounting the ATEX Battery In case if the ATEX Battery is ordered separately, following steps need to be taken to connect it: 1. The ATEX Battery should be plugged into the connector “ext Batt” on ZOK-Ex electronics and placed between the battery terminals as shown below: 2.
- Page 16 ZOK-Ex 2. Once this is ensured, the spacing between the rings should be pushed into the narrow side of the ring eye. Hence locking the tie. How to untie: The above mentioned steps will be carried out in the reverse order to untie the cable tie i.e.
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Page 17: Eu Declaration Of Conformance
ZOK-Ex 13. EU Declaration of Conformance We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole responsibility that the product: Flow Rate Totaliser/Controller Model: ZOK-E1/E2/E3/E4/E5* To which this declaration relates is in conformity with the standards noted below: EN 60079-0:2014... -
Page 18: Exi Certificate
ZOK-Ex 14. Exi Certificate page 18 ZOK-Ex K01/0217... - Page 19 ZOK-Ex ZOK-Ex K01/0217 page 19...
- Page 20 ZOK-Ex page 20 ZOK-Ex K01/0217...
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