Armaturenwerk Hötensleben GmbH

Data Sheet CIP-Guard (TCG-ZR)

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Rotation Monitoring Sensor AWH-TCG-ZR Data Sheet

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SW22

55,2

mm

11,0

mm

Ø 55,0 mmap

pox.

51,

5 m

m8,

0 m

m

Ø 18,0 mm

Ø 14,0 mm

G 1/2''

Execution AWH-TCG-ZR-M12

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Rotation Monitoring Sensor AWH-TCG-ZRData Sheet

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5

32

41

!Caution!The operator must proof the functioning in any combination of cleaning liquid, cleaning device and tank environment (non-exhaustive list) and approve it in the respective application.The operator is responsible for the application. Suitable weldon nipple on request.

!Caution!• In case of falling below dew point, condensation may occur and destroy the sensor or the plug connector.• When the device is strained by temperature changes, e.g. a cold water jet on a hot sensor, liquids may be absorbed into the plug (non-exhaustive list). (Requirements, please cp. DIN EN 60068-2-14)

The classifi cation of the density according to IP68 does not imply that these parts are appropriate for applications that fall below dew point or thermal shock applications (DIN 60068-2-14).

Electrical data

Supply voltage: Ub = 24 V +/-20% (18 to 32 VDC)Power requirements: < 20 mAOutput signal: PNP; 50 mA; short circuit-proof; activeStart-up delay: < 0,3 sResponse time: appr. 30 sec

Operating conditions

Ambient temperature: -10 to +60°CStorage temperature: -20 to +70°CProtection class : IP 68Operating pressure: max. 10 barOperating temperature: 0 to +100°C

Technical Data

Pin assignment

1 +VDC 2 Tx (to be contacted with programming adapter only) 3 GND 4 OUT/PNP 5 Rx (to be contacted with programming adapter only)

Materials

G1/2'' nozzle: 1.4404Probe tip: PEEKCase: 1.4301/1.4305O-ring: EPDMWeight: approx. 465 g

Remarks

Application Area

Characteristics

Sensor for monitoring a controlled rotating tank cleaning nozzle.

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Rotation Monitoring Sensor AWH-TCG-ZR Data Sheet

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A B C D

Parameterization and Notes

A Phase 1 - Start of cleaning processB Phase 2 - Cleaning identifiedC Phase 3 - Error, cleaning nozzel positioned directly on the sensorD Phase 4 - End of cleaning process: measured value and dynamics drop out

Picture 1

The cleaning starts in phase 1 at approx. 50 seconds. After another 20 seconds starts phase 2, in which the sensor recognizes a proper cleaning according to the set parameters (measured value and dynamics are within the switching thresholds). There is an error in the cleaning device in phase 3 (from approx. 200 to 250 seconds). The cleaning device has stopped with the result that the nozzle sprays continuously on the sensor. The sensor identifies this status and switches the output according to the configuration. Until the end of phase 4 (after approx. 310 seconds) a proper cleaning is carried out.

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Rotation Monitoring Sensor AWH-TCG-ZRData Sheet

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1. Measured value (blue)

The measured value is proportional to the jet intensity of a cleaning device. The chart shows the rotating phases of a jet cleaner. The measured value contains a minimum and maximum value (switching thresholds). These switching thresholds of the measured value shall be adjusted that way, that the measured value lies within the switching thresholds at proper cleaning.

2. Dynamics (red)

The dynamics is proportional to the frequency of the jet cycles. This means that a fast rotation of a jet cleaner with powerful spraying on the sensor tip results in a higher dynamic value. In the case of an error that a nozzle is geared constantly towards the sensor, the dynamic value is reduced due to missing cycles between the spraying and non-spraying. Thus, an error during cleaning can be detected.

3. Output (brown)

The brown reference line indicates the state of the PNP output. The sensor identifies a correct cleaning when both signals (measured value and dynamics) are between the respective switching thresholds. If the output logic is set as non-inverting (nO: normally Open) and a properly accomplished cleaning takes place at the same time, the output is switched to “1”. If the output is set as inverted (nC: normally Closed), it is switched to “1” as long as a correct cleaning is not identified. As soon as the cleaning is classified as correct, the output switches to “0”.

4. Setting of the sensor parameters

4.1 First of all, the sensor must be electrically installed and connected. Afterwards it must be connected to the PC software.

4.2 The recording must be started before the reference cleaning cycle.

4.3 The cleaning cycle must be started and run completely. In order to avoid a false alarm, all potential occurrences, e.g. different pressures, should be tested during the reference recording.

4.4 During the reference recording potential switching thresholds can be adjusted. When the output logic is added to the chart (adjustable via the menu), the output behaviour of the sensor can be observed.

4.5 After the end of the reference cleaning cycle the switching thresholds (min. and max. values) shall be adjusted that way, that they have a sufficient distance to the measured value and the dynamics at a proper cleaning. The parameters can only be sent to the sensor during an existing connection. It is recommended to save the reference recording, in order to display differences if any problems or variations during the cleaning process occur.

- The shorter the distance of the measured value or dynamics to the switching threshold, the higher the probability of a false alarm.- The longer the distance of the measured value or pulse duration to the switching threshold, the higher theprobability that an error is not reported (e.g. pressure loss of the lead).

4.6 Please check the setting or parameter for correctness.

5. Analysis of the sensor signal by a PLC

A PLC is able to analyse the digital PNP output signal (24 VDC) with a timer. Depending on the adjusted output logic the PLC analyses a “1” or a “0” at the output of the sensor. For that to happen, the time is added up in which the sensor recorded a correct cleaning by means of a PLC timer. The cleaning cycle can be rated as good, when the added up cleaning time is bigger than the defined value (the cleaning cycle has to be rated differently depending on the application).

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Rotation Monitoring Sensor AWH-TCG-ZR Data Sheet

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Labelling

Scope of Delivery

1x Sensor1x Carton packing

CIP-Guard TCG-ZR 2012Artikel-Nr.: 68TCG-ZR-M12BA471108

Armaturenwerk Hötensleben GmbHD-39393 Hötensleben, Schulstraße 5-6

We reserve the right to make technical modifications and corrections at any time without prior notice!

Note

6. Installation instructions

6.1 Operation

ParameterisationCover is removed for parameterisation. The PC is connected with the aid of the interface and of the plug-in adapter with the sensor (contact strip). The power supply is connected to the sensor via M12-plug. The parameterisation can begin. After parameterisation the cable is removed and the cover closed.

InstallationDepending on the sensor type, the electrical connection has to be carried out directly through the terminal block on the electronics or through the built-in M12 plug. The 24 VDC supply voltage, which is normally available, will be connected according to the wiring diagram. The active PNP output must be connected exemplary to a processing control system. Note: The output voltage is proportional to the input voltage! Example: At a supply voltage of 20 VDC the output signal has a voltage of <20 VDC. Please note that the output can only switch the positive side of the supply voltage (max. 35 mA). Switching load against ground is not possible!

6.2 Settings

All adjustable parameters can be defined via the PC software. It is possible to adjust the switching thresholds (measured value and dynamics) as well as the output logic. The measured values of the process can be monitored online. Thus, the parameters can be adjusted individually according to the respective process requirements. Unexpected process conditions, such as leaps of the measured value due to different pressures, are displayed clearly in a chart. Thus, misadjustments can be avoided beforehand.

Armaturenwerk Hötensleben GmbHSchulstr. 5 - 6D-39393 Hoetensleben

Tel.: +49 39405 92-0 Fax: +49 39405 92-111 e-mail: info@awh.de http://www.awh.eu

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