KROHNE ACM 500 EN User Manual

Installation and
Operating Instructions
ACM 500
Date: 1.02.2013
02/2013 ACM 500 1
Contents
Items supplied .................................................................................................................................... 3
System description ............................................................................................................................ 3
Product liability and warranty ............................................................................................................. 3
CE / EMC / Standards / Approvals ..................................................................................................... 3
1 Installation ............................................................................................................................... 4
1.1Mechanical installation .............................................................................................................. 4
1.2Process connection ................................................................................................................... 4
1.3Mounting of 3A marked products ............................................................................................... 5
2 Electrical connection .............................................................................................................. 6
2.1Connection plan: ....................................................................................................................... 7
2.2Start-up ..................................................................................................................................... 7
2.3Operator control ........................................................................................................................ 7
3 Setting the parameters ........................................................................................................... 8
3.1Menu structure .......................................................................................................................... 8
3.2Measured data/version indication 0 ........................................................................................... 9
3.3Range setting, conductivity 1, 3, 5, 7 ......................................................................................... 9
3.4Setting of temperature compensation 2, 4, 6, 8 ....................................................................... 10
3.5Measuring range setting, temperature 9 .................................................................................. 11
4 Maintenance / Error handling ............................................................................................... 12
4.1Error displays .......................................................................................................................... 12
4.1.1Overranging of the conductivity measuring range ................................................................... 12
4.1.2Overranging of ADC conductivity ............................................................................................ 12
4.1.3Error in conductivity measurement .......................................................................................... 12
4.1.4Overranging of the ADC for temperature ................................................................................. 13
5 Safety information ................................................................................................................. 13
6 Technical data extract ........................................................................................................... 14
6.1Dimensions ............................................................................................................................. 14
7 Type code .............................................................................................................................. 15
7.1Ordering code ......................................................................................................................... 15
7.2Spare parts .............................................................................................................................. 15
7.3Accessories ............................................................................................................................. 15
8 Product description .............................................................................................................. 16
8.1Range of application ................................................................................................................ 16
8.2Functional principle ................................................................................................................. 16
8.3Configuration ........................................................................................................................... 16
8.4Features .................................................................................................................................. 17
9 Notes ...................................................................................................................................... 18
If you need to return a device for testing or repair to KROHNE ....................................................... 19
ACM 500 02/2013
Items supplied
Measuring instrument
Hygienic adapter
Installation and operating instructions
System description
Inputting physical quantities into an SPC or PLC control or other computer and control systems requires accurate and reliably working sensors. The sensor is a detecting element that converts physical quantities, such as temperature, level, pressure, conductivity, turbidity and flow, into an electrical signal. Locally further processed, usually with an integrated microcontroller, the measuring signal can be transmitted by analogue (e.g. 4..20 mA loop) or digital (e.g. Profibus PA) means.
Product liability and warranty
Responsibility as to suitability and intended use of this instrument rests solely with the operator. Improper installation and operation of the instrument / system may lead to loss of warranty. In addition, all claims are subject to the “General terms and conditions of sale” under which this instrument was purchased. If a meter or instrument needs to be returned to KROHNE, please note the information given on the last-but-one page of these Instructions. KROHNE regrets that it cannot repair or check your instruments unless accompanied by a fully completed Service and Repair sheet.
CE / EMC / Standards / Approvals
The product bears the CE marking on account of compliance with and application of the following standards:
EMCG (89/336/EEC)
EN 50081-1 EN 55022 Class B EN 61000-6-2 EN 61000-4-2 ESD 4/8 kV EN 61000-4-3 RF radiated 10 V/m EN 61000-4-4 Burst 4 kV EN 61000-4-5 Surge 1 kV sym., 2 kV unsym. EN 61000-4-6 RF cable 10 V
02/2013 ACM 500 3
1 Installation
1.1 Mechanical installation
Use only the recommended sleeves or adapters. When installed with foreign adapters, no guarantee can be given for proper functioning or leak-tightness. Do not use Teflon or paper gaskets. When installing in pipes, it is advisable to align the bore at the sensor in the direction of flow. This will ensure good exchange of the medium and good cleanability. The display unit is then positioned at right angles to the pipe. It is not possible to turn the display relative to the channel bore! Carefully introduce the measuring head straight into the sleeve. Hold the correctly aligned measuring head firmly and screw down the union nut with a tightening torque between 20 and 50 Nm. Correction inputs as a factor of the diameter are not necessary when installing in pipes.
1.2 Process connection
The hygienic ½” process sleeve is easy to weld in into tanks or pipes. The kind of assembly allows installation in conformity with standards of hygiene (to EHEDG, FDA). The G1/2” and G1” connections can be mounted in any counter thread acc. to ISO 228.
Various hygienic adapter sleeves (refer to chapter “Accessories”) are available for fitting to other process connections. For more information refer to data sheet “Accessories”.
ACM 500 02/2013
1.3 Mounting of 3A marked products
The 3A mark is valid only when the product is mounted in a 3A marked counterpart and installed acc. to the installation manual. Use also a 3A marked O-ring or gasket if relevant.
The 3A marked products conforms to the 3A sanitary standards criteria. Materials and surfaces fulfil the FDA demands and are certified by EHEDG.
EPDM O-rings supplied with 3A marked products are conform to sanitary standards class II (8% milk fat).
1) Use only 3A approved counterparts
2) The inspection hole should be visible and drained. Face it downwards that leaking can be observed.
3) Mount the device in a self-drained position.
4) Level the inner surface of the pipe with the counterpart.
5) Weld from the inside of the tank, if possible. Welds shall be free from cracks, crevices and grooves. Weldings should be grinded to Ra= 0.8
Mounting of 3A products in pipe installations (A) or tank installations (B)
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2 Electrical connection
Terminals 1(+) and 2(-) are used for supplying a DC voltage of 18...36V. Terminal 2 is connected to the housing via a protective diode. The maximum power consumption is 180 mA. This value should be taken into account for the recommended fuse. An active 4...20 mA current output, galvanically isolated from the supply voltage, is available at each of terminals 3 and 4, and 5 and
6. Terminal pair 3/4 supplies the conductivity signal, terminal pair 5/6 the temperature value. The negative terminals of current outputs 4 and 6 are connected to each other internally. 24-V control signals (pnp) can be connected to terminals 7 (R2) and 8 (R1) for external selection of one of the four adjustable measuring ranges. The ground reference is connected to terminal 2; an open terminal signifies 0 V.
Meas. Range R2 R1
1 0 V 0 V 2 0 V 24 V 3 24 V 0 V 4 24 V 24 V Please note currently valid installation regulations.
ACM 500 02/2013
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