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Single Channel Strain Gauge Amplifier

SG-KP-12E/24E-xxx

Germany | Switzerland | Austria

Althen GmbH Mess- & Sensortechnik
Tel: + 49 (0)6195 - 70060
[email protected]

Benelux

Althen bv Sensors & Controls
Tel: +31 (0)70 392 4421
[email protected]

France

Althen / DB Innovation
Tél : 0033 (0)4 67 78 61 66
[email protected]

Sweden

Althen Sensors & Control AB
Tel. +46 (0)8 7 95 24 90
[email protected]

USA | Canada

Altheris Inc Sensors & Controls Inc.
Tel: +1 858-633-3572
[email protected]

Other Countries

please contact us
by email at
[email protected]
www.althen.de

V2.1 eng

Содержание SG-KP Series

Страница 1: ...ontrols Tel 31 0 70 392 4421 sales altheris nl France Althen DB Innovation Tél 0033 0 4 67 78 61 66 info althensensors fr Sweden Althen Sensors Control AB Tel 46 0 8 7 95 24 90 info althensensors de USA Canada Altheris Inc Sensors Controls Inc Tel 1 858 633 3572 info althensensors com Other Countries please contact us by email at sales althensensors com www althen de V2 1 eng ...

Страница 2: ...gy 8 4 2 2 Connecting in 4 wire technology 8 4 2 3 Lenghening a cable in 4 wire technology 9 4 2 4 Connecting in 6 wire technology 10 4 3 Analogue output 10 4 3 1 Analogue output voltage 11 4 3 2 Analogue output current 11 4 3 3 Low pass filter 11 5 Startign up 12 5 1 Zero point adjustment range 12 5 2 Adjustment calibration of the amplifier 13 5 2 1 Correction of the analogue current output 14 5 ...

Страница 3: ... complete measuring unit must be protected against contact and influence of unauthorized persons In the case of a safety relevant application where a potential malfunction could cause damage to property or persons it is imperative that an additional independent monitor is provided In combination with sensors the maximum loads pressures etc must never be exceeded If you have reasons to assume that ...

Страница 4: ...tential equalization currents over the shield of the cable to the following evaluation unit this shield should be connected over a suitable capacitor 10nF 200V Overall the shield connections must be done properly to EMC standards as short as possible with large wire cross section and connected to a central point star grounding In order to not increase the interference sensitivity of the amplifier ...

Страница 5: ...des can ensure centric force transmission Tightening torques while mounting any sensors may result in an increased zero balance offset If the sensor has been replaced the calibration of the amplifier must be checked A new adjustment might be necessary 3 Technical description The described single channel measuring amplifier serves to supply a strain gauge sensor with a full bridge resistance of 300...

Страница 6: ...le the cable screen may be connected to clamp 15 of the amplifier analogue ground screen Anyhow enough interference immunity is to be ensured Clamp Description Clamp Description 1 Supply voltage 9 SG Signal Transducer 2 Supply Ground 10 SG Signal Transducer 3 Supply Ground 11 SG Sense Transducer 4 Analogue Ground 12 SG Excitation Transducer 5 Analogue Ground 13 SG Sense Transducer 6 Analogue outpu...

Страница 7: ...itch on current is greater than the operating current This must be taken into consideration when dimensioning and selecting the power pack especially if several amplifiers are being wired to the same power source 4 1 1 Galvanic isolation The supply voltage of the amplifier is galvanically isolated from analogue output sensor supply and sensor signal To unset this isolation clamp 3 and 4 have to be...

Страница 8: ...use the 2 additional wires measure the excitation voltage directly at the sensor and the amplifier adjusts the excitation voltage accordingly 4 2 2 Connecting in 4 wire technology Notice When connecting in 4 wire technology the jumpers J1 and J2 must be set Otherwise the transducer might get damaged resp destroyed The values in the calibration certificate of the sensor have been recorded with the ...

Страница 9: ...s Thus the excitation voltage drops by 0 03 V resp 30 mV which results a measurement inaccuracy of 0 3 Pic 3 Sensor with 4 wire cable Lengthened with 6 wire cable In the picture above the cable has been lengthened with a 6 wire cable so the voltage drop of 30 mV is corrected by the amplifier by measuring the actual voltage at the end of the original cable SG Amplifier SG Signal SG Excitation volta...

Страница 10: ...ding on the ordered option are available Version 010 The output is 0 10 Volts max 1 mA Version B10 The output is 10 Volts max 1 mA Version 420 The output is 4 20 mA max 500 ohms Other analogue outputs available on request For parameter settings further information concerning scaling or customized analogue outputs please refer to the additional sheet Allocation Device Configuration SG Amplifier SG ...

Страница 11: ... slightly higher than that just in order to check if said signal does not virtually hang below 4 mA If the output reacts immediately it can be set back to 4 mA otherwise the signal of the transducer has to be checked If the current of 4 mA does not increase while loading a force to the transducer the polarity of the signal has to be checked If this is of negative polarity the signal wires need to ...

Страница 12: ...ier is to be complied with After replacing a transducer the calibration has to be checked It is to be noted that there is a slight dependence between zero point adjustment and amplification gain 5 1 Zero point adjustment range It is to be noted that there is a slight dependence between zero point adjustment and amplification gain The zero point adjustment range is approx 10 This range can be chang...

Страница 13: ...up might need an inspection Adjustment Calibration The coarse amplification and thus the voltage output is determined by an internal resistor RG and can be fine adjusted by a potentiometer P 02 To adjust the current output which follows the voltage output the potentiometer P 03 is to be used See next chapter Before the calibration a warm up time of approx 30 mins should be kept The measuring devic...

Страница 14: ...d After adjusting the range the zero shall be set back to 4 0 mA 5 2 2 Calculation of amplification determing resistor The amplification is Gtotal Gdifferential amplifier x Goutput stage The amplification of the output stage is adjustable with the potentiometer P 02 GAIN The adjustable range is Goutput stage 9 5 10 5 Volts Calculation of the coarse amplification resistor RG applies for 10 Volts ou...

Страница 15: ...posed of separately Amplifiers and measurement units manufactured and sold by Althen Mess Sensortechnik GmbH serve B2B purposes only Therefore those old appliances must not be given to the communal disposer but must be given back to the seller or disposed of properly If you need any further information please contact your local authorities These measures serve to protect the environment and allow ...

Страница 16: ...optional up to 30 kHz Input resistance 3 MΩ Max input sensitivity 100 mV V at 5 VDC excitation supply Non linearity 0 05 FSO Electrical connection Pluggable Screw clamps Housing Plastic enclosure for top hat rail mounting IP20 Dimension W x H x D 23 x 99 x 115 mm Weight approx 150 g Temperature storage 20 C 60 C Temperature operating 0 C 50 C Order designation SG KP Single channel strain gauge amp...

Страница 17: ...17 18 Component diagram DIP 50 Zero Point Range DIP 60 1 2 Increase Signal 3 4 Low pass filter 4 1 4 LP81 1 SG Exc voltage LP81 2 SG Exc voltage Rg R3 Visible after removing the EMC plate ...

Страница 18: ...18 18 Housing dimensions Subject to modifications All information describes our products in general form ...

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