WEIGHING TECHNOLOGY |
Keywords: Loadcell, strain gauge, amplifier, digital filter, microcontroller, excitation, retail scale, bench scale, conveyor scale, batching & filling systems, dosing, silo weighing, EN45501, OIML, calibration, counting scale
Weighing Companies (Manufacturers) in Turkey:
Products/Market Positions (Last Update 21 December 2001)
Retail Scale | Bench Scale | Truck Scale | Counting Scale | Filling Automation | Material Analysis | Mono Rail Scale | Home Page | |
Hisar Terazi | ![]() |
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www.hisarterazi.com |
TESS | ![]() |
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---- | www.tessedis.com |
Baster | ![]() |
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---- | www.baster.com.tr |
Tunaylar | ---- | ![]() |
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---- | ---- | www.tunaylar.com |
Esit | ---- | ![]() |
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www.esit.com.tr |
Baykon | ---- | ![]() |
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www.baykon.com.tr |
Ýhlas Tarsan | ![]() |
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---- | ---- | ---- | ---- | ---- | www.ihlastarsan.com.tr |
Net Tartý | ---- | ---- |
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TEM | ![]() |
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Etasis | ![]() |
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---- | ---- | www.etasis.com.tr |
Mostly used ADCs in History of Electronic Weighing (December 2001) :
1- 7135 (20000 internal counts of resolution, dual slope BCD output, not suggested for new designs)
2- TC500 (16bit + sign equivalent counts, 3 pin connection to microcontroller, dual slope, not suggested for new designs)
3- CS5520 (20 bit sigma-delta converter, serial output, not suggested for new designs)
4-AD7730 (24 bit sigma-delta convertor, serial output)
1- CIRRUS LOGIC most popular Delta-Sigma ADCs
a) CS 5510/11/12/13 :
Delta-sigma (DS) analog-to-digital converter
Linearity error: 0.0015% FS
Noise-free resolution: up to 17-Bits
Differential bipolar analog inputs
V REF input range from 250 mV to 5 V
50/60 Hz simultaneous rejection (CS5510/12)
16 to 326 Hz output word rate
On-chip oscillator (CS5511/13)
Power supply configurations:
V+ = 5 V, V- = 0 V
Multiple dual supply arrangements
Low power consumption
Normal mode, 2.5 mW
Sleep mode, 10 mW
Low-cost, compact, 8-pin package
b) CS 5516/5520
On-chip instrumentation amplifier
On-chip programmable gain amplifier
On-chip 4-bit D/A for offset removal
Dynamic excitation options
Linearity error: ±0.0015% FS 20-bit no missing codes
CMRR at 50/60 Hz >200 dB
System calibration capability with calibration read/write option
3-, 4-, or 5-wire serial communications port
Low power consumption: 40 mW (10 mW standby mode for portable applications)
c) CS 5531/32/34
Chopper-stabilized PGIA (programmable gain instrumentation amplifier, 1x to 64x)
6 nV/ÖHz @ 0.1 Hz (No 1/f noise)
<500 pA input current with gains >1
Delta sigma (DS) analog-to-digital converter
Linearity error: 0.0007% FS
Noise-free resolution: Up to 23 bits
Two or four channel differential MUX
Scalable input span via calibration
5 mV to 5 V
Scalable V REF input: up to analog supply
On-chip guard drive output buffer
Simple three-wire serial interface
SPI ® and Microwire™ Compatible
Schmitt Trigger on Serial Clock (SCLK)
2- ANALOG DEVICES Delta-Sigma ADC selection guide
Table 1: Additional information on 50mW and 25mW
Power Consumption ADCs
Table 2: Additional information on 5mW and 1mW
Power Consumption ADCs
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