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<strong>LAC</strong> <strong>74.1</strong><br />
Load Cell Amplifier with Analogue Output<br />
Analogue Load Cell Amplifier<br />
with Analogue Output<br />
- Linearity better than 0.010 % of full scale<br />
- Analogue outputs of 0/4...20mA or 0 - 10V DC<br />
- Independently EMC tested and fully CE approved<br />
- Capable of driving up to four 350 Ohm Load Cells<br />
- Active low pass filter from 0.33 Hz to 33 Hz<br />
- Supply voltage 12 - 24 VDC +10/-15%<br />
- Zero offset up to ± 90% of full scale<br />
- Input signal range up to 3.5 mV/V<br />
- Zero and Span coarse and fine adjustment<br />
- PCB with plated steel case mounted on DIN rail clips
Technical Data<br />
Model <strong>LAC</strong><strong>74.1</strong><br />
Off<br />
On<br />
IN mV<br />
% at<br />
2mV/V<br />
SET ZERO<br />
0<br />
0,5<br />
1,0<br />
2,0<br />
4,0<br />
8,0<br />
16,0<br />
0<br />
2,5<br />
5<br />
10<br />
20<br />
40<br />
80<br />
Pol. +/-<br />
Fine adj.<br />
Load cell Analog Converter<br />
<strong>LAC</strong> <strong>74.1</strong><br />
Relative<br />
gain<br />
*<br />
Resolu.<br />
* 1000 n<br />
SET SPAN Pot ccw = calib.<br />
0,25<br />
0,5<br />
1,0<br />
2,0<br />
4,0<br />
8,0<br />
16,0<br />
60 1,0<br />
50<br />
40<br />
30<br />
20<br />
13<br />
Fine adj.<br />
7<br />
4<br />
f CUT<br />
τms<br />
SET<br />
5 33<br />
16 10<br />
50 3,3<br />
160 1<br />
500 0,33<br />
FILTER<br />
20mA/10V<br />
0-20/4-20<br />
Under<br />
In range.<br />
Over<br />
OUTPUT<br />
<strong>LOAD</strong> <strong>CELLS</strong> 10Vdc 100mA Out<br />
Log Err. Power<br />
Exc Sen Inp Inp Sen Exc<br />
+ + + _ _ _<br />
20mA/<br />
10V<br />
I/V Gnd<br />
Made in EU by H&B<br />
www.haubac.<strong>com</strong><br />
Part no. <strong>74.1</strong>01.5.v.2.0x<br />
-10°C/+40°C<br />
C Gnd<br />
<strong>74.1</strong>1.2.V.2.00<br />
Hauch & Bach ApS<br />
+ +<br />
12-24Vdc<br />
Error<br />
Pwr. OK<br />
CND<br />
TECHNIQUES LIMITED<br />
www.sensortechniques.<strong>com</strong><br />
0 0<br />
PLC and/or<br />
a Computer with<br />
Analogue Input<br />
Normally Closed Open<br />
Collector Logic Output<br />
- Opens on Error<br />
Straingauge<br />
transducer(s)<br />
6 wire sense<br />
system<br />
PLC<br />
Controller<br />
ON<br />
1 2<br />
Power Supply<br />
Voltage<br />
12...24 VDC<br />
14...18 VAC<br />
Specifications<br />
Specifications are subject to change without prior notice<br />
Linearity<br />
Excitation Voltage<br />
Input Signal Range<br />
Signal Filter<br />
Indicators<br />
Logic Output<br />
Tare offset<br />
Current Output or<br />
Voltage Output<br />
Temperature Effect Zero<br />
Temperature Effect Span<br />
Temperature Range<br />
Construction<br />
Dimensions<br />
Weight<br />
Power Supply<br />
: < 0.010 % F.S.<br />
: 10V DC with sense circuit, driving up to 4 transducers with 350 Ohm bridges<br />
: 0.1...3.5mV/V in 32 steps<br />
: 0.33 ...33 Hz active low pass filter in 5 steps<br />
: LEDs to show Signal Under-/Over-/In-range, Internal Power ON and Error<br />
: Normally closed open collector output which opens when an error occurs (short circuit<br />
on load cell supply, signal or sense wires/output out of range/power failure/4-20mA<br />
loop open circuit)<br />
: ± 90% of full scale while still allowing the remaining 10% to be scaled 4-20mA or 0-10V<br />
: 4 - 20mA or 0 - 20mA<br />
: 0 to 10V<br />
: < ±25ppm/°C<br />
: < ±50ppm/°C<br />
: -10°C to +40°C<br />
: Single PCB enclosed in a plated steel case, mounted on dual TS35 clips<br />
: 135 x 66 x 28 mm ( W x D x H )<br />
: Approx. 0.2 kg<br />
: 12 ...24 VDC +10/-15% or 14-18VAC, 3W max.<br />
DS<strong>LAC</strong><strong>74.1</strong>-2,03/07<br />
Tel. +44 (0)1446 771185 Fax +44 (0)1446 771186<br />
Precision Load Cells<br />
Accessories and Mountings<br />
Measuring Instruments and Systems
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