Caractéristiques détaillées:

Isolated Strain Gauge type Loadcell Input Board ( High Gain)

FEATURES

The ISO-LD series is a bus-type isolated loadcell input board. The isolation inputs can operate with up to 500Vrms of common-mode voltage.
The ISO-LD series features a 12-bit analog-to-digital converter, on board 1 K bytes FIFO buffer , one loadcell signal input channel, one analog input channel, 8-channel 12-24V isolated digital inputs, 7-channel isolated open-collector digital outputs, one programmable 8-bit LED indicator to indicate the magnitude of strain gauge input signal.
The ISO-LD series board is suitable for static force measurement and dynamic force analysis. Because there are on board excitation voltage, high gain amplifier, you don*t have to buy any excitation voltage and signal conditioning module. In other words, it save your money and space. The board also have some special features, such as:

1. 12-bit programmable offset voltage. Therefore the user can cancel the DC bias and amplify the AC signal
2. The isolated structure eliminate the ground loop noise and protect your computer.
3. On board FIFO buffer support gap-free A/D conversion under DOS and Windows environment.
4. Except the loadcell input channel, there are a lot digital I/O and one analog input channel .The user can implement a measurement and analysis system.

AT bus

500 VDC photo-isolation protection

One channel strain gauge input channel

One channel analog input channel

Built-in 1K bytes FIFO

Excitation voltage for loadcell : 12V, 50mA

Maximum gain up to 40,000

Programmable 12 bit resolution ,DC offset voltage (0~5V)

Second order low pass filter build-in

Direct connection to strain gauge type loadcell

8-channel 12-24V isolated digital input

7-channel isolated open-collector digital output

Programmable 8 bits LED indicator.

Command set programming

SPECIFICATIONS:

Analog Input Specifications

Channels: 1 loadcell input channel & 1 analog input channel

Resolution: 12-bit

Sampling Rate: 20KS/s max

Nonlinearity: ±0.01%

Gain error: 0.005% of reading maximum

Input Impedance: 10,000MW||6pF

Bias current: ±2 nA (maximum)

Input offset current: ±2 nA (maximum)

CMRR: 90 dB (Minimum)

Recommended warm-up time: 10 minutes

Sample & hold: On chip

ISO-LDH Input Range

Analog input range 0~10V , 0 ~1V , 0~0.1V , 0~0.01V

Strain Gauge input range 0 ~ 37.5mV

Resolution 12-bits

Gain Input range 400 0~37.5 4,000 0~15 40,000 0~12.75

ISO-LDL Input Range

Normal input range 0~10V, 0~5V, 0~2.5V, 0~1.25V

Loadcell input range 0 to 37.5mV

Loadcell offset voltage adjustment 0 to -5V, 8 bit

Gain input range(mV): 400 0 ~ 37.5 / 8,00 0 ~ 25 / 1,600 0 ~ 18.75 / 3,200 0 ~ 15.625

Loadcell offset voltage adjustment: 0 to 5V, 12 bit resolution

Digital I/O

digital input 8 photo-isolated 12~24V

digital output 7 isolated open-collector (100mA)

Output 8 TTL/LED

Environmental

Operating Temperature: -25ºC - 75ºC

Storage Temp: -20°C to 70°C

Humidity: 0-90%, non-condensing

Dimensions: 190cm x 122cm

Power Requirements: +5V @ 400mA max.

Applications

Strain gauge type loadcell measurement

Dynamic force on line monitoring system

Dynamic pressure measurement