ISO-LDH/LDL
Isolated Strain Gauge Type Loadcell Input Board (ISO-LDH is High Gain and ISO-LDL is Low 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:
- 12-bit programmable offset voltage. Therefore the user can cancel the DC bias and amplify the AC signal
- The isolated structure eliminate the ground loop noise and protect your computer.
- On board FIFO buffer support gap-free A/D conversion under DOS and Windows environment.
- 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
- 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-bit LED indicator.
- Command set programming
- Software
- Toolkit for DOS
- Toolkit for Windows 95/98
- Toolkit for Windows NT
- Toolkit for Windows 2000/XP
- Toolkit for OCX 95/98
- Toolkit for OCX NT
- Toolkit for OCX 2000/XP
- Toolkit for LINUX
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 ~ 37.5 mV
- Resolution: 12-bit
- Gain input range:
- 400 0 ~ 37.5 4,0000 ~ 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 37.5 mV
- Loadcell offset voltage adjustment: 0 ~ -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 onpen-collector (100mA)
- Output: 8TTL/LED
- General Environment
- Operation Temperature: 0°C to 50°C
- Storage Temperature: -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