Miniature Analogue Strain Gauge Amplifier with 4-20 mA 3 wire OutputICA4H
SKU: ICA4H
Description
ICA4H – Miniature Strain Gauge Amplifier (4–20 mA Output)
The ICA4H is a high-performance miniature strain gauge amplifier delivering a 4–20 mA current output via a 3-wire connection. Designed for OEM integration directly into load cells, pressure sensors, and force transducers, it provides robust and noise-immune analogue signalling suitable for long cable runs and industrial environments.
Part of the ICAH high-stability range, the ICA4H features excellent temperature stability and low drift, making it ideal for precision applications where reliable current-loop output is required. Its compact form makes it easy to embed within sensor bodies without compromising performance.
The ICA range includes:
-
ICA1H, ICA2H, ICA3H, ICA4H, ICA6H – High-performance OEM variants
-
ICA5S – Industrial-grade version for rugged environments
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The ICA5 is also available in an intrinsically safe ATEX-certified version (ICA5ATEX) for hazardous area applications.
An optional ILE (In-Line Enclosure) is available to externally condition standard load cells, eliminating the need for internal modifications.
Product Features & Benefits
- Fits inside sensors, 19.5 mm diameter, 7.6 mm height
- 4-20 mA 3 wire output
- Non interaction between the trimmers makes calibration fast and easy
- High speed 1000 Hz
- User selectable span resistor
- Robust design, of high noise immunity & reverse polarity protected
- Option of an in-line enclosure
Specifications
Parameter |
Min |
Typ |
Max |
Units |
Notes |
Electrical & Environmental
|
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| Supply Voltage Range | 13 | 24 | 28 | Volts | The ICA4 can tolerate a lower supply voltage if the output load is reduced e.g. operation is possible at 8V provided that the load does not exceed 150 Ohm. |
| Operating Current | 26 | – | 42 | mA | With 350 Ohm load cell connected. |
| Operating temperature range | -40 | – | 85 | ºC | |
| Storage temperature range | -40 | – | 85 | ºC | |
| Reverse polarity protection
|
-30 | – | – | Volts | |
Measurement
|
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| Bridge excitation | 4.9 | 5 | 5.1 | Volts | |
| Bridge impedance | 350 | 1000 | 5000 | Ohms | |
| Bridge sensitivity | 0.5 | 2.5 | 150 | mV/V | The factory setting is the typical value, with other values possible via an alternate calibration resistor. |
| Output current range | 4 | – | 20 | mA | |
| Output load | – | – | 1000 | Ohms | 24V minimum supply / sink mode. |
| Bandwidth | DC | – | 1000 | Hz | |
| Zero adjustment | – | ±2 | – | %FR | |
| Span adjustment | – | ±8 | – | %FR | |
| Linearity | – | 0.02 | – | %FR | |
| Zero temp stability | – | 0.0004 | 0.0015 | ±%FR/ºC | |
| Span temp stability | – | 0.002 | 0.0051 | ±%FR/ºC |
Environmental
|
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| Storage Temperature | -40 to +85ºC | ||||
| Operating Temperature | -40 to +85ºC | ||||
| Relative Humidity | 95% maximum non condensing | ||||
| CE Environmental Approvals | European EMC Directive 2004/108/EC | ||||
Dimensions
19.5mm x 7.6mm
Downloads
FAQ
| Q | How many load cells can you attach to a ICA? |
| A | One |
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