Product Specification
| Item | Specifications |
| Model | SAI143 |
| Number of input channels | 16 channels, module isolation |
| Rated input range | 4 to 20 mA |
| Permissible input range | 0 to 25 mA |
| Input impedance during Power-ON | 250 Ω+ Voltage drop in the input protection circuit inside the module/Current value |
| Input impedance during Power-OFF | 500 kΩ minimum |
| Rated accuracy | SAI143-S : ±16 µA (Input range 1 to 23 mA) SAI143-H : ±16 µA (Input range 0.05 to 23 mA) |
| Data update frequency | 40 ms |
| Temperature drift | ±16 µA/10 °C |
Transmitter power suppl | 16.15 V minimum (at 20 mA) 26.4 V maximum (at 0 mA) (Output current limit: 25 mA) |
| 2/4-wire setting | Individual channel setting Changed by setting pins |
| Withstand voltage | 1.5 kV AC between input signal and system for 1 minute |
| Maximum current consumption | 5 V system: 320 mA, 24 V system: 550 mA |
HART Communication Specifications
| Functions | Description |
| Communication mode | Serial half duplex, start-stop synchronization, 1 start/ 8 bit/ odd parity/ 1 stop |
| Applicable standard | HART Protocol Revision 5.7 |
| Transmission speed | 1200 ±2 bps |
| Modulation technique | Binary phase-continuous FSK 1: 1200 Hz ±1 %, 0: 2200 Hz ±1% |
Frame length | 5 to 267 bytes Contents of max. 267 bytes:
|
| Frame detection | 3 byte header byte-count carrier (ON/OFF) Preamble: 5 to 20 bytes |
| Error detection coding | Longitudinal/Vertical parity |
| Response time | Max. 28 characters (256.7 ms) |
| No response timer | 33 characters (305 ms) for primary, 41 characters (380 ms) for secondary |
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EXTERNAL DIMENSIONS
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Nominal tolerance:
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Product Pictures
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