Description
Strain gauge bridge amplifier ESMC with a built-in safety circuit for SIL1 and PL c — in an IP65 field housing for mounting outside the control cabinet.
The difference to the SIL3 range: the safety function sits inside the device. A second amplifier, two comparators and a semiconductor relay watch the bridge independently of the measuring channel. No safety controller is required — the device switches by itself.
That makes the ESMC a usable measuring amplifier at the same time: 0.1 % of range plus sensor error, 24 bit resolution, output either 4 … 20 mA or 0 … 10 V.
Features of the ESMC
✓ Sensor input: 1 × strain gauge full bridge 350 Ω
✓ Bridge sensitivity: up to 4 mV/V
✓ Bridge supply: 1.25 … 3 VDC
✓ Analog output: 4 … 20 mA or 0 … 10 V
✓ Accuracy: 0.1 % of range plus sensor error
✓ Resolution: 24 bit
✓ Switching output: 30 VAC/VDC, 500 mA max.
✓ Response time: 50 ms
✓ Safety rating: SIL1 · PL c — built in, no safety controller required
✓ Housing: field housing
✓ Protection: IP65