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The explosion protection version of the SCHMIDT + HAENSCH process refractometer consists of an intrinsically safe, single-certified sensor, which can be installed in hazardous areas. It is chemical resistant, food safe, and delivers reliable and hygienic measurements, fully in-line with your production process.
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More InformationThe 7” touch screen is individually configurable. The measured data can be output via Ethernet as a 24 V or 4-20 mA signal, or controllable relay.
For data transmission to other systems, serial RS 232, 485 interfaces, a CAN bus or UPC server are available.
Up to two measuring heads can be connected at the same time.
This fully automatic process sensor is perfectly suited for direct measurement of dissolved solids, process monitoring, and control in hazardous areas. With its explosion protection, it can be employed in the automotive, aviation, petrochemical, and refinery industries.
Conformity: Zone 0 Ex II 1 G Ex ia IIC T4 Ga, ATEX 2014/34/EU, EN 60079-0 (2012) + A11 (2013), EN 60079-11 (2012).
The SCHMIDT + HAENSCH critical-angle refractometer with sapphire prism and high-resolution photodiode array operates consistently, independent of medium color or opacity. Stainless steel measuring head is chemical resistant, food safe, hygienic, for process temperatures up to 120 °C (with connected water cooling) and pressures up to 1 MPa. The measuring signals are routed to the non-explosive area via a special cable (maximum length 500 m) and connected to four Zener barriers. The connection to the central control system is realized with a RTU Modbus or serial RS 485 interface. Alternatively, SCHMIDT + HAENSCH offers a control unit which can also be installed outside the hazardous area.
| Specifications | iPR EX Measuring Head |
|---|---|
| ATEX-Label | ATEX Ex II 1G Ex ia IIC T4 Ga |
| Standards | EN IEC 60079-0: 2018, EN 60079-11: 2012 |
| Measuring scales | 100+ standard scales, freely definable custom scales, internal storage one scale |
| Measuring range | 1.32000 – 1.52000 RI / 0 – 90 Brix |
| Accuracy | ± 0.00014 RI / ± 0.1 Brix* |
| Resolution | 0.00001 RI / 0.01 Brix |
| Reproducibility | 0.00007 RI / 0.05 Brix |
| Process temperature | – 20 to + 130 °C (CIP/SIP up to 150 °C for 30 minutes) |
| Ambient temperature | – 10 to + 55 °C |
| Temperature sensor accuracy | ± 0.1 °C |
| Temperature measurement | NTC sensor for measurement of sample temperature placed inside the prism |
| Process Pressure | 0 – 10 bar |
| Interface standard | RS485 Modbus RTU |
| Interface optional | only with iPR EX Control Unit: 4 – 20 mA, switching output |
| Mechanical interface standard | APV 1.4404 Stainless steel |
| Dimensions | 330 mm x Ø 149 mm |
| Weight | 9,600 g |
| IP class | IP69K |
| Light source, wavelength | LED, 589 nm |
| Power supply | 24 V DC |
| Current consumption | typ. 50 mA |
| Wetted parts | Sapphire, FFKM, 1.4404 Stainless steel |
| Housing material | 1.4404 Stainless steel |
| PC Software | UniConfig |
| Available immersion depths on request |
0 – 90 mm |
| *Standard conditions (t= 20 °C, p= 1013 mbar)
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| Specifications | iPR EX Control Unit |
|---|---|
| Operation | 1 and 2 measuring headsets are available, connectable with built-in Zener barriers |
| Display | 7″ Touchscreen |
| Interface | Ethernet |
| DIN rail parts (expandable) |
Switch inputs (24 V) and outputs (24 V / relay / 4-20 mA) / Communication (RS232/RS485), CAN, UPC Server |
| Highlights | Configuration of measuring head and outputs / Adjust switching thresholds and analog outputs / Concentration and other scales user programmable |
| Power | 85 to 265 V 50/60 Hz |
| Protection class | IP69K |
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