iPR-EX Inline Process Refractometer
- An explosion-proof version of the model iPR-B3
- Suitable for all applications in explosion-proof areas
- Certified according to the European classification ATEX II 1 G Ex ia IIC T4 Ga
- Permanent inline real-time measurement of the concentration of dissolved solids
The iPR-EX is a fully automatic process refractometer for direct measurement of dissolved solids and for process monitoring and control. The main features of this critical-angle refractometer are a sapphire prism and high-resolution photodiode array with no influence of color or turbidity of the medium on the measuring result. The instrument enclosure is made of stainless steel making it chemical resistant, food-safe, hygienic, and allows for process temperatures up to 120 °C (with connected water cooling) and pressures up to 1 MPa.
The explosion protection consists of an intrinsically safe, single-certified sensor, which is installed in a hazardous area. The measuring signals are routed to the non-explosive area via cable (maximum length 500 m) and connected to 4 zener barriers. An RTU Modbus or serial RS 485 interface is used to communicate with the central control system.
Schmidt + Haensch also offers a process control unit for installation outside the hazardous area. The 7“ touch screen can be individually configured and the measured data can be output via Ethernet, 24 V, or 4-20 mA signal or control a relay. For data transmission to other systems, serial RS 232, 485 interfaces, a CAN bus or UPC server are also available.
Up to two measuring heads can be connected at the same time.
|Standards||ATEX II 1 G Ex ia IIC T4 Ga
IEC in preparation
|Measuring range||1,32000 – 1,52000 nD|
|Ambient temperature||-20 °C to +65 °C|
|Process Temperature||-20°C to +120 °C*|
|Temperature resolution/precision||0.01°C / ±0.2°C (0° to 70°C)|
|Process pressure||0 to 1 MPa (145 psi, 10 bar)|
|Wetted parts||Sapphire (prism), stainless steel, FKM|
|Protection class||IP 67|
|Light source / wavelength||LED, 589 nm|
|Interface, switches||ModBus, RS485 and 24V with external Zener barriers|
|Dimensions||330mm x 149mm (length x diameter)|
|Operation||1 and 2 measuring headsets are available, connectable with built-in Zener barriers|
|Display||7″ Touchscreen, 800×480 pixel|
|DIN rail parts (expandable)||Switch inputs (24 V) and outputs (24 V / relay / 4-20mA) / 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||85V … 265V 50/60Hz|
* with cooling by cooler circuit only, electronic max. +65°C