In-line Process Refractometer iPR HR²

Order no.: iPR HR²
£ 9,743.00
£ 11,691.60
price ex. (VAT / delivery)
Refractive index
nD, Brix
Delivery time: min. 4 weeks
Fully Automatic Inline Process Digital Refractometer iPR HR² "High Resolution"

The fully automatic iPR HR² (High Resolution) digital refractometer continuously measures the refractive index and thus the concentration of solids in solution or the mixing ratios of binary or quasi-binary liquid mixtures. They are especially designed for the control of liquids with very low solid concentrations (e.g. light drinks) and they have a very high resolution and accuracy. 

The iPR HR² is a stand-alone process sensor with integrated electronics. Its special design and electronic equipment make it highly flexible and easy to handle. The device is programmed via WINDOWS based software. Optionally, a data logger is available. The iPR measuring head can be installed in pipes, reactor vessels, mixing tanks, kettles, boiling pans and evaporators, using different weld-in flanges.

- Permanent inline real time concentration measurement
- High resolution and accuracy
- For applications with very low solids content
- Stand-alone sensor with integrated electronics
- Adjustable digital limit switches
- IP69K protection TÜV tested
- Chemical resistant
- Suitable for food
- CIP and pipe pig capable

- Pharmacy
- Nutraceuticals
- Diet drinks
- Salinity
- Low residual concentrations in the condensate

Measuring range 1.3320 - 1.3720 / 0 - 25 Brix 
Resolution 0.000005 nD / 0.002 Brix B2: 0.00002 nD / 0.02 Brix
Accuracy ±0.00004 nD
±0.02 Brix
(±0.01 to 2 % Brix at 20 °C / 68 °F) 
Ambient temperature 0 °C to 45 °C / 32 to 113 °F
Process temperature (max.) +100 °C / 212 °F without water cooling
+150 °C / 302 °F with built-in water cooling
Process temperature (min.) -10 °C
Process pressure (max.) 1 MPa (145 psi, 10 bar)
Additional Information
Prism YAG
Process contact material YAG, stainless steel optional: PTFE
Protection class IP 69 K tested by TÜV Rheinland
Light source / wavelength 589 nm LED

Interfaces, switches


Power supply 

2 galvanically isolated 4-20 mA outputs
2 switching outputs (limit switch, 1 ampere)
serial interface, optionally RS 232, 422 or USB

24 VDC

1 x iPR HR² Process refractometer 
1 x User manual