Description
When non-toxicity is mandatory.
Whether a retrofit or a new installation, EasyFerm Bio HB pH sensors come with industry standard electrical connector options and temperature compensation. If connecting to a controller, a wide variety of adapter cables are available to mate with any device.
EasyFerm Bio HB pH sensors provide a reliable solution for installations into food processing, dairy, brewing, beverage, and other processes where biocompatibility and sanitary certification are required. The pre-pressurized reference design ensures accurate pH measurement while options such as the HB glass membrane provide minimal drift when frequent CIP cycles are encountered.
Traditional sensors offer a standard mV signal that works with existing bioreactors and transmitters. Arc sensors can be connected directly to the control system through 4-20mA or digital signals. Memosens sensors are fully compatible with all existing Memosens transmitters on the market.
Specifications
| a-length | 120mm, 225mm, 325mm, 425mm |
|---|---|
| Electrical Connector | S7/S8, K8, VP6, Arc, Memosens |
| Measurement Principle | Combination electrode; pH potential measured against reference |
| Measuring Range | pH 0 to 14 |
| Sensitivity | 57 to 59 mV / pH at 25 °C |
| Zero Point | 0 ± 20 mV |
| pH Glass | Hamilton type HB glass |
| pH Glass Resistance | Moderate |
| Membrane Shape | Spherical |
| Diaphragm | HP-Coatramic |
| Number of Diaphragms | 1 |
| Electrolyte | Pressurized Foodlyte |
| Reference System | Hamilton Everef-F, Silver ion barrier included |
| Liquid Earth | No |
| Temperature Sensor | Arc - Yes, Memosens - Yes, VP6 - Pt100/Pt1000, K8 - No, S7/S8 - No |
| Diameter | 12 mm |
| Process Connection | PG13,5 |
| Wetted Parts | Glass Ceramic VMQ (Silicone elastomer) |
| O-ring Material | FDA 21 CFR 177.2600; EG 1935/2004; USP <87>; USP <88> Class VI (121 °C) |
| Serial Number | Yes |
| Recommended Storage | Hamilton Storage Solution or 3 M KCl |
| Certificate | Yes, with measured values in Buffer pH 4.01 and pH 7.00 |
| Autoclavable | Yes |
| CIP | Yes |
| Steam Sterilizable | Yes |
| Operating Temperature Range | 0 to 140 °C |
| Sample min Conductivity | 100 µS/cm |
| Pressure Range bar g | 0 to 6 bar |
Specific Arc sensor specifications
| Analog Interface 1 | 4-20 mA for pH, programmable |
|---|---|
| Analog Interface 2 | 4-20 mA for Temp., programmable |
| Analog Interface 1 and 2 | Galvanically not isolated; pulse width modulation 3.5 kHz |
| Digital Interface | RS485 Modbus (max. 31 addresses) |
| Configurable Values | pH: pH, mV; Temperature: °C, K, °F |
| Temperature Sensor | NTC22 kOhm |
| Baud Rate | 4800, 9600, 19200, 38400, 57600,115200 bd |
| Operating Voltage | 7 to 30 VDC max. 150 mW |