DESCRIPTION:

The HI2931B/5 is Hanna's answer to noise related ORP measurement problems and the technical inability to use conventional meters with standard ORP probes. Now with the AmpHel electrodes you can drive a standard mV meter over longer distance cables, up to 50 meters away without any impedance or noise problems!

Conventional ORP Technology:
Due to the high resistance of the glass membrane of a ORP electrode, conventional ORP measuring systems utilize high impedance signal transmission. Bad insulation of the electrode connectors and cables results in high susceptibility to leakage, stray noise and humidity which tends to give erroneous ORP readings. As a result, particular care has to be taken in connecting the electrode to the metering system. For this conventional system, the cable length is restricted to typically less than 10 meters because of the low signal transmission. For measurements to be accurate the use of a high impedance meter is required and it is necessary to provide for high insulation in the meter connections. For these reasons the conventional ORP measuring system is delicate.

Breakthrough by HANNA:
With an amplifier built into the electrode, the problems associated with high impedance is now isolated to one location. The high impedance circuitry is now located at the top of the electrode and is completely encapsulated. As a result you now have low output impedance signals from the electrode to the metering system. This means you can use ordinary connectors with long unshielded cables and an ordinary meter. This breakthrough in ORP technology provides you with a rugged system for all industrial ORP measurements and monitoring.

Characteristics & Adavantages:

• Rugged design with epoxy body housing and sensor protection.
• Battery life of 2 years.
• Very low output impedance (typically 10 Kohms)
• Instantaneous Response
• Usurpassed stability
• Connections with long unshielded cables (up to 50 meters)
• Hgh mechanical and electrical noise immunity
• Compatibility with existing ORP meters in the market
• On-line process control applications
• Double junction reference system for minimization of contamination due to clogged pores or ingress of sample

SPECIFICATIONS:

HOW TO ORDER:

HI2931B/5: ORP Electrode with pre-amplified low impedance signal..... $150.00

ACCESSORIES:

HI7020L: ORP 200-275mV Calibration Solution, 460 mL Bottle..... $Check Pricing
HI7061L: General Cleaning Solution, 460 mL Bottle........$Check Pricing

How To Place an Order by Phone, eMail, or Fax