¾” Probes and Combination Electrodes

Refex ¾“ probes are designed to the industry standard package for industrial probes and will fit into any ¾” NPT “socket” where pH measurement is made.  Available as combination electrodes or as separates, with a variety of cable lengths and with optional temperature sensing elements, Refex EC series probes give long life and exceptional performance over and above other sensors without the need to change piping and housings.

Refex reference sensors are designed for arduous applications particularly where fouling or poisoning conditions exist. The reference uses a highly stable non-porous polymeric interface instead of a traditional porous liquid junction as used by all conventional reference electrodes.  The active reference area is the whole of the outside surface of the electrode and this super large contact area means that the electrode is supremely resistant to coatings.  Poisoning effects are eliminated because the polymeric reference material is conductive to ions but not porous; the reference can operate electrically but electrolyte and process fluids are not exchanged.

A range of sample flow cells and dip tube mounting accessories is available to allow Refex ¾” probes to be installed in all applications while providing ease of access for maintenance and service.

12mm EC Series Electrode Specifications

pH Range	0 – 13 pH
ORP Range	2000mV
Temperature	0 – 90 °C / 0 – 194 °F
Pressure Rating	20 bar/ 300psi
Process Connections	¾” male NPT thread at both ends
Probe Size	1" diameter x 5.7" length
Cable Length	Standard cable lengths 1, 3, 5 10m.  Custom lengths available
Temperature Element	PT100, PT1000 or 3kohm
pH sensor Impedance	150 Mohm
Reference Impedance	<50kohms