All LPR probes have the economy of replaceable electrodes that double as corrosion coupons, providing a significant advantage over other electrochemical and electrochemical noise probe designs with fixed electrodes. The average corrosion rate of the electrode, determined as coupon, is correlated with that from the electrochemical measurements, allowing verification of all of the important empirical and electrochemical scaling factors, which cannot be achieved by electrochemical measurements alone.
Probes which are not removable under system pressure are sometimes used for reasons of economy, laboratory testing, light duty operations, or special process limitations. These may be mounted with a NPT threaded connection. NPT connections are available with fixed or adjustable length.
Retractable probes are ideal for direct mounting into plant pipework or vessels and allow insertion or removal while under system pressure. Retractable process probes are introduced into the system through a stuffing box mounted external to a valve. A specially-designed retracting device is available for insertion or removal of probes at pressures too high to permit safe operation by hand (above 150 psi requires over 50 lb. Insertion force).
Probes that are removable under system pressure are particularly useful to enable inspection or change out of probes without shutting down or isolating the system. Retrievable process probes are sealed into the system in a COSASCO® access fitting. A separate COSASCO® service valve and retriever is used for insertion and removal of the probes under system pressures.
Probes which are not removable under system pressure are sometimes used for reasons of economy, laboratory applications or special process limitations. These may be mounted with a flange or NPT threaded connection. NPT connections are available with fixed or adjustable length.
LPR probes are ideal for direct mounting into plant pipework or vessels and allow insertion or removal while under system pressure. The electrode seals are suitable for all pH ranges. These probes employ two replaceable, identical electrodes which are mounted at the end of the probe by threaded, ... [more]
LPR Retrievable probes employ two identical electrodes which are mounted at the end of the probe by threaded, insulated, glass-sealed studs. The glass seals provide high pressure integrity. The probe is sealed into the hollow plug of the access fitting with a ceramic filled teflon seal. Two ... [more]
Temperature is one of the most important controllable factors affecting corrosion rate, particularly in refineries, chemical and petrochemical process plants. A rule of thumb is that corrosion rates double for each 10ºC temperature rise. The ability to rack temperature and corrosion rate ... [more]
Electrical Resistance (ER) and Dual Sensor Temperature ER probes are designed for safe installation and operation in water applications. Certain accessories are required based on pressure, temperature, etc., including retractable probe safety clamps, intrinsic safety barriers, ... [more]
Cosasco LPR electrodes are manufactured from certified materials in a wide range of metals and alloys. A high quality 8-16 RMS surface finish and machined profile ensures uniform current density over the entire electrode surface. Electrodes are packaged in pairs with VCI (Vapor Corrosion ... [more]