Suitability of an operational state of a steam-using equipment is accurately estimated to allow for early detection of a sign of abnormality in the steam-using equipment. A steam-using facility monitoring system (M) comprised of a steam-using equipment (4) includes a control state detector (D1) that detects a state of a steam controller (1) provided in a steam pipe (2) accompanying the steam-using equipment (4), and an operational state estimating means (S) having a signal input unit (S1) that inputs a detection signal (σi) from the control state detector (D1) and an operational state estimation unit (S2) that estimates the operational state of the steam-using equipment (4) based on one inputted detection signal (σi) or a preset particular combination of detection signals (σi).

Disclosed is a deterioration determination device for a liquid pumping apparatus including: a casing that forms a reservoir space for storing liquid flowed thereto; a feed valve that introduces working gas into the reservoir space; an exhaust valve that releases the working gas from the reservoir space; and a valve operating mechanism having a float arranged in the reservoir space, and performing a pumping stroke in which the liquid is pumped from the reservoir space under a pressure of the working gas by opening the feed valve and closing the exhaust valve when the float moves up to a predetermined high level, and an inflow stroke in which the liquid flows into the reservoir space and the working gas is released from the reservoir space by closing the feed valve and opening the exhaust valve when the float moves down to a predetermined low level. The deterioration determination device includes a first pressure sensor arranged to communicate with a lower portion of the reservoir space to detect a pressure of a liquid layer in the reservoir space, and a deterioration determination unit that determines a degree of deterioration of the valve operating mechanism based on a change in the pressure detected by the first pressure sensor.

Systems and methods for testing steam traps or other similar devices in a hot water or steam system are described. A tester includes a wand that is handheld that can communicate with a handheld electronic device which in turn can communicate with a central monitor for storing and compiling readings as historical profile data. The wand includes a probe to physically contact the device to acoustically sense the performance of the device. The probe includes a probe tip and a stack of acoustic elements, an electrode, a stack mass, and a head to covert the acoustic signal into an electrical signal. The handheld device includes circuitry to process the information, interact with the user, and transmit information to and from the handheld electronic device and/or the central monitor.

Systems and methods for testing steam traps or other similar devices in a hot water or steam system are described. A tester includes a wand that is handheld that can communicate with a handheld electronic device which in turn can communicate with a central monitor for storing and compiling readings as historical profile data. The wand includes a probe to physically contact the device to acoustically sense the performance of the device. The probe includes a probe tip and a stack of acoustic elements, an electrode, a stack mass, and a head to covert the acoustic signal into an electrical signal. The handheld device includes circuitry to process the information, interact with the user, and transmit information to and from the handheld electronic device and/or the central monitor.

Systems and methods for testing steam traps or other similar devices in a hot water or steam system are described. A tester includes a wand that is handheld that can communicate with a handheld electronic device which in turn can communicate with a central monitor for storing and compiling readings as historical profile data. The wand includes a probe to physically contact the device to acoustically sense the performance of the device. The probe includes a probe tip and a stack of acoustic elements, an electrode, a stack mass, and a head to covert the acoustic signal into an electrical signal. The handheld device includes circuitry to process the information, interact with the user, and transmit information to and from the handheld electronic device and/or the central monitor.

Systems and methods for testing steam traps or other similar devices in a hot water or steam system are described. A tester includes a wand that is handheld that can communicate with a handheld electronic device which in turn can communicate with a central monitor for storing and compiling readings as historical profile data. The wand includes a probe to physically contact the device to acoustically sense the performance of the device. The probe includes a probe tip and a stack of acoustic elements, an electrode, a stack mass, and a head to covert the acoustic signal into an electrical signal. The handheld device includes circuitry to process the information, interact with the user, and transmit information to and from the handheld electronic device and/or the central monitor.

Devices, systems, and techniques relating to steam trap monitoring are described. These include battery-less steam trap monitors that run on power harvested from their environments, systems for acquiring steam trap monitor data for the traps in a facility or across multiple facilities, and techniques for processing steam trap monitor data to reliably determine the status of individual steam traps and potentially other system parameters.

A position detection sensor includes a rod-shaped contact part having a distal end and a proximal end, the contact part being configured such that an outer peripheral surface thereof at the distal end contacts an object and the contact part pivots about the proximal end in accordance with displacement of the object; a movable part configured to move with a pivot of the contact part; and a magnetic switch configured to sense a presence of the movable part and detect a position of the object when the movable part moves to approach a predetermined distance. The contact part is elastic and includes a columnar outer member constituting an outer peripheral portion of the contact part and a rod-shaped inner member inserted in the outer member and having an elastic modulus larger than that of the outer member.

A position detection sensor includes a rod-shaped contact part having a distal end and a proximal end, the contact part being configured such that an outer peripheral surface thereof at the distal end contacts an object and the contact part pivots about the proximal end in accordance with displacement of the object; a movable part configured to move with a pivot of the contact part; and a magnetic switch configured to sense a presence of the movable part and detect a position of the object when the movable part moves to approach a predetermined distance. The contact part is elastic and includes a columnar outer member constituting an outer peripheral portion of the contact part and a rod-shaped inner member inserted in the outer member and having an elastic modulus larger than that of the outer member.

A monitoring system is disclosed. The monitoring system comprises: a nozzle steam trap (3) including a supply portion (10) into which water vapor is supplied, and a discharge portion (11) which discharges liquid water contained in the water vapor; a temperature measurer (20) that measures a temperature of the discharge portion; a transmitter (24) that transmits temperature information containing the temperature measured by the temperature measurer; a receiver (7) that receives the temperature information; a determiner (8) that determines whether an abnormality is present in the nozzle steam trap based on the temperature information; and a notifier (9) that issues a notice when the determiner determines that the abnormality is present. A first discharge-side reference temperature lower than the boiling point of the water and a second discharge-side reference temperature higher than the boiling point of the water are set for the discharge portion. The determiner determines that the abnormality is present when the temperature of the discharge portion contained in the temperature information is lower than the first discharge-side reference temperature or higher than the second discharge-side reference temperature.