Search Results

The Chlorine Sentinel II is intended for use by hemodialysis professionals as a secondary chlorine device to provide continuous monitoring of Combined Chlorine. It is not intended to replace the primary method of monitoring chlorine as part of the hemodialysis water treatment system. It functions completely independent of the water treatment system does not come into direct contact with feed water used to prepare dialysate.

Chlorine Sentinel II is a complete system that attaches to the drain of a hemodialysis water treatment system sample port. It detects dissolved combined chlorine in concentrations at or above 10 PPB by primary detection technology. It self-monitors for maintenance-required conditions and loss of electrical power. The Chlorine Sentinel II is self-testing. It uses chlorinated city water to automatically test the chlorine detecting functionality of the device once a day and records if the test passed, failed to detect chlorine, or didn't rinse out after detecting chlorine. The device is designed to use as little water as possible. The sampling water is only used for the length of time that it takes for the chlorine test to be completed. The customer determines how frequently the test needs to be taken from every 5 minutes to every 20 minutes. The user also sets the start time and end time for each day of the week. The Chlorine Sentinel II has two combined chlorine concentration set points. The user can set a warning set-point at a value of 0.01 PPM to 0.09 PPM. Once the chlorine concentration exceeds this value, the device will alarm at 2-HZ to warn the user of chlorine present at that set-point. The second set-point is factory set at 0.10 PPM. A chlorine concentration equal to or above the 0.10 PPM set-point will activate the buzzers and the red chlorine alarm indicators at 5 HZ for as long as the condition exists. The buzzers can only be muted for 3 minutes (then automatically reset) for as long as the condition exists. The alarms can be by-passed. When by-passed the pulsing lights will turn solid and the buzzer will double click over 15 minutes. The front cover of the device has two screens. The screen of the chlorine monitor indicates the presence of combined chlorine when the value is not 0.000. The touch screen is used to enter user data and show the statuses of the device.

The Nelson Sentinel Series Basic Chlorine Sentinel is an instrument that is intended for use by hemodialysis professionals as an auxiliary device to provide continuous monitoring of Total chloramines plus ammoniated free chlorine) concentration. It is not intended to replace the primary method for monitoring total chlorine as part of the hemodialysis water treatment system. It functions completely independent of the water treatment system and does not come into direct contact with feed water used to prepare dialysate.

The Nelson Sentinel Series Basic Chlorine Sentinel is a complete system that attaches to the drain of a hemodialysis water treatment system sample port. The Basic Chlorine Sentinel detects dissolved chlorine by an auxiliary meter detection technology, self-monitors for maintenance-required conditions, loss of electrical power, as well as two other system conditions such as flooding and the status of RO shutdown alarm. The device chlorine monitoring probe is preferably placed after the second carbon filter, before the RO machine or at the beginning of the patient water treatment loop. The device has three components - a lockable master control enclosure, a lockable probe/tester enclosure, and the remote module installed in the patient area. A chlorine concentration equal to or above the set-point (default: 0.10mg/L) will activate the buzzers and the red CHLORINE alarm indicators for as long as the condition exists. The buzzers can only be muted for 3 minutes (then automatically reset) for as long as the condition exists. The yellow AUTO-TEST OK/CL DETECTED indication will latch. The AUTO-TEST/CL DETECTED indication can be deactivated after the event by pressing the blue RESET PUSHBUTTON on the front cover of the controller. A probe failure or the activation of one of the auxiliary input relays will activate the yellow MAINTENANCE needed indicators as well as the Buzzers which will remain activated as long as the condition exists. However, the buzzers can be muted by the key mute switch while the maintenance issue is being resolved.

Nelson Water Systems' Water Purification for Hemodialysis is intended to be used for purifying the water used in hemodialysis treatment. It removes organic, inorganic, and microbial contaminants from the water.

The water purification system is a complete system accepting the influent facility water and providing purified water meeting AAMI standards for hemodialysis use. It removes organic, inorganic, and microbial contaminants from the water. The heart of the system includes carbon filters along with a reverse osmosis (RO) unit and/or portable exchange (PE) mixed-bed (MB) deionization (DI) tanks along with appropriate alarms. This equipment removes the oxidants such as chlorine and chloramines and mineral salts (dissolved solids) from the water. The specific configuration of the equipment will depend upon the customer's water quality desires (specifications) beyond the minimum AAMI standards. Pretreatment is used before the RO unit to match the specific influent water quality to those needs of the RO unit and/or final water specifications. Pretreatment can include pressure boosting, sediment and colloidal material filtration, water softening, pH balancing and specific element or compound reduction such as iron. The system usually includes a storage tank that is conical-bottomed and sealed. It has an air-filtered vent, checked over-flow, level switches and sprayer. Repressurizing pump(s) are used to deliver the water to the hemodialysis system. Deionization is used either to polish the RO water or to remove total dissolved solids (TDS) from the influent water. The latter will occur either in emergency conditions when an RO is being used in the system and it is being by-passed or as an alternative to an RO unit. When PE MB DI tanks are used, two tanks are always used with resistivity indicators/alarms following each one. Then following the tanks are a resin trap, sub-micron filter(s), and optionally a shut-down valve and ultraviolet (UV) disinfection. The system is self-monitored and alarms are activated when operator attention is needed. Pressure gauges and sample ports are strategically placed throughout the system for system performance monitoring. A conductivity monitor/controller is placed in sight of the nurses' station. Its probe is located at the end of the watertreatment system. Alarms at site and/or remotely located near the nurses' station sound when an alarm condition exists with the RO unit, the water level in the tank drops to a pre-set level, the conductivity at the exit of the watertreatment system exceeds the pre-set level, and if PE MB DI tanks are used, the outlet resistivity falls below the pre-set limit.