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| Cool Air Incorporated > Products > Ammonia Leak Detector LBW-50 > Questions and Answers |
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COOL AIR INCORPORATED Questions and Answers We have provided the answers to those questions to further inform anyone wishing to purchase and or sell the Ammonia Leak Detector. Question 1 Sensitivity range is adjustable from 30 PPM to 800 PPM. Early warning alarm trip point is set at 25 ppm (not adjustable). Question 2 State and local codes usually stipulate concentrations at which corrective action must be taken; e.g., sound alarm, shut liquid line solenoid valve(s), energize exhaust fans, etc. An accepted industry standard is 100 PPM with necessary corrective action to reduce this concentration level. Note that most people start to smell ammonia at 50 PPM. At 200 PPM, an experienced ammonia serviceman could work in this environment for short durations. An inexperienced person not familiar with ammonia would become very alarmed and probably experience noticeable discomfort. At 200 PPM, every person has to wear an approved gas mask. Question 3 Yes. This Ammonia Leak Detector has an extra set of contacts to start an exhaust fan system, close an electric operated king valve, sound an in-house alarm system and shut down all prearranged compressors. Question 4 9” high by 7” wide by 4” deep. Question 5 At the present time, a sensor can be located up to 500 ft. away from the instrument. If this feature is desired, please allow 3 additional days for assembly. Question 6 NEMA 1, 3, 4, 4X and non-NEMA rated enclosures. Question 7 The Ammonia Leak Detector can be installed in rooms that have a temperature range of -50°F to +125°F. The warmer the room, the quicker the response time. This difference in response time from high temperature to low temperature is less than one minute. Question 8 The Ammonia Leak Detector will reset
automatically after the concentration of ammonia has been reduced
below the
set point. |
Question 9 This can best be answered by making an analogy of a person sensing ammonia by smell and the Ammonia Leak Detector sensing ammonia via its sensor. As stated earlier, most people start to smell ammonia at approximately 50 PPM. Therefore, the Ammonia Leak Detector can sense ammonia gas just as fast as any person could. The underlying determining factor in deciding on how many Ammonia Leak Detectors are required for a given room area depends on the air circulation within the room and room size. Question 10 The Ammonia Leak detector can be connected to an alarm and monitoring system. The circuit board is factory wired to a terminal strip for this purpose. Question 11 While some limited testing has shown the sensor to be sensitive to paint fumes and alcohol, these substances would not normally be expected to infiltrate refrigerated rooms. It is not recommended to install the Ammonia Leak Detector in apple cold storage warehouses. Apple cold storage areas give off a gas called ethylene. The concentration can build up from 200 PPM to 2,600 PPM and, at the present time, the sensor will likely pick up this gas and trigger the alarm. Question 12 We supply multiple Ammonia Leak Detectors for monitoring various rooms with a single indicating panel which could be installed in the main equipment room or control room. The indicating panel requires the individual Ammonia Leak Detectors to be low voltage wire to the panel and enables an individual to monitor the various Ammonia Leak Detectors from a single location. There is no limit to the number of sensors that can be connected to one central supervisor panel. Question 13 3 Pounds. Question 14 120
VAC — 1 AMP Question 15 20 sensors can be connected to the analog central supervisory panel. 32 sensors can be connected to the digital central supervisory panel. Question 16 Yes. Model LBW-50 incorporates a factory-installed early warning alarm terminal strip. |
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