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| 产品简介： | |||
| Steel processors use water to cool bearings on the | |||
| rollers of their continuous casting machines. If the | |||
| casting machine loses water flow, the bearings will fail. | |||
| Alarms are required to notify casting machine operators | |||
| of this crucial loss of flow condition. The T21 flow | |||
| switch is installed in each cooling water line to ensure | |||
| this critical low-flow alarm. | |||
| The T21 can be used to monitor lube oil on bearings | |||
| and gears in rolling mills; and since a single gear costs | |||
| several hundred thousand dollars, its protection is vital | |||
| to the operation of the plant. | |||
| The T21 can also monitor the flow of cooling water on | |||
| pump seals in steel plants and furnaces. | |||
| 详细说明： | |||
| l Wide operating process | |||
| temperature range of | |||
| -100 to 392oF | |||
| l Removable, plug-in electronics | |||
| board | |||
| l Free of all moving parts that | |||
| can stick, coat or fail | |||
| l Self-heating sensor design | |||
| l Application flexibility | |||
| l Simplifies wiring | |||
| l High reliability | |||
| l Improves response time and | |||
| sensor durability | |||
| Input Power 115 VAC or 230 VAC, 50/60 Hz | |||
| 24 VDC (nominal) | |||
| Output Type 5A DPDT @ 250 VAC | |||
| Humidity 99% Non-condensing | |||
| Accuracy +0.5% of set point - 50oF range | |||
| Set Point Range Gases 0.5 to 500 feet/second | |||
| (Flow) Liquids 0.01 to 5 feet/second | |||
| Repeatability +1.0% of set point | |||
| Response Time 0.5 to 10 seconds | |||
| Sensor Length 2 inches to 120 inches* | |||
| Enclosure Environmental Rating NEMA 4 | |||
| Conduit Connection 3/4” NPT(F) | |||
| Stability T emperature compensated | |||
| over entire range | |||
| Ambient T emperature Range -40 to 140oF | |||
| (-40 to 60oC) | |||
| Process T emperature Range -100 to 392oF | |||
| (-70 to 200oC) | |||
| Process Pressure Range Vacuum to 3000 psig | |||
SOR T21 液位开关
