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| CM3769: Interstitial Switch, for double-wall tanks and pipes | |
CM 系列
间质性液位开关
Combine Instruments Company's Interstitial Switch is a thin profile device designed for double-wall tanks and pipes. The 3/8" high switch is ideal for underground tanks and piping where the double-wall construction needs to be monitored for product release from the inner tank. It can also be used to signal the presence of liquid leaks or overflows in any containment area by connecting to a suitable alarm indicator. The avoidance of potential cleanup costs through early detection of leaks is well worth the cost of this unit.
The CM3769 Interstitial Switch is constructed of a Valox 420 housing and foamed polypropylene float with a stainless steel pivot pin. The standard CM3769 model comes with 10' of Halar-jacketed cable.
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 This model is available for same-day shipment through Combine's Switch In-Time program. . |
Typical Installation
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| Features: |
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Thin profile |
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Wide range of electrical voltages |
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Full choice of alarms or control systems |
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Easy installation | | |
| Specifications: |
| Materials |
Body – Valox 420
Float – Foamed polypropylene
Cable – 10', two conductors, Halar jacketed |
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| Temperature |
105°C (221°F), maximum |
| Pressure |
50 PSIG, maximum |
| Switch Rating |
30 Watt, SPST |
| Operation |
Normally Closed (NC), open on liquid rising |
| Approvals |
UL, CE |
Current &
Voltage
Ratings |
Current Amps
(Resistive)
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Voltage |
| 0.14 |
240 AC |
| 0.28 |
120 AC |
| 0.07 |
120 DC |
| 0.28 |
24 DC | | | |
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