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| Switch & Sensor Specifications
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| The Moniteur TTL sensing
system is an advanced and reliable method of position monitoring
developed for today's sophisticated process control systems. The
highest quality reed-type switching elements available are enclosed
and encapsulated in a flexible moisture-proof bedding compound,
protecting them from contaminants and shock to 38g. Switching
elements are actuated with neodymium magnets sealed in their cams
to protect and prevent dislodgement and subsequent system failure.
An internal stainless steel Loc-Ring is employed to secure the
VPT shaft to the enclosure, preventing vertical shaft motion from
corrupting output signals. Four different switching elements are
available, each meeting different user needs. |
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TTL Switching Elements Available
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| TUNGSTEN TTL
- The choice for high power AC and DC switching applications.
Durable tungsten contacts handle up to 3A - 120VAC / 2A - 24VDC.
MTBF 800,000 cycles at full load. |
| RHODIUM TTL - The
choice for reliable low power 24 VDC switching applications. Rhodium
contacts have 80% less contact resistance than Tungsten TTL. Rated
to 1A - 24VDC. MTBF 1,000,000 cycles at full load, much higher
at low loads. |
| BIFURCATED TTL - Premium Bifurcated SPST contacts with “wiping action”
assure outstanding reliability for ultra low power / voltage applications
(10mA @ 5 VDC minimum). MTBF 2,000,000 cycles. |
| KRYSTAL TTL
- Rhodium TTL contacts combined with LED set lights make switch
setting easier in the field. MTBF 1,000,000 cycles. |
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Specifications
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Switch Type
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AC Rating
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DC Rating
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Contacts
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form
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Tungsten TTL
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3A-120V
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2A-24V
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SPDT
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C
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Rhodium TTL
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1A-120V
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1A-24V
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SPDT
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C
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Bifurcated TTL
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3A-120V
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2A-24V
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SPST
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A
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Krystal TTL*
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0.3A-120V
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0.2A-24V
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SPDT
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C
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*Krystal TTL includes pure Rhodium contacts and
LED set lights |
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Applications for TTL Switches
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| Areas
with corrosive or humid environments
that could corrode exposed contacts |
| Critical
position monitoring applications
requiring reliability and higher cycle life |
| Explosion-proof
environments. Moniteur Sentinel
series is UL listed and CSA** approved for Class I, Division
2 - Groups A, B, Class 1, Division 1 Groups C, D and Class
II, Division 1, Groups E, F, G. |
| Nonincendive
(Class 1, Division 2) environments.
Article 501-3 (b) of the NEC (National Electric Code) permits
the use of general purpose enclosures (such as the Moniteur
Watchman or Survivor Series) in Class 1, Division 2 locations
when the current interrupting contacts are sealed within
a hermetically sealed chamber. |
| Intrinsically
safe environments. TTL switches
are passive devices and can be used in Intrinsically Safe
applications with an approved current and voltage-limiting
barrier. |
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