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Product
Toxic Gas Detector
SMC 4501-XX
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The SMC 4501-XX Detector monitors toxic gases such as Hydrogen Sulfide, Carbon Monoxide, Oxygen Deficiency, Chlorine Dioxide, and others. Utilizing 2-wire loop-powered technology, the 4501-XX requires less wiring, leading to better protection from wiring errors.
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Product
Digital Pressure Gauges
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Digital gauges with alarms, DC loop-powered gauges, differential pressure gauges, and a variety of features. They provide fast results with clear readability and very high accuracy.
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Product
Vibration/Temperature Transmitters
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Columbia Research Laboratories
Columbia's Solid State Loop-Powered Vibration and Temperature Sensors are specifically designed for industrial machinery monitoring. The Sensor continuously measures both vibration level and temperature, along with key machinery health parameters, and transmits the data directly into a PLC, providing accurate level monitoring and with support alarm and machinery shutdown capabilities.
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Product
Loop-Powered Transmitters and Drivers
4-20mA
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Loop-Powered Transmitters convert the output from proximity probes, seismic sensors, into a 4-20mA DC current, which is proportional to the input being measured. The transmitter converts the displacement or vibration signal to DC voltage and/or current for a DCS or PLC system. They control a 4-20mA current loop for a specified vibration range (ex. 0-5 mils peak-to-peak). The transmitters have a two-wire hook-up, powered solely by the loop current and have a power supply range of 15 to 36 volts.
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Product
Temperature Sensors
TT420-LT
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Features• 2-wire, loop-powered 4-20 mA analog output• Attachment probe, sensor, and 2-wire 4-20 mA signal conditioner• Integral 1/2" flexible liquid-tight conduit fittings• TT420Z-LT 1/4” stainless steel probe with 1/8 NPT adapter• TT420S-LT 3/8-16 threaded stud probe • FM approved, Dust Ignition-proof• Class II and III, Div I (E, F, G); NEMA 4
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Product
Temperature Sensors
TT420
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Features• 2-wire, loop-powered 4-20mA analog output• Attachment probe, sensor, and 2-wire 4-20 mA signal conditioner• Compatible with PLCs, meters, and data acquisition systems• No user calibration• TT420Z 1/4" stainless steel probe • TT420S 1/4-28 threaded stud – screws into any 1/4-28 tap• TT420F mounts onto any flat surface• UL listed, Intrinsically Safe (IS)• Class I, (C, D) and Class II, (E, F, G)
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Product
Signal Conditioners
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Process transmitters isolate, filter amplify, and convert sensor signals to 4-20mA current or 0-10V voltage signals for interfacing with controllers and other instrumentation. Select from 2-wire loop-powered 4-20mA transmitters, 3-wire DC-powered transmitters, or 4-wire AC/DC-powered transmitters. 3-wire and 4-wire models are available as 4-20mA transmitters or voltage transmitters. DIN-rail and field-mount version are available. Configuration is easy with Windows software, push-buttons, switches, or pots for span/zero settings depending on the series.
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Product
Limit Alarms
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Process limit alarms monitor sensor or process current input signals and trip a relay output if the input exceeds a user-defined hi/lo setpoint limit. Select from AC-, DC, and loop-powered models. Configuration is easy with Windows software, push-buttons, switches, or pots for settings depending on the series.
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Product
Loop Meters
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The CM-1TB + XL-1 are modern digital current loop-powered meters that convert standard loop current to engineering units. They feature high accuracy and a large 0.6-inch LCD display. Proven reliability combined with low cost has earned these meters world-wide acceptance, with thousands in use.
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Product
Speed Sensor Intrinsically Safe
ST420
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Features• 2-wire, loop-powered 4-20 mA analog output• No user calibration – works right out of the box• Standard and custom measurement ranges available• Reverse-wiring protected• Works with Electro-Sensors magnetic pulser discs / wrapsRugged stainless steel M18x1 housing; UL listed, Intrinsically Safe (IS); Class I, Div I (C, D) Class II, Div I (E, F, G)
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Product
Digital Meters
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Hoyt Electrical Instrument Works Inc.
Low-cost, high-performance replacement for many OEM DPMs◊ Optional Red, Green or Amber backlightingSnap-in bezel mount eliminates mounting hardwareResistant to RF and EMI3 1/2 digits with high-contrast LCD4-20mA loop-powered inputUser-selectable, displayed engineering units
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Product
Standard Signal Loop-Powered
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Knick Elektronische Messgeräte GmbH & Co. KG.
Isolation and 1: 1 transmission of 0/4 ... 20 mA current signals without additional auxiliary power. Also for use in hazardous areas. Particularly high reliability and certified functional safety up to SIL 3 / PLe.
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Product
Loop-Powered Digital Panel Meter
88-PRO
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The 88-PRO Process Meter may be connected directly to a 4-20 mA, 10-50 mA or 1-5 mA current loop, with no need for additional power to the meter. This is because the meter is powered directly by the current loop, developing a maximum voltage drop of 2.5 V.












