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A3311/022-000

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Emerson A3311/022-000 is a wall-mounted speed and key monitor with internal eddy-current converters.
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Technical specifications for A3311/022-000

  • Manufacturer:
    Emerson
  • Part Number:
    A3311/022-000
  • Product Family:
    Epro
  • Product Type:
    Speed and Key Monitor with Internal Eddy-Current Converters
  • Stock:
    1
  • Converter arrangement:
    Internal converter; LEMO sensor socket
  • Frequency range:
    0 to 20 kHz; up to 65,535 rpm subject to frequency
  • Buffered outputs:
    2 outputs, 2 to 10 V
  • Current outputs:
    2 isolated 0/4 to 20 mA; 500 Ω maximum
  • Relay outputs:
    5 make-contact relays; 48 VDC, 1 A, 50 W maximum
  • Supply:
    24 VDC nominal; 18 to 31.2 VDC; 6 W maximum
  • Operating temperature:
    -20 to 65°C
  • Protection:
    IP65
  • Housing:
    Corrosion-resistant aluminum; wall mounting
  • Weight:
    1.3 kg
  • Tariff Code:
    9031809090
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Sensor Selection Output Mapping Troubleshooting Application
  • Confirm the internal-converter /022-000 order code
  • Match trigger settings to the actual sensor and target
  • Prove analog and relay outputs before returning the machine to service

Emerson A3311/022-000 is a compact speed and key monitor with internal eddy-current converters for small rotating-machinery installations.

It provides software-configurable speed or phase processing, buffered and isolated analog outputs, and five relay outputs in a wall-mounted IP65 aluminum housing.

Before replacement, confirm the exact /022-000 internal-converter code, sensor and target geometry, trigger behavior, output scaling, relay logic, supply, wiring and saved configuration.

Availability, condition, price, and shipping time for A3311/022-000 are confirmed during quotation.

Emerson A3311/022-000 Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Use the documented eddy-current sensor and LEMO interface
  • Verify target material, key geometry and probe gap
  • Check signal amplitude over the complete speed range
  • Retain speed and key channel assignments
  • Verify 0/4 to 20 mA scaling and buffered-output polarity
  • Match all five relay functions and delays to the approved logic
  • Inspect trigger stability when readings fail only at low speed
  • Check sensor gap and target runout before changing configuration
  • Verify power, grounding and relay suppression when resets occur during switching
  • Speed monitoring on small turbines and compressors
  • Key/phase-reference output for vibration analysis
  • Local speed and relay protection on pumps and fans
Description
A3311/022-000 is an Emerson AMS 3311 wall-mounted speed and key monitor with internal eddy-current converters.

It covers 0 to 20 kHz, provides two isolated 0/4 to 20 mA outputs and five make-contact relays, and uses an IP65 aluminum housing.

Confirm the /022-000 internal-converter code, LEMO sensor interface, target geometry, output scaling and relay assignments before replacement.
Alternative Names
A3311/022-000 A3311-022-000 A3311022000 Emerson A3311/022-000 AMS 3311 A3311/022-000
Technical notes
Emerson A3311/022-000 uses internal eddy-current converters and a LEMO sensor connection. A3311/022-020 uses external converters and is not a drop-in replacement.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How does Emerson A3311/022-000 differ from A3311/022-020?
The /022-000 model contains internal eddy-current converters and a LEMO sensor connection; /022-020 is intended for external converters and is not a drop-in wiring substitute.
Which machines are a good fit for Emerson A3311/022-000?
It is intended for lower-channel-count speed or key monitoring on small steam, gas and hydro turbines, compressors, pumps and fans where the documented sensor arrangement is suitable.
What sensor information is needed before ordering Emerson A3311/022-000?
Record the exact eddy-current sensor, target dimensions and material, operating speed range, key geometry, gap, connector and whether the application needs speed, key or both outputs.
Why can Emerson A3311/022-000 indicate speed but produce an unreliable key pulse?
Check target width, probe gap, trigger level, polarity, shaft runout, minimum pulse duration and the configured function for each channel.
Can Emerson A3311/022-000 relay outputs drive any trip load directly?
No. Verify contact voltage, current and power limits, inrush, suppression and the site's safety architecture; use an interposing relay when required.
What should be saved before replacing Emerson A3311/022-000?
Export the configuration and record sensor type, trigger values, speed and key scaling, analog-output ranges, relay assignments, latches, delays and all terminal connections.
How should Emerson A3311/022-000 be commissioned?
Compare speed with an independent reference, verify key timing and buffered signals, check both analog outputs, prove each relay and latch under controlled conditions, and document power-cycle recovery.

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