FOXBORO,FBM202
FOXBORO,FBM202
Invensys FBM202
FOXBORO,FBM202
FOXBORO,FBM202
Invensys FBM202
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FBM202

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Foxboro FBM202 is an eight-channel isolated thermocouple and millivolt input module for temperature and low-level signal acquisition.
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Technical specifications for FBM202

  • Manufacturer:
    Invensys
  • Part Number:
    FBM202
  • Product Family:
    Foxboro
  • Product Type:
    Eight-Channel Isolated Thermocouple/mV Input Module
  • Stock:
    1
  • Input channels:
    8 thermocouple or millivolt channels
  • Reference-junction channel:
    1 isolated four-wire 100 Ω platinum RTD at the TA
  • Supported thermocouples:
    B, E, J, K, N, R, S and T
  • Millivolt input range:
    -10.5 to +69.5 mV
  • Raw measurement span:
    71.419 mV represented by 65,535 counts
  • Millivolt accuracy:
    ±0.03% of span (±24 µV) at 25°C
  • RTD reference accuracy:
    ±0.03%
  • Temperature coefficient:
    ±50 ppm/°C
  • Input impedance:
    10 MΩ
  • Isolation test:
    600 VAC for one minute; input safety limits still apply
  • Power consumption / heat:
    3 W maximum
  • Module Fieldbus:
    Redundant 2 Mbps
  • Input power:
    24 VDC +5%, -10%
  • Operating temperature:
    -20 to +70°C
  • Storage temperature:
    -40 to +70°C
  • Relative humidity:
    5 to 95%, noncondensing
  • Contamination class:
    ISA-S71.04 Class G3
  • Dimensions:
    4.5 × 10.2 × 10.4 cm
  • Weight:
    0.284 kg
  • Tariff Code:
    8538900000
  • Country of origin:
    USA
  • 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 Cold Junction & Termination Commissioning Application
  • Use FBM202 only for its documented FBM202 function and matched field signal type
  • Confirm the exact module order identity, termination assembly and cable before replacement
  • Preserve channel configuration, field wiring and diagnostics before removing FBM202

Foxboro FBM202 is an eight-channel isolated thermocouple and millivolt input module for temperature and low-level signal acquisition.

FBM202 is the functional designation; RH926EQ is the current electronic-module part number.

Before replacement, verify the exact label, signal range, termination assembly, cable, channel configuration, field wiring and system compatibility.

Availability, condition, price, and shipping time for FBM202 are confirmed during quotation.

Foxboro FBM202 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.

  • Match every channel to the configured thermocouple type or millivolt range
  • Preserve polarity and use correct thermocouple extension wire
  • Verify the reference-junction RTD before evaluating channel accuracy
  • Confirm compression, ring-lug or baseplate termination hardware
  • Inspect the TA reference junction and terminal material
  • Keep the module, TA and cable identities in the maintenance record
  • Inject traceable low-level references at the field terminals
  • Test open-circuit burnout and diagnostic behavior
  • Compare the restored cold-junction value with a known temperature
  • Multi-point thermocouple temperature measurement
  • Isolated low-level millivolt acquisition
  • Temperature retrofit requiring preserved TA cold-junction compensation
Description
Foxboro FBM202 is an eight-channel isolated thermocouple and millivolt input module for temperature and low-level signal acquisition.

It converts the documented field signals into isolated digital values for the I/A Series or EcoStruxure Foxboro DCS control database while reporting channel and module diagnostics.

Before installation, verify the exact order-number relationship, signal range, termination assembly, cable type, field power, grounding, saved configuration and baseplate compatibility.
Alternative Names
FBM202 FBM 202 Foxboro FBM202 Invensys FBM202 Invensys Foxboro FBM202 I/A Series FBM202
Technical notes
FBM202 is the functional designation; RH926EQ is the current electronic-module part number. These codes identify the electronic FBM202 module, not its TA; confirm the exact order code, cold-junction hardware and channel configuration before 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.
Can Foxboro FBM202 directly replace another thermocouple input module?
Not automatically. Verify the exact module identity, matching termination assembly and cable, supported thermocouple or millivolt input types, channel configuration and cold-junction compensation before replacement.
Why can several Foxboro FBM202 channels show the same temperature error?
A shared cold-junction problem is likely; inspect the TA reference-junction RTD, TA temperature, terminal material, cabinet heat and configured compensation before replacing sensors.
Can Foxboro FBM202 reuse any thermocouple terminal assembly?
No. Confirm the documented compression, ring-lug or baseplate termination assembly, its reference-junction hardware and the exact terminal map.
What happens if thermocouple polarity is reversed on Foxboro FBM202?
The indicated temperature moves in the wrong direction or becomes implausible. Correct the alloy extension wiring and polarity rather than compensating for the error in software.
How should an open-sensor fault be checked on Foxboro FBM202?
Confirm the configured burnout response, inspect sensor and extension-wire continuity, terminal tightness and channel diagnostics, then test with a traceable simulator.
What must be saved before replacing Foxboro FBM202?
Save every channel type, range, scaling, alarms and burnout behavior plus the exact module order code, TA identity, terminal map and cold-junction diagnostics.
How should Foxboro FBM202 be commissioned after replacement?
Verify the reference-junction reading, inject traceable thermocouple or millivolt references, test polarity and burnout behavior and compare process values before return to service.

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