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Analog Devices Inc. 7B27-E-04-1
- Part No.:
- 7B27-E-04-1
- Manufacturer:
- Analog Devices Inc.
- Category:
- Sensor, Transducer Amplifiers
- Package:
- Datasheet:
-
7B27-E-04-1.pdf
- Description:
- MODULE ISOL THERMO-IN NON-LIN
- Quantity:
- Payment:
- Shipping:
Inventory:2,421
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Product details
Overview
7B27-E-04-1 from Analog Devices is a single-channel isolated thermocouple input signal conditioner for Type E thermocouples, delivering factory-configured +1 V to +5 V output linear with 0°C to +900°C input range, ±0.01% initial accuracy, and 100 Vrms continuous input-to-output isolation. It operates from +14 VDC to +35 VDC supply and is designed for industrial process control systems requiring high noise immunity and cold junction compensation.
For engineers reviewing the 7B27-E-04-1 datasheet, 7B27-E-04-1 pinout, 7B27-E-04-1 application, or 7B27-E-04-1 equivalent, key selection criteria include thermocouple type (E), output range (+1 V to +5 V), cold junction compensation accuracy (±1.0°C over +5°C to +45°C), 3 Hz bandwidth, and compatibility with 7B Series backplanes (AC1363) using universal 6-pin screw-terminal interface.
Technical Context
The 7B27-E-04-1 implements transformer-based isolation (100 Vrms) with internal DC/DC conversion for front-end power, amplitude modulation for signal transfer, and demodulation in the output stage. Its analog signal path includes a one-pole 3 Hz anti-alias filter pre-amplification and a two-pole low-pass output filter (–3 dB @ 3 Hz).
Cold junction compensation uses an embedded thermistor under the input terminal block, referenced to the backplane's CJC sensor; zero suppression and span stability are specified at ±0.005% (Vz)/°C and ±35 ppm/°C respectively. Input protection supports ±30 VDC continuous and meets ANSI/IEEE C37.90.1-1989 transient standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Type | Type E thermocouple, 0°C to +900°C range, linearized output |
| Output Range | +1 V to +5 V, low-impedance (<1 Ω), drives ≥2 kΩ loads |
| Accuracy | ±0.01% Span initial @ +25°C (±0.1% max); includes repeatability, hysteresis, nonlinearity |
| Isolation Rating | 100 Vrms continuous input-to-output common-mode voltage |
| Bandwidth | 3 Hz (–3 dB), two-pole low-pass output filter ensures stable step response |
| Cold Junction Comp. | ±1.0°C max error over +5°C to +45°C ambient, requires 7B Series backplane CJC sensor |
| Power Supply | +14 VDC to +35 VDC nominal +24 VDC; max 25 mA current draw |
Pinout & Package
7B27-E-04-1 uses a compact 6-pin screw-terminal module package (42.24 mm × 53.6 mm × 14.3 mm) compatible with 7B Series backplanes (e.g., AC1363). Pin assignments follow universal 7B Series layout with field-wireable terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 0 | SENSOR INPUT | Direct connection point for Type E thermocouple leads; no internal biasing |
| 1 | INPUT HIGH | Positive thermocouple lead terminal; protected to ±30 VDC continuous |
| 2 | INPUT LOW | Negative thermocouple lead terminal; referenced to terminal 5 (common) |
| 3 | POWER SUPPLY (DC) | +14 VDC to +35 VDC input; powers isolated input and output circuitry |
| 4 | OUTPUT VOLTAGE | +1 V to +5 V analog output; buffered, low-noise, low-impedance source |
| 5 | OUTPUT & POWER COMMON | Shared return for power supply and output signal; establishes reference for isolation barrier |
Key Features
| Feature | Design Value |
|---|---|
| Thermocouple Support | Factory-configured for Type E only (0°C to +900°C); no user reconfiguration |
| Isolated Output | Transformer-coupled 100 Vrms continuous isolation eliminates ground loops in multi-sensor systems |
| Cold Junction Compensation | Integrated thermistor-based CJC on backplane-dependent design; enables accurate absolute temperature measurement |
| Noise Performance | 0.4 mVrms (10 Hz–100 kHz), 0.6 µVpeak (0.1 Hz–10 Hz) output noise supports precision thermal monitoring |
| Hot-Swappable Operation | Validated for insertion/removal under full +24 VDC power without disrupting field wiring or adjacent modules |
Applications
| Industrial Process Monitoring | Furnace Temperature Control |
|---|---|
|
Use Scenario: Continuous temperature logging of molten metal handling equipment in foundries using Type E thermocouples exposed to thermal cycling and EMI. IC Role / Device Role / Timing Role: Signal conditioner providing isolated, linearized, cold-junction-compensated voltage output for PLC analog inputs. Use Value: Enables direct integration with 1–5 V input PLCs while rejecting common-mode noise up to 100 Vrms and maintaining ±1.0°C CJC accuracy across ambient shifts. |
Use Scenario: Closed-loop temperature regulation in ceramic kilns where Type E sensors operate from ambient to +900°C with rapid ramp rates. IC Role / Device Role / Timing Role: Isolated analog interface converting thermocouple EMF into stable +1 V to +5 V control signal for PID controllers. Use Value: Delivers 3 Hz bandwidth sufficient for thermal inertia response, ±0.01% initial accuracy for setpoint fidelity, and hot-swap capability for maintenance without system shutdown. |
| Chemical Reactor Safety System | Power Generation Boiler Monitoring |
|
Use Scenario: Redundant temperature sensing in exothermic chemical reactors where sensor failure must trigger immediate shutdown. IC Role / Device Role / Timing Role: Fault-tolerant signal conditioner with upscale open-circuit indication and ±30 VDC input protection against wiring faults. Use Value: Provides predictable open-circuit detection via current-source-driven upscale output, eliminating undetected sensor break failures in safety-critical loops. |
Use Scenario: Distributed temperature monitoring across boiler tube banks in utility-scale steam generation, subject to vibration and electromagnetic interference. IC Role / Device Role / Timing Role: Isolated channel-level conditioner interfacing multiple Type E sensors to centralized DCS via shared 7B Series backplane. Use Value: Leverages 160 dB CMR @ 50/60 Hz and 60 dB normal-mode rejection to suppress grid-frequency noise in high-voltage plant environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar thermocouple signal conditioning applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADAM-4018-BE | 8-channel Ethernet-enabled module; 16-bit ADC; no internal CJC sensor-relies on external reference | Designed for distributed remote I/O over TCP/IP; not rack-mountable or hot-swappable in 19″ chassis | Choose when network connectivity and multi-channel consolidation outweigh need for backplane integration and true channel-to-channel isolation |
| OMEGA iDRN-TC | Single-channel DIN-rail mount; 24-bit resolution; CJC via internal sensor; 1500 Vrms isolation | Self-contained enclosure with built-in display and configuration buttons; no backplane dependency | Choose for standalone deployment in panel-mounted applications where 7B Series rack infrastructure is unavailable |
Compared with ADAM-4018-BE and OMEGA iDRN-TC, the 7B27-E-04-1 delivers deterministic 3 Hz bandwidth, guaranteed ±1.0°C CJC accuracy when used with 7B Series backplanes, and true mix-and-match hot-swap operation-making it optimal for legacy 19″ rack-based industrial control systems requiring modularity and field-serviceability.
Availability
7B27-E-04-1 is available at Aetrix Electronics and suitable for industrial process monitoring, furnace temperature control, chemical reactor safety systems, and power generation boiler monitoring requiring stable component supply, long-term lifecycle support, and seamless integration with 7B Series backplanes.
Supply support for 7B27-E-04-1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for industrial, automotive, and communications markets.
The 7B27-E-04-1 belongs to the 7B Series signal conditioning family, engineered for rugged industrial environments requiring isolation, noise immunity, and precise thermocouple linearization in process control and factory-floor automation.
FAQ
What thermocouple types does the 7B27-E-04-1 support?
The 7B27-E-04-1 is factory-configured exclusively for Type E thermocouples covering 0°C to +900°C. It does not support J, K, T, R, S, or B types-those require distinct model variants (e.g., 7B27-K-22-1). The internal linearization and cold junction compensation algorithms are calibrated specifically for Type E thermoelectric properties.
Does the 7B27-E-04-1 require an external cold junction sensor?
No-the 7B27-E-04-1 relies on the thermistor-based cold junction compensation (CJC) sensor embedded in the 7B Series backplane (e.g., AC1363), not an on-module sensor. Accurate CJC performance (±1.0°C max) is only guaranteed when installed in a compliant 7B backplane with functional channel-level CJC hardware.
Can the 7B27-E-04-1 output range be changed from +1 V to +5 V to 0 V to +10 V in the field?
No-the output range of the 7B27-E-04-1 is factory-configured and fixed. To obtain 0 V to +10 V output for Type E thermocouples, the correct part is 7B27-E-04-2. No jumper, DIP switch, or software configuration can alter the output range after manufacture.
What is the warm-up time required for the 7B27-E-04-1 to meet full specifications?
The 7B27-E-04-1 requires approximately 10 minutes of power-on time to stabilize thermal gradients and achieve full accuracy specifications, including ±0.01% Span initial accuracy and ±1.0°C cold junction compensation performance. This is documented in the Rev. 0 datasheet, Page 5.
Is the 7B27-E-04-1 compatible with non-Analog Devices 7B Series backplanes?
The 7B27-E-04-1 is mechanically and electrically designed for Analog Devices' 7B Series backplanes (e.g., AC1363) with standardized pinout, power delivery, and CJC interface. Compatibility with third-party backplanes is not validated or supported; use requires adherence to the official 7B mechanical and electrical interface specifications.
7B27-E-04-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- -
- Voltage - Supply:
- -
- Output Type:
- -
- Current - Supply:
- -
- Operating Temperature:
- -
- Mounting Type:
- -
7B27-E-04-1 FAQ
1.How can I place an order for 7B27-E-04-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7B27-E-04-1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 7B27-E-04-1 reliable?
The price and inventory of 7B27-E-04-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7B27-E-04-1 is usually 5 days.
3.What payment methods are accepted for 7B27-E-04-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7B27-E-04-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7B27-E-04-1?
7B27-E-04-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7B27-E-04-1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 7B27-E-04-1?
For technical support, including 7B27-E-04-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7B27-E-04-1 requirements.
6.How does Aetrix verify that 7B27-E-04-1 is sourced from the original manufacturer or authorized distributors?
All 7B27-E-04-1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 7B27-E-04-1 meets industry standards.
7.What is the process for return or replacement of 7B27-E-04-1?
All 7B27-E-04-1 units undergo pre-shipment inspection (PSI). If there is an issue with 7B27-E-04-1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 7B27-E-04-1 part is unused and in its original packaging.
Return procedure for 7B27-E-04-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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