Siemens 6ES7331-7TF01-0AB0 SM 331 Analog Input Module
Siemens 6ES7331-7TF01-0AB0 SM 331 Analog Input Module
Manufacturer: Siemens
Product No.: 6ES7331-7TF01-0AB0
Condition:1000 in stock
Product Type: SM 331 Analog Input Module
Product Origin: Germany
Payment: T/T, Western Union
Weight: 1000g
Shipping port: Xiamen
Warranty: 12 months
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Quick Procurement Facts
- Part Number: 6ES7331-7TF01-0AB0
- Description: 8 AI Thermocouple, 16-bit + Sign, Integrated Cold-Junction, SIL 3 / Cat 8 / PL e, High-Precision Safety TC Module
- Condition: Factory New Sealed in Original Siemens Packaging
- Warranty: 24 months (with full safety & CJC calibration certificate)
- Dispatch: 24-hour global shipping from EU/US stock
- Channels: 8 fully isolated thermocouple inputs (J, K, T, E, N, R, S, B, L, U, TXK/TXK(L)) with internal high-accuracy cold-junction compensation
Why 6ES7331-7TF01-0AB0 Is the Benchmark for Safety-Critical Temperature in 2025
- Direct SIL 3 thermocouple measurement – no external isolators or safety barriers required
- ±0.5 °C system accuracy after calibration, internal CJC with <0.3 °C drift over full range
- Full sensor-break, short-circuit, under/over-range, and drift diagnostics
- Still the #1 choice for gas turbine exhaust, furnace flame safety, reactor temperature protection, and hydrogen processes
Typical Failure Symptoms Driving Immediate Orders
- OB35 safety alarm: “Thermocouple break channel 4” or “CJC compensation out of tolerance”
- F-CPU STOP due to discrepancy time exceeded on redundant TC pairs
- Passivation of entire group after years of high-temperature exposure
- TÜV/Functional Safety audit: “Missing diagnostics on burner safety temperature loop”
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Siemens SIMATIC S7-300 Safety |
| Order Number | 6ES7331-7TF01-0AB0 |
| Channels | 8 isolated thermocouple inputs |
| Supported Types | J, K, T, E, N, R, S, B, L, U, TXK/TXK(L) |
| Resolution | 16 bit + sign |
| Safety Integrity | SIL 3 (IEC 61508), Cat 4, PL e |
| System Accuracy | ±0.5 °C typical (after calibration) |
| Cold-Junction | Internal high-precision CJC (±0.3 °C) |
| Diagnostics | Wire-break, short, drift, over/under range |
| Conversion Time | 120 ms all channels |
| Isolation | 500 V DC channel-to-channel & to backplane |
| Power Loss | 5.5 W typical |
| Front Connector | 40-pin (6ES7392-1AM00-0AA0 required) |
| Dimensions (W×H×D) | 40 × 125 × 120 mm |
| Weight | 0.35 kg |
| Operating Temp | 0 to +60 °C |
Compatibility & Alternatives
- Direct successor to: 6ES7331-7TF00-0AB0 (adds TXK(L) & improved CJC)
- S7-1500 F equivalent: 6ES7531-7TF00-0AB0
- Cross: Emerson DeltaV SIS TC cards, Yokogawa AST143 + safety isolators
Product Description
Quick Procurement Facts
- Part Number: 6ES7331-7TF01-0AB0
- Description: 8 AI Thermocouple, 16-bit + Sign, Integrated Cold-Junction, SIL 3 / Cat 8 / PL e, High-Precision Safety TC Module
- Condition: Factory New Sealed in Original Siemens Packaging
- Warranty: 24 months (with full safety & CJC calibration certificate)
- Dispatch: 24-hour global shipping from EU/US stock
- Channels: 8 fully isolated thermocouple inputs (J, K, T, E, N, R, S, B, L, U, TXK/TXK(L)) with internal high-accuracy cold-junction compensation
Why 6ES7331-7TF01-0AB0 Is the Benchmark for Safety-Critical Temperature in 2025
- Direct SIL 3 thermocouple measurement – no external isolators or safety barriers required
- ±0.5 °C system accuracy after calibration, internal CJC with <0.3 °C drift over full range
- Full sensor-break, short-circuit, under/over-range, and drift diagnostics
- Still the #1 choice for gas turbine exhaust, furnace flame safety, reactor temperature protection, and hydrogen processes
Typical Failure Symptoms Driving Immediate Orders
- OB35 safety alarm: “Thermocouple break channel 4” or “CJC compensation out of tolerance”
- F-CPU STOP due to discrepancy time exceeded on redundant TC pairs
- Passivation of entire group after years of high-temperature exposure
- TÜV/Functional Safety audit: “Missing diagnostics on burner safety temperature loop”
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Siemens SIMATIC S7-300 Safety |
| Order Number | 6ES7331-7TF01-0AB0 |
| Channels | 8 isolated thermocouple inputs |
| Supported Types | J, K, T, E, N, R, S, B, L, U, TXK/TXK(L) |
| Resolution | 16 bit + sign |
| Safety Integrity | SIL 3 (IEC 61508), Cat 4, PL e |
| System Accuracy | ±0.5 °C typical (after calibration) |
| Cold-Junction | Internal high-precision CJC (±0.3 °C) |
| Diagnostics | Wire-break, short, drift, over/under range |
| Conversion Time | 120 ms all channels |
| Isolation | 500 V DC channel-to-channel & to backplane |
| Power Loss | 5.5 W typical |
| Front Connector | 40-pin (6ES7392-1AM00-0AA0 required) |
| Dimensions (W×H×D) | 40 × 125 × 120 mm |
| Weight | 0.35 kg |
| Operating Temp | 0 to +60 °C |
Compatibility & Alternatives
- Direct successor to: 6ES7331-7TF00-0AB0 (adds TXK(L) & improved CJC)
- S7-1500 F equivalent: 6ES7531-7TF00-0AB0
- Cross: Emerson DeltaV SIS TC cards, Yokogawa AST143 + safety isolators