化学工程
ToolFusion / Chlorine Analyzer / Engineering Tools

Project Tool: Chlorine Analyzer Loop Checking and Signal Verification

Specification & Integration Verification

F6 Composition for Chlorine Analyzer Loop Checking and Signal Verification

● Not Golden Verified ● Project Trust Verified Runnable: 5 / 5 steps
VERIFIED SCOPE
○ Calculate transmitter output error as % of current span CALCULATION Runnable
○ Verify output error complies with ±0.5% of span accuracy specification PASS / FAIL capable Runnable
○ Compute scaled engineering unit value from raw ADC count CALCULATION Runnable
○ Verify computed display value matches expected stimulus within ±0.1 mg/L PASS / FAIL capable Runnable
○ Assess insulation resistance compliance using IEEE 43 minimum threshold PASS / FAIL capable Runnable
⚠ This tool does not currently verify Linear_4_to_20_mA_to_Engineering_Units_Conversion, Percent_of_Span_Error_Check.
PROJECT INPUTS

Runnable deterministic steps: 5 / 5. Enter the project conditions used by this verification workflow. Prefilled values (24/24 inputs) are demonstration inputs, not recommended design values.

01Step 1: Calculate transmitter output error as % of current spanFormula
%
mA
mA
mA
mA
mA
%
mA
Quantify deviation between expected ideal 4–20 mA output and actual measured output for each stimulus point.
02Step 2: Verify output error complies with ±0.5% of span accuracy ...Validation Rule
%
% of span
Confirm functional compliance of transmitter analog output against contractual and safety-critical performance requir...
03Step 3: Compute scaled engineering unit value from raw ADC countFormula
count
count
count
mg/L
mg/L
mg/L
count
count
count
mg/L
Translate digital I/O hardware reading into meaningful process variable using configured linear scaling.
04Step 4: Verify computed display value matches expected stimulus w...Validation Rule
mg/L
mg/L
Ensure end-to-end digital signal fidelity meets water quality monitoring accuracy requirements for regulatory complia...
05Step 5: Assess insulation resistance compliance using IEEE 43 min...Validation Rule
MΩ
V
Prevent leakage currents, ground loops, and measurement drift due to degraded cable insulation in humid/wet conditions.
Deterministic calculation · Results become stale when engineering inputs change.
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ENGINEERING EVIDENCE

Golden Coverage0 / 5
Project Trust11 / 11 PASS
RuntimeDeterministic
Components0 small tools, 5 steps

SCOPE & LIMITATIONS

NOT CURRENTLY VERIFIED
○ Linear_4_to_20_mA_to_Engineering_Units_Conversion
○ Percent_of_Span_Error_Check
These capabilities are outside the current verified workflow.

HOW THIS VERIFICATION WORKS

  1. Step 1: Calculate transmitter output error as % of current span — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  2. Step 2: Verify output error complies with ±0.5% of span accuracy specification — compares engineering inputs against deterministic thresholds and produces a PASS or FAIL decision.
  3. Step 3: Compute scaled engineering unit value from raw ADC count — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  4. Step 4: Verify computed display value matches expected stimulus within ±0.1 mg/L — compares engineering inputs against deterministic thresholds and produces a PASS or FAIL decision.
  5. Step 5: Assess insulation resistance compliance using IEEE 43 minimum threshold — compares engineering inputs against deterministic thresholds and produces a PASS or FAIL decision.

This tool coordinates 3 validation steps and 2 calculation steps. The overall engineering decision uses ALL_REQUIRED_VALIDATION_PASS aggregation: only validation steps contribute to the pass/fail outcome; calculation steps produce data only.

METHODS & EQUATIONS

All formulas are resolved from canonical runtime definitions and executed deterministically by the client-side engine.

Step 1: Calculate transmitter output error as % of current span

Formulaabs(I_meas-(I_lrv+(S_appl/100)*(I_urv-I_lrv)))/(I_urv-I_lrv)*100

Step 2: Verify output error complies with ±0.5% of span accuracy specification

Validation Rule
output_error_percent_of_span <= 0.5 [engineering_standard:ISA-RP18.2-2019 Section 5.3.2]

Step 3: Compute scaled engineering unit value from raw ADC count

FormulaEU_lrv+((C_raw-C_min)/(C_max-C_min))*(EU_urv-EU_lrv)

Step 4: Verify computed display value matches expected stimulus within ±0.1 mg/L

Validation Rule
display_accuracy_compliance >= 1 [customer_requirement:EPA_111.1_Section_4.2 Ensure end-to-end digital signal fidelity meets water quality monitoring accuracy requirements for regulatory compliance]

Step 5: Assess insulation resistance compliance using IEEE 43 minimum threshold

Validation Rule
V_op <= 50 [engineering_standard:IEEE_43-2013_Table_1_and_ISA-RP18.2_Annex_B]; R_ins >= 1 [engineering_standard:IEEE_43-2013_Table_1_and_ISA-RP18.2_Annex_B]; V_op <= 1000 [engineering_standard:IEEE_43-2013_Table_1_and_ISA-RP18.2_Annex_B]; R_ins >= 1 [engineering_standard:IEEE_43-2013_Table_1_and_ISA-RP18.2_Annex_B]

UNDERSTANDING THE RESULTS

PASS
A proven validation criterion passed. The engineering input satisfies the deterministic threshold.
FAIL
A proven validation criterion failed. The engineering input does not satisfy the deterministic threshold.
CALCULATED
A deterministic calculation completed, but no acceptance criterion exists for this step. CALCULATED does NOT mean PASS.
RESULT NOT VALID
Runtime executed but engineering validity requirements were not met.
INCOMPLETE
Required inputs or workflow steps are incomplete.

The overall decision reflects only validation steps. Calculation steps produce numerical results without pass/fail claims.

WHEN TO USE THIS TOOL

  • When deterministic Chlorine Analyzer engineering verification is needed for project-specific conditions.
  • For calculation of Calculate transmitter output error as % of current span (Step 1).
  • For validation of Verify output error complies with ±0.5% of span accuracy specification (Step 2).
  • For calculation of Compute scaled engineering unit value from raw ADC count (Step 3).
  • For validation of Verify computed display value matches expected stimulus within ±0.1 mg/L (Step 4).
  • For validation of Assess insulation resistance compliance using IEEE 43 minimum threshold (Step 5).
  • For deterministic pre-checks before formal engineering review or submission.

When NOT to use this tool: This tool does not replace laboratory testing, formal engineering analysis by a licensed professional, or code-compliance certification. It performs deterministic threshold comparison and calculation only.

ENGINEERING FAQ

What does this verification tool check?

This tool performs 5 deterministic engineering steps: (1) Calculate transmitter output error as % of current span, (2) Verify output error complies with ±0.5% of span accuracy specification, (3) Compute scaled engineering unit value from raw ADC count, (4) Verify computed display value matches expected stimulus within ±0.1 mg/L, (5) Assess insulation resistance compliance using IEEE 43 minimum threshold.

What does a PASS result mean?

A PASS result means the validation step's deterministic threshold comparison was satisfied. It does not constitute laboratory certification or code compliance.

What does a CALCULATED result mean?

A CALCULATED result means the deterministic calculation completed, but no acceptance criterion is applied to this step. CALCULATED does NOT mean PASS.

What is not currently verified by this workflow?

Capabilities not currently verified include: Linear_4_to_20_mA_to_Engineering_Units_Conversion, Percent_of_Span_Error_Check.

How many steps are golden verified?

0 out of 5 steps have been verified with deterministic golden test cases.

COMPONENT TOOLS

This workflow currently contains no bound executable Small Tools. Steps are defined by engineering methods and reference materials.

CalculationWorkflow StepTransmitter output signal accuracy verification at 0%, 50%, and 100% input stimulus
ValidationWorkflow StepTransmitter output signal accuracy verification at 0%, 50%, and 100% input stimulus
CalculationWorkflow StepDCS display value scaling validation from raw I/O counts to engineering units (mg/L Cl₂)
ValidationWorkflow StepDCS display value scaling validation from raw I/O counts to engineering units (mg/L Cl₂)
ValidationWorkflow StepWiring insulation resistance adequacy assessment per voltage rating and environment