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3500/42 176449-02+128229-01 Bently Nevada

Name: 3500/42 176449-02+128229-01 Bently Nevada
Brand: BENTLY NEVADA
SKU: 1773
Availability: InStock

$422.00

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Description

Bently Nevada 3500/42M Module Validation Procedure‌

‌Part No.:‌ 176449-02 | ‌Firmware:‌ v4.10+ | ‌Compliance:‌ API 670 5th Ed.

‌Pre-Test Requirements‌

‌Safety Preparation‌
- Verify chassis ground resistance ≤ 2 Ω (ANSI/IEEE C62.41)
- Disconnect field wiring at TB3/TB4 terminals
- Use ESD wrist strap (1 MΩ series resistance)
‌Test Equipment‌
- Calibrated DC source (Fluke 724/ProcessLINK compatible)
- Precision shunt resistor: 250 Ω ±0.1% (for current loop simulation)
- DIN rail power supply: 18-30V DC (ripple < 100mVpp)

‌Module Power-Up Verification‌

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1. Apply 24V DC to PWR+/PWR- terminals (TB1)



2. Confirm indicators:

• PWR LED: Solid green

• FAIL LED: Off

• CHK CONFIG LED: Amber (should extinguish after 45s)



3. Measure backplane voltage:

• TP1-GND = -17.5V DC ±0.25V

• TP2-GND = -24V DC ±0.5V

‌Channel Functional Testing‌

‌Step 1: Proximitor Simulation‌

‌Channel‌	‌Test Point‌	‌Simulated Input‌	‌Expected Reading‌	‌Tolerance‌
Ch A	J1-1 to J1-2	-18V DC	3500 SW: -17.8V	±0.15V
Ch B	J2-1 to J2-2	-22V DC	3500 SW: -21.7V	±0.15V

‌Step 2: Current Loop Verification‌

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1. Connect 250Ω shunt between Ch A OUT+ and OUT-

2. Apply -20V DC to Ch A IN+

3. Measure voltage across shunt:

• Normal operation: 1.00V DC = 4mA

• Alarm condition: 5.00V DC = 20mA (simulate gap voltage < -2V)

‌Diagnostic Fault Injection‌

‌Controlled Failure Modes:‌

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[Test 1: Power Supply Fault]

- Reduce input voltage to 16.5V DC → FAIL LED flashes (1 Hz)

[Test 2: Sensor Open Circuit]
– Disconnect Ch B input →
• CHK CONFIG LED solid amber
• 3500 SW displays “SENSOR OPEN”

[Test 3: Over-temperature]
– Apply 150% load for 15min →
• Module auto-derates at 85°C
• Analog output clamped at 21.5mA

‌Post-Test Actions‌

‌Performance Validation‌
- Dynamic response test: 0.5-12 kHz sine sweep (settling time < 3ms)
- Crosstalk rejection: ≤ -80 dB @ 10 kHz (per API 670 Sect. 4.9.3)
‌Configuration Restore‌

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[3500 Rack Config] Module_Type = 42M Firmware_Ver = 4.10 Cal_Date = YYYY-MM-DD Damping_Filter = ON ; 2-pole Bessel

‌Critical Warnings‌

TEST PROHIBITIONS‌

Never exceed -30V DC input (irreversible Zener diode damage)
Do not hot-swap modules without rack isolator (PN 3500/15-01-01-00)
Avoid grounding OUT- terminals (causes current loop offset)

‌SAFETY INTERLOCKS‌

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REQUIRED: Install transient suppressor (P/N 146449-01) when:

• Cable runs > 15m

• Location NEC Class I Div 2