Description
The Bently Nevada 3300/36-02-11-02-00-00 is a rack-mount dual-channel temperature monitor card built exclusively for the legacy 3300 series machinery protection rack systems, designed to track bearing, stator, and winding temperatures on gas turbines, steam turbines, centrifugal compressors, and large generators.
Part Number Breakdown (3300/36-02-11-02-00-00)
- 3300 = Core product family (machinery monitoring rack platform)
- /36 = Module type: Dual Temperature Monitor (2 independent temperature input channels)
- -02 = Sensor input type: RTD PT100 3-wire
- -11 = Firmware revision + alarm logic variant
- -02 = Backplane bus interface standard for 3300 series chassis
- -00 = No optional isolated analog output expansion
- -00 = No hazardous area intrinsic safety certification base unit
Core Technical Specifications
| Parameter | Value |
|---|---|
| Full Part Number | 3300/36-02-11-02-00-00 |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Channel Count | 2 independent temperature measurement channels |
| Supported Sensor | PT100 3-wire RTD (per part suffix -02) |
| Measurement Range | −200 °C to +600 °C |
| Measurement Resolution | 0.1 °C per channel |
| Temperature Accuracy | ±0.5 °C at 0–200 °C operating range |
| Rack Power Input | +24 V DC rack backplane bus, 120 mA typical draw |
| Alarm Configuration | Per-channel Alert (Alarm 1) + Danger (Alarm 2) relay outputs |
| Relay Contact Rating | 5 A / 120 V AC non-latching fault contacts |
| Local Display | Front-panel 2-line LCD for live channel temperature readouts |
| Status Indicators | Per-channel green Run LED, yellow Alert LED, red Danger LED |
| Operating Temperature | 0 °C to 60 °C rack ambient |
| Storage Temperature | −40 °C to +85 °C |
| Physical Dimensions | 150 mm × 100 mm × 30 mm (single slot 3300 rack card) |
| Unit Weight | 0.8 kg |
| Certifications | CE, cULus; no Ex/intrinsic safety rating per suffix -00 |
| Platform Status | Discontinued OEM production (legacy spare part only) |
Functional Description
This dual-channel monitor conditions raw PT100 RTD resistance signals and converts them to calibrated temperature values for continuous machinery thermal protection. Each channel operates fully independent; a fault on Channel 1 does not interrupt Channel 2 measurement.
The front LCD displays live temperature values for both sensors without external HMI connection. Two tiered threshold alarms are configurable via front-panel pushbuttons: Alert for minor thermal drift and Danger for critical over-temperature conditions that trigger machine trip logic. Onboard fault detection identifies open-circuit, short-circuit, and out-of-range RTD wiring faults and activates dedicated fault LEDs.
Digital communication with the 3300 rack backplane transmits all temperature, alarm, and fault data to the rack’s display processor and system DCS via dedicated rack communication cards. The base variant (-00 suffix) excludes isolated 4–20 mA analog output signal generation; analog output requires alternate part number suffix.
Compatibility Matrix
- Valid Rack Chassis: Bently Nevada 3300 series 6-slot, 10-slot, and 14-slot machinery protection racks
- Backplane Restriction: Only compatible with original 3300 rack backplanes; cannot install in newer 3500 series monitor racks
- Sensor Compatibility: Restricted to 3-wire PT100 RTDs; thermocouple inputs require alternate 3300/36 part variants
- System Integration: Communicates with 3300 System Display, 3300/50 communication gateway, and 3300/40 vibration monitor cards
- Backward Compatibility: Works with all 3300 series firmware revisions v4.x through v7.x; no forward compatibility with 3500 hardware
Condition, Stock & Lead Time
- Available Unit Conditions: New Surplus (factory sealed unused OEM stock), Certified Refurbished (full bench calibration), Used Pull (limited coverage)
- Typical In-Stock Volume: 3–14 surplus units across global automation spare parts suppliers
- Bench Test Scope (Refurbished Units): Full PT100 calibration across −100 °C to 400 °C range, alarm threshold simulation, relay contact continuity check, LCD display validation, backplane bus communication test
- North American Domestic Lead Time: 2–4 business days ground shipping; 1 business day expedited air freight
- International Lead Time: 7–13 business days DHL/FedEx express
- Warranty Terms: 12-month replacement warranty for new surplus; 9-month warranty for certified refurbished units
Pricing Guidance
Global reseller indicative pricing ranges 2,750–3,900 USD per unit, with volume discounts for orders of 4+ modules.Price subject to surplus inventory availability and regional import tariffs; contact supplier for a firm quote including full calibration test documentation.
Industrial Application Notes
- 3-wire PT100 cabling runs exceeding 100 meters require shielded twisted-pair wiring to eliminate resistive measurement drift; unshielded cables produce temperature reading offsets up to 3 °C.
- The module does not support hot-swapping; full rack power shutdown is required for card removal or installation to avoid backplane bus corruption.
- Configure Danger alarm thresholds 10–15 °C below maximum rated component temperature to prevent unplanned turbine/compressor trips from transient thermal spikes.
- RTD wiring faults (open/short) trigger latched fault LEDs; manual reset via front panel pushbutton is required to clear fault status after wiring repair.
- For hazardous Class I Div 1/2 installations, select alternate 3300/36 part numbers with intrinsic safety suffix; this base -00 variant is only approved for non-hazardous general electrical rooms.
Frequently Asked Questions
Q: Can this module accept thermocouple inputs instead of PT100 RTDs?A: No. The -02 suffix locks input circuitry exclusively to 3-wire PT100; thermocouple measurement requires separate 3300/36 model variants.
Q: Does this unit provide isolated 4–20 mA analog outputs for DCS connection?A: This -00 suffix model has no onboard analog output circuitry. Analog signal transmission requires an alternate part number with output expansion or pairing with a separate 3300/50 communication gateway.
Q: Is the 3300 rack platform still supported by Bently Nevada OEM service?A: OEM production ceased in 2012; limited repair depot support ended in 2021. All replacement hardware must be sourced from third-party surplus and refurbishment vendors.
Q: Can multiple 3300/36 cards be installed in a single 3300 rack?A: Yes; the rack backplane supports up to 6 dual temperature monitor cards for multi-bearing/multi-winding thermal monitoring on large rotating equipment trains.
