Description
Celesco PT801-0005-611-1212 | 5-Inch Cable-Extension Position Transducer
Dynamic Product Introduction
Measuring tight linear movement on hydraulic rams, structural actuators, and automated die-stamping presses requires position feedback hardware that tolerates structural flex without mechanical binding. Rigid linear rods frequently jam when mounting brackets deflect under load. The Celesco PT801-0005-611-1212 avoids physical alignment issues by using a stainless steel aircraft cable coiled around a constant-tension spool, delivering accurate linear tracking across a 5-inch measuring stroke.
Built within an IP67 powder-coated aluminum chassis, the PT801-0005-611-1212 uses a high-precision hybrid plastic potentiometer to deliver smooth voltage divider signals across its entire displacement range. The internal spring mechanism maintains uniform cable tension during rapid extension and retraction cycles, eliminating slack and backlash. This specific hardware variant features a heavy-duty MS-style bayonet connector layout (-1212 option build), allowing quick cable disconnections during maintenance cycles—though maintaining long-term accuracy depends on keeping the measuring wire aligned with the exit guide.
PT801-0005-611-1212
Key Technical Specifications
- Manufacturer & Series: Celesco / TE Connectivity PT8000 Series
- Full Measuring Range: 0 to 5 inches (0 to 125 mm)
- Output Signal Type: Voltage Divider (Potentiometric) / Hybrid plastic potentiometer
- Accuracy / Linearity: \pm 0.1\% full scale repeatability
- Enclosure Rating: NEMA 4 / IP67 powder-coated aluminum housing
- Measuring Cable Material: Stainless steel aircraft cable
- Maximum Cable Acceleration: Up to 10g continuous spring-tension tracking
- Electrical Termination: 4-pin MS3102E-14S-6P connector assembly
- Operating Temperature Range: -40^\circC to +100^\circC (-40^\circF to +212^\circF)
- Potentiometer Life: Minimum 2,000,000 full stroke cycles
- Weight: Approximately 1.4 kg (3.0 lbs)
Global Sourcing & Live-Test SOP (Transparency Core)
Procuring secondary-market linear position transducers requires thorough bench qualification before units enter active plant production or testing cells. Every Celesco PT801-0005-611-1212 passing through inventory undergoes a strict quality control workflow:
- Inbound Verification: Serial numbers and ordering codes on the aluminum chassis tag are checked against OEM build sheets. We inspect housing seals, check the 4-pin MS connector pins for corrosion, and inspect the stainless steel cable for fraying or kinks.
- Live Simulation: The PT801-0005-611-1212 is mounted onto a precision linear displacement test stand. A regulated 10 VDC excitation source is applied across the outer potentiometer pins using a matching MS mating plug.
- Diagnostics: The cable is extended in 0.5-inch increments up to the full 5-inch stroke limit. Voltage output is monitored on a Fluke 87V multimeter to confirm linear scaling remains strictly within the \pm 0.1\% linearity window.
- Dynamic Return Test: Fast release-retraction checks test internal spring return speed to confirm zero cable slack and verify smooth internal drum tracking across the entire stroke.
- Final Prep: Connector pins are cleaned with contact cleaner, the cable eyelet is fitted with a protective sleeve, and the PT801-0005-611-1212 is sealed in ESD-safe protective packaging.
The Field Engineer’s Pitfall Guide
❗ Exceeding the 5^\circ Cable Exit Angle Limit: Never route the measuring cable of the PT801-0005-611-1212 at an angle greater than 5^\circ from the centerline of the cable exit orifice. Running the stainless wire off-axis forces it to rub against the internal exit bushing, wearing down the metal strands and introducing friction that destroys measurement repeatability.
❗ Uncontrolled Cable Snap-Back (Free-Wheeling): Never pull the measuring cable out and release the eyelet, allowing it to snap back unassisted into the housing. Free-wheeling causes the spring spool to over-speed, destroying the internal recoil spring and snapping the wiper arm off the precision hybrid potentiometer.
❗ Applying Direct Current Without Voltage Buffering: Connecting the PT801-0005-611-1212 directly to a high-current DC power source without current-limiting protection will ruin the unit. The internal potentiometric wiper is designed strictly as a high-impedance voltage divider; drawing excess current through the wiper brush will quickly burn through the hybrid conductive plastic element.
Intent-Driven FAQ
Q: What is the main functional difference between part numbers PT801-0005-611-1111 and PT801-0005-611-1212? The primary difference lies in the electrical termination interface options designated by the final digits. While both feature a 5-inch measuring range and potentiometric output, the -1212 variant utilizes a 4-pin MS-style industrial connector socket (MS3102E-14S-6P), whereas the -1111 variant typically specifies an integrated terminal box or alternative cable gland interface.
Q: Can I connect the PT801-0005-611-1212 directly to a standard PLC analog input card? Yes. Since the PT801-0005-611-1212 functions as a passive voltage divider (potentiometer), you can apply a regulated 5 VDC or 10 VDC excitation voltage across the supply pins and route the variable wiper signal into a voltage-capable analog input channel (0–5V or 0–10V).
Q: Is the MS connector on the PT801-0005-611-1212 weather-resistant for outdoor environments? Yes. When mated with a sealed MS3106E-14S-6S mating plug, the connector assembly maintains the sensor’s overall NEMA 4 / IP67 ingress rating, protecting internal electronics against dust, heavy rain, and splash water.
Q: What is the benefit of choosing the PT801 potentiometric series over 4-20mA current loop models? The raw potentiometric output of the PT801 series provides extremely low signal noise, zero propagation delay, and minimal power consumption. It is ideal for high-speed ratiometric DAQ systems where external signal conditioning is handled at the controller cabinet.
Q: How can I verify if a field-installed PT801-0005-611-1212 has an internal wiper track fault? Disconnect the MS connector plug. Connect an ohmmeter between the wiper pin and one excitation terminal. Slowly draw the cable out by hand—if the resistance display jumps erratically or shows an open circuit at any point along the 5-inch stroke, the internal wiper or conductive plastic track has worn out.
