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3300 XL Rotary Position Transducer (RPT)

This innovative transducer incorporates a proximity probe observing an eccentric cam. The changing gap between probe tip and cam corresponds to degrees of rotation, and is specifically designed for valve position measurements. It is a superior alternative to older potentiometer transducers which have poor reliability.

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Specifications

Unless otherwise noted, the following specifications are for a 3300 XL Rotary Position Transducer (RPT) between +18°C and +27°C (+64°F to +80°F), with a - 24 Vdc power supply and a 10 k @ load.

Electrical

Power Requires -17.5 Vdc to -26 Vdc without barriers at 12 mA maximum consumption.
Supply Sensitivity Less than 2 mV change in output voltage per volt change in input voltage
Output resistance 50 Ω

Table 1. Probe dc resistance (nominal) (RPROBE):

Probe LengthResistance from the Center Conductor to the Outer Conductor (RPROBE) (ohms)
1.0 7.59 + 0.05
5.0 8.73 + 0.70
9.0 9.87 + 0.90

Table 2. Extension cable dc resistance (nominal):

Length of Extension CableResistance from Center Conductor to Center Conductor (RCORE) (°hms)Resistance from Outer Conductor to Outer Conductor (RJACKET)(°hms)
4.0 0.88 + 0.13 0.26 + 0.05
8.0 1.76 + 0.26 0.53 + 0.11

Extension cable capacitance 69.9 pF/m (21.3 pF/ft) typical
Field wiring 0.2 to 1.5 mm2 (16 to 24 AWG) [0.25 to 0.75 mm2 (18 to 23 AWG) with ferrules]. Recommend using three-conductor shielded triad cable. Maximum length of 305 metres (1,000 feet) between the 3300 XL Proximitor® Sensor and the monitor

Average Scale Factor

100° Ramp 140 + 8 mV/degrees of shaft rotation
200° Ramp 70 ± 4 mV/degrees of shaft rotation
300° Ramp 50 ± 3 mV/degrees of shaft rotation
System performance over extended temperatures With the Rotary Position Transducer casing and 1 metre of probe cable between the temperature range of -35°C to +120°C (-3TF to +248°F) with the Proximitor® Sensor and extension cable between 0°C to +45°C (+32°F to +113°F), the system output remains within the following specifications
100° Ramp Typical system not more than 0.6%
200 ° Ramp Typical system not more than 0.8%
300 ° Ramp Typical system not more than 1.5%
Electrical Classification Complies with the European CE mark

Mechanical Materials

Probe Tip Polyphenylene sulfide (PPS)
Probe Case AISI 304 stainless steel (SST)
Probe Cable and Extension Cable 75 Ω triaxial, fluoroethylene propylene (FEP) insulated cable
Housing Cast aluminum
Bearings Sintered bronze MIL-B-5687A Type, vacuum-impregnated MILL- 6085
Ramp 4140 steel
Shaft 303 stainless steel
Retaining clips PH15-7 MO stainless steel
Probe mounting adapter 303 stainless steel
Conduit Fitting 2024-T4or 2024-T351 aluminum
Bearing cover 6061-T6 aluminum
Mounting plate 6061-T6 aluminum
Proximitor Sensor A308 aluminum
Connectors Gold-plated brass
Tensile Strength (maximum rated) 330 N (75 Ibf) from transducer case to cable. 270 N (60 Ibf) at probe lead to extension cable connectors
Minimum Cable Bend Radius 25.4 mm (1.0 in)
Total System Weight (typical) 1.8 kg (4.0 Ibm)
Rotary position sensor 1.4 kg (3 Ibm)
Extension cable 37 g/m (0.4oz/ft)
Proximitor Sensor 246 g (8.7 oz)

Environmental Limit

Rotary position sensor and extension cable operating temperature range -51° C to+177° C (-60° F to+351° F)
Proximitor Sensor operating temperature range -35°Cto+85°C(-31°F to +185°F)
Relative Humidity 100% condensing, nonsubmersible when connectors are protected

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Descriptions English
3300 XL RPT Datasheet acrobat-reader
ORBIT 3300 XL RPT acrobat-reader


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