- Low steady state air consumption (less than 0.06 scfm at all supply pressures)
- Tight-closing function
- Set point range of 4 to 20mA and user define with at least 25% of entire stroke utilized.
- Continuous monitoring of zero point
- Output pressure limitation of various defined values.
- Two standard software programmable limit switches.
- Optional inductive limit switch to replace one of the software limit switches
- Programmable limitations of the reference variable and travel range
- 10 Define Characteristics plus one user defined (entered over operating software)
- Programmable performance characteristics (i.e. PID control coefficients)
- Aluminum or optional Stainless-Steel housing.
- Optional solenoid, analog transmitter, external sensor, leakage sensor, & binary input.
- Integrated diagnostics including device status and event messages, data logger, histograms (travel setpoint deviation, and cycle counter), drive signatures (steady & hysteresis), end position trending, static characteristic test, partial stroke test, and full stroke test.
- Up to SIL 3 capable device
Positioners
3730-6 - Electro-Pneumatic Positioner (HART)
Operation: Linear and Rotary (Independent of Fail-Safe Action or Moving Direction)
Travel/Rotation: Up to 300mm or 100o
Input: Single Multi-Turn Push Button
Display: Alphanumeric LCD with ability to rotate display 180o
Communications: HART and SAMSON TROVIS VIEW
Control: PD
Calibration & Tuning: Auto Calibration with Four Different Initialization Modes
The Type 3730-6 HART enabled electro-pneumatic positioner is an enhanced version of the Type 3730-3 with added pressure sensors that can work in general industrial applications. This positioner can work inherently with single-acting linear and rotary control valves as well as double-acting linear and rotary control valves with the addition of a reversing amplifier. The digital benefits of the Type 3730-6 provide self-calibration and automatic adaptions to the valve and actuator being controlled via 4 initialization methods. This digital positioner has preset parameters such that only values deviating from the standard need to be adjusted. With 50+ parameters and 30+ error codes, the majority of critical settings and information can be communicated. The HMI (human machine interface) of the single multi-turn push button and LC-display allow this communication of information to occur right at the unit. The potentiometer-based travel sensor of the Type 3730-6 is not susceptible to wear often found in gear-based travel sensors. The travel range of the Type 3730-6 can be restricted up to 1/5 maximum stroke as well as operated in split range.
