| Input Signal: | 4-20 Ma |
|---|---|
| Customized: | OEM |
| Enclosure Rating: | IP66/IP67 |
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The Neles ND910 Series Smart Valve Positioner represents the pinnacle of valve control technology, combining ultra-precise positioning, intelligent diagnostics, and unmatched reliability for critical industrial applications. As part of Nelesindustry-leading flow control portfolio, this advanced electro-pneumatic positioner sets new standards in process optimization, energy efficiency, and predictive maintenance capabilities.
| Category | Parameter | Specification |
|---|---|---|
| General | Model Series | ND910 (Standard), ND910H (High Temp), ND910Ex (Explosion-proof) |
| Type | Smart electro-pneumatic digital positioner | |
| Electrical | Input Signal | 4-20 mA DC (2-wire) with HART 7/DE protocol |
| Power Consumption | 3.5-22 mA | |
| Communication | HART/DE, optional Fieldbus (FF/PA, PROFIBUS PA) | |
| Mechanical | Housing Material | Aluminum alloy with epoxy coating (Stainless steel optional) |
| Mounting Standard | IEC 60534-6, NAMUR RD/RI 20 | |
| Protection Rating | IP66/IP67 (NEMA 4X) | |
| Pneumatic | Supply Pressure Range | 1.4-10 bar (20-145 psi) |
| Air Consumption | 0.12 Nm³/h @ 6 bar supply (standard conditions) | |
| Output Pressure | 0-100% of supply pressure | |
| Performance | Positioning Accuracy | ±0.5% of span (IEC 60534-8-1 Class 1) |
| Repeatability | ±0.1% of span | |
| Response Time | <1 sec (90% stroke, typical) | |
| Environmental | Operating Temperature | -40°C to +85°C (Standard) -60°C to +120°C (High Temp version) |
| Vibration Resistance | 5g @ 10-150 Hz | |
| Shock Resistance | 50g @ 11ms | |
| Technical Features | Sensor Technology | Non-contact Hall-effect position sensing |
| Pilot Stage | Piezo-electric pilot valve | |
| Control Algorithm | Adaptive PID with stick-slip compensation | |
| Diagnostics | Self-diagnostics | • Valve signature analysis • Packing friction monitoring • Air leak detection |
| Valve Characterization | 10 pre-set + 5 user-defined characteristics | |
| Certifications | Hazardous Area | ATEX, IECEx, FM, (ND910Ex models) |
| Safety Integrity | SIL 2/3 compliant (IEC 61508) | |
| Reliability Data | MTBF (Process Industry) | >150,000 hours |
| Mean Time To Repair (MTTR) | <30 minutes (field serviceable) | |
| Service Interval | 60 months (normal conditions) | |
| Advanced Functions | Partial Stroke Testing (PST) | Integrated capability with configurable parameters |
| Adaptive Tuning | Automatic response optimization based on valve behavior | |
| Data Logging | Stores last 100 alarm events and 10 full valve signatures |
Display of company strength
KeRui (Weifang) Automation Equipment Co., Ltd. has maintained a cooperative relationship with Rosemount for 15 years, and our purchase quantity has reached 20,000 units.
We supplied the tuning fork level gauge to the Rosemount factory, and it has been well-received by the Beijing factory. We have cooperated with Yokowaga and maintained a cooperative relationship for 8 years, and our purchase quality has reached 7000 units.
The companies we have cooperated with:
1. Awarded "Outstanding Supplier by Yanchang Petroleum in 2008
2. In December 2012, our company was awarded the "Excellent Equipment Service Award" for the expansion project of units 6 and 7 of the Guangdong Guohua Yuedaishan Power Plant
3. Awarded "Outstanding Supplier by Yaxing Group in 2013
4.200 transmitters for Haihua Group's ethylene debottlenecking transformation project in 2015.
5. In 2018, we were rewarded as a National Nuclear Power Instrumentation Industry Measurement and Testing Alliance member.
6.160 transmitters and 20 electric actuators for the Shandong Laigang Yongfeng Steel expansion project in 2019
7. In 2022, Jinneng Chemical (Qingdao) Co., Led/ Jinneng 2x450,000 tons/ year high-performance polypropylene project (newly built), equipped with 460 transmitters from our company.
8. In 2022, Shandong Qinghe Chemical Technology Co., Ltd.'s hydrogen peroxide method epoxy propane device and supporting hydrogen peroxide device expansion project used 253 pressure transmitters.
9. In 2022, the Wanhua Chemical HTN project NPG installed 320 transmitters and 50 sets of valve positioners.
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