Overview
The ABB RN40 is a panel-mounted analog indicator designed to display 4-20mA process signals across a 0-1 INCH/S range. Originally manufactured by Weed Instrument (model 7000RN1U), these instruments provide straightforward, reliable signal indication for flow, speed, pressure, and other process variables in industrial automation systems. This listing includes a lot of 4 units in new condition, suitable for replacement, retrofit, or inventory stocking.
Key Features
- 4-20mA Input Range: Standard industrial signal compatibility for seamless integration with transmitters and controllers
- 0-1 INCH/S Display Scale: Calibrated for velocity or speed measurements in compact display format
- Panel Mount Design: Front-of-panel installation with standard mounting hardware for quick integration
- Analog Needle Display: Mechanical gauge movement provides reliable, glance-readable indication without power dependencies
- New in Box Condition: All 4 units factory sealed, unused, and ready for immediate deployment
Technical Specifications
- Signal Input: 4-20mA
- Display Range: 0-1 INCH/S (linear scale)
- Mounting Style: Panel Mount (flush front)
- Housing Material: Industrial-grade polymer/metal case
- Display Type: Analog needle gauge
- Operating Environment: Industrial control panels, machinery enclosures
- Condition: New in Original Box
- Quantity: Lot of 4 Units
- Certifications: Industrial standard compliance
Typical Applications
- Flow rate monitoring in pump and pipeline systems
- Speed indication on rotating machinery and conveyors
- Retrofit replacement for legacy Weed Instrument gauges
- Process variable indication in control cabinets
- Test and commissioning equipment for industrial systems
- OEM replacement stock for equipment manufacturers
Compatibility & Replacements
The ABB RN40 is compatible with any system or transmitter outputting a standard 4-20mA signal. As the original Weed Instrument 7000RN1U designation indicates, this gauge is a direct replacement or upgrade path for legacy automation equipment. The lot of 4 units allows for full system panel replacement or spare inventory. No calibration or configuration is required—simply wire the 4-20mA signal to the instrument terminals and mount in any standard DIN panel cutout. These instruments are passive indicators requiring no external power supply beyond the 4-20mA loop itself, making them ideal for reliability-critical or intrinsically safe applications.
