Design Function Integration Junction Boxes in Electrical Signal Systems
Price:
Negotiation
MOQ:
1 set
Delivery Time:
10-30days
Brand:
Mettler Toledo
Product Description
Design Function Integration Junction Boxes in Electrical Signal Systems
Key Features
- Discrete resistors provide high accuracy and long-term connection stability
- Hazardous area approvals: ATEX, FM, cFM
- Capacity range: 1,000 lb to 75,000 lb (SLD425/SLD525 load cells)
- Rugged 316 stainless steel and FDA-certified stainless steel construction
- Optional materials: polyamide (Nylon), carbon steel (zinc plated), or stainless steel
- IP66/IP67 protection rating (standard)
- Multiple conduit openings with NPT or PG threads
- 4, 6, 8, or 10 input channels (typical)
- Screw clamp (standard) or solder tab terminals
- Dedicated shield terminal for earth ground
Product Overview
Mettler Toledo junction boxes enable quick and safe integration of multiple analog load cells into weighing systems. Our precision junction boxes are designed for hazardous areas with ATEX and IECEx certification, as well as food and pharmaceutical applications meeting EHEDG design rules with GMP and NSF certification.
Critical Performance Considerations
As an analog component where voltage changes as small as 0.1 µV can be significant, junction box design directly impacts scale accuracy. Mettler Toledo's precision junction boxes are engineered to resist temperature fluctuations, maintain long-term stability, and correct corner-load errors while reducing installation time and improving maintenance ergonomics.
Durable Construction
Our junction boxes feature IP67 or IP69K stainless-steel enclosures with high-accuracy electrical components. Available in 304 (1.4301) or 316 (1.4401) stainless steel housing materials for maximum durability.
Advanced Technology
Unlike junction boxes using trim-pots, our models employ precision discrete resistors that provide superior immunity to temperature and humidity effects. Rotary switches select arrays of precision resistors for easy corner error correction, combining the accuracy of discrete resistors with user-friendly operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | 316 stainless steel and FDA-certified stainless steel |
| Optional Materials | Polyamide (Nylon), carbon steel (zinc plated), or stainless steel |
| Capacity Range | 1,000 lb to 75,000 lb (SLD425/SLD525 load cells) |
| Hazardous Approvals | ATEX, FM, cFM |
| Protection Rating | IP66 / IP67 (Standard) |
| Conduit Openings | Multiple (4x, 6x) with NPT or PG threads |
| Input Channels | 4, 6, 8, 10 (Typical) |
| Excitation Voltage (Vex) | Matched to load cell system (Typically 5-15 VDC) |
| Input/Output Resistance | Matched to system impedance |
| Cable Length Compensation | Yes, via potentiometers for each channel |
Frequently Asked Questions
What is a load cell junction box?
A load cell junction box is an enclosure designed specifically for use with load cells, which measure weight or force. It connects multiple load cells together to create an accurate weighing system.
How do load cell junction boxes affect scale performance?
Junction boxes are critical for scales using multiple analog load cells, affecting accuracy through temperature sensitivity, long-term stability, and corner-load adjustment. Mettler Toledo junction boxes provide exceptional stability and easy installation features.
How can a junction box affect scale accuracy?
Our junction boxes combine discrete resistors for high accuracy and long-term stability with rotary switches that provide simple user interfaces similar to trim pots, but without their sensitivity issues.
What materials are used in junction box construction?
Our junction boxes are made of rugged 316 stainless steel and FDA-certified stainless steel, with optional materials including polyamide (Nylon), carbon steel (zinc plated), or stainless steel to meet various budget requirements.
How does a load cell summing box work?
Load cell junction boxes (sometimes called summing boxes) connect multiple load cells to a single signal read by the indicator. Despite the name "summing box," these devices actually average the signals from multiple load cells in a weighing system.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
SMARTWEIGH INSTRUMENT CO.,LTD
Location
No 89 Zhujiang Road, Xinbei district, Changzhou City, Jiangsu, China.
Contact Person
Shirley