ArlynGuard S Intrinsically Safe Ultra Precision Scales - 5Kg (0.05g) - 450Kg (5g)
Overview
The ArlynGuard S series offers intrinsically safe industrial scales engineered for Class I, II, and III Division 1, Division 2, and Zone 0 hazardous environments—delivering the highest precision in its class. Powered by proprietary Surface Acoustic Wave (SAW) technology, the ArlynGuard S achieves 10x the accuracy of standard strain gauge scales while remaining far more cost-effective than electromagnetic force motor alternatives. Featuring an all-in-one, FM-approved system with the MKE-5-IS indicator included, rugged stainless steel construction, and extensive connectivity options—including MODBUS, EtherNet/IP, Wi-Fi, and cloud-based monitoring—the ArlynGuard S is the ideal solution for critical applications like chemical formulation, pharmaceutical production, and specialty manufacturing. View Configurations See more product details| Product Code | Capacity & Resolution | Platform Size | Price |
|---|---|---|---|
| S10 | 10 lb x .0001 lb (4.5 kg x .05 g) | 12" x 12" (Optional 12" x 16") | $2549 |
| S25 | 25 lb x .0002 lb (12 kg x .1 g) | 12" x 12" (Optional 12" x 16") | $2549 |
| S50 | 50 lb x .0005 lb (22 kg x .2 g) | 12" x 12" (Optional 12" x 16") | $2549 |
| S100 | 100 lb x .001 lb (45 kg x .5 g) | 12" x 12" (Optional 12" x 16") | $2549 |
| S200 | 200 lb x .002 lb (90 kg x 1 g) | 12" x 12" (Optional 12" x 16") | $2849 |
| S200-L | 200 lb x .002 lb (90 kg x 1 g) | 20" x 23" | $3499 |
| S300-L | 300 lb x .002 lb (135 kg x 1g) | 20" x 23" | $3799 |
| S500-L | 500 lb x .005 lb (225 kg x 2 g) | 20" x 23" | $4099 |
| S500-XL | 500 lb x .005 lb (225 kg x 2 g) | 31.5" x 31.5" | $4999 |
| S1000-XL | 1000 lb x .01 lb (450 kg x 5 g) | 31.5" x 31.5" | $5399 |
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Details
Intrinsically Safe by Design
The ArlynGuard S series is purpose-built for hazardous environments—fully approved for Class I, II, and III Division 1 Groups A through G and Zone 0 conditions, along with a wide range of other safety classifications (see Certifications below). From volatile gases and solvent vapors to combustible dusts, the ArlynGuard S delivers safe, compliant performance in the most demanding settings, including chemical plants, pharmaceutical facilities, refineries, and more.
Engineered for Rugged Precision
At the heart of the ArlynGuard S is our proprietary Surface Acoustic Wave (SAW) technology, delivering 10x the accuracy of traditional strain gauge scales while maintaining exceptional durability. With no moving parts to wear out, stainless steel platforms, and rugged aluminum or full stainless steel frames (depending on capacity), the ArlynGuard S is designed to perform in extreme environments with minimal maintenance.
Precision Without Compromise
Achieving up to 0.01% of full-scale accuracy and resolutions as fine as 0.001 lb, the ArlynGuard S rivals the performance of far more expensive electromagnetic force motor systems—at a fraction of the cost. Available in capacities ranging from 10 lb to 2000 lb, it offers a single, unified solution for applications requiring both laboratory-grade precision and industrial-strength performance.
Flexible Power Options
Choose between:
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Rechargeable Battery Operation – Includes dual NiMH battery sets and safe-area charging for continuous uptime
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Optional AC Powered System – Provides uninterrupted, intrinsically safe power for 24/7 operations via a Zener barrier
Both options are engineered for safety and seamless integration in hazardous environments.
Smart Connectivity & Control (Safe or Hazardous Areas)
When your process demands more than standalone weighing, the ArlynGuard S integrates effortlessly into modern data-driven workflows. Available connectivity includes:
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RS-422 / RS-485 & Setpoint Control for local process automation directly within hazardous zones
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Ethernet, Wi-Fi, MODBUS RTU/TCP, EtherNet/IP, and PROFINET via safe-area configurations
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USB data logging, Google Sheets integration, cloud monitoring, alarms, and remote access features
Available Upgrades
The ArlynGuard S series is highly modular. Below are upgrade options available for different configurations, depending on whether components are located in a hazardous or safe area. Most advanced features require a Safe Area Display or Zener Barrier. Contact us to help configure the ideal system.Power Options
| Upgrade | Configuration |
| AC Powered System (with Intrinsically Safe Zener Barrier) | #2 |
Displays & Indicators
| Upgrade | Configuration |
| Additional Safe Area Display | #3 |
| Arlyn UpScale Touchscreen Indicator | #3, #4 |
| Full Featured MKE-5 Digital Indicator | #3, #4 |
| No Display Option (with analog output only) | #5 |
Connectivity & Communication
Hazardous Area Outputs (with MKE-5-IS Display)
Safe Area Outputs (requires Safe Area Display or Barrier)
| Upgrade | Configuration |
| Analog Output (4-20mA or 0-5VDC) | #2, #3, #4 |
| RS-232 Serial Port | #2, #3, #4 |
| USB Communication | #2, #3, #4 |
| Ethernet TCP/IP | #2, #3, #4 |
| Wi-Fi TCP/IP (w/ UpScale) | #3, #4 |
Industrial Protocols (requires UpScale Display in Safe Area)
Printing & Barcode
| Upgrade | Configuration |
| Label / Card / Paper Printer (RS-232) | #2, #3, #4 |
| Bluetooth / USB Thermal Printer (58mm, UpScale) | #3, #4 |
| Barcode Scanning & Printing (UpScale) | #3, #4 |
Control & Setpoints
| Upgrade | Configuration |
| Setpoints for Filling / Relays | #1, #2, #3, #4 |
| Alerts (Buzzer Alarm) | #3, #4 |
| Light Tower (2- or 3-light) | #2, #3, #4 |
Counting & Data Collection
| Upgrade | Configuration |
| Parts Counting | #1, #2, #3, #4 |
| USB Data Logging (No PC Required) | #2, #3, #4 |
| AxChange Cloud Monitoring (UpScale only) | #3, #4 |
| Google Sheets Integration (UpScale only) | #3, #4 |
| Remote Indicator Software (PC) | #2, #3, #4 |
| Time & Date Output (MKE-5 only) | #3, #4 |
Advanced Features (Safe Area Display Only)
| Upgrade | Configuration |
| Flow Rate Function + Alarms (UpScale) | #3, #4 |
| NEMA Stainless Steel Enclosure | #3, #4 |
| Remote Buttons (ZERO, TARE, PRINT, CYCLE) | #2, #3, #4 |
Need Help Configuring?
Not sure what you need? Let us walk you through your setup. We'll help determine the best configuration based on your hazardous zone classification, power requirements, and data needs.Specifications
The following specifications apply to all standard ArlynGuard S models unless otherwise noted. For specific resolution and capacity details, refer to the “Capacities & Platform Sizes” section.
Performance
- Accuracy: ±0.01% of full scale
- Internal Resolution: Up to 1 part in 2 million
- Display Speed: Adjustable from 0.1 to 0.5 seconds
- Zero / Tare Range: 100% of full scale
- Safe Overload Protection: 250% of rated capacity
Platform & Construction
- Platform Sizes: 12" x 12", 12" x 16", 20" x 23", and 31.5" x 31.5"
- Frame Materials:
- Aluminum frame with stainless steel pan (12" and 16" models)
- Stainless steel frame and pan (20" and 31.5" models)
- Load Cell Design: SAW (Surface Acoustic Wave), no moving parts
- IP Rating: Not washdown-rated; contact us for sealed enclosure options
Power Supply
- Battery Power (Standard):
- (3) NiMH AA rechargeable batteries
- Spare set and charger included
- Typical operation: up to 32 hours
- Batteries must be recharged in a safe area
- AC Powered System (Optional):
- Requires Zener Barrier (Configuration #2)
- Ideal for continuous use or fixed installations
Display & Interface
- Included Display: MKE-5-IS Intrinsically Safe Digital Display
- Display Type: 128x64 graphical LCD
- Mounting: Stainless steel swivel bracket
- Functions: Auto tare, keyboard tare, net/gross toggle, unit conversion (lb, kg, oz, troy, etc.)
- Memory: 100+ stored tares
Integration & Connectivity (with Safe Area Display or Barrier)
- USB, RS-232, RS-485, Analog (4–20mA / 0–5VDC)
- Ethernet TCP/IP, Wi-Fi (UpScale only)
- MODBUS RTU/ASCII, MODBUS TCP, EtherNet/IP, PROFINET
- Google Sheets integration, USB data logging, and AxChange cloud monitoring
Safety & Compliance
- FM Approved:
- Class I, II, III Division 1, Groups A–G
- Class I, Zone 0 AEx ia IIC (T3 Ta=60°C)
- Division 2 approval for nonincendive operation
- Approved Components:
- Digital Indicator: Model MKE-5-IS-a (b)
- SAW Load Cells: Intrinsically Safe certified models
Frequently Asked Questions
What makes the ArlynGuard S different from other intrinsically safe scales?
The ArlynGuard S uses Surface Acoustic Wave (SAW) technology, which delivers 10x greater accuracy than traditional strain gauge scales while maintaining rugged durability. Unlike most competitors, the system includes the FM-approved MKE-5-IS indicator as standard, so you get a complete, certified weighing solution without hidden costs or complicated component matching.
What certifications does the ArlynGuard S carry?
The ArlynGuard S is fully FM-approved for the most demanding hazardous locations:
- Class I, II, III, Division 1 — Groups A through G (including volatile gases like acetylene and conductive dusts)
- Class I, Zone 0, AEx ia IIC T3 — the highest intrinsic safety designation
- Division 2 Nonincendive Approval — for environments where hazardous materials are present under abnormal conditions
How accurate is the ArlynGuard S compared to other industrial scales?
The ArlynGuard S achieves 0.01% of full-scale accuracy and resolutions up to 1:100,000. For example, on a 100 lb capacity model, it can measure changes as small as 0.001 lb. That’s 20x more sensitive than a typical strain gauge scale and rivals the precision of much more expensive electromagnetic force motor systems—without the high price tag.
What capacities are available?
The ArlynGuard S series covers a broad capacity range from 10 lb to 2000 lb, all using the same SAW technology and MKE-5-IS indicator. This allows facilities to standardize on one platform for both small-batch formulations and heavy-duty industrial weighing, simplifying training, maintenance, and spare parts management.
Is the digital indicator included, or do I need to purchase it separately?
The MKE-5-IS Intrinsically Safe Digital Weight Indicator is included by default with every ArlynGuard S system. Competitors often sell indicators, power supplies, and safety barriers separately, which can create hidden costs and complex setup requirements. With ArlynGuard S, you get transparent, upfront pricing for a fully functional system.
Can I control valves, pumps, or batching operations directly in hazardous zones?
Yes. The ArlynGuard S supports optional RS-422/RS-485 communication and Setpoint Control directly on the MKE-5-IS indicator, enabling local process automation inside hazardous areas. You can control valves, relays, and batching sequences without expensive long runs of intrinsically safe wiring back to a remote PLC, reducing system complexity and cost.
How do I integrate the ArlynGuard S into my existing control system or cloud environment?
The ArlynGuard S offers extensive connectivity options:
- Safe-area connections via Ethernet, Wi-Fi, MODBUS RTU/TCP, EtherNet/IP, PROFINET, RS-232, USB, and analog outputs
- Cloud monitoring and Google Sheets integration for data logging
- Local setpoint control for automated batching and dosing
What power options are available?
Two intrinsically safe power configurations are available:
- Standard Rechargeable Batteries — Includes dual NiMH battery sets and a safe-area charger, providing up to 32 hours of continuous use per set
- Optional AC Powered System — Uses a Zener barrier to deliver uninterrupted power directly from a safe-area outlet, ideal for 24/7 operations
How durable is the ArlynGuard S in industrial environments?
Built for harsh conditions, the ArlynGuard S features:
- SAW-based load cells with no moving parts for minimal wear
- Stainless steel platforms and rugged aluminum or full stainless steel frames
- 250% safe overload protection — a 100 lb capacity scale can withstand up to 250 lbs without damaging the load cells
Can I manage multiple hazardous area weighing applications with one system?
Yes. Because the ArlynGuard S offers a wide capacity range and a unified indicator interface, facilities can standardize across multiple weighing applications—from laboratory-scale precision to pallet-level industrial loads—without juggling different technologies or workflows.
How does the ArlynGuard S compare to METTLER TOLEDO, Rice Lake, or Sartorius?
METTLER TOLEDO: Premium but expensive; ArlynGuard S offers comparable precision at a fraction of the cost.
Rice Lake: Modular but complex; ArlynGuard S includes everything you need out of the box.
Sartorius: Extreme precision but limited capacities; ArlynGuard S balances accuracy, price, and versatility, making it suitable for a wider range of industrial applications.
Rice Lake: Modular but complex; ArlynGuard S includes everything you need out of the box.
Sartorius: Extreme precision but limited capacities; ArlynGuard S balances accuracy, price, and versatility, making it suitable for a wider range of industrial applications.
Where is the ArlynGuard S manufactured?
The ArlynGuard S series is designed and manufactured in the USA, ensuring strict quality control, faster support, and a reliable supply chain for replacement parts and future upgrades.
