Dwyer 670 : Fume Hood Monitor
The Model 670 Fume Hood Monitor is a compact and reliable solution for ensuring the proper operation of laboratory fume hoods. By continuously sensing face velocity air flow, it provides precise monitoring to maintain safe ventilation and compliance with safety standards.
Key Features:
- Real-Time Airflow Monitoring: Built-in airflow sensor provides accurate detection of low air velocity with ±10% precision.
- User-Friendly Display: LED indicators for safe (green) and alarm (red) conditions, along with an audible alarm for immediate notification.
- Night Set-Back Mode: Reduces operational noise during off-hours by muting alarms.
- Flexible Installation Options: Semi-flush, flush, or surface mounting using the included bracket and accessories.
- Sash High Alarm Input: Alerts users when the sash is raised above the maximum safe working height.
Highlights:
- Alarm Range: 30–400 FPM (0.15–2.0 m/s).
- Power Requirements: 15 VDC, 500 mA (120 VAC power adapter included).
- Operating Temperature: 55–86°F (13–30°C).
- Relay Outputs: Configurable for low air flow alarms and night set-back functionality.
- Port Connectivity: RS232 for integration with a LAN network or laptop.
Applications:
The Model 670 is ideal for laboratories, research facilities, and industrial environments that require precise and reliable fume hood monitoring to ensure user safety and compliance with regulatory standards.
Package Includes:
- 670 Alarm Unit
- Mounting Bracket and Screws
- 24" Tubing for Hood Connection
- 120 VAC Power Adapter
Specifications
| Service: | Fume hood face velocity air flow |
| Alarm Range: | 30-400 FPM (0.15-2.0 m/s) |
| Alarm Indication: | Red LED and audible alarm |
| Low Air Velocity Alarm Delay: | Fixed 5 s |
| Visual LED Display: | Red: Alarm; Green: Normal |
| Horn Silence: | Yes-temporary and permanent |
| Accuracy: | Face velocity ±10% |
| Temperature Limits: | Operating temperature: 55 to 86°F (13 to 30°C); Storage temperature: -40 to 150°F (-40 to 65°C) |
| Power Requirement: | 15 VDC 500 mA; 120 VAC, 60 Hz power transformer included |
| Relay Output Low Air Flow Alarm: | 5 A @ 250 VAC |
| Relay Input For Night Setback: | 2-wire rated for 24 VDC usage |
| Sash High Indication: | Using a 2-wire micro switch or 3-wire proximity switch input, rated for 24 VDC usage |
| Mounting: | Semi flush, flush or surface mounted when using included bracket |
| Weight: | 5.0 oz (141 g) |
Datasheets
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Dwyer Model 670 | Fume Hood Monitor Datasheet |
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Dwyer Model 670 | Fume Hood Monitor Specifications - Installation and Operating Instructions |
