Crowcon
Crowcon BESafe Fixed Dual-Gas Detector
- SKU:
- CROWCON-BESAFE
- Availability:
- Usually ships in 3 business days
Description
The Crowcon BESafe is a dual-channel fixed gas detector built for battery energy storage systems (BESS) and battery backup installations. It monitors two gases at once — hydrogen, carbon monoxide and methane, the gases released during battery thermal runaway — from a single compact transmitter, giving operators early warning in time to act before an event escalates.
Pre-calibrated smart sensor trays swap in seconds without manufacturer intervention, and the sensors can sit remotely on cables, per configuration, to reach hard-to-access points inside cabinets and enclosures where space is limited. A high-definition OLED display shows both channels together, backed by an 85 dB sounder, multi-colour LED indicators and relay outputs that can trigger external alarms or ventilation. The configurations listed here are the CE build (code C1), pairing hydrogen with methane or carbon monoxide exactly as each configuration states.
How to read the configuration code: BESB codes name the two sensor bays — A11 = methane 0-100% LEL, A21 = hydrogen 0-100% LEL, A22 = hydrogen 0-25% LEL, A33 = carbon monoxide 0-200 ppm, A34 = carbon monoxide 0-500 ppm — then C1 = CE build, and the trailing block is the remote-sensor cable option (ZZZZ = none, 02 = 2 m on Bay 1, 01/01 = 1 m on both bays). Every configuration in the dropdown also spells out both gases, ranges and cables in full.
Common Applications:
Battery Energy Storage (BESS) • UPS & Battery Backup Rooms • Renewables • Data Centers • Warehousing
Need help selecting the right configuration? Call CPS Calibrations at (865) 900-8844 — every configuration on this page is a factory Crowcon build, and we calibrate what we sell.
- Dual-channel detection — two gases monitored simultaneously from one transmitter, reducing detector count and installation footprint
- Built for battery energy storage: detects the hydrogen, carbon monoxide and methane released during thermal runaway, enabling a fast safety response
- Pre-calibrated swappable smart sensor trays — swap in seconds without manufacturer intervention, reducing downtime and servicing cost
- Remote smart sensors simplify installation and maintenance in hard-to-reach areas and space-constrained cabinets (cable options per configuration)
- High-definition OLED display shows both channels with simple button controls for setup and adjustment
- Built-in alarms: 85 dB sounder plus power (green), fault (yellow) and alarm (red) LED indicators; relay output can trigger external alarms or ventilation fans
- Multiple signal outputs: 2x 4-20mA analogue plus RS-485 Modbus RTU for remote monitoring and integration with existing control systems
- Sensor life indicator monitors service life and signals end-of-life status; remote non-intrusive testing verifies performance without interrupting operations
- Compact IP65 polycarbonate enclosure (175 x 150 x 55 mm) fits limited spaces such as energy storage cabinets
| Gases & Ranges (listed configurations) | Methane + Hydrogen: 0–100% LEL + 0–25% LEL; Hydrogen + Methane: 0–100% LEL + 0–100% LEL; Hydrogen + Carbon monoxide: 0–100% LEL + 0–200 ppm, 0–100% LEL + 0–500 ppm |
| Size | 175 x 150 x 55 mm (transmitter) |
| Weight | Base: 550 g; Adapter: 169 g; Sensor tray: 65 g each |
| Enclosure material | Polycarbonate |
| Ingress protection | IP65 |
| Cable entry | M20 |
| Power | 10 to 30 V DC, 24 V DC nominal; 150 mA (3.6 W @ 24 V dc), 5 W max |
| Display | 128x64 OLED, both channels shown simultaneously |
| Electrical output | 2x 4-20mA; RS-485 Modbus RTU |
| Relay output | SPDT relay (1A at 24 V DC) — Alarm 1, Alarm 2, Fault |
| Audio visual output | Sounder: 85 dB @ 3 m; LED: Power (green), Fault (yellow), Alarm (red) |
| Operating temperature | CE builds: -20 to +60 °C (sensor dependent — see datasheet gas table) |
| Operating humidity | 0 to 99% RH (non-condensing) |
| Data logging | 3,000 data logs |
| Sensor technologies | Catalytic (hydrogen, methane); Electrochemical (carbon monoxide) — per configuration |
| Approvals | CE builds listed here (code C1): EN 61010-1, EN 50270. The datasheet also lists UL 2075 marked 'contact Crowcon for availability' — the configurations on this page are CE builds, not UL builds |
| Warranty | 2 years on transmitter and sensors |
Product Documents & Resources
- BESafe Datasheet (PDF)
Document files are being added to this page. Need one now? Email info@cpscalibrations.com and we'll send it straight over.