The 3000 series optical detector calibration tunnels are designed for calibrating optical smoke detectors and smoke alarms in production. They are based on the 1000 series tunnels with an additional 1m long calibration section fitted. The tunnels can be maintained at a constant aerosol concentration for calibration, and are controlled by an optical scatter smoke sensor. The main section of the 3000 series tunnels is the same as the 1000 series, so can still be used for R&D and batch sensitivity testing as required.

The opening for calibrating detectors is a top hinged metal door with a gas strut to support it when open. There is an electrically controlled lock unit which will unlock the door when removing and replacing detectors. It will also detect closure and activate the lock when the operator shuts the door.

Up to 3 detector mounting plates can be fitted in the tunnel for calibrating detectors. The detector plates can each accommodate up to 8 off 100mm diameter detectors without significant blocking of airflow. The 16 way connectors can provide power and signalling to the detectors on the mounting plates. There are no wires provided to the connectors as standard, as the electrical requirements for calibrating detectors vary greatly.

In addition a serial communications interface to the tunnel PC is specified. This will enable a separate PC to control the overall function of the tunnels and the test cycle of the detectors under calibration.

• Integrated control electronics
• Ideally suited for calibration to EN54-7, EN54-29 and EN14604.
• Also used for calibration to UL standards.
• Can be used for QA testing to EN54-5
• Easy to assembly before use.
• Comprehensive technical support
• Enables manufacturers to comply with AVCP standards
• Optional training available

3000 Series

 

The following variants are available in the 3000 series:


3100 optical smoke detector calibration test tunnel: This is an extended version of the 1100 smoke only test tunnel, which includes a scatter sensor and calibration mounting plates (specified with order).

3400 Optical Smoke Detector Calibration Test Tunnel with Heat QA Test Capability: This is to the same design as the 3100 tunnel, but also includes heaters and thermal insulation to enable QA testing of heat detectors at up to 20Kmin-1 from 25oC.

3800 Optical Smoke Detector Calibration Test Tunnel with Heat QA Test Capability and cooling: This is to the same design as the 1900 tunnel, but also includes heaters and thermal insulation to enable QA testing of heat detectors at up to 20Kmin-1 from 25oC. Cooling is included to increase the rate of heat detector testing.

The following additional options are available:

3000 Spare hatch with fixed mounting plate for up to 6 detectors (for 3100 test tunnel).
3001 Spare hatch with fixed mounting plate for up to 6 detectors (for 3400-3800 tunnels).
3002 Hatch with rotating detector mount for directional dependence testing, or for tests at a selected orientation (for 3100 test tunnel).
3003 Hatch with rotating detector mount for directional dependence testing, or for tests at a selected orientation (for 3400-3800 tunnels).
3004 Spare rotating detector mount (for use with 3002 or 3003).
3006 Airspeed meter (‘anemometer’) with analogue output integrated into the software.
3007 Interface and mount for MIC (standard reference for ionisation detectors).
3009 Dazzle test rig (non EN54-7 version for R&D application only).
3010 Hatch and motorised rotating detector mount with software control (for 3100 test tunnel).
3011 Hatch and motorised rotating detector mount with software control (for 3400-3800

The overall mechanical parameters are as follows

Overall size of tunnel: 3.10m long * 0.70m wide * 0.93m high.
Internal cross section of duct (3100): 450mm wide by 290mm high.
Internal cross section of duct (3400-3800): 420mm wide by 260mm high.
Extract via 150mm diameter flexible duct (requires a back draught shutter on exit).

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