Any of the TEL air flow monitors for fume hoods can be factory configured to monitor exhaust from a bio-safety cabinet. This is achieved with the 12150, a duct-mounted velocity probe.

The preferred monitor for this application is the AFA 500 BSC (pictured). However, the 12150 probe can be connected to a TEL AFA 1000/1 or AFA 1000/2 if desired.

Downloads:

NSF statement on bio-safety cabinet regulations.

CETA statement on NSF 49 standard.

AFA 500 BSC Product Specifications

Alarm range: 0-2000 fpm.

Accuracy: Velocity accuracy +/- 5%.

Airflow sensor: 12150 velocity probe.

Calibration: Single or 2-point (installer selectable).

Alarm point: 20 percent less than normal airflow.

Low air alarm delay: Fixed 5 seconds.

Relay output: 1 (low air alarm).

Analog output: Not available.

Relay input: 2 (night setback and visor open).

Communications Port: RS232 (can be connected via Serial interface to LAN network).

Visor open indication: Yes, using a micro switch or proximity switch input with repeat alarm feature factory set to 5 minutes (can be adjusted via computer up to 30 minutes).

Night setback: Yes, using a relay input.

External alarm indication: Not available.

Power Requirement Input: 120VAC, 60Hz.

Output: 15VDC, 500ma.

Display: Visual LEDs (red, alarm; green, normal).

Alarm indication: Red LED and audible alarm.

Horn silence: Yes, temporary.

Mounting: Semi-flush.

Operating temperature: 55 to 86°F (13 to 30°C).

Storage temperature: -40 to 150°F (-40 to 65°C).

Dimensions: Instrument Case: 5.71” H x 3.46” W x 1.38” D (148mm H x 88mm W x 35mm D).

Agency listings: CE.

HSE is the exclusive North American distributor for products manufactured by TEL, Temperature Electronics Ltd. TEL makes air flow monitors for fume hoods and bio-safety cabinets, VAV fume hood control products (including room pressure controls and fresh air bleed controls) and room pressure monitors. Contact HSE at 847-680-9930.

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