Already a subscriber?
MADCAD.com Free Trial
Sign up for a 3 day free trial to explore the MADCAD.com interface, PLUS access the
2009 International Building Code to see how it all works.
If you like to setup a quick demo, let us know at support@madcad.com
or +1 800.798.9296 and we will be happy to schedule a webinar for you.
Security check
Please login to your personal account to use this feature.
Please login to your authorized staff account to use this feature.
Are you sure you want to empty the cart?
ANSI/ASHRAE Standard 173 Method of Test to Determine the Performance of Halocarbon Refrigerant Leak Detectors, 2012
- ANSI/ASHRAE Standard 173-2012
[Go to Page]
- FOREWORD
- 1. PURPOSE
- 2. SCOPE
- 3. DEFINITIONS
- 4. APPARATUS [Go to Page]
- 4.1 Calibrated Leak Standard. The calibrated leak standard can be either adjustable or fixed flow rate. Testing will require calibrated leak flow rates of 1±0.15 g/yr, 50±7.5 g/ yr, and any number of calibrated leaks with flow rates between the nom...
- 4.2 Test Stand. The test stand will have a mobile platform to which the leak detector can be attached. The test stand will have a means for moving this platform laterally ±200 mm at a controlled, constant speed over at least ±180 mm of the travel (...
- 5. AMBIENT CONDITIONS
- 6. TEST PROCEDURES [Go to Page]
- 6.1 Test Number 1—Sensitivity Threshold when the Leak Detector is Stationary. The stationary test involves a series of 10 repeat trials, starting with the 1 g/yr leak, followed by another series of 10 repeat trials with an increase in the leak rate...
- 6.2 Test Number 2—Sensitivity Threshold When the Leak Detector is Moving. The moving test involves a series of repeat trials, starting with the 1 g/yr calibrated leak, followed by another series of repeat trials with an increase in the leak rate (i...
- 6.3 Test Number 3—Recovery Time Test. When a leak detector is exposed to a large leak, the sensor can become saturated by the refrigerant. After removing the leak detector from the leak site, the signal will return to zero after a period of time. T...
- 6.4 Test Number 4—Sensitivity Threshold after Exposure to a Large Leak. When a leak detector is exposed to a large leak, the sensor can lose sensitivity after the recovery time even though the indication might lead the operator to believe otherwise...
- 6.5 Test Number 5—Sensitivity Threshold in an Elevated Background. When a leak detector is being used in the vicinity of a large leak, it can lose sensitivity due to the elevated background. This test will determine if the leak detector sensitivity...
- Figure 1 Calibrated leak outlet with shroud and detector probe.
- Figure 2 Test apparatus, top view.
- Figure 3 Test apparatus, side view.
- Figure 4 Test apparatus configured for Test Number 4.
- Figure 5 Test apparatus configured for Test Number 5, top view.
- Figure 6 Test apparatus configured for Test Number 5, side view.
- 7. PRESENTATION OF TEST RESULTS
- INFORMATIVE ANNEX: TEST REPORT FORMS—DETERMINATION OF THE PERFORMANCE OFHALOCARBON REFRIGERANT LEAK DETECTORSIN ACCORDANCE WITH ASHRAE STANDARDPROJECT COMMITTEE 173 [Go to Page]