Installation & Operations
Blü-Test Wireless Test Instruments
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:[email protected] • Web:www.bapihvac.com
rev. 08/16/21
41521_BluTest_G2_ins
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• Room Sensor measurement is done by holding the Blü-Test probe directly under the sensor enclosure for 3 minutes
or until the reading stabilizes. Body heat or breathing on the sensor is a major source of faulty readings, so holding
the Blü-Test probe at the button end and standing away from the sensor is the best way to ensure a good
measurement. The Probe Clip Hanger accessory (BA/PCH-1) simplifies this by holding the probe for you (Fig. 31).
• Duct sensor measurement is done by drilling a 5/8” (15mm) hole in the duct near the duct sensor to be tested. Insert
the Blü-Test probe in the hole so the tip is as close as possible to the duct sensor under test. Hold the Blü-Test
probe in place for 2 minutes or until the reading stabilizes. When finished, remove the probe and cover the test hole
with duct tape.
• Duct averaging sensor verification is more difficult. Use the probe clip hanger to clip the probe directly to the
averaging sensor at 10 or more locations along its length. Leave the probe in place for 2 minutes or until the reading
stabilizes.
• Outside air sensor measurement requires that the Blü-Test probe be placed next to the outside air sensor. This may
require a ladder or extension pole. Hold the Blü-Test probe in place for 3 minutes or until the reading stabilizes. The
Probe Clip Hanger makes this easier by holding the probe for you (Fig. 32).
• Walk-in freezer/cooler measurements require that the probe be placed in or around the product racks and not near
the door. Do not let the probe tip touch the rack. The probe will require more time to stabilize due to the larger
differential between room temperature and freezer/cooler temperature. Keep the probe in place for 15 to 20 minutes
or until the reading stabilizes. The Probe Clip Hanger makes this easier by holding the probe for you (Fig. 33).
• Immersion dry thermowell measurement can be done as long as the thermowell diameter is big enough. Remove the
immersion sensor to be tested and place the Blü-Test Probe into the thermowell. Hold the probe in place for 2
minutes or until the reading stabilizes.
• The piercing temperature probe is designed to be used with “Pete’s plugs”. It is also designed to be used when
piercing a medium is needed such as in insulation or soil.
Sect. 9: Best Measurement Practices
Fig. 31:
Probe Clip
Hanger used on a
room sensor
Fig. 32:
Probe Clip
Hanger used on an
outside air sensor
Fig. 33:
Probe Clip
Hanger used on a
wire shelf
