Fieldpiece SRH3 In Duct Digital Diagnostic Psychrometer

Fieldpiece SRH3 In Duct Digital Diagnostic Psychrometer In a Blown Molded Case The next generation of Fieldpiece Digital Psychrometers! In-duct digital psychrometric readings in the palm of your hand!
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  • Item #: Fieldpiece SRH3
  • Manufacturer: Fieldpiece's
  • Manufacturer's Product Number: Fieldpiece SRH3
  • Condition: New
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Fieldpiece SRH3 In-Duct

Digital Diagnostic Psychrometer

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Fieldpiece SRH3 In Duct Digital Diagnostic Psychrometer In a Blown Molded Case The next generation of Fieldpiece  Digital Psychrometers! In-duct digital psychrometric readings in the palm of your hand!

 

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Fieldpiece SRH3

1.) Power on your SRH3 by holding the ON/OFF button for 1 second.

2.) Use the TSH/TEET/NORM button to select NORMAL mode.

3.) Press the RH/DP/WB button to cycle between relative humidity, dew point, and wet bulb temperatures.

4.) The air temperature will always be shown in the lower display and the relative humidity, dew point, or wet bulb measurement will be displayed in the upper display in real-time.

5.) Insert sensor probe into duct for in-duct measurements.

What makes it so awesome: (Features)

1. Temp (WB, DB, DP)

2. Relative Humidity (%RH)

3. 38” telescoping wand.

4. Thin 3/8” probe

5. APO

6. Dual Display

7. Calculations for TEET, TSH

8. Hands free use with boot clip to hold wand and magnetic hanger.

9. Max/Min/Hold

What’s this TEET I keep hearing about?

For given return plenum air conditions, TEET gives you an indication of the proper indoor airflow. If actual evaporator exit temperature is more than 3° F above or below the TEET, an airflow problem may exist.

 

 

TEET Procedure for SRH3

1.) Press the TSH/TEET/NORM button until TEET is displayed in the lower left of the LCD.

2.) Take a wet bulb measurement inside the return plenum. Drill or punch a 3/8" hole into the return plenum. Insert SRH3 probe into the plenum to take the wet bulb measurement. Press ENTER to lock in the reading.

3.) Take a dry bulb measurement at the same place the previous wet bulb measurement was taken. Press ENTER to lock in the reading.

4.) Press OUTPUT to calculate the target evaporator exit temperature. Compare this calculated target to the actual evaporator exit temperature.

5.) Take a dry bulb measurement inside the supply plenum to check the actual Evaporator Exit Temperature. Drill or punch a 3/8" hole into the supply plenum. Press TSH/TEET/NORM until NORM is displayed. Insert SRH3 probe into the plenum and read the temperature in the lower display.

6.) Seal any holes before leaving the jobsite.

Note: For both Target Superheat and Target Evaporator Exit Temperature modes, you can adjust any temperature measurement after calculations have been performed by pressing ENTER. This prompts you to re-take the measurements.


What about Target Superheat?

Superheat is the temperature rise above its boiling point of a refrigerant. It is important to have the proper superheat entering the compressor. Too high of a superheat and the refrigerant will boil off too early in the evaporator, reducing capacity and efficiency, as in, it never gets cold enough in here! Too low and liquid refrigerant could enter and possibly destroy the compressor. Matching target superheat (TSH) to the actual superheat is the best way to obtain proper refrigerant charge for a fixed restrictor system.

TSH Procedure for SRH3

1.) Press TSH/TEET/NORM button until TSH is displayed in the lower left of the LCD.

2.) Take a wet bulb measurement at the inlet of the evaporator. Generally right before the filter is a good location. Drill or punch a 3/8" hole into the return plenum for a measurement depth of up to 24 inches. Insert SRH3 probe into the plenum to take the wet bulb measurement. Press ENTER to lock in the reading.

3.) Take a dry bulb (air temperature) measurement going into the condenser. Press ENTER to lock in the reading.

4.) Press OUTPUT to calculate the target superheat. Compare the target superheat to the actual superheat of the system.

5.) Seal any holes before leaving the jobsite.

 

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