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SRH3 Fieldpiece – Psychrometer Telescoping Wand

Fieldpiece SRH3 – Psychrometer Telescoping Wand
SKU: 84515
Manufacturer part number: SRH3

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SRH3 – Psychrometer Telescoping Wand
Get your superheat on.

In-duct target superheat & target evaporator exit temp
Wet bulb, temps, dew point, and %RH
Hands free testing
38″ telescoping probe
Quickly takes readings from the center of the duct

The SRH3 In-duct Psychrometer is a great tool to properly charge fixed restrictor systems by quickly determining the target superheat, and to help determine optimum airflow across the evaporator with a target evaporator exit temperature test.  To assist HVACR professionals get the proper measurements, Fieldpiece engineered this in-duct psychrometer to take measurements in the duct where they are supposed to be taken — near the evaporator!

The 38″ telescoping probe’s laser etched ruling and flattened edges allows techs to locate proper measurement points within a duct, and ensures that the probe is properly aligned. With the quick sensor it’s a snap to determine target superheat, and take target evaporator exit temperature tests.Designed specifically for HVACR professionals, the SRH3 In-Duct Diagnostic Psychrometer is a great tool to properly charge fixed restrictor systems.  More than 70% of A/C units are improperly charged, and therefore running inefficiently, but with the SRH3 it’s easier to ensure units are running at their maximum efficiency.

Measures temperature and %RH
Calculates wet bulb and dew point
Slim 38″ telescoping probe
Fast response time
Depth and direction indicators
Hands-free testing with stabilizing cone and magnetic hanger
Calculates target superheat and target evaporator exit temperature
Like all Fieldpiece products, the SRH3 digital psychrometer was engineering specifically for HVACR professionals.  It contains the specific measurements and tests techs need, without any they don’t.  Because it automatically calculates target superheat and target evaporator exit temperature, PT charts and written math are a thing of the past.  Plus the dual display with bright backlight, and rugged rubber boot with probe clips make sure the SRH3 is ready for any job.


In-Duct Digital Psychrometer – SRH3
Stabilizing Cone
Blow-molded Case with Padding


Operating temperature: 0 to 122°F (-18 to 50°C) at <75%RH
Storage Temperature: -4 to 140°F (-20 to 60°C) 0 to 80%RH with battery removed.
Low battery indication: The is displayed when the battery drops below the operating level.
Battery Life: Approx. 150 hours (9V alkaline)
Auto Power Off: After 15 minutes of non-usage.
Temperature: K-Type Thermocouple
Range: -58 to 1832°F (-50 to 1000°C)
Accuracy: ±1°F 50 to 113°F (±0.5°C 10 to 45°C), when calibrated to NTC at room temperature
±(0.1% rdg+2°F) -58 to 1832°F
±(0.1% rdg+1°C) -50 to 1000°C
Temperature: NTC
Range: 32 to 140°F (0 to 60°C)
±1°F 50 to 113°F (±0.5°C 10 to 45°C)
±4°F 32 to 50°F and 113 to 140°F
±2°C 0 to 10°C and 45 to 60°C
Relative Humidity: 0% to 100% RH range
Accuracy: ±2.5% at 77°F (25°C), 10% to 90%RH ±5% at 77°F (25°C) 0 to 10% RH & 90 to 100%RH
Dimensions: 7.9”(20cm) x 2.6”(6.6cm) x 1.4”(3.6cm)
Weight: Approx. 11oz with battery installed

Products specifications
Attribute nameAttribute value
ManufacturerFieldpiece Instruments