When you go in to the customers house turn on The A/C take WB (wet bulb) reading at the return air grill then go outside and take a dry bulb measurement at condensing unit or heat pump use your measurements with your refrigerant gauges. And calculate your subcooling or superheat depending on weather you have a TXV or not, I just enter the values in to my SMAN4 gauges and it calculates it for me the I either add or remove (reclaim) refrigerant to reach my subcooling or superheat or you can type in Fieldpiece PRH2 in to You Tube and watch a video on how to use it

Tip diameter and lenght? For measuring WB temp of air entering and leaving evaporator?

The PRH2 is an economical, stand-alone psychrometer that measures wet bulb, %RH, dew point and dry bulb temperatures, all in the convenience of a pocket tool. Portable enough to clip into a pocket, the PRH2 is great for walk-around testing, and the pen-like psychrometer features a slim, 2” long tip to take measurements easily inside ductwork. The PRH2 has a bright backlight so it’s easy to read in dark areas and runs on a single AA-battery that lasts up to 100 hours.

In what way is this device a psychomotor?

It's not a psychomotor, it's a psychrometer.

Fieldpiece Prh2 Digital Psychomotor

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

المساعدة تتبع الطلب

الحساب عربة التسوق

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

المساعدة تتبع الطلب

الحساب عربة التسوق

SAR 492

Duties & taxes included

In stock

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Description

📐 Precision in your pocket, clarity in your work.

IN DUCT READY - Narrow tip designed for seamless ductwork insertion.
POCKET SIZED POWER - Clip it on and carry precision wherever you go.
SENSOR SAFETY FIRST - Twist cap shields sensors from damage when not in use.
BRIGHT BACKLIGHT DISPLAY - Work confidently in dim or dark environments.
RAPID PSYCHROMETRIC READINGS - Get humidity, wet bulb, dew point, and dry bulb temps in seconds.

The Fieldpiece PRH2 Digital Psychromotor is a compact, battery-powered hygrometer designed for fast, accurate psychrometric measurements including relative humidity, wet bulb, dew point, and dry bulb temperatures. Its narrow tip and protective twist cap make it ideal for in-duct testing, while the bright backlight ensures usability in low-light conditions. Manufactured in the USA by Fieldpiece Instruments Inc, it’s a trusted tool favored by professionals for reliable, on-the-go environmental diagnostics.

Specifications

ASIN	B0087SD43W
Best Sellers Rank	#81,121 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #106 in Multi Testers
Brand Name	Fieldpiece
Customer Reviews	4.6 4.6 out of 5 stars (711)
Included Components	Meter
Item Dimensions	0.09 x 3 x 2 inches
Item Weight	3.2 Ounces
Manufacturer	Fieldpiece Instruments Inc
Measurement Type	Psychrometer
Model	PRH2
Part Number	PRH2
Power Source	Battery Powered
Specification Met	Some
Style Name	Digital
UPC	872641002664 696335209166
Unit Count	1.0 Count
Upper Temperature Rating	120 Degrees Celsius

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