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  User's Manual
Product Flyer
Package Art
Features and Benefits
Competitive Advantages
What's Included?
Recommended
Specifications
What is It?
The SRH3 InDuct Psychrometer is a great tool to properly charge fixed restirctor 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.
Features and Benefits
 Designed specifically for HVACR professionals, the SRH3 InDuct 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 inefficienty, 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
Competitive Advantages
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.
What's Included
- InDuct digital psychrometer - SRH3
- Stabilizing cone
- Blow-molded case with padding
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Specifications
TECHNICAL SPECIFICATIONS
Telescoping Probe Length: Up to 38 inches (97cm)
Probe Tip Diameter: 0.35 inch (9mm)
Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH (with battery removed)
Temperature Coefficient: 0.1 x (specified accuracy)/°C (28°C)
Over range: "OL" or "-OL" is displayed
Power: Single standard 9-volt battery, NEDA 1604, JIS 006P, IEC 6F22
Auto Power off: after 15 minutes of inactivity if APO is active.
Battery life: 150 hours typical (alkaline)
Low Battery Indication: is displayed when the battery voltage drops below the operating level.
Dimensions: 7.9 in (H) x 2.6 in (W) x 1.4 in (D), [200mm (H) x 66mm (W) x 36mm (D)]
Weight: Approx. 400g, including battery
Temperature:
Sensor type: Precision thermistor
Operating environment: -4°F to 140°F (-20°C to 60°C)
Range: -4°F to 140°F (-20°C to 60°C)
Resolution: 0.1°F / 0.1°C
Accuracy: ±(1°F) 32°F to 113°F
±(2°F) -4°F to 32°F, 113°F to 140°F
±(0.5°C) 0°C to 45°C
±(1°C) -20°C to 0°C, 45°C to 60°C
Relative Humidity:
Sensor Type: Capacitance polymer film
Operating environment: 32°F to 131°F (0°C to 55°C)
Range: 0% to 100%RH
Accuracy: ±(2.5%) 10% to 90%RH
±(5%) 90%RH
Note: Above accuracies stated at 73.4°F (23°C).
Sensor Response Time: 60 seconds typical for 90% of total range.
Sensor Hystersis: ±1%RH typical (Excursion of 10% to 90% to 10%RH)
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Display: 3 1/2 digit liquid crystal display (LCD) with maximum reading of 1999.
Overrange: (OL) or (-OL) is displayed.
Low battery indication: The battery symbol is displayed when the battery voltage drops below the operating level.
Measurement rate: 2.5 times per second, nominal.
Operating Environment: 0°C to 40°C at < 70% relative humidity.
Storage Temperature: -20°C to 60°C, 0 to 80% R.H. with battery removed from meter.
Auto power off: 15 seconds approx.
Standby consume current: <10μA
Battery: 4 pcs 1.5V (AAA size) UM-4 R03.
Battery Life: 4 hours (continuity) typical with alkaline battery (@20ÌÙ range test 10ÌÙ resistor).
Dimensions: 170mm(H) x 44mm(W) x 40mm(D).
Weight: 160g including batteries.
ELECTRICAL
Range: 20MW, 2000 MW.
Resolution: 10K W on 20MW range, 1 MW on 2000 MW range.
Accuracy:
20 MW range: ±(2%rdg + 2dgts)
2000 MW range: <500ÌÙ ±(4%rdg + 2dgts)
>500 MW ±(5%rdg + 2dgts)
Rated voltage: DC-DC converter to 1000VDC
Accuracy temperature: 23°C ± 5°C less than 70%RH
Temperature Coefficient: 0.1X (specified accuracy)/°C (28°C)
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