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Table of Contents
Related Manuals for Fieldpiece SDP2
Summary of Contents for Fieldpiece SDP2
- Page 1 Fieldpiece Dual In-Duct Psychrometer OPERATOR'S MANUAL Model SDP2...
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Page 2: Quick Start
Quick Start 1. Power on your SDP2 by holding the button for 1 second. 2. Select mode with the TEET/ΔT button: Target Evaporator Exit Temperature, Target Temp Split, or Normal (real-time return and supply.) 3. Press the PARAM button to cycle between dry bulb, relative humidity, wet bulb, dew point, and enthalpy. - Page 3 20° temperature split ignores latent heat. TEET, developed by Fieldpiece, is an intuitive test allowing you to aim for a target value rather than a target difference between two values.
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Page 4: Maintenance
The dual display, bright backlight, and rugged rubber boot with probe clips make sure the SDP2 is ready for any job. WARNING Do not retract the sensor probe by pulling on the cord. - Page 5 Display Auto Power Off Enabled Battery Life Wireless Signal Strength Relative Humidity 80 80 Dew Point Wet Bulb Dry Bulb Enthalpy Target Evaporator Exit Temperature Target Dry Bulb Temp Split Temperature Maximum Display Minimum Display Hold Display Δ Display (Return-Supply) Top Display Shows Return Bottom Display Shows Supply or the difference between actual and target...
- Page 6 Controls Hold 1 second to toggle power on/off. Press to toggle backlight. Cycle through dry bulb, wet bulb, dew point, relative humidity, and Enthalpy. PARAM Hold for 1 second to search for a model HG3 or SMAN4 and send real-time SYNC measurements.
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Page 7: How To Use
How to Use Normal Mode Measure real-time dry bulb, rela- tive humidity, wet bulb, dew point, or BTU/LBM for each probe. 1. Remove vinyl protective sleeves if covering sensors. 2. Press the PARAM button to cycle dry bulb temperature, relative humidity, wet bulb, dew point, or BTU/LBM. - Page 8 tor how close the target temperature is to the actual temperature. 1. Insert the RETURN probe into the return plenum. See Figure 1 for recommended return plenum placement of probe. Drill or punch a 3/8" hole into the return plenum if needed. 2.
- Page 9 6. Seal any holes before leaving the jobsite. RCONE1 Probe Lock Figure 2. Screw a threaded RCONE1 into the duct or plenum wall to secure a sensing probe. Use the RCONE1s and the magnet on the SDP2 for hands-free in-duct testing.
- Page 10 Figure 1 Recommended hole placement for SUPPLY measurement. Look behind the panel before drilling and make sure you do NOT drill a hole through any critical components. Recommended hole placement for RETURN measurement. Figure 2 Use the RCONE1 for hands-free in-duct measuremesnts.
- Page 11 2. Use arrow keys to select IDWB. (IDWB will blink) 3. Press SYNC on SMAN4 for 1 second. 4. Press SYNC on SDP2 for 1 second to connect and sync real-time indoor wet bulb. 5. Use a temperature accessory head and ET2W wire- less transmitter to sync ODDB and view real-time target superheat while you charge outside.
- Page 12 2. Use arrow keys to select a measurement line. 3. Press SYNC on HG3 for 1 second. 4. Press SYNC on SDP2 for 1 second to connect and sync ALL lines of the test that it can fill. 5. Values will be held if OUTPUT is pressed. Going back to INPUT will show the held values.
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Page 13: Specifications
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 (<18°C or >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 30 minutes of inactivity if APO... - Page 14 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%) <10%RH and >90%RH Note: Above accuracies stated at 73.4°F (23°C). Sensor response time: 60 seconds typical for 90% of total range.
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Page 15: Sensor Care
2 liter bottle cap. Place the container with the salt solution and the SDP2 probe in a seal- able plastic bag, and leave the bag in a room temperature location where it will not be disturbed for 24 hours. - Page 16 A/C Basics The Evaporator, Condenser, Restric- tor (Throttling valve) and Compressor are the four basic components of an air conditioner. Following one pound of refrigerant through the system shows the function of each component. Subcooled liquid refrigerant at high pressure enters the restrictor and is throttled to saturated refrigerant at a lower pressure.
- Page 17 indoor air. The refrigerant stays at the same temperature and pressure until all the refrigerant evaporates into a gas. After the refrigerant becomes a gas, it will continue to absorb heat and become superheated at which point its temperature will change. The Superheat measurement is the best indication of refrigerant charge level in a fixed restrictor system.
- Page 18 additional removal of heat causes a temperature drop that is known as subcooling. TXV/EXV systems are charged to subcooling since super- heat is controlled by the throttle valve. Subcooling measurements are taken on the liquid line between the condenser and TXV/EXV. Finally, the subcooled liquid enters the restrictor and the cycle starts again.
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Page 19: Limited Warranty
Any implied warranties arising from the sale of a Fieldpiece product, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited to the above. Fieldpiece shall... -
Page 20: For Service
For Service In the USA, call Fieldpiece Instru- ments for one-price-fix-all out of war- ranty service pricing. Send check or money order for the amount quoted. Send the meter freight prepaid to Fieldpiece Instruments. Send proof of date and location of purchase for in-warranty service.
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