SPER SCIENTIFIC 840034 Psychrometer-Anemometer Instruction Manual

SPER SCIENTIFIC 840034 Psychrometer-Anemometer

When operating the meter, press the buttons firmly for one full second to ensure proper operation.
Before measurement, rotate probe cover clockwise to open.
The probe and anemometer are calibrated as a system. Do not connect the probe to another psychrometer/anemometer as measurements will be inaccurate.

INTRODUCTION

Thank you for purchasing this psychrometer/anemometer. The unique meter design contains seven HVAC & RH parameters in one: Humidity, Air Temperature, Dew Point, Wet Bulb, Air Velocity, Air Volume, and BTU.
The temperature/humidity sensor is built in to the probe and is protected by a turnable cap. Please turn the cap open to get accurate temperature and humidity readings when in operation.
The microprocessor-based psychrometer is a must-have device for HVAC engineers. It is easy to get wet bulb, dew point and BTU readings.

FRONT PANEL DESCRIPTION

LCD Display

Key Pad

Power

1. Press and release the Power button to turn on the meter.
   Mode

2. With the meter on, press the Mode button to select the different units of measure: Temp (Temperature), DP (Dew Point), WB (Wet Bulb), RH (Relative Humidity), Velocity. Press the Mode button longer than two seconds to select VOL and CAP.
   Enter

3. Press Enter to confirm the scale settings and calibration.
   Mx/Mn/Up ▲

4. Press the Mx/Mn button to view average, maximum, and minimum values.
   Rec/Start

5. In velocity mode, press Rec/Start to start measuring volume or capacity.
   Hold/Down ▼

6. Press the Hold button to retain the current reading in the display, and then press Hold again to return to live measurement.

7. Press the Power button and the Hold button simultaneously for more than 3 seconds to enter the RH calibration mode.

8. Press Enter and Hold simultaneously to turn backlighting on or off.

Auto Off
The 840034 defaults to auto-off mode when turned on. To override the auto-off function, with the meter off, hold the Power button and Mx/Mn buttons simultaneously for more than two seconds. The meter will turn on with the auto-off function inactive.

Select Unit

1. With the meter off, press the Power button for more than two seconds to select metric or imperial measurement.
2. Press Mx/Mn or Hold to select the scale.
3. Press Enter to save; the meter will turn on automatically.

MEASUREMENT PROCEDURES

Air Flow
Your model 840034 meter measures both basic measurements, including air temperature, humidity, dew point, wet bulb, and air velocity as well as extended measurements, including air volume, sum of volume, capacity, and sum of capacity.

1. When the meter is turned on, air temperature is shown on the LCD.
2. To view the other measurement parameters, press the Mode button (continually) to display them in turn.
3. Press Mode for over two seconds to switch between volume and capacity.

Max, Min and Avg

1. When the meter is turned on, min/max and average readings will automatically be saved for all basic measurements: air temperature, dew point, wet bulb, humidity, and velocity.
2. Press the Mx/Mn button to view the average value, maximum value, and minimum value in turn.
3. Press Mx/Mn again to return to normal mode. The data will be erased once the meter is turned off.
4. When in Mx/Mn/Avg mode, press the Mode button to cycle through the different parameters (see following).

Air Volume: Outlet Size

1. While in standard mode, hold the Mode button to enter air volume mode.
2. To measure the volume, you must first enter the air outlet size. There are 3 choices:

• Length and Width. Press the Hold button to select the numeric setting first. Then press Mx/Mn to select the appropriate value (0-9). Values are displayed from 0 to 9 in a cycle. After entering the length, press Enter to save the setting. Repeat this process for width setting. Press Enter again to save these settings.
• Diameter. While in the default setting mode (length), press Enter for over two seconds to choose a diameter setting. Press the Hold button to select a numeric setting first, and then press Mx/Mn to select the appropriate value. After selecting, press Enter to finish.
• Area. While in diameter setting mode, press Enter for over two seconds to enter the area setting. Press the Hold button to select a numeric setting first, then press the Mx/Mn button to select the appropriate value (0-9). After selecting, press Enter again to finish. (See following examples.)

Air Volume
After you set the outlet size settings, there is a 20 second wait before you can begin measurement.
During the 20 second waiting period, the count -down number is displayed on the top left-hand corner. The meter will beep when the wait time is over.

After you begin measuring volume, the meter will automatically count the volume for 60 seconds to calculate an average value. During this 60 seconds, move the probe along the entire outlet to cover each part so the measured data will be more accurate.

The count-down time is displayed on the top left corner and the meter beeps when 60 seconds is up.

After 60 seconds the LCD displays the average volume.
To measure additional outlets, press Enter and you will be returned to the air volume dimensions setup screen (see below).

If measuring more than one outlet, press Enter again to repeat the procedure from outlet size input.
After measuring multiple outlet volume, press Mx/Mn key to review the sum of all outlets. Press Hold key to review the last outlet volume.

Capacity Size Set Up
Hold the Mode button while in normal mode to enter air volume, then press again for approximately one second to enter capacity mode.

There are 3 choices for entering size:

• Length and Width. Press Hold to select the numeric setting. Then press Mx/Mn to select the appropriate value (0-9). These values will cycle between 0 to 9. After entering the length, press Enter to save the setting. Repeat the procedure for width setting. Press Enter again to finish size setting.
• Diameter. With mode set to length, press Enter for over two seconds to choose diameter settings. Press Hold to select the numeric setting first, then press Mx/Mn to select the appropriate values (0-9). After selection, press Enter again to finish size setting and move to the next step.
• Area. While in diameter setting mode, press Enter for over two seconds to enter area settings. Press the Hold button to select the numeric first, then press Mx/Mn to select the appropriate values (0-9). Press Enter again to finish the size setting and advance to the next step

Available Size Range
Please refer to the chart below for input size ranges.

Capacity Measurement
To measure capacity, put the probe in the outlet, and press Enter. The meter will count for 60 seconds to measure the average temperature and RH%. The countdown will display in the top left corner of the LCD, and the meter will beep when 60 seconds is up. The meter will display the out-let size setting automatically.

After pressing Enter to finish and leave size settings, there is a waiting period before putting the probe to the air source. During this time, the countdown time is displayed in the top left corner and the meter beeps when time is up.
– OR –
Press Rec/Start to begin measuring right away.

Note: It takes 90 seconds to first stabilize the sensor. When taking several measurements, the waiting period automatically adjusts from 90 to 20 seconds on the second measurement. Move the probe along the air source to get an accurate value.

If you would like to measure more than one outlet, wait for 10 minutes between measurements to allow the humidity sensor to stabilize to ambient humidity.

After measuring capacity, the meter will automatically calculate capacity for 60 seconds and give an average value.

During the 60 second measurement time, move the probe to cover the entire area so the measured data is more accurate. The count-down time displayed on the top left is a reminder, and the unit beeps when 60 seconds is up.
After the 60 seconds is up, average volume will display on the LCD.

If there is more than one outlet size, press Enter to repeat the procedure for outlet size input. You can measure as many times as necessary.
After measuring more than one outlet volume, you can press Mx/Mn to review the sum of all outlets. Press the Hold button to review the last outlet capacity.

LOW BATTERY

Your unit contains a two-level battery indicator. Level 1 will flash. In this situation, the meter will work normally; however users should install new batteries soon.
The level 2 indicator will show on the LCD screen without flashing. In this situation the batteries should be changed immediately as follows:

1. Open the battery cover on the back of the meter.
2. Remove the old batteries.
3. Insert four (4) new AAA batteries and make sure they are inserted for correct polarity.
4. Replace cover.

TROUBLESHOOTING

Meter is on, but there is no display

1. Make sure that the Power button has been pressed long enough to turn on the unit.
2. Check and/or replace the batteries. Be sure there is good contact and that the polarity is correct.
3. Remove batteries for one minute. Replace them, and try again.

Display disappears

1. Check to see whether low battery indicator appeared before display disappeared. If yes, replace batteries.
2. Turn on the meter by holding the Power button and the Mx/Mn button simultaneously for more than two seconds. This will turn on the meter and disable the auto power off function of the meter.

ERROR CODES

• E1 The probe is disconnected or damaged
• E2 Below measuring range; calibrate the meter.
• E3 Above measuring range; calibrate the meter.
• E4 The original data is in error—Value error.
• E5 Out of meter display range.
• E6 The value is not calculated completely.
• E11 Humidity calibration error.

SPECIFICATIONS

-20°C to 60°C

| 0.1°C (0.1°F)| (±1°F)

±0.6°C

Relative Humidity| 0 to 100% RH| 0.1%| ±3% at 10 to

90% RH

(cal. Temp.)

±5% at other

ranges

Dew Point| (-7.6 to 158°F)

-68 to 70°C

| 0.1°|
Wet Bulb Temperature| (-90 to 158°F)

-22 to 70°C

| 0.1°|
Air Velocity| 0.3 to 35 m/s

(1 to 114 ft/s)

| 0.1| ±5%
Air Volume| 0 to 99999 m³/s

(0 to 99999 cfm)

| 0.1(0-99999.9)

or

1 (1000-99999)

| ±5%
Capacity| 0-99999

BTU/H (KW)

| 0.1 (0-999.9)

or 1 (1000-

|

• Power: 4 x 1.5V AAA battery or 9V > 200A adapter
• Dimension: (H x W x D)
• Probe: 170 x 77 x 40mm³
• Meter: 175x70x33mm³

OPTIONAL ACCESSORIES

• 840027 AC Adapter
• 840089 Rubber Holster
• 840090 Water Resistant Instrument Pouch

WARRANTY

Sper Scientific warrants this product against defects in materials and workmanship for a period of five (5) years from the date of purchase, and agrees to repair or replace any defective unit without charge. If your model has since been discontinued, an equivalent Sper Scientific product will be substituted if available. This warranty does not cover probes, batteries, battery leakage, or damage resulting from accident, tampering, misuse, or abuse of the product. Opening the meter to expose its electronics will break the waterproof seal and void the warranty. To obtain warranty service, ship the unit postage prepaid to:

SPER SCIENTIFIC LTD.
8281 E. Evans Rd., Suite #103
Scottsdale, AZ 85260
480-948-4448
The defective unit must be accompanied by a description of the problem and your return address. Register your product online at www.sperwarranty.com within 10 days of purchase.

References

• Sper Scientific Warranty

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