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Table of Contents
Summary of Contents for TRH 8706N
- Page 1 OPERATION MANUAL POCKET PSYCHROMETER Model:8903/8904/8906 Model: 8706N 8706 8716...
- Page 2 INTRODUCTION Thank you very much for purchasing this psychrometer! This unique meter is designed as pocket size, battery operated for Humidity, Dry Bulb, Dew Point, Wet Bulb, External Temperature & Temperature Differential measurement. The sensor is also specially protected by tunable cap. The psychrometer is a micro processor- based design.
- Page 3 MATERIAL SUPPLIED This package contains: The meter x 1 Battery x 2 (AAA size ) Operation manual White plain box / gift box Optional accessory : External temperature probe : P/N: VZ87P6AZ Calibration salt bottles : (33% and 75%) P/N: VZ0033AZ1 , VZ0075AZ1 Hard carry case : P/N: VM68706B WARNING...
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Page 4: Controls And Indicators
CONTROLS AND INDICATORS Model:8706N LCD DISPLAY Dry Bulb External Temperature HOLD - Power on/off C/ F RESET RESET 2) C/ F Key -Switch between display of C and F MODE MX/MN MX/MN 3) MODE key - N/A 4) HOLD Key... - Page 5 Model:8706 LCD DISPLAY Wet Bulb Dry Bulb Dew Point External Temperature - Power on/off HOLD 2) C/ F Key -Switch between display of C C/ F RESET RESET and F 3) MODE key -Switch between MODE MX/MN MX/MN display of Db & (Db=Air Temp.) 4) HOLD Key - Hold display...
- Page 6 Model:8716 LCD DISPLAY External Temperature Air Temp. T1-T2 T2-DP Point Wet Bulb 1) ON/OFF key ON/OFF ON/OFF HOLD -Power on/off T/DP -Switch between T/DP =T1-T2, T1=Air Temp. T2=ExternalTemp. ) MX/MN MX/MN C/ F RESET RESET 3) C/ F key -Switch between C and F 4) HOLD Key - Hold display...
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Page 7: Auto Power Off
AUTO POWER OFF (SLEEP FUNCTION) Unit will turn itself off after 5 minutes (8706N, 8706) or 10 minutes (8716). To override Auto Power Off function, press + HOLD (8706N, 8706) or ON/OFF + HOLD(8716) while the meter is off. When " n " appears (See Fig.A), release HOLD button. -
Page 8: Data Hold Function
While in normal mode, press "HOLD" ,only the T2 will be held. Press "HOLD"again to release. DEW POINT FUNCTION 8706N isn't equipped with this function. 8706: Press MODE button until "DP" appears on display. Select to display dew point or dry bulb (air temp.) in any mode while... - Page 9 See Fig. E1. Fig. E1 Fig. E WET BULB FUNCTION 8706N isn't equipped with this function. 8706 Turn the meter on by pressing button. User will see "Wb" temperature indicated on the display. See Fig.E...
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Page 10: Min./Max. Function
RESET or key. Fig. F1 Fig. F2 Fig. F3 MIN./MAX. FUNCTION (1) Press and hold MN/MX (8706N, 8706) MX/MN MX/MN (8716) button until (MIN) RESET RESET appears on display.(See Fig.G) Display is now showing minimum humidity and temperature readings in memory. - Page 11 (3) To return to current temperature and humidity readings press and MX/MN MX/MN hold MN/MX or button until Min RESET RESET or Max disappear from display. MX/MN MX/MN (4) Press RESET or button more than RESET RESET two seconds to clear current reading from memory.
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Page 12: Low Battery
& These functions are only for 8716 model. is calculated by subtracting the T2 (Ex.temp.) from T1(Air temp.). is calculated by subtracting the DP (dewpoint) from T2(Ex. temp.). T/DP (1) Press button until appears on display.(See Fig.J) (2) Press button until appears on display. -
Page 13: Troubleshooting
CALIBRATION 1. Turn the meter off and plug the sensor into 33% salt bottle. Press "ON/OFF + C/F " keys more than one sec. to enter calibration mode. 2. "32.8%" will flash on LCD and DP, WB is displayed as "---.-" that means the values are invalid in the calibration process. - Page 14 C) Replace a new battery and try again. D) Remove the batteries for one min. And then put back for second try. No Display A) Check whether the low battery indicator displayed before display disappears, if yes, replacing a new battery.
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Page 15: Specification
Note: a. Dry Bulb temperature means air (Internal) temperature. Dew point & Web Bulb are calculated from internal temperature. b. When the meter is on, pluggin in an external probe might cause " ER 5 " error in min. or max mode of ext. -
Page 16: Return Authorization
RETURN AUTHORIZATION Authorization must be obtained from the supplier before returning items for any reason. When requiring a RA (Return Authorization) , please include data regarding the defective reason, the meters are returned along with good packing to prevent any damage in shipment and insured against possible damage or loss. - Page 17 Accuracy, the Zenith of Measuring / Testing Instruments ! Hygrometer/Psychrometer Thermometer Anemometer Sound Level Meter Air Flow meter Infrared Thermometer K type Thermometer K.J.T. type Thermometer K.J.T.R.S.E. type Thermometer pH Meter Conductivity Meter T.D.S. Meter D.O. Meter Saccharimeter Manometer Tacho Meter Lux / Light Meter Moisture Meter Data logger...
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