SPECIFICATIONS
Humidity–
Range
Accuracy
10.00 to 95.00% (Model 4080)
10.00 to 95.00% (Model 4083)
5.00 to 95.00% (Model 4085)
±1.5% RH
Resolution 0.01
Temperature–
Range
Accuracy
Resolution
Dew Point–
Range
Resolution
–40.00 to 220.0 °F
(–40.00 to 104.4 °C)
±0.4°C (0-40 °C), otherwise 1°C
0.01 on all readings below 100,
0.1 on all readings above 100
–40.00 to 140.0 °F
(–40.00 to 60.00 °C)
0.01 on all readings below 100,
0.1 on all readings above 100
Probe Material Epoxy (Model 4080)
Epoxy (Model 4083)
Stainless Steel (Model 4085)
Response Time 30 seconds (Model 4080)
◄
30 seconds (Model 4083)
Approx.10 seconds (Model 4085)
QUICK REFERENCE
ON/OFF
Turns unit on and off.
HOLD/SCROLL
Alternates between the Auto Scroll mode and the Hold mode. When the unit is initially turned on it will be in the Auto Scroll mode. It displays a reading, pauses, then scrolls to the next measurement. Press HOLD button to stop the scrolling and the display will read only the present measurement.
DISPLAY/MEM/ALM
Switches between viewing current readings, high/low memory recordings, and high/low alarm set points for relative humidity, temperature, and dew point.
CLEAR MEM/ALM OFF/SET
Permits clearing the memory settings, turning off a sounding alarm, and setting an alarm.
GENERAL MEASUREMENT
1. Turn the unit on by pressing the ON/OFF button.
2. The display automatically begins scrolling
through measurements for relative humidity,
temperature, and dew point. Indicators ( RH; °F,
°C; DP °F, DP °C) appear on the display to
denote the current measurement.
3. Freeze the display at the desired measurement
by pressing the HOLD button. Display “freezes”
at the desired measurement while the unit
continues sampling.
4. Place the probe near the substance to be
measured and read the display.
5. Return to the Auto Scroll mode by pressing the
SCROLL button.
6. Press the ON/OFF button to turn the unit off.
This resets all stored memories and alarms.
MEMORY RECALL OPERATION
The memory function permits viewing the highest and lowest readings stored in memory for relative humidity, temperature, and dew point. “HI” appears on the display indicating the highest reading stored, and “LO” appears on the display indicating the lowest reading stored. All measurements (relative humidity, temperature, and dew point) are constantly scanned. If a new high or low reading is achieved while in the
Display, Memory, or Alarm modes, the reading is automatically captured and is available for display.
Displaying highest/lowest memory readings
1. Press the MEM button until the word “MEM”
appears in the lower, right-hand corner of the
display. The unit is now in Memory mode.
2. If the unit is in the Auto Scroll mode when the
Memory mode is activated, the display will scroll
through the highest and lowest readings
recorded for relative humidity (RH), temperature
(°F/°C), and dew point (DP °F/DP °C).
3. If the unit is in the Hold mode when the Memory
mode is activated, the highest reading recorded
for that specific measurement will be displayed.
Press the SCROLL button to return to the Auto
Scroll mode and then press the HOLD button
at any time to “freeze” the display at a particular
measurement.
Clearing memory readings
1. If the unit is not in the Memory mode (“MEM”
appearing on the display), press the MEM
button until “MEM” appears on the display.
Note: Memories may only be cleared while the unit is in the Memory mode.
2. While the unit is in Memory mode, press the
CLEAR MEM button to reset all of the memory
settings. Memory settings will automatically
reset to the current readings for relative
humidity, temperature, and dew point.
3. Exit the Memory mode and return to the normal
display mode by pressing the MEM button twice.
ALARM OPERATION
High and low alarm set points may be entered in any 0.1 increment for relative humidity, temperature, and dew point measurements. When an alarm set point is reached, an audible alarm sounds continuously for 1 minute, unless turned off manually, and then sounds once every minute to conserve battery life. After the first minute, a visual indicator appears on the display as a flashing
“ALM”. The alarm will sound if an out-of-range condition exists irrespective of the measurement being displayed.
Setting an alarm
1. Press the ALM button until “ALM” appears on
the display to indicate the unit is in Alarm mode.
2. If the unit is in the Auto Scroll mode when the
Alarm mode is activated, the display will scroll
through the high (“HI”) and low (“LO”) alarm
settings for relative humidity, temperature, and
dew point.
3. If the unit is in the Hold mode when the Alarm
mode is activated, the high alarm setting for that
specific measurement will be displayed. Press
the SCROLL button to return to the Auto Scroll
mode and then press the HOLD button at any
time to “freeze” the display at a particular alarm
setting.
4. Once the desired measurement appears on
the display, press the HOLD button to “freeze”
the display if necessary.
5. Press the SET button to advance the display in
increments of 0.1. For rapid advancement,
press and hold the SET button.
6. Once the desired alarm set point has been
entered, exit the Alarm mode by pressing the
ALM button and return to normal display mode.
The alarm is now activated and will sound if an
out-of-range condition occurs.
Note: When setting an alarm in degrees Celsius, the units advance unevenly because the units are being advanced internally in the Celsius equivalent of 0.1° Fahrenheit. Alarm set points may be entered in °F or °C but they must be equivalent.
Note: Very rapid changes in humidity and temperature may cause the dew point alarm to sound a false alarm. A “phantom” sensed out-ofrange dew point alarm may be triggered by either the humidity sensor or temperature sensor sensing a change faster than the other. (Example: instantly taking the probe from a 70 °F, 80% RH environment to a 20 °F, 5% RH environment may trigger a false alarm.) This may be eliminated by lowering the alarm set point for dew point or by turning the unit off and, after the probe reaches an equilibrium, turning it back on.
Silencing an active alarm
Once an alarm set point is reached, the alarm will continue to sound and “ALM” will flash until turned off (even if the measurement value returns to an in-range condition). Silence an active alarm by pressing the ALM OFF button in any mode. The alarm will NOT trip again until the current value passes through the alarm set point and again is within a normal (non-alarm) range. Example: If the RH “HI” alarm is set at 80.10 and the current reading is 80.20, the alarm will sound. After the
ALM OFF button is pressed, the alarm will be silenced and will not be triggered again until the
RH falls below 80.10 (resetting the alarm) and then rises above the set point to 80.20 (triggering the alarm).
To determine which setting caused an out-of-range alarm, display the memory’s high and low values and search for a value that is beyond the alarm set point.
Default alarm settings
When the unit is turned on, the alarms automatically default to out-of-range set points so that the alarms will not trigger. The default settings are:
Relative Humidity .................. HI = 100 LO = 0
Temperature °F .................... HI = 221 LO= -40
Temperature °C .................... HI = 105 LO = -40
Dew Point/Frost Point °F ...... HI = 140 LO = -40
Dew Point/Frost Point °C ..... HI = 60 LO = -40
To prevent any alarm from sounding, simply set the alarm set point out of the unit’s range. As an example, in relative humidity any alarm set point above 100 or less than zero will never trip the alarm. To quickly reset all alarm values to the default out-of-range condition, simply turn the unit off, wait 2 seconds, and then turn it on again.
Alarm sounds
Three distinctive alarm sounds distinguish each measurement. The alarm sounds are:
Dew Point/Frost Point 1 beep per second
Temperature
Relative Humidity
2 beeps per second
3 beeps per second
Note: If two or more alarms are sounding simultaneously the sound will be heard in the following sequence: dew point, temperature, and relative humidity.
GENERAL INFORMATION
For ease of use the display is optimized at a 20degree angle. It is best viewed by the user when sitting or standing with the unit flat on a lab bench or desk. When viewed straight-on the display will appear to have less contrast.
An audible confirmation beep will be heard each time a button is pressed.
USER CALIBRATION
WARNING: User calibration is not recommended or supported. User calibration adjustment will void the factory-supplied National Institute of Standards and Technology (NIST) Traceable® Certificate. The unit has been calibrated against NIST traceable instrumentation.
For users wishing to check the units calibration, we suggest utilizing a calibration laboratory with capabilities to generate a known humidity and utilize sophisticated chilled mirror test equipment.
Salt as a calibration standard/comparison method
We do NOT recommend or use the saturated salt calibration method. NIST does NOT use the salt method.
The proper technique involved in the salt method is far more difficult and far more time consuming than most literature suggests. Liquid volume, air volume, sensor placement, temperature, air movement, vapor pressure, equilibration time, and a host of other factors can all contribute to gross errors. On occasion these errors are reproducible. For information on the saturated salt method we suggest studying American Society of Testing Materials
Method ASTM E104 and obtaining a paper from the
National Institute of Standards and Technology JOURNAL
OF RESEARCH, Vol. 81A, No. 1, pages 89–96.
Dial hygrometers as a calibration standard/ comparison method
Absolutely do NOT calibrate against hair dial hygrometers.
Inaccuracies in dial units caused by age of hair and other factors can greatly affect readings. Dial units are not sensitive to rapid changes and readings generally lag actual humidity changes by hours. Users of some dial units have encountered errors of over 50% relative humidity.
Sling psychrometer as a calibration standard/ comparison method
Absolutely do NOT calibrate against sling units. Sling units are limited to the accuracy and resolution of their thermometers. Temperature errors of as little as 0.05° can cause significant humidity errors. Unfortunately temperature, time, air volume, and technique can cause reproducible, but large errors. In low humidities, in small spaces, the addition of a wet wick may change the actual humidity. If too much swing time is taken, a partially dry wick produces errors. If too little swing time is taken, sufficient evaporation may not have taken place to cool the thermometer. Sling units generally measure crude averages of a large volume of air. Users of some sling units have encountered errors of over 50% relative humidity.
RS-232 OUTPUT
The RS-232 output is set to “off” by default in order to preserve battery life. In order to utilize the RS-
232 output, the accessory Data Acquisition System is required. It is also recommended when utilizing the RS-232 output that the accessory AC Adapter be connected to the meter. (see the “Accessories” section)
To enable the RS-232 output:
Simultaneously press and release the DISPLAY and CLEAR MEM buttons. The display will flash
“2320” to indicate that the RS-232 output is enabled.
Simultaneously pressing and releasing the
DISPLAY and CLEAR MEM buttons will toggle the
RS-232 output on and off. The display message of “2320” indicates RS-232 output is enabled,
“232F” indicates RS-232 output is disabled.
To preserve battery life, always disable the RS-232 output when it is not being utilized.
ACCESSORIES
Cat. No. 4236 - AC Adaptor for continuous use.
An accessory adaptor for continuous AC operation. A battery is NOT required to use the adaptor
Cat. No. 4099 - Data Acquisition System Accessory.
A powerful and easy to use computer data capture/data logging program works with Traceable® Instruments with computer output. Records interval readings from 1 to
10,000 seconds; displays minimum/maximum readings; and utilizes an alarm mode that permits the user to be notified visually, audibly, and by email when an alarm is triggered. Data is stored to a file that can be printed in any report or spreadsheet format. Networking server/ client capability allows the captured data to be monitored on a remote workstation and/or by email. It is designed to work with Windows® 98/Me/NT/2000/XP/Vista. Includes a CD, cable (supplied USB and serial connections) that plugs into the instrument and computer.
ALL OPERATIONAL DIFFICULTIES
If this meter does not function properly for any reason, please replace the battery with a new high quality battery (see the “Battery Replacement” section). Low battery power can occasionally cause any number of “apparent” operational difficulties. Replacing the battery with a new fresh battery will solve most difficulties.
Frozen display
Turning the unit on and off rapidly may lock
(freeze) the display. Wait 2 seconds before switching the unit from off to on. If a “frozen display” occurs, remove the battery, wait 1 minute, insert the battery, and resume operation.
BATTERY REPLACEMENT
A faint display or no display are indicators that the battery must be replaced. A “BAT” indicator appears on the display when the battery is low.
Remove the battery cover from the back of the unit. Remove the exhausted battery and replace it with a new 9-volt alkaline or lithium battery.
Replace the battery cover. Do NOT use a heavyduty or regular battery since they do not have sufficient power.
WARRANTY, SERVICE, OR RECALIBRATION
For warranty, service, or recalibration, contact:
CONTROL COMPANY
12554 Old Galveston Rd. Suite B230
Webster, Texas 77598 USA
Ph. 281 482-1714 • Fax 281 482-9448
E-mail [email protected] www.traceable.com
Control Company is ISO 9001:2008 Quality-Certified by DNV and ISO/IEC 17025:2005 accredited as a
Calibration Laboratory by A2LA.
TRACEABLE
HUMIDITY/
®
TEMPERATURE/
DEW POINT
METER
INSTRUCTIONS
Control Company Cat. No. 4080 / 4083 / 4085
Traceable ® is a registered trademark of Control Company.
© 2016 Control Company. 92-4080-20 Rev. 6 061316