AC Tool Supply RH350-NIST Gebruikershandleiding - Pagina 5

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75% Calibration
1. Insert the meter sensor into the 75% salt reference bottle.
2. Allow the meter one hour to stabilize
3. Press and hold the [M
4. "75.3%" (reading may vary depending on operating temperature) will flash on the LCD. After
30 minutes, the flashing will stop to indicate that the 75% calibration is complete.
5. Calibration is now complete. Turn power off.
Note: Frequently check the water level in the salt bottles. Both the 33% and 75% bottles
should be completely saturated with some water present. The bottles are sealed and not
refillable.
RS-232 PC Communications Interface
The meter is equipped with an RS-232 PC interface jack (3.5mm phono) for connection to a PC.
The cable to connect the meter to the PC is included in the optional 407752 data acquisition kit. The
kit includes Windows
display real-time measurements in a series of selectable formats. For more information or specific
operating instructions, refer to the User Guide included with the 407752 kit or contact Extech.

Specifications

Function
Humidity
Temperature (air)
Temperature (external K)
Display
Sensor Type
Response Time
Dew Point
Wet Bulb
Low Battery Indicator
Overrange Indicator
Underrange Indicator
Operating Conditions
Storage Conditions
Power Supply
Battery Life
Dimensions / Weight
actoolsupply.com
/AV
] button for 2 seconds to enter the 75% calibration.
in
RST
TM
compatible software that allows the user to store readings in a text file and
Range and Resolution
0.0 to 100.0% RH
o
-20 to 50
-200 to 1370
Triple LCD
Humidity: Precision capacitance sensor
Internal Temperature: Thermistor
External Temperature: K-Type Thermocouple
60 seconds typical
o
-68 to 50
C (-90.4 to 122.0
measurements)
o
-21.6 to 50
C (-6.88 to 122.0
temperature measurements)
Yes
E2 (air) E5 (T1), E8 (T2)
E3 (air), E6 (T1), E9 (T2)
o
-20 to 50
C (-4 to 122
o
-40 to 85
C (-40 to 185
4 x 1.5V 'AAA' batteries
Approx. 300 hours
230 x 57 x 44mm (9 x 2.2 x 1.7"); 153g (5.3 oz.)
actoolsupply.com
o
C (-4.0 to 122.0
F)
o
o
C (-328 to 2498
F)
o
F) (calculated from RH and Air temperature
o
F) (calculated from RH and Air
o
F); < 99% RH non-condensing
o
F); <99% RH non-condensing
5
Accuracy
±3% RH (10 to 90%)
@ 23°C
o
o
±1
C (±1.8
F)
o
o
±(0.3% rdg + 1
C (1.8
RH350-en-GB_V2.5 11/14
F))