1. Product Introduction 1-1 Features Humidity, Temperature and Dew Point measurements 0.01 Resolution for Temperature and RH measurements Fast response time High level of accuracy Large LCD display Two year warranty 1-2 Applications Science Experiments ...
2. Safety Information Read the following safety information carefully before attempting to operate or service the meter. Only qualified personnel should perform repairs or servicing not covered in this manual. 2-1 Cautions! DO NOT submerge the products mentioned in this manual in water or any other types of liquids.
5. Specifications Display 5 Digit LCD with bar graph indicator Unit of Measurement Humidity: %RH (Relative Humidity) Temperature: °C or °F Dew Point: °C or °F Temperature Compensation Automatic for humidity function Sampling Time of Data Logger Manual Pushing the data logger button once will save data one time Auto 1, 2, 10, 30, 60, 600, 1800, 3600 seconds...
4. Operation Instructions he H300 could take as long as ten minutes for the display to completely “settle” and display the actual temperature or relative humidity level if the meter is exposed to two vastly different environments. The sensors used to make the environmental measurements must have time to acclimate to the test environment.
4-2 Measuring Procedure The H300 default unit of measure is °C. To switch to °F see section 5-1. The sampling time default for data logging is set at 2 seconds. To change this sampling time see section 4-7. 4-3 Humidity & Temperature Measurement 1.
7. Press the “REC Button” (4-4, Fig.1) momentarily to start the data log function. The REC symbol will be displayed on the LCD. The data logger function can save up to 1000 values of measure (either Humidity & Temp. or Dew Point & Temp). 8.
5. Advanced Measuring Procedures Note: Cancel any Hold or Record functions before trying to perform and advanced measuring procedures. 1. Press and hold the “SET Button” (4-6, Fig. 1) for about 3 seconds until the LCD displays “Code”. Once you release the button you should see 1000 in the main display. 1000 Is the password code to allow advanced measuring procedures.
5-4 Clear Memory 1. Press and hold the “Set Button” (4-6, Fig.1) for about 3 seconds. 2. The main LCD should then display1000. Now press the “Enter Button” (4-4-, Fig. 1). 3. Press the “Set Button” (4-6, Fig.1) three times and you will see the CLr marker in the bottom of the LCD.
7. Send Data from RS232 Socket 1. Cancel Hold and REC functions. 2. Press and hold the “Send Button” (4-5, Fig. 1) for about 2 seconds. You will see 232 in the bottom of the LCD. 3. Press the “Send Button” (4-5, Fig. 1) and both the top and bottom display will begin to flash. At this time the data is being sent out the “RS232 Socket”...
The 16 digit data stream will be displayed in the following format: D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1D0 Each digit indicates the following status: Start Word D12 & D11 Indicator for Display °C = 01 °F = 02 % RH = 04...
For the most current repair charges please visit www.anaheimscientific.com and click on “service/repair”. Return all merchandise to Anaheim Scientific with pre-paid shipping. The flat-rate repair charge for Non-Warranty Service does not include return shipping. Return shipping to locations in North American is included for Warranty Service only.
Anaheim Scientific distributor. Anaheim Scientific will, without charge, repair or replace, at its option, defective product or component parts. Returned product must be accompanied by proof of the purchase date in the form of a sales receipt.