H ygrocontrol GmbH HYGROMESS TYPE 83 TRANSMITTER MANUAL Version 06 / 10 Feuchte- und Temperatur-Meßtechnik Fax.: 06181-927930 Moselstraße 2 B, D-63452 Hanau, Tel.: 06181-92790 Internet: www.hygrocontrol.de e-mail: info@hygrocontrol.
HYGROCONTROL Manual for Type 83 Page -1- TABLE OF CONTENTS: 1. Fundamental Features of Series 83 2 2. Preparations before operating 2 2.1. 2.2. 2.3. Unpacking and Checking Set-up for Operation Instructions for Dispatch 2 2 3 3. Technical Data 3 4. HART 4 5. Operation 4 5.1 5.2 5.2.1 5.2.2 5.2.3 5.2.4 5.2.5 5.2.6 5.2.7 5.2.
HYGROCONTROL Manual for Type 83 Page -2- 1. Fundamental Features of Series 83 Transmitters HYGROMESS Humidity and Temperature Meters detect relative Humidity and Temperature. For this purpose the probes are equipped with a capacity type humidity sensor of very small mass. The temperature detection is done by a Pt-1000 RTD , which is placed very close to the humidity sensor to avoid differences in temperature between the two sensors.
HYGROCONTROL Manual for Type 83 Page -3- Please take care that cable diameter corresponds with the dimension of the gland and so will guarantee a dense screwing. During operation the housing of the instrument should be closed. 2.3 Instructions for Dispatch If there any problems you are not able to correct, we ask you to contact our technical department or to return the instrument with a short description of the fault.
HYGROCONTROL Manual for Type 83 4.
HYGROCONTROL Manual for Type 83 Page -5- electronics. We use a microprocessor for the control of all internal functions. The electronics for transmitting the temperature and humidity sensor signals are built into a IP-65 housing of 80 x 160 x 55 mm. Two different operational modes may be chosen by the user which are: "MEASURING" and "CALIBRATION" 5.1 Operational Mode "Measuring" After connecting the type 83 instrument to power, the transmitter is in its normal measurement mode.
HYGROCONTROL Manual for Type 83 Page -6- 10% - mixed LiCl and ZnCl2 solution 20, 35, 50, 65, 80, 95% - unsaturated LiCl solutions The marked relative humidities relate to a temperature of 22°C and do have a temperature dependency. The accuracy of the solutions at 22°C is +/- 0.5%, they are not toxic and are not dangerous to the environment. To assure the easiest handling and highest accuracy, the solutions are enclosed in glass ampoules, which should be opened only before usage.
HYGROCONTROL Manual for Type 83 Page -7- To do a calibration, the transmitter has to be connected to a computer with a coupler type LPT (changes RS232/3V with galvanic isolation to USB). The computer should have a driver which installs a virtual COM-Port. Possible and necessary commands are shown in next chapter. We recommend doing a calibration at 2 humidity points which are widely separated (for example 0%RH and 80%RH).
HYGROCONTROL Manual for Type 83 5.2.6. Page -8- List of Commands: First an "F" for FullPromt output must be sent. Each command must be ended by . Hxxx : HUMID.
HYGROCONTROL Manual for Type 83 Page -9- Press RET will jump back to normal measurement mode.. ERASE: this command will delete the calibration values [ 0] to [ 9] if You confirm the request OK? [Y/N] by answering Y. Tempcal: Temperature Offset -20 is in the memory! (=correction by -0,2°C). FullPromt: R=43988 F=47456 Q=22962 H=5526 T=26570 DAC(h) = 8E48 ADC(h) = 987D 5.2.
HYGROCONTROL Manual for Type 83 6. Page - 10 - Practical Instructions and Limits Besides the temperature limits specified for all our transmitters, probe heads and sensors, you should observe the following rules when using our instruments: 6.1 Direct Contact with Liquids Avoid in any case direct contact between the humidity sensor and any liquid. The sensor may only detect the humidity in the atmosphere over the surface of a liquid or a solid material.
HYGROCONTROL Manual for Type 83 Page - 11 - 6.3 Resistance against Chemical Attack Our sensors are well known for their resistance against most chemical attacks. To give the user some information over the additional errors which are arising from some chemicals, we listed our experiences over the last 10 years. (See the table at the end of this manual). Be aware, that the given concentrations are valid for a single chemical in normal atmosphere (room temperature) only.
HYGROCONTROL Manual for Type 83 Page - 12 - results of a measurement of saturated vapour over ice at different temperatures below zero.
HYGROCONTROL Manual for Type 83 Page - 13 - Table 4: Gas Concentrations with Humidity Error < 2.5 %RH Chemical MAK-Concentration according to SUVA 1) maximum Concentration at continuous load ppm g/m3 ppm Ethanol (Alcohol) 1000 1,9 3500 Isopropanol 400 0,98 Toluol + Xylol 100 0,38 Gasoline (pure) 300 1,1-1,4 Expl.
