COSA Xentaur 83 User Manual

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ygrocontrol

HYGROMESS TYPE 83 TRANSMITTER

GmbH

MANUAL

Feuchte- und Temperatur-Meßtechnik Moselstraße 2 B, D-63452 Hanau,

e-mail:

[e-mail]

Version 06 / 10

06181-92790

Tel.:

Internet:

Fax.:

www.hygrocontrol.de

06181-927930

HYGROCONTROL Manual for Type 83 Page - 1 -

TABLE OF CONTENTS:

1. Fundamental Features of Series 83 2

2. Preparations before operating 2

2.1. Unpacking and Checking 2

2.2. Set-up for Operation 2

2.3. Instructions for Dispatch 3

3. Technical Data 3

4. HART 4

5. Operation 4

5.1 Mode "MEASUREMENT" 5

5.2 Mode "CALIBRATION" 5

5.2.1 General Notes concerning Calibration 5

5.2.2 How often Calibrations should be done 5

5.2.3 Calibration Chamber 6

5.2.4 Mounting the Calibration Device 6

5.2.5 Operation via BUS Commands 7

5.2.6 List of possible Commands 8

5.2.7 Output Examples 8

5.2.8 List of used Abbreviations 9

6. Practical Instructions and Limits 10

6.1 Direct Contact with Liquids 10

6.2 Filters 10

6.2.1 Resistance against high Air Velocities 10

6.2.2 Resistance against Dust and Aerosols 10

6.3 Resistance against Chemical Attack 11

6.4 Protection of Transmitter Electronics 11

6.5 Influence of Temperature on Humidity 11

6.6 Humidity Measurements over Ice 11

6.7 Measurements under Pressure and Vacuum 12

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.
Incoming sensor signals are temperature compensated and
transferred into linearised analogue or digital outputs by digital
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"

"MEASURING" is the normal mode for picking up humidities and
temperatures, compensating, linearising and transferring the values
to the outputs.

"CALIBRATION" mode is used for recalibration of sensor
characteristics by special prepared LiCl solutions.

2. Preparations before Operating

2.1 Unpacking and Checking

Every instrument has been examined before dispatch in respect to its
electrical and mechanical functions. After receipt of instrument,
please check its operation. In case of any malfunction or damage,
return the instrument with a detailed description of faults.

2.2 Set-up for Operation

The instrument has to be connected to a power supply of 9 to 36
VDC. The correct voltage is marked on the type label you find on one
side of the housing. Do not use voltages other than the marked one!
Severe damage would be the result of applying the wrong voltage.
The cross section of your conductors should meet the dimensions of

0.5 up to 1.5 mm2 (AWG 16 to AWG 20). You will have to connect
the 2 wires to the terminals marked (+) and (-), the shield should be
connected at the cable gland. Opening of the housing is done by
turning the four screws (quick-release types) with a screwdriver to
the left.

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. When returning please do not forget to
pack the instrument safely in a cardboard box and fill up holes with
soft packing material to avoid damage.

3. Technical Data

3.1 Humidity

Humidity Range 0....100 % RH.

Resolution 0,1 % RH.
Humidity Sensor SE - 02
Temperature Error of Humidity ± 0,01 % RH./ °C
Repeatability < 0,5 % RH.
Hysteresis after 4 hour Cycle
10 % - 95 % - 10 % r. F. < 0,5 % RH.
Linearity of Electronic / Humidity < 1 % RH.

3.2 Temperature

Range -50.....+150 °C

Resolution 0,01 °C
Temperature Sensor RTD: Pt-1000
System Accuracy for Temperature
over the total Range ± 0,35 °C
Linearity of Electronic / Temperature ± 0,15 °C

3.4 Maximum environmental conditions during operation

Transmitter Electronics -10...+ 50 °C
Probe Tube with Sensors -50...+150 °C
Max. Humidity 95%RH

3 .5 Connections

Screw Terminals

Marked with + and –

HYGROCONTROL Manual for Type 83 Page - 4 -

4. HART

Following universal commands are available:

0 Read unique identifier
1 Read primary variable
3 Read current and four variables
12 Read message
13 Read tag, description, date
14 Read primary variable sensor information
15 Read output information
16 Read finally assembly number
17 Write message
18 Write tag, description, date
19 Write finally assembly number
34 Write damping value
35 Write range values
44 Write primary variable units
49 Write primary variable sensor serial number
59 Write numbers of response preambles
109 Burst mode control

Sending following user messages will not cause their storage but
result in starting the functions below:

%Hxxx starts a humidity calibration with xxx * 0,1 %RH
%Txxxx will do a temperature adjustment to xxxx * 0,01 °C
%Y positive confirmation of humidity calibration
%N negative confirmation of humidity calibration
%F end of calibration and show of original users message

Command 3 results in the output of measurement values as follows:

primary variable Humidity in %RH shown unit = %
secondary variable Temperature in °C
tertiary variable Humidity digits shown unit = none
quaternary variable Reference digits shown unit = none

5. Operation

HYGROCONTROL 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 type RTD , which is
placed very close to the humidity sensor to avoid differences in
temperature between the two sensors.
Incoming sensor signals are temperature compensated and
transferred into linearised analogue or digital outputs by digital