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testo 6682
Committing to the future
Efficient humidity measurement specially for Ex applications in accordance
with ATEX II 2 (1) G Ex ia [ia] IIC T4 as well ATEX II 1/2 G Ex ia IIC T4/T3
NEW!
Humidity Transmitter for Explosive Areas
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Your benefits with the testo 6682 humidity transmitter
The new testo 6682 humidity transmitter for Ex applications meets the most
stringent requirements for process monitoring in explosive applications for
pharmaceutical, chemical and process engineering.
Process safety and system availability are supported by the excellent features of
teso 6682 which enthuse those working in the field:
• Highest accuracy and long-term stability of ±1% RH
• Preventive maintenance through self-monitoring and early warning
• Historical traceability thanks to internal log
• Flexible calibration concept
• Replaceable digital testo 6616 probe
• Display and operating menu for easy operation with parameterization,
adjustment and analysis
Testo’s humidity sensor: The core piece of high quality humidity transmitters
now also for Ex areas
Testo is the first choice when it comes to superior humidity transmitters for a
critical climate and drying processes. Using our many years of experience, the
sensor concept and signal processing have now been completely overhauled.
Accuracy and long-term stability were tested as part of 5 years of interlaboratory
tests by different national calibration laboratories (PTB, CETIAT, NIST etc.). Even
without a new adjustment, the ± 1% RH limit was not exceeded.
You are on the safe side thanks to the accuracy, stability and efficiency of the
Testo humidity transmitter.
Top electrode
Bottom electrode
Substrate
Connections
Dielectric layer
Polymer, changes
permittivity continuously as
a function of relative
humidity
Allows humidity to
penetrate to the
dielectric layer and
protects against dirt
Ceramic substrate for
mechanical protection
Special anti-
corrosion design
II Instrument group: Use in non-firedamp endangered areas
1/2 Instrument category: Application range Electronics Category 2,
Application range Probe shaft Category 1
2 (1) Instrument category: Instrument can be used in Category 2 and facilitates
the connection of instruments which can be used in Category 1
G Media: For explosive mixtures of air and combustible gases, vapours or
mist
Ex Explosion-proof electrical equipment in accordance with European
standards
ia Ignition protection type: Intrinsic safety
[ia] [ia] The instrument provides an intrinsic electric circuit for an additional
instrument
IIC The instrument can be used for gases in the IIC gas group
T4/T3 Temperature class T4 or T3
Ex pprotection cclasses
The testo 6682 humidity transmitter is intended
for protection class
ATEX III 22 ((1) GG EEx iia [[ia] IIIC
T4
, the digital testo 6616 humidity probe for protection
class
ATEX III 11/2 GG EEx iia IIIC TT4/T3
.
The sensor tip can be used in a Zone 0 explosive area,
the transmitter in Zone 1.
Basic safety and health requirements are fulfilled by
compliance with EN 60079-0:2006, EN 60079-11:2007
as well as EN606079-26:2007 for testo 6616.
A
A
Explosive area, Zone 0
B
Explosive area, Zone 1
C
Non-explosive area
B
C
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testo 6682’s versatile calibration concept
Highest process stability through early warnings and selfmonitoring
The testo 6682 humidity transmitter has numerous self-analyses
available such as a warning if drift is suspected on the basis of 2 point
adjustments or incongruous operational voltage. These messages are
sent by signal to the display of the person responsible.
Thanks to this early warning system, the person responsible can
reactly promptly and take the necessary measures before the process
is interrupted. The keyword is: “System availability”.
Time-optimised handing and traceability thanks to the
exchangeable, digital testo 6616 probe
The testo 6616 humidity probe can be easily replaced by hand.
Adjustment and calibration data remain saved in the probe.
In order to be able to trace the probe’s duration of use and the
adjustments carried out, testo 6616 has its own serial number, an
operational hours counter as well as an internal log which makes
visible, on the transmitter’s operating menu, how long the probe has
already been in use and which configurations have been made.
Time saving and highest precision thanks to a practicable
calibration concept
Testo’s adjustment concept makes it possible to adjust the complete
signal chain from sensor signal (probe) using digital signal (inside
transmitter) to analog signal (isolating amplifier output signal)
The operating menu gives you the option of carrying out
• 1 point adjustments
• 2 point adjustments (can be carried out in seconds using
adjustment buttons)
• Analog adjustments
Adjustment information is stored digitally in the probe’s internal
memory. That’s how 1 point adjustments as well as 2 point
adjustments are made directly on-site or on a different testo 6682
humidity transmitter (e.g. in a calibration laboratory).
World innovation:
Thanks to analog output adjustments, it is possible to eliminate
measurement errors occurring in the transmitter on account of digital
analog conversion.
More information at www.testo-international.com/transmitter
°C
19.3
57.8
PROBE CONNECTION
%RH
Fig.: 1 and 2 point adjustment
Thanks to the digital probe: Adjustment information
stored in probe’s internal memory
Reference values input using
adjustment buttons
Salt containers or
humidity
generators
1 point: Process humidity
2 point: 11.3%, 75.3%
testo
6616
probe
testo 6682
transmitter
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Technical data / Order codes
Technical data
testo 6682 humidity transmitter
Parameters
Temperature
Meas. range 0 to 100 %RH
Humidity
Temperature
Depending on application location and type, for safety reasons there may be a limited measurement range in the explosive area.
Please observe separate safety information and the explosion temperature class.
Accuracy
Humidity ±(1 RH% + 0.007 x reading) für 0 to 90 %RH /
Temperature
Resolution
Measuring rate
Power supply
0.1% RH or 0.01 °C / 0.01 °F
1/s
2 wire: 4 to 20 mA, current loop from certified
intrinsically safe power units
U0 = 28V; I0 = 93 mA; P0 = 650 mW
Analog output
Analog output Resolution
Display
Application temperature Housing
Storage temperature
Housing/Weight
4 to 20 mA ± 0.03 mA (2 wire)
12 bit
2 line LCD with plain text line
With display =-20 to +70 °C / +32 to +122 °F
-40 to +80 °C / -40 to +176 °F
Metal, 2.01 kg / 4.33 lb
Protection class IP 65, if the transmitter is connected or sealing plugs
are inserted in the cable entry point
%RH / °Ctd / °Ftd, as well as all the parameters shown in the order codeHumidity
°C / °F
-30 to +150 °C / -22 to +302 °F
±(1.4 RH% + 0.007 x reading) für 9 0to 100 %RH /
+0.02 %RH per Kelvin depending on the process and
electronics temperature (if deviated from 25 °C / 77 °F)
±0.15 °C / 0.27 °F (PT1000 1/3 Class B)
testo 6616 humidity probe
–
–
–
–
–
–
–
–
0.45kg
–
Guidelines, standards, tests
Warranty
Material
94/9/EG (ATEX), EN 60079-0:2006,
EN 60079-11:2007, EU Guideline: 2004/108/EU
2 years, See www.testo.com/warranty for warranty conditions
Common EU Guideline 89/336/EEC
Order codes for testo 6682 transmitter
0555 6682 Bxx
B01 4 to 20 mA (2 wire, 24 VDC)
With display / English
C02
With display / German
C03
With display/ French
C04
With display/ Spanish
C05
With display / Italian
C06
With display / Japanese
C07
D01
Cable entry point M16
D02
Cable entry point NPT ½’’
F01
%RH / min / max
F02
°C / min / max
F03
°F / min / max
°C
F04
°F
F05
g/kg / min / max
F06
gr/lb / min / max
F07
g/m
F08
gr/ft
F09
ppmV / min / max
F10
°Cwb / min / max (wet bulb)
F11
°Fwb / min / max (wet bulb)
F12
kJ/kg / min / max (enthalpy)
F13
mbar/ min / max
F14
(water vapour partial pressure)
inch H
F15
(water vapour partial pressure)
%Vol.
F18
Cxx Dxx Fxx Gxx
/ min / max
td
/ min / max
td
3
/ min / max
3
/ min / max
O / min / max
2
Kxx
%RH / min / max
G01
°C / min / max
G02
°F / min / max
G03
°C
G04
G05
G06
G07
G08
G09
G10
G11
G12
G13
G14
/ min / max
td
°F
/ min / max
td
g/kg / min / max
gr/lb / min / max
3
g/m
/ min / max
3
gr/ft
/ min / max
ppmV / min / max
°Cwb / min / max
°Fwb / min / max
kJ/kg / min / max (enthalpy)
mbar / min / max
(water vapour partial pressure)
inch H
O / min / max
2
(water vapour partial pressure)
%Vol.
German-English Instruction Manual
French-English Instruction Manual
Spanish-English Instruction Manual
Italian-English Instruction Manual
Dutch-English Instruction Manual
Japanese-English Instruction Manual
Chinese-English Instruction Manual
Channel 1*
G15
G18
K01
K02
K03
K04
K05
K06
K07
*Standard scale will be delivered, if “min” and “max”
are not specified.
testo AAG
Postbox 1140, D-79849 Lenzkirch Phone: +49 7653 681-700 E-Mail: info@testo.de
Testo-Strasse 1, D-79853 Lenzkirch Fax: +49 7653 681-701 Internet: www.testo.com
EN 60079-0:2006, EN 60079-11:2007, EN 606079-26:2007,
94/9/EG (ATEX), EU Guideline: 2004/108/EU
Order codes for testo 6616 probes
Nxx Pxx
0555 6616
M03 Teflon sintered filter
N01
N02
N05
N10
P20
P50
Channel 2*
Mxx
Cable length, 1 metre
Cable length, 2 metres
Cable length, 5 metres
Cable length, 10 metres
Probe length: 200 mm
Probe length: 500 mm
0981 6244/hd/R/A/02.2009 Subject to change without notice.
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