Testo 6743 Bruksanvisning
Testo
Mätutrustning
6743
Läs nedan 📖 manual på svenska för Testo 6743 (4 sidor) i kategorin Mätutrustning. Denna guide var användbar för 17 personer och betygsatt med 4.4 stjärnor i genomsnitt av 9 användare
Sida 1/4
%RH
°Ctd
°C
Measurement of dewpoints in the range from
-45 °Ctd to +30 °Ctd
Testo polymer humidity sensor with high accuracy and
long-term stability
Analog output 4 to 20 mA (2-wire) and optional alarm plug
with 2 integrated switch outputs
Compact design with rotatable housing by 350° for
optimum positioning of display
Display with operating menu (optional)
Dewpoint transmitter to -45 °Ctd
testo 6740
The testo 6740 was especilally developed for trace humidity
measurement in compressed or dry air (e. g. granulate
dryers). Thanks to a special adjustment, optimum accuracy
in the trace humidity range has been achieved.
For the display of the relevant trace humidity parameters, a
freely scalable analog output is available, optionally with a
switch contact plug for MAX monitoring. In addition to this,
the testo 6740 stands out thanks to its compact and user-
friendly design, such as the rotatability of the housing by
350° for the optimum positioning of the display.
www.testo.com
testo 6740 – Dewpoint transmitter to -45 °C
td
Technical data
Supply
Analog outputs
Switch outputs (opt. alarm plug, 0554 3302)
Resolution 12 bit
Current/accuracy 4 to 20 mA (2-wire) / ±40 µA
load 12 V DC: max. 100 , 24 V DC: max. 650 W W,
30 V DC: 950 W
Inputs and outputs
Measurement rate 2 s
Contacts 2 closer contacts, pot.-free,
max. 30V/0.5A
Voltage supply 24 V DC (12 to 30 V DC permitted);
with alarm plug (0554 3302) 20 to 28 V DC
Display
Design
Installation
General technical data
Material/colour Plastic, polyacrylamide
Dimensions 199.5 x 37 x 37 mm
(with standard plug)
203.5 x 37 x 37 mm
(with plug 0554 3302)
Display
Protection class IP65 (with plug attached and wire
connected)
EMC According to guideline 89/336 EEC
Thread / process
connection
G½ thread or NPT½“ thread
Weight Approx. 300 g
High intensity 7-segement display
Operating temperature
(housing)
-20 to +70 °C (+4 to +158 °F)
Operating conditions
Storage temperature -40 to +80 °C (-40 to +176 °F)
Dewpoint/trace humidity
Measurement parameters
Calculated parameters °Ctd, °Ftd, °CtA, °FtA, ppmv, mg/m3, °F
Units %RH, °C
Measurement
uncertainty
±1 K at 0 °Ctd (+32 °Ftd)
±3 K at -20 °Ctd (-4 °Ftd)
±4 K at -40 °Ctd (-40 °Ftd )
Normed atmospheric dewpoint
Measuring range -70 to -15 °CtdA (-112 to -5 °FtdA)
(at 30 bar rel./ 435 psi)
-54 to +10 °CtdA (-94 to +50 °FtdA)
(at 3 bar rel./43.5 psi)
-45 to +30° CtdA (-76 to +86 °FtdA)
(at 0 bar rel./0 psi)
Sensor Polymer humidity sensor with protocolized trace
humidity adjustment at -40 °Ctd (-40 °Ftd)
Miscellaneous
Process pressure max. 50 bar (725 psi)
Measuring range -45 °Ctd to +30 °Ctd
Temperature
Measuring range 0 to 50 °C (32 to +122 °F)
Measurement uncertainty ±0,5K (0 to 50 °C/32 to 122 °F)
Sensor NTC
Scaling Freely scalable via display buttons
Switch thresholds Standard 6 °Ctd/12 °C
td, freely
programmable with display
Current consumption 21 mA (without alarm plug)
65 mA (with alarm plug)
Resolution °C: 0.1
RH: 0.1
°Ctd: 0.1
°Ftd: 0.1
°CtA: 0.1
°FtA: 0.1
Rotatability (display
positioning)
350° around housing axis
ppmv: 1 / 10 / 100
(dep. on meas. value)
mg/m3: 1 / 10 / 100
(dep. on meas. value)
°F: 0.1
testo 6740 – Dewpoint transmitter to -45 °C
td
Technical drawings
G½ or NPT½
SW27
37
Ø 12
Installation depth
in process
33 40 108.5
181.5 10 34
38
56
38.9
51
71
176
Standard connection plug (4 to 20 mA – 2-wire)
Switch contact plug: cable connection plug for supply/
analog output (4 to 20 mA – 2-wire)
1
2
1
2
Produktspecifikationer
| Varumärke: | Testo |
| Kategori: | Mätutrustning |
| Modell: | 6743 |
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