Testo 6741 Manual

Testo Måleudstyr 6741

Læs gratis den danske manual til Testo 6741 (4 sider) i kategorien Måleudstyr. Denne vejledning er vurderet som hjælpsom af 37 personer og har en gennemsnitlig bedømmelse på 4.3 stjerner ud af 19 anmeldelser. Har du et spørgsmål om Testo 6741, eller vil du spørge andre brugere om produktet?

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Side 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

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

Produkt Specifikationer

Mærke:	Testo
Kategori:	Måleudstyr
Model:	6741

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