Differential pressure transmitter for air up to 5000 Pa Aug 14
DTL Differential pressure transmitter for air up to 5000 Pa DTL is a transmitter for measuring differential pressure in air and neutral gases in air-handling systems etc, e.g. for controlling pressure in ventilation systems. * Several measuring ranges within 0...5000 Pa * High level of accuracy and stability * Output signal 0...10 V or 4...20 mA * With or without display * Quick and easy mounting * Models with square root output signal Function The transmitter consists of a plastic sensor-housing and a membrane of silicon LSR. The differential pressure affects the membrane which is connected to the sensor element. The element is manufactured with state-of-the art technology with a ceramic beam onto which thick-film resistors have been applied. The pressure on the membrane causes a movement which is transferred to the ceramic beam. Flexing of the beam gives changes in resistance. The changes in resistance are transmitted by means of built-in electronics to an analogue output signal. The measuring element gives a rapid response and a high level of accuracy. The properties of the ceramic element ensure that the transmitter has excellent long-term stability. The sensor housing The sensor housing is made of transparent plastic. The cable input is on the left hand side with cable gland. The cover, of red plastic, is closed by a single screw and can easily be detached from the hinges when mounting. Display DTL is also available with LCD display (3 ½ digits ) on the front showing the current pressure. See also model DMD, leaflet 4-340 for differential pressure sensor with display. Square root calculation This is used in applications with Prandtl-tube measurement giving the differential pressure depending on the current airflow. DTL can be supplied with built-in conversion of the output signal to the square root of the differential pressure being measured. In this case DTL gives an output signal that is proportional to the current airflow. Mounting The sensor should be mounted vertically using screws in the mounting holes on the back edge. There are also two mounting holes on the upper side of the sensor housing. Connection set A connection set consisting of tubing and pressure outlets can be supplied as accessory to DTL. See overleaf. section position 6-605 Aug 14 Models Output signal 0...10 V DC Output signal 4...20 mA DTL05/05 -50...+50 Pa DTL05/05-420 -50...+50 Pa DTL3 0...300 Pa DTL1-420 0...100 Pa DTL5 0...500 Pa DTL3-420 0...300 Pa DTL10 0...1000 Pa DTL5-420 0...500 Pa DTL16 0...1600 Pa DTL10-420 0...1000 Pa DTL25 0...2500 Pa DTL16-420 0...1600 Pa DTL50 0...5000 Pa DTL25-420 0...2500 Pa DTL50-420 0...5000 Pa Transmitter with display has a suffix -D. I.e.: DTL25-D, DTL3-420-D. Technical data Supply voltage Power consumption Output signal Load impedance 24 VAC +15/-10% or 18...33 V DC. (4...20 mA version only 18...33 V DC) 10 mA (0...10 V), 30mA (4...20 mA) 0...10 V or 4...20 mA (0...20 mA on request) > 10 kohm (0...10 V), < 400 ohm (4...20 mA) Maximum differential pressure Measuring range up to 300 Pa: 5kPa Measuring range over 500 Pa: 10 kPa Pressure connection Connection pipes for 6mm tube Cable connection Screw terminals. Cable gland with built-in strain relief Pg 11. Cable Three wire. Flexible cable is recommended. Mounting Vertical with the pressure connections downwards Material sensor housing Transparent plastic membrane LSR (silicon) Form of protection IP54 This product conforms with the requirements of European EMC standards CENELEC EN50081-1 and EN50082-1 and carry the CE-mark. RoHS: Ce produits répond aux exigences de la directive 2011/65/EU du Parlement européen et du Conseil. Accuracy linearity hysteresis Temperature dependense Ambient temperature Storage temperature Dynamic responstime Resolution ANS DTV-ANSLUTNING < +/-0,7 % fs < +/-1,0 % fs < 0,04% fs /°C fs = fullscale, over the whole range 0...+70°C -10...+70°C < 10 ms Measuring range up to 100 Pa: < 0,2% fs : < 0,1% fs elsewhere Mounting kit with 2m plastic tube and 2 pressure outlets. Pressure connection of metal, angled 90° Dimension and wiring DTL + 0-10 V Supply voltage 24 V AC / 18...33 V DC Output signal 0...10 V DC 0 System neutral DTL + 4...20 mA (two wire connection) Supply voltage 18...33 V DC Output signal 4...20 mA Head Office Sweden Phone: +46 31 720 02 00 Web:www.regincontrols.com Mail:[email protected]
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