User manual HONEYWELL KSL

[. . . ] When setting the switching point, it must first be determined what change is to be monitored, since some settings result in certain disadvantages. The following requirements must be taken into consideration: Low change in the rate of flow in the high flow speed range: the switching point must be chosen very close to the measuring value of the normal flow, since the change of measuring values is very small when the rate of flow changes. Since the temperature compensation exhibits a certain amount of delay in comparison to the actual change of temperature, such a setting of the switching point is possible only with slow changes of temperature. Low change in the rate of flow in the low flow speed range: the switching point may be selected at a greater distance from the measuring value of the normal rate of flow, since the changes of the measuring values are larger when the rate of flow changes. [. . . ] · The yellow LED will go off (output relay at RLSW4R is released). The device is now set to function. Trouble shooting Problem KSL. . . exhibits changed tripping behavior KSL. . . switches at rapid temperature increase of the medium Possible Cause None or wrong mains voltage connected Sensor not installed correctly Sensor heavily contaminated by the medium Temperature gradient is outside of technical specifications Corrective Action Check mains voltage and connection Check installation conditions Carefully clean sensor with water Turn potentiometer , , Sensitivity" slightly further clockwise. Check temperature gradient of the system. Should you have any further questions, please contact TELEFON: 0 70 31 / 637-02 FAX: 0 70 31 / 637-850 INTERNET: http://www. honeywell. de/fema Volksbank Schönbuch eG 784 001 (BLZ 603 628 04) TELEFON: 0 70 31 / 637-02 FAX: 0 70 31 / 637-850 INTERNET: http://www. honeywell. de/fema Volksbank Schönbuch eG 784 001 (BLZ 603 628 04) BANKEN: Deutsche Bank AG Böblingen 05 / 89 200 (BLZ 600 700 70) VORSITZENDER DES AUFSICHTSRATES: Arnold Günther BANKEN: Deutsche Bank AG Böblingen 05 / 89 200 (BLZ 600 700 70) VORSITZENDER DES AUFSICHTSRATES: Arnold Günther VORSTAND: Horst Bellwied, Regine Blickwede, Joachim Frosch, Wolfgang Fuchs, Horst Wild, Michael Löffler (stellv. ) SITZ: Offenbach am Main, Amtsgericht Offenbach am Main 5 HRB 6225 VORSTAND: Horst Bellwied, Regine Blickwede, Joachim Frosch, Wolfgang Fuchs, Horst Wild, Michael Löffler (stellv. ) SITZ: Offenbach am Main, Amtsgericht Offenbach am Main 5 HRB 6225 22. 08. 2001 22. 08. 2001 Fema Regelgeräte Honeywell AG Böblinger Straße 17 D-71101 Schönaich The calorimetric airflow controller KSL. . represents an economical alternative to the common pressure pickup. The installation is simple and quick by means of a flange mount (for channel installation) or by means of the PG7 threaded connector. The switching point can be selected infinitely with the integrated potentiometer. In case a flow is present, the switching output is conductive (yellow LED in the unit is on). Proper use The flow controllers of the series KSL. . are intended to be used in monitoring of flow speeds of gaseous media within the specified technical data. A main area of application is heating, ventilating and air conditioning in the field of automated building systems. Function principle The flow controllers of the series KSL. . function according to the calorimetric principle. The units are switched when a certain preselected threshold value is reached. In the calorimetric measuring principle a temperature-sensitive resistor is heated. The heating procedure is achieved by a separate heating resistor. Flow in the medium dissipates heat from the precision resistor, the temperature of the resistor changes and thus its resistance value. However, not only the flow speed of the medium has an influence of the dissipated amount of heat, but also its temperature, therefore a relation between flow and temperature must be established. This is achieved by a second, temperature-dependent precision resistor near the first one. [. . . ] · In case of vertical pipes, the direction of flow should be upwards. · maintain a free inlet distance of 5xD upstream of the sensor and 3xD outlet distance downstream of the sensor. · Screw in the flow controller by means of the hexagon of the sensor housing only. · The flow controller can be installed in any position. [. . . ]