User manual VAISALA HMP247T DATASHEET

[. . . ] Box 26, FIN-00421 Helsinki, FINLAND Tel: +358 9 894 91 Fax: +358 9 8949 2485 Email: industrialsales@vaisala. com www. vaisala. com HMP247T Dewpoint Transmitter for High Humidity Measurements Features/Benefits · · · · · · Vaisala HUMICAP® Dewpoint Transmitter HMP247T shown with the cover open. Designed for high humidity applications Measurement range: -40. . . +100 °C Patented, warm sensor Incorporates HUMICAP® Sensor for excellent accuracy and long-term stability, negligible hysteresis and resistance to dust and most chemicals Outer cover provides protection from rain and direct sunlight NIST traceable (certificate included) Designed for air intake of power turbines The Vaisala HUMICAP® Dewpoint Transmitter HMP247T was developed to monitor the air intake of gas and liquid-fuelled power turbines. [. . . ] The patented warmed sensor head prevents condensation from forming on the sensor. Protective enclosure The HMP247T includes a white, painted aluminium enclosure with an installation kit for the probe. The HMP247 Dewpoint Transmitter is installed in the aluminium enclosure at the factory. The HMP247T can be equipped to be powered with either 24 VDC/VAC or with an internal 110/230 volt power supply unit. The enclosure consists of an outer cover that protects the dewpoint transmitter from direct sun light and rain. The installation kit protects the probe from outer water splashes, keeps the sensor dry, and prevents any parts that could vibrate loose from entering the turbine. Selection of configurations The HMP247 is available with a selection of transmitter configurations. However the suggested configuration code for turbine applications is HMP247G1A1A2AA33A2A1B. The HMP247T can be ordered separately for installation with the customer's existing HMP247 transmitter. [. . . ] The HMP247 probe head is leak-proof up to 1 MPa. Technical Data Dewpoint temperature Measurement range -40. . . +100 °C (-40. . . +212 °F) Accuracy: find the intersection of the dewpoint temperature curve and the dewpoint difference reading (process temperature - dewpoint temperature) on the x-axis and read the accuracy in dewpoint measurement at the y-axis Outputs Two analog outputs, selectable and scaleable Typical accuracy of analog output at +20 °C (+68 °F) Typical temperature dependence of analog output Serial output available 0. . . 20 mA, 4. . . 20 mA, 0. . . 1 V, 0. . . 5 V, 0. . . 10 V ±0. 05 % full scale 0. 005 % full scale/°C RS 232C (Optional RS48S) screw terminals for 0. 5 mm2 wires (AWG 20), stranded wires recommended 24 VDC/VAC (20. . . 28 V) or 115/230 VAC (Must be specified at time of order) < 500 ohm > 2 kohm (to ground) > 10 kohm (to ground) -40. . . +60 °C 0. . . +50 °C (+32. . . 122 °F) -40. . . +70 °C (-40. . . 158 °F) G-AlSi12 (DIN 1725) IP65 (NEMA 4) for 7. . . 10 mm diameter cables (8 x 0. 5 mm2 shielded cable) PPS grid with steel netting General Connections Operating voltage Response time (90%) at +20 °C (68 °F) in still air (with sintered filter) Sensor 15 s HUMICAP® KC sensor Dimensions HMP247T Dimensions in mm (inch). 254 (10") 203. 2 (8") Recommended external load for current outputs 0. . . 1 V output 0. . . 5 & 0. . . 10 V outputs Operating temperature range for electronics with display cover Storage temperature range Housing material Housing classification Bushing Humidity sensor protection (Ø 13. 5 mm) 76. 5 (3") Complies with EMC standard EN61329-1:1997 + Am1:1998; Industrial Environment. 13 (0. 51") 144. 53 (5. 69") 101. 6 (4") 441. 45 (17. 38") 100 (3. 94") 488 (19. 21") 164. 3 (6. 46") 100 (3. 94") 193 (7. 6") 357. 6 (14. 08") [. . . ]