Operating instructions Pressure sensor PN / / 2007

Transcription

1 Operating instructions Pressure sensor PN / 00 0 / 2007

2 Contents afety instructions Function and features Function witching function Installation Electrical connection Operating and display elements enu enu structure enu explanation Parameter setting Parameter setting general etting the output signal User settings (optional) ervice functions Operation Operation indication Read the set parameter values Fault indication cale drawing... 4 Technical data etting ranges Factory setting

3 Preliminary note In these instructions the operating elements are represented as follows: [ode/enter] = ode/enter button The indications are represented as follows: [OU] = parameter OU, [Hno] = parameter value Hno An instruction on how to act is indicated by. Example: Check the reliable functioning of the unit. A reaction to the action is indicated by >. Example: > LED is lit. afety instructions Please read the product description prior to installing the unit. Ensure that the product is suitable for your application without any restrictions. If the operating instructions or the technical data are not adhered to, personal injury and/or damage to property may occur. Please check for all applications that the product materials (see Technical data) are compatible with the media to be measured. For gaseous media the application is limited to max. 25 bar. 3

4 2 Function and features The pressure sensor detects the system pressure. It shows the current system pressure on its display. It generates output signal according to the set output configuration. OUT = switching signal for system pressure. Applications Type of pressure: relative pressure Order no. easuring range Permissible overload pressure Bursting pressure bar PI ) bar PI bar PI PN PN PN PN PN PN mbar PI bar PI bar PI PN bar inhg bar inhg bar inhg PN ) For units with measuring range > 999 PI /0 of the PI value is displayed. The displayed value must be multiplied by factor 0. Example: displayed value = 5; real value = 5 * 0 = 50 PI. Pa = bar 0 / kpa = bar 00 tatic and dynamic overpressures exceeding the indicated overload pressure are to be avoided by taking appropriate measures. The indicated bursting pressure must not be exceeded. Even if the bursting pressure is exceeded only for a short time, the unit can be destroyed. NOTE: Risk of injury! For gaseous media the application is limited to max. 25 bar. Indication of the current system pressure as from % of the value of the measuring range. Display 0 does not mean that the system is free of pressure! 4

5 3 Function 3. witching function OUT changes its switching state when the set switching limits have not been reached or have been exceeded (P, rp). The following switching functions can be selected: hysteresis function / normally open: [OU] = [Hno] ( fig. ). hysteresis function / normally closed: [OU] = [Hnc] ( fig. ). First the set point (P) is set, then the reset point (rp) with the requested difference. window function / normally open: [OU] = [Fno] ( fig. 2). window function / normally closed: [OU] = [Fnc] ( fig. 2). The width of the window can be set by means of the difference between P and rp. P = upper value, rp = lower value. P P FE 2 P rp HY P rp 0 0 t Hno Hnc 0 0 t Fno Fnc P = system pressure; HY = hysteresis; FE = window (acceptable range) 4 Installation Before mounting and removing the sensor, make sure that no pressure is applied to the system. Insert the unit in a ¼ NPT process connection. Tighten firmly. 5

6 5 Electrical connection The unit must only be connected by an electrician. The national and international regulations for the installation of electrical equipment must be observed. Caution: For the output circuit the same protective measures as for the supply circuit must be taken. Insert a miniature fuse according to IEC heet ( 5 A fast acting). The permissible potential difference between supply and output circuit is max. 300 V. Disconnect power. Connect the unit as follows: connector view (sensor) n.c. L N A B A: supply circuit B: output circuit : safe separation 6

7 6 Operating and display elements 2 ode/enter et 3 4 : LED display - Display of the system pressure ). - Display of parameters and parameter values. 2: LED red Indication of the switching status; lights if the output has switched. 3: et pushbutton - etting of the parameter values (scrolling by holding pressed, incremental by pressing briefly). 4: ode/enter pushbutton - election of the parameters and acknowledgement of the parameter values. ) PI value for units with measuring range > 999 PI = displayed value 0 7

8 7 enu 7. enu structure RUN = ode/enter = et RUN 7.2 enu explanation P/rP Upper / lower limit value for the system pressure at which output changes its switching status. OU Output function for OUT: witching signal for the limit values: hysteresis function [H..] or window function [F..], normally open [. no] or normally closed [. nc] each. EF Extended functions / Opening menu level 2. HI / LO aximum / minimum value memory for the system pressure. COF Zero point calibration. 8

9 CAr d / dr dap di Uni Calibration reset. witch-on delay / reset delay for für OUT. Damping for OUT. Update rate and orientation of the display. tandard unit of measurement for the system pressure. 8 Parameter setting During the parameter setting process the unit remains in the operating mode. It continues its monitoring function with the existing parameters until parameter setting has been terminated. 8. Parameter setting general Each parameter setting requires 3 steps: electing parameter Press [ode/enter] until the requested parameter is displayed ode/enter et 2 etting the parameter value Press [et] and keep the buton pressed. > Current setting value of the parameter bit flashes for 5 s. > After 5 s: etting value is changed: incremental by pressing briefly or scrolling by holding pressed. ode/enter et The numerical values are incremented continuously. If the value is to be reduced: Let the display move to the maximum setting value. Then the cycle starts again at the minimum setting value. 3 Acknowledge parameter value > Press [ode/enter] briefly. The parameter is displayed again. The new setting value is stored. ode/enter et et more parameters: tart again with step. Finishing parameter setting: Press [ode/enter] several times until the current measured value is displayed or wait for 5 s. The unit returns to the operating mode if no button is pressed for over 5 s after acknowledgement of the new parameter value. 9

10 Changing from menu level to menu level 2: Press [ode/enter] until [EF] is displayed. ode/enter et Press [et] briefly. > The first parameter of the submenu is displayed (here: [HI]). ode/enter et Locking / unlocking The unit can be locked electronically to prevent unintentional wrong settings. > Ensure that the unit is in the normal operating mode. Press [ode/enter] + [et] for 0 s. [Loc] is displayed. ode/enter et During operation: > [Loc] is displayed briefly when you try to change parameter values. For unlocking: Press [ode/enter] + [et] for 0 s. ode/enter et > [Loc] is displayed. On delivery: Unlocked. Timeout: If no button is pressed for 5 s while the parameters are being set, the unit returns to the operating mode with unchanged values. 0

11 8.2 etting the output signal 8.2. etting the switching limits elect [P] and set the value at which the output switches. elect [rp] and set the value at which the output switches back. rp is always lower than P. The unit only accepts values which are lower than P etting the output function elect [OU] and set the switching function: [Hno] = hysteresis function / normally open, [Hnc] = hysteresis function / normally closed, [Fno] = window function / normally open, [Fnc] = window function / normally closed. 8.3 User settings (optional) 8.3. etting the unit of measurement for the system pressure elect [Uni] and set the unit of measurement: [bar] (= bar / mbar), [PA] (= Pa / kpa), [inh] (= inhg), or [PI]. For units with measuring range > 999 PI /0 of the PI value is displayed. The displayed value must be multiplied by factor 0. Example: displayed value = 5; real value = 5 * 0 = 50 PI. Labels for the different units of display are enclosed with the unit. tick the respective label on the sensor or fill in the blank label Configuring the display elect [di] and set update rate and orientation of the display: [d]: Update of the measured value every 50 ms. [d2]: Update of the measured value every 200 ms. [d3]: Update of the measured value every 600 ms. [Ph]: Display of the measured peak value remains for a short time (peak hold). [rd], [rd2], [rd3], [Ph]: Display like d, d2, d3, Ph; rotated by 80. [OFF]: The display is deactivated in the operating mode.

12 8.3.3 Zero-point calibration elect [COF] and set a value between -5% and 5% of the final value of the measuring range. The internal measured value 0 is shifted by this amount. Resets the calibration set by COF to the value set at the factory. Press [ode/enter] until [CAr] is displayed. Press [et] and keep it pressed until [---] is displayed. Press [ode/enter] briefly etting the delay time for OUT [d] = switch-on delay for OUT. [dr] = switch-off delay for OUT. elect [d] or [dr], set value between 0. und 50 s (at 0.0 the delay time is not active) etting the damping for OUT elect [dap], set value between s; (at 0.00 [dap] time is not active). dap-value = response time between pressure change and change of the switching status in seconds (s). Correlation between switching frequency and [dap]: f max = 2dAP. 8.4 ervice functions 8.4. Reading the min./max. values for the system pressure elect [HI] or [LO], press [et] briefly. [HI] = maximum value, [LO] = minimum value. Delete memory: elect [HI] or [LO]. Press [et] until [---] is displayed. Press [ode/enter] briefly. 2

13 9 Operation After power on of the supply voltage the unit is in the Run mode (= normal operation). It carries out its measurement and evaluation functions and generates output signals according to the set parameters. 9. Operation indication 2 Current system pressure in bar, Pa, PI. PI value for units with measuring range > 999 PI = displayed value 0. 2 witching status of OUT. 9.2 Read the set parameter values Press [ode/enter] briefly to scroll the parameters. Press [et] briefly to indicate the corresponding parameter value for 5 s. After another 5 s the unit returns to the Run mode. 9.3 Fault indication [OL] [UL] overload pressure (measuring range exceeded) underpressure range (measuring range below the minimum value) 3

14 0 cale drawing ) 20 ) /2" 20UNF 2A 4 27 : Display; 2: programming button ) 22.6 (PN4220) 2) 88.3 (PN4220) NPT-B2 4

15 Technical data Nominal voltage [V] AC ( Hz) Voltage tolerance [%] / +0 Operating voltage [V] AC Current rating [A] (20 C),.5 (45 C), (60 C), 0.25 (70 C) shortly (< 200 ms) 5 A (+20 C); 6 A (+60 C) Integrated Watchdog Voltage drop [V]... < 2 Current consumption [ma]... < 0 Power-on delay time [s] Accuracy / deviations (in% of the span) - switch point... < ±.0 - linearity... < ± hysteresis... < ± 0. - repeatability (with temperature fluctuations < 0K)... < ± 0. Long-time stability (in% of the span per year)... < ± 0. Temperature coefficients (TEPCO) in the compensated temperature range C (in% of the span per 0 K) - greatest TEPCO of the zero point / of the span... < ± 0.2 / < ± 0.3 aterials (wetted parts)... stainless steel (30322); ceramics; FP (Viton) Housing material... stainless steel (3045); PC (acrolon); PBT (Pocan); PA; FP (Viton); EPD/X (antoprene) Protection / Protection class... IP 67 II (PN4220- PN4222) Protection / Protection class... IP 65* II (PN PN4229) Insulation resistance [Ω]... > 00 (500 V DC) hock resistance [g] (DIN / IEC , ms) Vibration resistance [g] (DIN / IEC , Hz) witching cycles min million Operating temperature [ C] edium temperature [ C] torage temperature [ C] EC EN ED:...4 / 8 KV EN HF radiated:... 0 V/m EN Burst:...2 KV EN HF conducted:... 0 V *Encreased protection (IP 67) with accessories (Order no. E30038). 5

16 . etting ranges P rp ΔP min max min max PN4229 PN4227 PN4226 PN4224 PN4223 PN4222 PN422 PN4220 ΔP = increments bar PI * Pa bar PI * Pa bar PI * Pa bar PI Pa bar PI kpa bar PI kpa mbar PI kpa bar inhg kpa

17 2 Factory setting Factory setting P 25% VR rp 23% VR OU Hno COF 0.0 d 0.0 dr 0.0 dap 0.06 di d2 Uni bar / mbar VR = final value of the measuring range User setting 7