Universal electronic ∆p–two-point regulator with programmable ∆p measuring range, which the user can programme as required within the stated measuring span of a group. With up to 4 relay outputs and up to 6 adjustable Dp switching points: With 2x REGULATORS, 1x max. limiting value and 1x min, 1x subsequent cleaning t-REGULATOR, 1x RELAY and 10linear analogue outputs,which are directly or inversely programmable. Universalon supplyvoltages: Can be connected to 110-120 VAC, 230-240 VAC and 24 VDC. Small IP65 housing in shapely design.

Examples : Ventilation and air-conditioning units, clean room technology, filter control, fill level control and regulation, flow detection system, etc.

The differential pressure (+ P1↑­ und P2↓ -), the positive pressure (+ P1↑­) or the negative pressure (P2↓ -) is measured via the gauge connections and displayed on the bright red display. The target values can also be displayed and thus set precisely.

The two ∆p switching points for the regulator, CtL(REGULATORmin) and CtH(REGULATORmax) as well as the Dp switching points ALx(ALARMmin)and AHx (ALARM max)are set via the keys. The ALARM switching points are for signalling an alarm in the case of a shortfall or excess on pressure of the Dp values in the control range. After switching on the power supply, the switching points can be suppressed for an adjustable time, in order to prevent a false alarm.

A further switching point ∆p-ICCcan, for filter units for example, activate a programmable subsequent cleaning time rCA for one of the relays (adjustable) in the case of deactivated process gas. If the current differential pressure falls short of the switching point ICC, the set relay is activated for a programmable duration of 0-240 min and a subsequent cleaning via a filter control, for example from our device series TRANS-FILTER-SCANNER TFS*, is made possible. The relay output RELAY can, in combination with a filter control, be active for the duration of the subsequent cleaning or even longer for a so-called overrun period and e.g. control discharge organs or e.g. be used as another ALARM limiting value. For all ∆p switching points, a time period of between 3 s and 999 s can be programmed for which the corresponding relay then maintains the reported condition after activation. This time function enables, for example, the direct controlling of actuating elements with longer transfer times or, for example, also the acoustic signal for the period of a set time. A further variation comprises the programming of a response delay period for all relay outputs. With this, only short limits exceeded or shortfalls can be suppressed. All switching conditions are signalised optically via the LEDs, see the picture above. All relays can be manually controlled via a test programme for test purposes.

For air-related applications with the ever-present turbulences, a programmable ∆p damping of the switching points and the display is a necessary, functional advantage. 10 linear short circuit protected analogue outputs 0-5V,0-10V,2-10V,0-20mA,4-20mA or inversely : 5-0V,10-0V,10-2V,20-0mA and 20-4mA are programmable and are available for pressure-proportional output signal for further process controls.

Features

• Universal electrical connection for 230~240 VAC and 110-120 VAC and 24 VDC in one device
• Pressure sensor highly overloadable and temperature compensated with manualzero pointcalibration,with ZPC*also automatic
• 9 device groups with user-programmable ∆p measuring range within the measuring span of one group :
  • Group1: 0- 0.4 mbar to 0- 2 mbar
  • Group2: 0- 1 mbar to 0- 5 mbar
  • Group3: 0- 2 mbar to 0- 10 mbar
  • Group4: 0- 10 mbar to 0- 50 mbar
  • Group5: 0- 20 mbar to 0- 100 mbar
  • Group6: 0- 100 mbar to 0- 500 mbar
  • Group7: 0- 200 mbar to 0- 1000 mbar
  • Group8: 0- 1 bar to 0- 5 bar
  • Group9: 0- 2 bar to 0- 10 bar
• Short circuit protected analogue output 0-5V,0-10V,2-10V,0-20mA, 4-20 mA programmable, also inversely e.g. 20-4mA
• Programmable ∆p damping : Approx.1s to 240s