IFM Electronic PG2893, PG2894, PG2895, PG2896, PG2897 Operating Instructions Manual

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UK
UK
Operating instructions Electronic manometer
PG28xx
704922 / 01 11 / 2010
4
2 Safety instructions
Please read this document prior to set-up of 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 can occur.
Check the compatibility of the product materials ( 12 Technical data) with the media to be measured in all applications.
Use in gases at pressures > 25 bar only after contacting the manufacturer ifm.
The unit must only be installed in a process connection for G1 sealing cones (e.g. ifm welding adapter, order no. E30013). If the unit is installed in a 1“ thread without sealing cone, this will lead to seal failure. Please use the PG27xx series in these applications.
The device shall be supplied from an isolating transformer having a secondary Listed fuse rated either
a) max 5 amps for voltages 0~20 Vrms (0~28.3 Vp) or
b) 100/Vp for voltages of 20~30 Vrms (28.3~42.4 Vp).
3 Functions and features
The unit monitors the system pressure in a plant.
3.1 Applications
Type of pressure: relative pressure
Order no.
Measuring range
(in brackets:
extended display range)
Permissible
overpressure
Bursting
pressure
bar PSI bar PSI bar PSI PG2893 -1...25 (40) -14.4...362.7 (580.2) 100 1450 350 5070 PG2894 -1...10 (16) -14.5...145 (232) 50 725 150 2175 PG2895 -1...4 (6.4) -14.5...58 (92.8) 30 435 100 1450 PG2896 -0.124...2.5 (4) -1.8...36.27 (58.02) 20 290 50 725 PG2897 -0.05...1 (1.6) -0.73...14.5 (23.21) 10 145 30 435 PG2899 -1...1 (1.6) -14.5...14.5 (23.20) 10 145 30 435
mbar inH2O bar PSI bar PSI PG2898 -12.4...250 (400) -5.0...100.4 (160.6) 10 145 30 435 PG2889 -5...100 (160) -2.0...40.15 (64.25) 4 58 30 435
5
UK
Avoid static and dynamic overpressure exceeding the given overload pres­sure 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 may be destroyed. ATTENTION: risk of injury! Use in gases at pressures > 25 bar only after contacting the manufacturer ifm.
The unit can be operated at media temperatures up to 145°C (max. 1h) / 125°C (permanently). Therefore it is suitable for all standard cleaning and sterilisation processes (CIP, SIP).
4 Function
4.1 Processing of the measured signals
The unit generates 2 output signals according to the parameter settings.
OUT1 • Switching signal for system pressure limit value. OUT2 • Analogue signal (4...20 mA, 20...4 mA).
The unit displays the current system pressure.
Analogue display: circular scale with pointer Digital display (alphanumeric display, 4 digits). In addition, an LED ring with one of the following display options is available:
- Trend display (rising pressure / falling pressure).
- Display of set point and reset point.
- Maximum value memory and minimum value memory.
- Display of pulsating signals and pressure peaks.
The display function is set via the menu 9.2 / LED.
4.2 Pressure monitoring / switching function
OUT1 changes its switching state if it is above or below the set switching limits (SP1, rP1). The following switching functions can be selected:
Hysteresis function / normally open: [OU1] = [Hno] ( fig. 1).
Hysteresis function / normally closed: [OU1] = [Hnc] ( fig. 1). First the set point (SP1) is set, then the reset point (rP1) with the requested difference.
Window function / normally open: [OU1] = [Fno] ( fig. 2).
Window function / normally closed: [OU1] = [Fnc] ( fig. 2). The width of the window can be set by means of the difference between SP1 and rP1. SP1 = upper value, rP1 = lower value.
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