Pressure switches, Transducers, Pressure indicators Series PM, Series TRP, Series 2950
Series PM: adjustable-diaphragm pressure switches,
with setting visual scale, with exchange contacts
Series TRP: electro-pneumatic transducers
Series 2950: pressure indicators, ports M5
with setting visual scale, with exchange contacts
Series TRP: electro-pneumatic transducers
Series 2950: pressure indicators, ports M5
Series PM diaphragm pressure switches are available with NC (normally closed) contacts and with NO (normally open) contacts.
Series PM681 pressure switches with setting visual scale comply with EN60730 standards and are suitable for signaliing pressure through a normally closed Reed contact.
A regulating screw, which can be adjusted using a small screwdriver, allows the switch to be set to the required pressure.
The calibrated diaphragm enables an electrical signal to be generated or inhibited depending on the pressure set.
General Data
| Construction | With adjustable diaphragm |
| Ports | R1/8, G1/4 (Serie PM) Tube 4/2 (Series TRP) M5 (Series 2950) |
| Mounting | Using thread in body |
| Max. nr pulses / minute | 200 |
| Pressure | 1 ÷ 10 bar max. |
| Working temperature | -5°C ÷ +60°C |
| Max. power | 100 VA |
| Voltage | 220 V |
| Isolation voltage | 1500 V |
| Max current | 0,5 A |
| Pressure switches protection class | IP40 (Mod. PM681-1, PM681-3) IP54 (Mod. PM11-NC, PM11-NA) IP65 (Mod. PM11-SC) |
| Certifications | I M1 Ex ia 1 II 1G Ex ia IIC TX II 1D EX ia III TX°C IEC EN 60079-11 SAFETY PARAMETERS Ui= 20V; Ii=0.2A; Pi=1W; Li≈0 μH; Ci≈0 μF UL 508, CAN/CSA C22.2.NO.14-13 OX1: cleaning according to ASTM G-93 Non-volatile residue less than 550 mg/m2 |
