| upply voltage                                        GCM – 40N–40–_–I GCM – 40N–40–_–U
 GCM – 40N–40–_–CAN
 | 9 ... 30 V DC 12 ... 30 V DC
 9 ... 30 V DC
 | 
        
            | Type of Output                                       GCM – 40N–40–_–I GCM – 40N–40–_–U
 GCM – 40N–40–_–CAN
 | 4 ... 20 mA (Limits 3,9 ... 20,5 mA) 0 ... 10 V (Limits 0 ... 10,2 V)
 Protocol CAN SAE j1939 (FMS)
 | 
        
            | Current consumption                            GCM – 40N–40–_–I GCM – 40N–40–_–U
 GCM – 40N–40–_–CAN
 | 3,75 ... 20,5 mA Max. 5 mA
 Typ. 10 mA (Max. 16 mA)
 | 
        
            | Load resistance                                       GCM – 40N–40–_–I GCM – 40N–40–_–U
 | Rz ≤ (U - 9) / 20,5 [kΩ; V] Rz ≥ 5 kΩ
 | 
        
            | Nolinearity | Max. 1 % | 
        
            | Temperature error | Max. 0,05 % / K | 
        
            | Voltage error | Max. 0,3 μA/V | 
        
            | Internal resistance / Electric strength (Electrode – Housing) | 1 MΩ / 200 V DC | 
        
            | Coupling capacity /                                 GCM – 40N–40–_–I / Electric strength                                    GCM – 40N–40–_–U
 (Housing – Supply leads)                        GCM – 40N–40–_–CAN
 
 | 91 nF / 500 V DC 50 nF / 500 V DC
 49 nF / 500 V DC
 | 
        
            | Coupling capacity / Electric strength (Electrode – Supply leads) | 47 nF / 500 V DC | 
        
            | Protection class | IP 68 | 
        
            | Ambient temperature range | - 40 ... +85 °C | 
        
            | Cable                                                        GCM – 40N–40–_–I GCM – 40N–40–_–U
 GCM – 40N–40–_–CAN
 | PUR 2x1 mm2 PUR 3x0,75 mm2
 PUR 2x2x0,25 mm2, shielded
 | 
        
            | Process connection                                GCM – 40N–40–F5–_ GCM – 40N–40–G–_
 | Flange with 5 holes Thread G 1“
 | 
        
            | Cable gland                                             GCM – 40N–40–_–_–V GCM – 40N–40–_–_–H
 | cable gland with spiral relief cable gland for protective hose (AD 10,0)
 | 
        
            | Weight (exclude electrode) | Approx. 0,3 kg |