ADC MGA3000 series - 7 Electrical Specifications; Power Supply; Analogue Outputs; When Set for Voltage Output

7. ELECTRICAL SPECIFICATIONS
For specifications relating to gas measurements, refer to the Certificate of Conformity.
7.1 Power Supply
Voltage: 240V ±10% ]
220V ±10% ] as set on rear panel
110V ±10% ]
Frequency: 47 – 63Hz
Maximum Power Consumption: 120VA
7.2 Analogue Outputs
Outputs are not isolated.
7.2.1 When set for voltage output
Output at zero gas less than ± 10mV
Output at full scale: 1V ]
5V ] as set using internal links (see section 2.5.1)
10V ]
Load: 10kΩ minimum load resistance
Outputs are protected against short circuits for short periods; however application of voltages
may cause immediate damage.
7.2.2 When set for current output
Output at zero gas: 4mA ± 1%
Output at full scale: 20mA ± 1%
Source resistance: > 1MΩ
Maximum loop voltage: 25V
Voltage drop (at 20mA) 0.5V maximum
Current output sink is connected to chassis (nominally ground).
7.3 Alarm (Trip) Contacts
Contact rating: 1A (non inductive)
Voltage rating: 30V DC / AC peak
Max. Voltage with respect to chassis: 30V DC / AC peak
Auxiliary 24V output: 24V DC ± 20% at 500mA maximum.
Auxiliary supply has negative rail connected to chassis. See below table: