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Sampling and column valves
Valveless option
Column options
Regulation of gas supply
Table 3-10
Enclosure Protection
Ingress protection
Explosion protection
EMI/RFI design
Table 3-11
Electrical characteristics
Power supply
Table 3-12
Electrical inputs and outputs
Standard input and output
Card slots for optional inputs and
outputs via internal I
C bus
Input and output cards
Maxum II Reference Manual
Manual, 7/2017, 2000596-001
● Diaphragm valves
● Diaphragm piston valves
● Sliding vane rotary valves
● Slider valves
● Liquid injection valve
Live switching
Packed, micropacked or capillary columns
Up to 8 electronic pressure regulator channels and up to 6 mechanical pressure reg‐
IP54, Category 2
● Standard configurations:
● Certified according to ATEX with air or nitrogen purging for Zone 1 (II2G Ex ... IIB
+ H2 ... Gb)
● Suitable for use in non-hazardous areas and with non-dangerous conditions
● Certified according to CSA C/US for use in Class 1, Div. 1, Groups B, C, D with air
or nitrogen purging
● Certified according to CSA C/US for use in Class 1, Div. 2, Groups B, C, D.
Important note! Purging of the electronics area with instrument air or nitrogen is rec‐
ommended to maintain optimum measurement performance. The PDD is not certified
for hazardous areas.
● CE-compatible; in conformity with 2014/30/EU (EMC directive)
● CE-compatible; in conformity with 2014/35/EU (low-voltage directive)
● Tested according to EN 61010-1 / IEC 61010-1
● Single-phase AC, 100 to 130 V or 195 to 260 V (selectable), 47 to 63 Hz
● Single oven: max. 1800 VA
● Dual oven: 2 circuits, max. 1800 VA each
● 2 analog outputs
● 4 digital outputs (1 for output of system faults, 3 are user-configurable)
● 4 digital inputs;
● I2C_AIO: 8 analog outputs, 8 analog inputs, 2 digital inputs
● I2C_DIO: 6 digital inputs and 8 digital outputs
● I2C_ADIO: 4 digital inputs and 4 digital outputs, 4 analog inputs and 4 analog


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