MAXUM edition II

General

Measuring ranges (depending on application)

• Thermal conductivity: 0 ... 500 ppm
• Flame ionization: 0 ... 1 ppm

Temperature range in oven

5 ... 225 °C

Temperature control

± 0.02 °C

EMI/RFI design

• CE-compatible; certified according to 2004/108/EC (EMC directive)
• CE-compatible; certified according to 2006/95/EC (low-voltage directive)
• Tested according to EN 61010-1 / IEC 1010-1

Calibration

• Type

Manual or automatic

• Zero value

Automatic baseline correction

• Span

Standard sample cylinder

Design, enclosure

Mounting

• Spacing on left: 460 mm from walls and other devices
• Spacing on right: 460 mm in all cases
• Spacing at front: 654 mm in all cases
• Wall-mounted units
• Center-to-center: 1 120 mm in all cases

Weight

77 kg

Degree of protection

IP54, NEMA 3

Danger class

Standard configurations:

• Certified according to ATEX with air or nitrogen purging for Zones 1 and 2 (EEx pyedmib IIB + H₂)
• 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!

Use in non-hazardous areas requires purging of the electronics area with air or nitrogen.
PDD is not certified for hazardous areas.

Configuration

Oven options

• Single isothermal oven or divided oven with two independent isothermal zones
• Single oven or two independent, fan-free ovens. The dual version has two separate oven areas which operate completely independently.

Detector modules for

thermal conductivity, flame ionization, flame photometry, helium ionization, photo-ionization and electron capture

Number of detector modules

• 1, 2 or 3 in any combination of detector module types for airbath ovens
• 1, or 2 in any combination of detector module types for airless ovens, up to 3 in special configurations

Sampling and column valves

Diaphragm valves, diaphragm piston valves, sliding vane rotary valves or slider valves

Valveless option

"Live" switching

Columns

Packed, micropacked or capillary columns

Regulation of gas supply

Up to 8 electronic pressure regulators and up to 6 mechanical pressure regulators

Electrical characteristics

Power supply

• Single-phase AC, 100 ... 130 V or 195 ... 260 V (selectable), 47 … 63 Hz
• Single oven: max. 14 A
• Dual oven: 2 circuits, max. 14 A each

Gas inlet conditions

Sample flow

5 ... 100 ml/min (application-dependent)

Sample filter size

5 µm

Minimum sample pressure

35 kPa, standard

Maximum sample pressure

2 070 kPa standard, higher pressure as option

Maximum sample temperature

121 °C standard; higher temperature as option

Materials wetted by sample

Stainless steel and Teflon; other materials as option

Liquid injection (valve)

Vaporization temperature

60 ... 400 °C

Injection volume

0.3 ... 9.5  l

Ambient temperature

-20 ... +150 °C

Material of parts wetted by sample

Stainless steel, mat. no. 1.4571, Hastelloy, Monel or special materials

Control pressure

400 ... 600 kPa

Sample pressure

Max. 5 000 hPa, recommended 0.5 ... 1 000 kPa

Connections for pipe

3 mm outer diameter

Measuring response

Sensitivity (depending on application)

± 0.5% of span

Linearity (depending on application)

± 2% of span

Effects of vibrations

Negligible

Repeatability in % of full span between

2 and 100 %: ± 0.5 %;

0.05 and 2 %: ± 1 %;

50 and 500 ppm: ± 2 %;

5 and 50 ppm: ± 3 %;

0.5 and 5 ppm: ± 5 %

Detection limits

See detectors

Influencing variables

Effects of ambient temperature

None with electronic pressure control

Different effects with mechanical pressure control (depending on application)

Electrical inputs and outputs

Standard input and output

• 2 analog outputs;
• 4 digital outputs (1 for output of system faults, 3 are user-configurable);
• 4 digital inputs;
• 1 serial output

Card slots for optional inputs and outputs

2

Input and output cards

AO 8: 8 electrically isolated analog output channels

D IO: 4 digital inputs and 4 digital outputs

A I/O: 2 digital inputs and 2 digital outputs, 2 analog inputs and 2 analog outputs

Digital inputs

Optocoupler with internal power supply (12 … 24 V DC); switchable by dry contacts.

Alternative: switchable by external power supply 12 … 24 V DC (only isolated relay contacts), external power supply, negative connection linked to ground, for a specific digital input.

Digital outputs

Floating changeover contacts, max. contact rating:

1 A with 30 V DC.

Diode bypass suppression should be used for inductive loads.

Analog inputs

-20 ... +20 mA into 50  or

-10 ... +10 V R_in = 1 M , alternate insulation up to 10 V

Analog outputs

0/4 ... 20 mA into max. 750  , common negative pole, electrically isolated from ground; freely-connectable to ground

Termination

Screw terminal for shielded or solid cable with a maximum area of 16 AWG or 1.5 mm²

Climatic conditions

Ambient temperature

-18 ... 50 °C

Gas supply

Instrument air

• At least 350 kPa for units with valves Model 11 or Valco
• At least 825 kPa for units with valves Model 50
• At least 175 kPa for airbath ovens; 85 l/min per oven
• No instrument air for fan-free ovens

Carrier gas

• Nitrogen or helium in compressed gas cylinder, purity 99.998%, or hydrogen with a purity of 99.999% (depending on application).
• Typical consumption quantity: 5 100 l/month per detector module

Combustion gas

• Hydrogen with a purity of 99.999%
• Typical consumption quantity: 2 000 l/month per detector module

Combustion air

• Reference air (< 1 ppm THC, O₂ concentration 20 … 21%). Supply through instrument air with catalytic purification (optional).
• Typical consumption quantity: 26 000 l/month

Corrosion protection

• Purging with dry air to protect the electronics
• Oven with stainless steel lining
• Steel lining painted on outside (epoxy powder coating)

Communication

Serial output

RS 232, RS 485

Ethernet

Standard 10BaseT Ethernet with RJ 45 connectors