Compressed Air Instrumentation

VA 400 with DS 300

DS 300 display unit features

These are the instruments that can be used on this display

• Compressed air flow measurement that includes the ability to provide a totalizer function and pipeline velocity.
• Compressed air dew point monitoring which also  provides c/air temperature data.
• Air pressure, or vacuum measurement
• Power (amps) measurement

 The above is a our standard offering, other instruments can be used, please see price summary for the actual supply specification

The DS 300 provides operators of compressors & air dryers a comprehensive overview of the system performance from one wall, or panel, instrument. Data can be recorded in a large variety of units e.g. cfm or m³/min, deg C or F to identify a few!

The DS300  can be  supplied with up to four probes or sensors as shown above.   The CS software allows for alarm set points to be installed and  changed  for alarm and alert  functions. The display screen turns from grey to flashing red when a set point alarm has been reached to warn operators of a possible problem.  

The DS 300 has the ability to provide outputs in a 4-20mA, Modbus, Profibus or RS-485.  The optional data logger allows for ongoing (rollover) safe data storage for up to 1,000,000 measurements. Data is transferred via a USB port on the fascia panel. Data can also  be exported in an Excel format

The flow probes can also be used to measure vacuum systems. Absolute pressure sensors are available.  We also have the ability to measure high pressure systems up to 340 bar 

A wide variety of dew point probes are available with ranges from -80°C to + 50°C.  probes are also available in explosion proof formats. Please make any special needs known to us prior to order.  All probes and sensor are sold with factory certificates; please advise us of your certification needs prior to order. We offer a 4 day South African re-calibration service at competitive rates

Dew Point Sensor FA 410 for refrigeration dryers (-20 …+50°Ctd)

Special features of the FA 410 Dew Point Sensor

• System ready for plugin: everything completely wired
• No time-consuming studying of the instruction manual
• 2 alarm contacts (230 VAC, 3 A) pre- and main-alarm freely adjustable
• 4...20 mA analogue output
• Option alarm: Red flashing
• Parallel indication % RH, °C, °C_td

If gases escape through leaks ultrasonic noises are generated. By means of the LD 300 leakages can be detected in the ultrasonic range even from distances of several meters. LD 300 transforms the inaudible signals into a frequency which can be identified by means of the provided sound-proof headset. In depressurized systems an ultrasonic tone generator can be used of which the signal travels through smallest openings.

Cost saving 

The thickness meter CS 0495 enables a quick, easy and accurate measurement of the wall thickness of pipes. So the
determination of the inner diameter becomes very easy.

Flow direction switch for compressed air systems

The new thermal flow direction switch VA 409 with direction indication serves for determination of the flow direction of compressed air and gases especially in closed circular pipelines.

By means of VA 409 with flow direction indication the flow direction of the compressed air can be determined quickly and safely. Compared with the former mechanical paddle flow switches VA 409 is able to detect even the smallest changes in the flow direction quickly and without any mechanical movement.

The direction information in form of a potential-free contact (normally closed max. 60 VDC, 0.5 A) is transferred to the
consumption sensors VA 400/VA 420 or to a separate building management system (mbs). Two LEDs show the flow direction.

In connection with 2 consumption sensors VA 400/VA 420 incoming and outflowing compressed air in closed circular pipelines can be measured precisely.

Special features

• detects smallest changes < 0.1 m/s referred to 20 °C and 1000 mbar
• no mechanical wear parts
• easy installation under pressure 

With the Atex approval for Zone 1 the established dew point measuring instruments FA 300-2 can now be used in areas of the industry as well.

FA 300-2 Ex Dew Point Meter may only be used in connection with approved Ex-rated power supplies or safety barriers or galvanic separating elements with max.: 

UO = 30 V max.
IO = 100 mA max.
P0 = 1 W max.

Special features of the FA 300-2 ExDew Point Meter

• Robust design
• Pressure-tight up to 300 bar
• Long-term stable humidity sensor, approved for years
• 4...20 mA analogue output, in 2-wire system
• Further parameters adjustable via software: % RH, g/m³, mg/m³, ppm V/V, g/kg
• CS Service Software for data storage and calibration (no approval for explosive areas)

The portable dew point meter DP 300 is the ideal instrument for service and is supplied in a convenient case.
Thanks to the internal rechargeable battery it measures quickly and reliably for a duration of up to 15 hours.

The set includes everything that you need for an uncomplicated dew point measurement.

The DP 300 portable dew point meter is a user friendly instrument that provides quick answers to end users that require dew point information from a variety of locations or dryers within a plant

The unit provide dew point, relative humidity and air temperature from an LCD display.  The meter can be re-calibrated using CS software and Lithium chloride 11.3 % RH calibration chamber supplied with the set.

v  Dew point measurement from           -80 deg C to +50 deg C dew point

v  Temperature measurement from        -20 to + 70 deg C

v  Relative humidity from                         0 to 100%

v  Pressure range                                    0 to 50 bar as standard with higher pressure ranges available

v  Mains independent                              15 hrs, battery charger included with set

v  PC connection set                               For data recording including RS 232 power supply  (optional)

v  CS software                                        Optional

The standard set consists of;

v  DP 300 measuring instrument

v  Standard measuring chamber

v  Diffusion tight Teflon cable 1m long

v Batterycharger power pack 220 volt to 24 volt DC

v  Control and calibration,  lithium chloride test cell, 11.3 %

v  Padded transport case

Other optional equipment is available for high pressure an ambient dew point reading

Special features

• System ready for plugin: everything completely wired
• No time-consuming studying of the instruction manual
• 2 alarm contacts (230 VAC, 3 A) pre- and main-alarm freely adjustable
• 4...20 mA analogue output
• Option alarm: Red flashing
• Parallel indication % RH, °C, °C_td

The dew point sensor FA 410 is extremely long-term stable and can be installed and removed quickly and easily under pressure by means of the screwable measuring chamber including quick-coupling. The dew point set is supplied ready for plug-in, i. e. everything is completely wired. The alarm values can be freely adjusted.

Special features

• System ready for plug-in: Everything completely wired
• No time-consuming studying of the instruction manual
• 2 alarm contacts (230 VAC, 3 A) pre- and main alarm freely adjustable
• 4...20 mA analogue output
• Option alarm unit:
• Buzzer and continuous red light.

The measuring instrument DS 300 mobile enables the analysis of compressed air stations. 2 clamp-on ammeters measure the current consumption of every single compressor. Optionally also 2 pressure sensors, temperature sensors or any other analogue sensors can be connected.

In addition, the DS 300 mobile measures the discharged compressed air in m³/h, m³ and the dew point temperature in °C_td at the same time.

The integrated data logger stores up to 1 million measured values.

The CS analysis software enables the graphical and statistical evaluation of the stored data at the PC.
From the stored current values it is possible to calculate the costs in € for the energy consumption (kWh) as well as the load and idle times of every single compressor including switch-on/switch-off cycles.

For documentation of the measured values the user gets a DIN a4 graphic printout for each compressor in a day view and in a week view at the touch of a button.