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SA Instrumentation & Control Buyers' Guide

 

Differential pressure switches for air conditioning and ventilation
July 2017, Pressure Measurement & Control


Modern mechanical pressure switches have come a long way in helping air conditioning and ventilation applications. A good example is the SCH-PSB differential pressure switch manufactured by Kobold. Differential pressure switches have quick response, high resolution and are maintenance-free, thus offering many features at a reasonable price.

Switching ranges for differential pressures from 20 to 1000 Pascal are available. The scale of the dials is labelled in Pascal. The electrical rating of the standard version is max. 1,0 A / 250 VAC. The cover provides an IP54 protection against splashes.

Practically, it is possible to rotate the cable gland by 120° steps to the base so that the connecting cable can be taken out to offset pressure port. The electrical connection is established by AMP flat plug 6,3 x 0,8 according to DIN 46244 or, alternatively, plug-on screw terminals for direct connection to open cable ends. The nozzles of the pressure port are provided for 6 mm hoses. The PA-Housing is 85 mm in diameter and is 58 mm high. Standard screws with 8 mm head size fit in the moulded notches. The proven mounting brackets made of metal and hose connector sets are part of an extensive range of accessories.

Fields of application include monitoring air filters, ventilators, industrial cooling air circuits and flow in ventilation ducts; overheating protection for fan heaters; controlling air and fire-protection flaps, and frost protection for heat exchangers.

For more information contact Instrotech, +27 (0)10 595 1831, sales@instrotech.co.za, www.instrotech.co.za


Credit(s)
Supplied By: Instrotech
Tel: +27 11 462 1920
Fax: +27 11 462 1958
Email: sales@instrotech.co.za
www: www.instrotech.co.za
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Further reading:

  • New hygienic adaptor system
    July 2017, Yokogawa South Africa, Pressure Measurement & Control
    Yokogawa has extended its lineup of DPharp EJA series differential pressure/pressure transmitters with the EJAC60E hygienic adaptor system. This consists of the EJA560E hygienic gauge pressure transmitter ...
  • Portable pressure measurement
    July 2017, Instrotech, Pressure Measurement & Control
    Kobold has on offer the highly precise HND-P121/P231 to HND-P127 pressure measuring devices with integrated pressure sensors. They have two pressure measurement inputs on the top of the housing that are ...
  • Stainless steel submersible pressure transmitters
    June 2017, ifm Electronic RSA, Pressure Measurement & Control
    The PS series from ifm electronic are submersible pressure transmitters used for level measurement in containers, tanks, wells, flowing water, bore holes and wastewater plants. The accuracy of 0,5% and ...
  • Absolute pressure transmitter with different ranges
    June 2017, ifm Electronic RSA, Pressure Measurement & Control
    ifm has added absolute pressure sensors to its versatile portfolio in the pressure sensor range. The new PT05 series with robust metal measuring cell, G 1/4 process connection, M12 connector and analog ...
  • Robust pressure-sensing transmitters
    June 2017, Pressure Measurement & Control
    The TPS30 series compact-sized pressure transmitters from Autonics feature robust builds with 316L stainless steel diaphragm, allowing measurement of high or low pressure in both high and low temperature ...
  • Inductive flowmeter for conductive fluids
    May 2017, Instrotech, Flow Measurement & Control
    Kobold has introduced a newly-developed electromagnetic inductive flowmeter for conductive fluids – the model DMH with a standard accuracy of 0,3% of reading. It is used specifically for the measurement ...
  • Secure liquid level detection
    May 2017, Instrotech, Level Measurement & Control
    Kobold has capacitive level indicators, type NMC, specifically designed to measure liquid levels in tanks. They consist of a measuring probe and a connecting head with a plug-in evaluation module. Depending ...
  • Display up to four machine camera images in one screen
    May 2017, ifm Electronic RSA, Pressure Measurement & Control
    The multi-view box has been designed for use in mobile machines in harsh environments. It features four camera inputs. Depending on the requirements, 1, 2 or 4 camera images can be selected simultaneously ...
  • Extreme performance pressure gauge
    Africa Automation Fair 2017 Preview, Pressure Measurement & Control
    The Extreme Performance process pressure gauge (EPG) has a Bourdon tube coupled with a German movement that delivers unparalleled performance in demanding conditions in process industries and other hydraulic ...
  • Calibration of weighing systems
    Africa Automation Fair 2017 Preview, Instrotech, Maintenance, Test & Measurement, Calibration
    Calog calibrators, load cells and load cell transmitters are used to manage and calibrate weighing systems. This ensures the right recipe is used to brew beer or mix cement. They are used extensively ...
  • Fuel level monitor
    Africa Automation Fair 2017 Preview, Instrotech, Level Measurement & Control
    Calog panel meters can monitor the fuel levels of tugboats to ensure harbours are run at optimised performance. They are complemented with the Ex-rated Keller submersible level transmitters and are on ...
  • Weighing system calibrator
    Africa Automation Fair 2017 Preview, Instrotech, Maintenance, Test & Measurement, Calibration
    Calog calibrators, load cells and load cell transmitters are used to manage and calibrate weighing systems. This ensures the right recipe is used to brew beer or mix cement. They are used extensively ...

 
 
         
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