HITECH INSTRUMENTS technical datasheet A member of the MTL Instruments Group K1550 series Katharometers Thermal conductivity analysers for binary gas mixtures • Measured gases include: H2, He, Ar, CO2, SF6 Kr, Ne and Xe • Proven technology from the katharometer experts • Hazardous area options • Corrosive gas sensor options • Non-depleting remote sensor • Fixed and variable compensation options Applications • Hydrogen analysis • Syngas • Gasification • Helium recovery • Gas mixing • Nitriding furnaces • SF6 in switchgear • Fuel cell research The K1550 series analysers are ideal for measuring the % level of one gas in a binary or pseudo-binary mixture. For example, air is composed of many gases but in known, fixed ratios, therefore hydrogen in air is a pseudobinary mixture and can be measured with the K1550. Different sample conditioning systems are available, standard or bespoke, according to the process conditions. For corrosive gases a variety of sensor assemblies and fittings are available to suit the specific gas. Hitech are prepared to recommend complete systems on receipt of full gas stream specifications. Hydrogen, helium, dissociated ammonia, sulphur hexafluoride and noble gases such as krypton and xenon are all well suited to this technique. In particular, katharometers are well suited to gases that have no dedicated sensor and therefore provide cost effective analysis solutions. For hazardous area applications the sensor may be mounted remotely in the hazardous area and connected through an MTL zener barrier to the electronics unit in a safe area. Alternatively, the electronics unit can be supplied in an EExd enclosure, with a remote keypad for non-intrusive calibration, for full hazardous area use. A compensation input is available as an option, either fixed or variable, via a 4-20 mA input. This extends the capability of the analyser to measure in more complex mixtures. The KG1550 series also features an integral oxygen sensor. All versions are available with a 0 – 100% range. 0 – 20% and 80 – 100% ranges are also available, depending on the measured gas and the background. Hydrogen analysers can also be supplied with a 0 – 5% range. Multi-range instruments are sometimes available on request.

ORDERING INFORMATION Ranges available (Depends upon measured/background gas) 0 - 5%, for most hydrogen ranges Consult Hitech for gas type and range ±2% f.s.d. depending upon span and gas Sample flow Sample pressure Nominally atmospheric, set by vent Sample connections Inlet and outlet: Captive seal (or 6mm) outside diameter tube Analogue output Outputs (alarm) Two alarms: each user-configurable to Relay outputs normally energised Ambient operating temperature range Storage temperature range Supply Voltage Power consumption Electronics unit Panel mounting with two clamps Remote sensor unit Wall/...