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 4–20mA to Catalytic Input Converter 04200-A-1201

Operating Instructions

Summary of Contents for 04200-A-1201

Page 1: ...4 20mA to Catalytic Input Converter 04200 A 1201 Operating Instructions ...

Page 2: ...y 3 Do not expose to rain or moisture IMPORTANT Zellweger Analytics have endevoured to ensure that this 4 20mA to Catalytic Input Converter is compatible with standard bridge input circuits Since Zellweger Analytics however have no control or full knowledge of the designe of all bridge input control cards should difficulties be experienced using the converter please contact Zellweger Analytics or ...

Page 3: ...ction Page 1 INTRODUCTION 5 2 INSTALLATION 7 2 1 Connections 7 2 2 Link Settings 7 2 3 Installing 8 2 4 Bridge Supply Adjustments 9 3 ORDERING INFORMATION 11 4 SPECIFICATION 11 FIGURES Figure Page 1 Signal Converter Module 4 20mA 5 2 Interconnecting Diagram 6 3 Link Locations 9 ...

Page 4: ...4 MAN0488 PM6 Issue 02 4 20mA to Catalytic Converter 04200 M 5012 ...

Page 5: ...Optima Infrared Detector the Signal Converter Module can equally be used to interface between other types of 4 20mA output detectors and a bridge input control system The module allows users of an existing installation of catalytic detectors to retrofit them with Searchpoint Optima Infrared Detectors without the need to replace field cables or the control system Figure 1 Signal Converter Module 62...

Page 6: ...hich would normally be used to power the catalytic sensor The module contains three user configured links which must be set prior to commissioning These links set the ground reference for the control current and the polarity of the mV output signal The position of these links are shown in Figure 3 Figure 2 Interconnecting Diagram 0V 24V Red 0V Black 4 20mA White G H A B D C 24V NS 01 S Most ve Cen...

Page 7: ...ws a block diagram of these connections while the location of these terminals are shown in Figure 3 2 2 LINK SETTINGS CAUTION Never apply power to the module with BOTH LK1 and LK2 fitted Only fit ONE of these two links There are three links on the module which need to be configured before commissioning the system These are LK1 When fitted sets the input signal reference to the supply 0V LK2 When f...

Page 8: ...V line for the Searchpoint Optima or 4 20mA device is common with the control system supply or is derived from the control system control card 7 Remove the Signal Converter Module front cover by prising the cover off with a screwdriver 8 Locate the links LK1 LK2 and LK3 and set the links to the required positions as indicated below Control Card Make and Model LK1 LK2 LK3 Supply Adjust GP Elliot Ty...

Page 9: ...2 Connect the Control Card to the control system by means of a suitable extension lead This will automatically reconnect power to the Searchpoint Optima and Signal Converter Module 3 Using a DVM and with 0mA applied to the converter measure the dc voltage between the Signal Converter Module terminals C and D which should be between 2 9V and 3 0V 4 If the DVM readings is outside the 2 9V to 3 0V li...

Page 10: ...wing the procedure as detailed in the Searchpoint Optima Manual either a Apply a known concentration of gas to the Searchpoint Optima or b Using the Optima Hand Held Interrogator inject a signal of between 4 and 20mA 12mA 50 fsd 10 Adjust the Control Card SPAN adjustment to set the Control Card display to the correct reading Notes 1 If the display shows a negative reading during Steps 8 and 9 chan...

Page 11: ...pan Drift Less than 1 fsd Response time 200ms EMC Protection Conforms to BS EN 50082 1 1992 BS EN 50081 1 1992 Additional radiated immunity test level of 10V m Complies with 89 336 EEC 93 68 EEC d Operating Temperature 10O C to 40O C Storage Temperature 40O C to 75O C Weight 44 grams Connections Screw down terminals for up to 2 5mm2 stranded conductors Power Supply 2 9V to 3 0V at 200mA to 300mA D...

Page 12: ...ng the details below UK Office Keison Products P O Box 2124 Chelmsford Essex CM1 3UP England Tel 44 0 330 088 0560 Fax 44 0 1245 808399 Email sales keison co uk Please note Product designs and specifications are subject to change without notice The user is responsible for determining the suitability of this product ...

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