PRESSURE TRANSDUCERS Keeping pressure under control

Transcription

1 PRESSURE TRANSDUCERS Keeping pressure under control AN ISO 9000 COMPANY

2 Pressure Transducers Bailey & Mackey have been manufacturing high quality pressure instruments for over 75 years. The product range has been extended over this period and we now manufacture Pressure Gauges, Temperature Gauges, Pressure Switches and Pressure Transducers. Our products satisfy most pressure and temperature sensing applications in many industrial markets including, Aerospace, Automotive, Chemical, Marine, Medical, Water, Waste, Fire, Food, Heating and Ventilating, and General Industries. In fact we have products which cover almost every pressure sensing application. Expertise in pressure sensing technology enables us to manufacture to the highest standard of quality and reliability. Our quality management system, which is approved by B. S. I. Quality assurance to BS EN 9001, ensures that all products have been correctly assembled and tested prior to despatch to our customers. Bailey & Mackey aims to lead its chosen sectors of the Pressure Gauge, Temperature Gauge, Pressure Switch and Pressure Transducer Industry through excellence in customer service and product quality. Bailey & Mackey Pressure control experience and innovation for over 75 years

3 Pressure Transducers Contents Type Description Page Bailey & Mackey pressure transducers are divided into two groups each being based on a different measuring technology. The first group are: Piezo-Resistive Transducers which use the voltage that is generated when a semi-conductor beam is deflected by an applied pressure, this voltage is then amplified which in turn gives a voltage or milli-amp output. These devices give greater accuracies than the Hall Effect devices and we manufacture this type of transducer from ±0.1% to ±0.5% depending on the application. The second group are: Hall Effect Transducers which uses a magnet and a flux strength device to measure the deflection of a diaphragm under pressure and give an analogue signal to an amplifier which in turn gives a voltage or milli-amp output. These devices are low cost and have a similar accuracy to a pressure gauge. Both types of transducer outlined above have CE marked versions to EN & EN for EMC emission and immunity. Corrosion resistant materials are available for both the Hall Effect and the Piezo-resistive types to enable them to be used on most fluids. Bailey & Mackey Transducers can be modified to make them more suitable for the application on which they are to be used, please contact our sales office for further assistance. No maintenance is required with the pressure transducers in this catalogue but periodic calibration checks should be made and any re-calibration adjustments made to ensure optimum performance. A range of instruments calibrated to correspond with the pressure transducers are also illustrated in this catalogue. 481 Piezo-Resistive Transducers V & 4 20 ma output devices Mono Pressures from vacuum to 20 bar 482 Piezo-Resistive d.p. Transducers V & 4 20mA output devices Differential Pressures from vacuum to 10 bar 2200 Piezo-Resistive Transducers 6 & V & 4 20 ma output devices Mono Pressures from vacuum to 200 bar Gauge & Absolute Diaphragm seal, High temperature and Flange mounted versions Hall Effect Transducers V & 4 20 ma output devices Mono Pressures from vacuum to 25 bar 4000 Hall Effect d.p. Transducers V & 4 20 ma output devices Differential Pressures from vacuum to 25 bar 4101 Potentiometric Transducers 16 Voltage output device Mono Pressures from 25 bar to 700 bar 73PT Potentiometric Transducers 17 Voltage & current output devices Mono Pressures from vacuum to 600 bar 70PT Potentiometric Transducers 18 Voltage & current output devices Mono Pressures from 2.5 bar to 40 bar 69PT Potentiometric d.p.transducers 19 Voltage & current output devices Differential Pressures from 2.5 bar to 6 bar Displays & Power Supplies 20 Chemical Compatibilities 24 Installation Instructions & Conversion Factors 25 1

4 Series 400 Pressure Transducers This series of miniature pressure transducers have a piezo-resistive sensor and a unique conductive seal that eliminates internal wire bonding thus enhancing reliability. Zero and full scale adjusters are provided under the top cover. They are ideal for use in areas requiring exact pressure measurement. low hysteresis and long term stability. For all applications where air. oil or water is to be monitored. Features 5 Piezo-resistive sensor 5 Ranges from full vacuum to 20 bar 5 Type 481A for 12/24V d.c. input, 4-20mA output 5 Type 481B for 24V a.c/d.c. input, 0-10V d.c. output 5 Supplied with 1 M flying lead 5 Pressure connection 1/4 bsp parallel male brass 5 CE marked to EN Complete with mounting bracket 5 Enclosure rating IP65 5 Weight 350 grams Mechanical Specifications Electrical Specifications Pressures Pressure Ranges 0 to 35 mbar 0 to 70 mbar 0 to 350 mbar 0 to 1 bar 0 to 2 bar 0 to 7 bar 0 to 17 bar Intermediate ranges to suit application. Proof Pressure 1.5 x FS Performance Accuracy Repeatability Thermal Error 0.25% FS 0.2% FS/Year typical 0.026% FS/ C from 20 C Temperature Range -20 to +80 C Mechanical Configurations Pressure Connection 1/4 bsp male brass Type 481A Input Output Type 481B Input Output 12 to 24V d.c. 4 to 20mA (2 wire) 24V a.c./d.c. 0 to 10V d.c. (3 wire) These transducers must be adequately earthed to meet EN Wetted Parts Compatible with air, water and oil. 2

5 Pressure Transducers Series 400 DIMENSIONS Ø44.5 Ø x Ø (12.7) (22.0) (32.0) 14.0 A/F (TYP.) G1/4 (23.7) WALL FIXING BRACKET TYPICAL WIRING DIAGRAMS Electrical Connections Type 481A: ma Output Red +ve 12 24V d.c. WHITE OUTPUT 4 20mA DRAIN (EARTH) Type 481B: Voltage Output RED 24V a.c./d.c. WHITE OUTPUT 0 10V BLACK COMMON DRAIN (EARTH) 3

6 Series 400 Pressure Transducers This series of miniature differential pressure transducers have a piezoresistive sensor and a unique conductive seal that eliminates internal wire bonding thus enhancing reliability. Zero and full scale adjusters are provided under the top cover. They are ideal for use in areas requiring exact pressure measurement, low hysteresis and long term stability. For all applications where air. oil or water is to be monitored. Features 5 Piezo-resistive sensor 5 Ranges from full vacuum to 20 bar 5 Type 482A for 12/24V d.c. input, 4-20mA output 5 Type 482B for 24V a.c/d.c. input, 0-10V d.c. output 5 Supplied with 1 M flying lead 5 Pressure connection 1/8 bsp parallel female brass 5 CE marked to EN Complete with mounting bracket 5 Enclosure rating IP65 5 Weight 350 grams Mechanical Specifications Electrical Specifications Pressures Pressure Ranges 0 to 35 mbar 0 to 70 mbar 0 to 350 mbar 0 to 1 bar 0 to 2 bar 0 to 7 bar 0 to 17 bar Intermediate ranges to suit application. Proof Pressure Out of Balance Pressure Line Pressure 1.5 x FS 1.5 x FS 34 bar G Performance Accuracy Repeatability Thermal Error 0.25% FS 0.2% FS/Year typical 0.026% FS/ C from 20 C Temperature Range -20 to +80 C Mechanical Configurations Pressure Ports Wetted Parts 1/8 bsp female brass Compatible with air, water and oil. Type 482A Input Output Type 482B Input Output 12 to 24V d.c. 4 to 20mA (2 wire) 24V a.c./d.c. 0 to 10V d.c. (3 wire) These transducers must be adequately earthed to meet EN

7 Pressure Transducers Series 400 DIMENSIONS Ø44.5 Ø A/F (TYP.) x Ø4.20 (22.0) 4.0 (32.0) G1/8 WALL FIXING BRACKET (23.7) (12.7) TYPICAL WIRING DIAGRAMS Electrical Connections Type 482A: ma Output Red +ve 12 24V d.c. WHITE OUTPUT 4 20mA DRAIN (EARTH) Type 482B: Voltage Output RED 24V a.c./d.c. WHITE OUTPUT 0 10V BLACK COMMON DRAIN (EARTH) 5

8 Series 2200 & 2600 Pressure Transducers The 2200 series features stability and accuracy in a variety of enclosure options. The 2600 series extends the packaging options via an all welded stainless steel back end for demanding submersible and industrial applications. The 2200 and the 2600 feature proven CVD sensing technology, an ASIC (amplified units) and modular packaging to provide a sensor line that fits most applications and can easily accommodate specials whilst not sacrificing high performance. Features 5 Gauge, absolutem vacuum and compound pressure models available 5 Submersible, general purpose and wash down enclosures 5 High stability achieved by CVD sensing element 5 Millivolt, voltage and current output models 5 Ranges from vacuum to 400 barg, 0 to 25 bara 5 CE marked to EN and UL approved Mechanical Specifications Electrical Specifications Pressures Pressure Ranges Vacuum to 400 bar Gauge and 0 to 25 bar Absolute Intermediate ranges to suit application. Proof Pressure Performance Accuracy Thermal Error 2 x FS (1.5 x FS for 400 barg) 0.25% FS typical (optional 1.5% FS) 1.5% FS typical (optional 1% FS) Temperature Range -20 to +80 C Long Term Drift 0.2% FS/year Mechanical Configurations Wetted Parts 17-7 PH Stainless Steel Pressure Connection Enclosure Vibration Acceleration Weight See ordering chart 316 ss, 17/7 ph ss 35g peak sinusoidal, 5 to 2KHz 100g steady acceleration in any direction 0.032% FS/g for 1 bar range decreasing logarithmically to % FS/g for 400 bar range Approx 100g (additional cable 75g/m) Millivolt Output Units Output Supply Voltage 100mV ±1mV 10 Vdc (15 Vdc max) regulated Bridge Resistance 4 to 20mA (2 wire) Voltage Output Units Output Supply See ordering chart 1.5V above FS output to 35 Vdc at 6mA Min Load Resistance FS output/2k ohms Current Approx 6mA at 7.5V Consumption output Current Output Units Output 4 20mA (2 wire) Supply Voltage (VS) 7 to 35 Vdc. Above 100 C supply limited to 24 Vdc Supply Sensitivity 0.01% FS/Volt Max Loop Resistance (VS-7) x 50 ohms 6

9 Pressure Transducers Series 2200 & 2600 How to Order Use the bold characters from the chart below to construct a product code 2200 B G A60 01 A 3 U A Series Performance Output A.25%/1.5% B.15%/1.0% A 100mV B 4 20mA C 1 6V Pressure Datumn D 1 11V H 1 5V J V R 0 5V S 0-10V Cable Length See Table 1 A* Absolute G Gauge *Max absolute range is 25 bar. Apparatus Protection Pressure Range bar (see note 3) A A A A A B B B B B C C C C Pressure Range psi (see note 3) F F F G G G G G Pressure Port G H10 0 1,000 H15 0 1,500 H20 0 2,000 H30 0 3,000 H40 0 4,000 H50 0 5,000 H60 0 6, G1/4 External 02 1/4-18 NPT External 03 G1/2 Manometer 04 7/16-20UNF to SAE J G1/4 Ext. Soft Seal Vac = -1 bar 1A0 Vac 0 1A6 Vac 0.6 2A5 Vac 1.5 4A0 Vac 3 6A0 Vac 5 1B0 Vac 9 1B6 Vac 15 2B5 Vac 24 4B0 Vac 39 Vac = -15 psi 1F5 Vac 0 3F0 Vac 15 6F0 Vac 45 1G0 Vac 85 1G5 Vac 135 3G0 Vac 185 3G0 Vac /8-27 NPT External 09 G1/8 Internal 00 G1/4 Internal OA R1 /4 External 19 Nose Cone (2600 Only) Others Consult Factory 2 mv Transient Protection CE Mark 3 Amplified RFI Protected CE Mark Electrical Connection 2200 Series A Industrial DIN Mating Connector Supplied B Industrial DIN Mating Connector Not Supplied 2 Cable Nema 4 USA 0 Cable Weatherproof IP65 Europe F Cable Gland Metal lp Series C Fixed Plug Size 10 6 Mating Plug Not Supplied G Fixed Plug To DIN Mating Plug Supplied M Moulded Cable Immersible Max. (See Note 1) 1 Fixed Plug Size 8 4 Mating Plug Not Supplied 3 Conduit Connector 1/2NPT Ext. 1M Cable (See Note 2) 7

10 Series 2200 & 2600 Pressure Transducers Dimensions 2200 Series G 1/4 Internal Industrial DIN Connector 00 B G 1/4 External 01 Industrial DIN Connector (Mate Supplied) A mv Gauge/Absolute Amplified Gauge /4 1/8 NPT G 1/2 Manometer 04 7/16 20 UNF 2A F IP67 Cable Amplified Absolute 05 G 1/4 Soft Seal 08 1/8 27 NPT IP65 or NEMA4 Cable D or 2 Maximum diameter 27.4mm (1.07 ) 0A R 1/4 09 G 1/8 Internal 8

11 Pressure Transducers Series 2200 & 2600 Dimensions 2600 Series G 1/4 Internal 10 6 or 8 4 Mil C Connector 00 G 1/4 External 01 Large DIN Plug (Mate Supplied) mv Gauge/Absolute Amplified Gauge 02 1/4 1/8 NPT 03 G 1/2 Manometer Conduit Connector with Cable 7/16 20 UNF 2A Amplified Absolute 04 Conduit Connector with Flying Leads 05 G 1/4 Soft Seal 1/8 27 NPT Maximum diameter 27.4mm (1.07 ) 08 R 1/4 R 1/4 Moulded, Immersible Cable 19 0A G 1/8 Internal G 1/8 Internal

12 Series 2200 & 2600 Pressure Transducers Electrical Connections Connection mv Units Current units (4-20mA) Voltage units IN+ OUT+ OUT- IN- (+) (-) EARTH IN+ COM OUT+ EARTH A, B, G Industrial DIN PIN E C "10-6 Bayonet" PIN A B C D A B E A C B E D "cable" R Y BL G R BK DRAIN R BK W DRAIN F "IP 67 cable" R Y BL G R BL DRAIN R BK W DRAIN M "Immersible R Y BL W R BL DRAIN R W Y DRAIN 1 "8-4 Bayonet" PIN A B C D A B D A C B D 2 "cable" R W G BK R BK DRAIN R BK W DRAIN 3 "conduit & cable" R W G BK R BK DRAIN R BK W DRAIN Cable Legend: R = Red; BL = Blue; BK = Black; W = White; G = Green; Y = Yellow Notes 1. Where electrical connection -M is specified, customer must select cable length from Table Where electrical connection -3 and cable length -U occur in part number, the unit will be supplied with flying leads (IP30). 3. Additional Pressure Ranges are available. Minimum range 500mb please consult factory. Table 1 Cable Units (2600 Series) (2200 Series select U through G ) Length (M) Length (M) Length (M) Length (M) Length (M) U No Cable Fitted F 5 K 25 p G 10 L 30 Q D 1 H 15 M 40 R E 3 J 20 N 50 S

13 Pressure Transducers Series 2200 & 2600 Options and Variations for Series 2200 & 2600 TYPE 453 L Chemical seal version This option is intended for harsh fluids as it can be fitted with corrosion resistant wetted parts. This variant can also be used where there are submerged solids in the process fluid. It has a fluid filled chamber to transmit the pressure in the process fluid to the transducers sensor. The pressure connection can be made to suit the application. Accuracy linearity ± 0.75% of range hysteresis ± 0.5% of range Weight 0.5 kg. Please note the flange clamping bolts must not be slackened as this will break the pressure seal and render the unit inoperative. TYPE 453 M High temperature version This option is intended for use for high temperatures it can also be used with high temperatures and harsh fluids as it can be fitted with corrosion resistant wetted parts. This variant can be also be used where there are submerged solids in the process fluid. It has an oil fluid filled chamber to transmit the pressure in the process fluid to the transducers sensor. High temperatures are cooled over the copper tube which keeps the pressure transducer at ambient temperature. Accuracy linearity ± 1.0 % range hysteresis ± 0.5% range Temperature Process temperature up to 200 C will not give rise to additional errors Weight 0.9 kg. Please note the flange clamping bolts must not be slackened as this will break the pressure seal and render the unit inoperative. The pressure connection can be made to suit the application. TYPE 453 N & 454 N Flange mounted version This version is intended to be used where pipe line flanges, hygienic fittings or special custom connections are required. Normally the connection is made from stainless steel but other materials are available. The connection has a flush diaphragm across the pressure opening. It has an oil fluid filled chamber to transmit the pressure in the process fluid to the transducers sensor. Accuracy linearity ± 0.75 % of range hysteresis ± 0.5% of range. Please note the flange clamping bolts must not be slackened as this will break the pressure seal and render the unit inoperative. Please note that it is the users responsibility to ensure that the material specified is compatible with the chemicals used and the application conditions of concentration and temperature. For chemical compatibility charts please see page 24 For further information please contact our technical department for the option and variants shown above. 11

14 Series 4000 Pressure Transducers This series of pressure transducers have been designed where a simple low cost device is required to give a readily usable 0 10V or 4-20 ma analogue signal. They can be supplied for many applications since the wetted parts can be selected to meet a wide range of corrosive requirements. CE marked models are fully certified in accordance with EN & EN FEATURES 5 Hall Effect (magnetic) Sensor 5 Ranges up to 25 bar V dc or 4-20 ma output 5 Supplied with a Plug & socket 5 Pressure connection 1/2 bsp parallel male 5 Weight 0.7 Kg TYPE 4311 Ranges 250 mbar 400 mbar 1 bar 2 bar 4 bar 7 bar 10 bar 25 bar 1 bar vacuum intermediate ranges available TYPE 4411 Ranges 25 mbar 50 mbar 100 mbar 160 mbar intermediate ranges available TYPE 4511 Ranges 10 mbar 20 mbar intermediate ranges available Accuracy Linearity & Hysteresis combined ± 2% of range Materials of construction Pressure Connection Brass Diaphragm Beryllium Copper Seal Nitrile rubber See page 24 for alternative wetted parts The units can be calibrated to intermediate ranges but the accuracy will relate to the appropriate diaphragm range shown above. Cover Anodised Aluminium 12

15 Pressure Transducers Series 4000 General Specification Calibration Gain (span) and offset (zero) adjustment of approx. ± 5% of range is provided under cover. Temperature Effects Typically ±0.14% per C between C. Calibrated at 20 C. Overpressure All ranges will accept range plus 10% Maintenance No maintenance is required on these transducers. On critical applications, periodic checks of offset at zero pressure, with slight adjustment, if necessary, will maintain optimum performance. TYPICAL WIRING DIAGRAMS Voltage Output SCREEN Current Output SCREEN PIN 1 OUTPUT PIN 2 COMMON PIN 1 OUTPUT PIN 2 COMMON LOAD PIN 3 SUPPLY (+VE) PIN 3 SUPPLY (+VE) Output load impedance 10k min. PIN 4 NOT USED Output load impedance 250k max. PIN 4 NOT USED NOTE It is important that the connections are made correctly. Reverse voltage application will damage the transducer. DIMENSIONS Ø 80.0 CABLE GLAND TO SUIT Ø 6.0 CABLE MAX CABLE GLAND TO SUIT Ø 80.0 Ø 6.0 CABLE MAX Ø Ø 80.0 CABLE GLAND TO SUIT Ø 6.0 CABLE MAX Type 4311 G 1/2 A A / F HEX Ø A / F HEX G 1/4 A Type Type Ø G 1/2 A A / F HEX Part No. Suffixes Ordering Information Example CEA 4 20 ma output (CE marked). Type 4311 Pressure Transducer. Connection 1/2 bar. CEB 0 10V dc Output (CE marked). Range 10 bar pressure. Fluid For use on water. 13

16 Series 4000 Differential Pressure Transducers This series of pressure transducers have been designed as a simple low cost device to monitor pressure difference between a high and a low pressure. For example across filters, through boilers etc. These transducers can be used to measure flow using orifice plates, pitot tubes etc (see pages for suitable digital displays with square root output). CE marked models are fully certified in accordance with EN & EN Features 5 Hall Effect (magnetic) Sensor 5 Differential pressure ranges up to 25 bar V dc or 4-20 ma output 5 Supplied with a plug & socket 5 Weight 1.2 Kg TYPE 4312 Ranges 250 mbar 400 mbar 1 bar 2 bar 4 bar 7 bar 10 bar 25 bar 1 bar vacuum Max. line pressure 90 bar intermediate ranges available TYPE 4412 Ranges 25 mbar 50 mbar 100 mbar 160 mbar Max. line pressure 34 bar intermediate ranges available TYPE 4512 Ranges 10 mbar 20 mbar Max. line pressure 10 bar intermediate ranges available The units can be calibrated to intermediate ranges but the accuracy will relate to the appropriate sensor range shown above. Accuracy Alternative wetted parts Ordering Information - Example Linearity & Hysteresis combined ± 2% of range Pressure Connection 316 Stainless steel Type 4412A Differential Pressure Transducer. Materials of construction Pressure Connection Diaphragm Seal Brass Beryllium Copper Nitrile rubber Diaphragm Seal Part No. Suffixes CEA 17/7 ph Stainless steel according to fluid 4-20 ma output (CE marked). Range Line Pressure Connection Fluid 50 mbar differential pressure. 20 bar. 1/8 bspp female. For use on water. Cover Anodised Aluminium CEB 0-10 V dc output (CE marked). 14

17 Differential Pressure Transducers Series 4000 General Specification Calibration Gain (span) and offset (zero) adjustment of approx. ± 5% of range is provided under cover. Temperature Effects Typically ±0.14% per C between C. Calibrated at 20 C. Overpressure All ranges will accept range plus 10% Maintenance No maintenance is required on these transducers. On critical applications, periodic checks of offset at zero pressure, with slight adjustment, if necessary, will maintain optimum performance. TYPICAL WIRING DIAGRAMS Voltage Output PIN 1 OUTPUT PIN 2 COMMON Current Output PIN 1 OUTPUT PIN 2 COMMON LOAD PIN 3 SUPPLY (+VE) PIN 3 SUPPLY (+VE) Output load impedance 10k min. PIN 4 NOT USED Output load impedance 250k max. PIN 4 NOT USED NOTE It is important that the connections are made correctly. Reverse voltage application will damage the transducer. DIMENSIONS Ø 80.0 CABLE GLAND TO SUIT Ø 6.0 CABLE MAX Ø Ø A / F HEX CABLE GLAND TO SUIT Ø 6.0 CABLE MAX Type CRS Type 4412 G 1/2 A 51.0 G 1/ G 1/8 Ø CRS Ø CABLE GLAND Ø 6.0 CABLE Type 4512 Optional Addition to Series 4000 Transducers All Hall Effect Pressure Transducers can be fitted with a digital display in the lid. Features 5 31/2 digit 10 mm high LCD display ma or 0-10V dc output 5 Offset & Gain adjustment through cover 5 Scaled in any pressure units When ordering state Fitted with LCD display after the pressure transducer specification. 15

18 Type 4101 Pressure Transducers This pressure transducer has been specifically designed where high electromagnetic radiation is present, such as in fire appliances, hospitals, radio transmitting stations etc. It is totally immune to and does not radiate any frequency of EMC. Features 5 Suitable for use in EMC noisy environments V dc output requires 12V dc supply 5 3/8 bspp male connection 5 IP65 enclosure 5 Plug & socket electrical connection WIRING DIAGRAM DIMENSIONS PIN 1 OUTPUT BLUE PIN 2 0V YELLOW PIN 3 12V dc REGULATED RED GROUND GREEN/YELLOW Pressure Ranges Accuracy Alternative wetted parts Any pressure range from 0 25 bar minimum to bar maximum Output Linearity & Hysteresis combined ± 2% of range Materials of construction Stainless steel The transducers can be used on all fluids compatable with the wetted parts. Ratiometric Pressure Connection Sensing Element Housing Brass Phospher Bronze Anodised Aluminium 16

19 Pressure Transducers Type 73PT Pressure gauge with high output signal. Designed to give pressure indication and electrical output signal for distant reading in one unit and only one pressure tapping. FEATURES 5 Gauge (g) ranges up to 600 bar g 5 Potentiometric or 4-20 ma output 5 6 dial pressure indication 5 Supplied with 1M flying lead 5 Weight 1.18kg 5 Pressure connection 1/2 BSP male (alternatives available) 5 Bourdon tube sensing element PART No. 73 PT for voltage output PART No. 73 PTA for 4-20MA output TYPE 73PT / 73PTA WIRING DIAGRAM Gauge Pressures For use with materials compatible with brass and phosphor bronze Ranges -1/0 bar g 0/25 bar g 73PT 0/1 bar g 0/40 bar g 0/1.6 bar g 0/60 bar g 0/2.5 bar g 0/100 bar g 0/4 bar g 0/160 bar g 0/6 bar g 0/250 bar g 0/10 bar g 0/400 bar g 0/16 bar g 0/600 bar g Alternative ranges available Note: The coil will be damaged if full load is applied via the wiper. Output: 0/2000 ohms (ranges up to 2.5 bar) 0/1570 ohms (ranges 4 bar and above) minimum load impedance 4K ohms Supply: 60V dc max regulated max current 12mA Accuracy ±1% 73PTA Output: 4-20 ma 2 Wire current loop max load impedance 400 ohms Supply: 12 to 24 V dc Output 73PT Ratiometric 73PTA 4-20 ma Note: If the wiring is reversed there will be no signal. 17

20 Type 70PT Pressure Transducers Pressure gauge with high output signal for harsh media. Designed to give pressure indication and electrical output signal for distant reading in one unit and only one pressure tapping. Features 5 Gauge (g) ranges up to 40 bar g 5 Potentiometric or 4-20 ma output 5 6 dial pressure indication 5 Supplied with 1M flying lead 5 Weight 1.2kg 5 Pressure connection 1/2 BSP male (alternatives available) 5 Diaphragm sensing element PART No. 70 PT for voltage output PART No. 70 PTA for 4-20mA output See page 24 for alternative wetted parts TYPE 7OPT / 70PTA WIRING DIAGRAM Gauge pressures For use with materials compatible with wetted parts specified. Brass and BeCu - standard. Seals - PTFE Ranges 0/2.5 bar g 73PT 0/4 bar g 0/6 bar g 0/10 bar g 0/16 bar g 0/25 bar g 0/40 bar g Note: The coil will be damaged if full load is applied via the wiper. Output: 0/2000 ohms minimum load impedance 4K ohms Supply: 60V dc max current 12mA Accuracy ± 1.5% f.s. Alternative ranges available 73PTA Output: 4-20 ma 2 Wire current loop max load impedance 400 ohms Supply: 12 to 24 V dc Output 70PT Ratiometric 70PTA 4-20 ma Note: If the wiring is reversed there will be no signal. 18

21 Pressure Transducers Type 69PT Pressure gauge with high output signal. Designed to give local indication of pressure difference between two points and electrical output signal for distant reading in one unit. Features 5 Differential ranges 5 Potentiometric or 4-20 ma output 5 6 dial pressure indication 5 Supplied with 1M flying lead 5 Weight 2kg 5 1/4 BSPFE connections (alternatives available) 5 Diaphragm sensing element 5 Maximum line pressure 34 bar g PART No. 69 PT for voltage output PART No. 69 PTA for 4-20mA output TYPE 69PT / 69PTA WIRING DIAGRAM Differential pressures For use with materials compatible with brass, BeCu and nitrile. Ranges 0/2.5 bar 73PT 0/4 bar 0/6 bar Alternative ranges available Maximum line pressure 34 bar (not to be applied to one side only). Note: The coil will be damaged if full load is applied via the wiper. Output: 0/2000 ohms minimum load impedance 4K ohms Supply: 60V dc max current 12mA Accuracy ± 2% f.s. Output 69PT Ratiometric 69PTA 4-20 ma Alternative wetted parts Stainless steel and viton seals 73PTA Output: 4-20 ma 2 Wire current loop max load impedance 400 ohms Supply: 12 to 24 V dc Note: If the wiring is reversed there will be no signal. 19

22 Type 440 Analogue Displays Low cost display for use with our range of single ported and differential pressure transducers and potentiometric pressure gauges. Features 5 96 Din case 5 Panel mounting 5 Rear screw terminals V & 4-20mA inputs 5 90 scale 5 IP54 enclosure PART No. 440 A is for 4-20mA input PART No. 440 B is for 0-10V dc TYPE 440A&B WIRING DIAGRAM For use with 4-20mA or 0-10V output transducers and potentiometric gauges detailed in this catalogue. Ranges -1.0 bar vacuum up to 600 bar pressure. (provided with each unit) 440A Alternative scales available Dimensions Front face 96x96mm Depth of case 43mm Depth including terminals 60mm Separate power supply required 12 to 24V dc. Panel cutout 92x92mm 440B Accuracy ± 2% f.s. Separate power supply required either 12 to 24V dc single rail or dual rail. Input 4-20 ma ñ 440A 0-10V ñ 440B 20

23 Digital Displays Type 441 This display is intended for use with the pressure transducers illustrated in this catalogue. They can also be used in other applications where digital indication of an input value is required. The displays are CE marked in accordance with European legislation. Features mm high LEDs 5 1/8 din case 5 Factory set user configured 5 2 software alarms V ac or 12-24V dc input option 5 Front panel conforms to IP 64 5 Square root extraction built-in 5 Powers all Bailey & Mackey transducers directly DIMENSIONS General Specification Calibration Accessed from front panel Alarms Two software alarms Power Supply Input 90 to 265V ac or 12 to 24V dc On mains units it is recommended that a 50 ma anti-surge fuse is fitted in the live input supply to the display Part No. Suffixes A B 4-20 ma 0-10V dc output Ordering Information - Example Panel cut-out 93x45mm Depth behind panel 175mm Supplied with all connectors Type 441A Supply 240V 50Hz Calibration 0-10 bar Installation instructions provided with each display 21

24 Type 442 Digital Displays Digital Display Dual Alarm Type 442 This display is intended for use with the pressure transducers illustrated in this catalogue where two volt free alarm contacts are required. They can also be used in other applications where digital indication of an input value is required. The displays are CE marked in accordance with European legislation. Features mm high LED s 5 1/8 din case 5 Factory set user configured 5 2 spco volt free relay contacts 5 2 software alarms V ac or 12-24V dc input option 5 Front panel conforms to IP 64 5 Square root extraction built in 5 Powers all Bailey & Mackey transducers directly DIMENSIONS General Specification Calibration Accessed from front panel Alarms Two software alarms Power Supply Input 90 to 265V ac or 12 to 24V dc On mains units it is recommended that a 50 ma anti-surge fuse is fitted in the live input supply to the display Part No. Suffixes A B 4-20 ma 0-10V dc output Ordering Information - Example Panel cut-out 93x45mm Depth behind panel 175mm Supplied with all connectors Type 442A Supply 240V 50Hz Calibration 0-10 bar Installation instructions provided with each display 22

25 Power Supplies Series 500 The following power supplies have been selected for use with the transducers illustrated in this catalogue. Connection details are supplied with each power supply supplied. To ensure the correct unit is used please contact our technical department prior to ordering. TYPE 553 TYPE 555 For use with Type 453B & Type 454B pressure transducers shown on page 4 Output: Dual rail adjustable (10 to + 15V dc 0.5 A max.) Supply: 240v 50/60 Hz only Case: Enclosed type with ventilation apertures For use with Type 045/3 and Type 045/4 shown on page 2 Output: Single rail fixed (+5V dc 0.5 A max.) Supply: 110/240V 50/60 Hz. Case: Enclosed type with ventilation apertures TYPE 554 TYPE 556 For use with Type 453, Type 454, Type 4311, Type 4312, Type 4411, Type 4412, Type 4511 and 4512 pressure transducers shown on pages 4-16 Output: Single rail adjustable (+10 to +20V dc 0.5A max.) Supply: 240v 50/60Hz only Case: Enclosed type with ventilation apertures For use with Type 453, Type 454, Type 4311, Type 4312, Type 4411, Type 4412 Type 4511 and 4512 pressure transducers shown on pages 4-16 Output: Single rail adjustable (+12 to +15V dc 1.5 A max.) Supply: 110/240V 50/60Hz only Case: Open chassis type For further information please contact our Technical Department 23

26 Chemical Protection Pressure Transducers It is the user s responsibility to ensure that the materials are compatible with the application. Malleable Iron Base, 316 S.Steel Disc Acetylene Alkyl Chlorides Ammonia (Max 60 C) Aniline Calcium Chloride (Max 60 C) Caustic Soda (Max 60 C) Chlorides of Na, K, Mg Hydrocyanic Acid Pyridine Silver Plated Base, Fine Silver Disc Brines Bromine Chlorine (wet or dry) chlorates of Na, K, Ba Chlorides of Na, K, Mg Flourine Mercuric Chloride Ozone UPVC Base 1/2 BSP, PTFE Disc Max Temperature 40 C Max Pressure 200 lbf/in2 Anhydrous Ammonia Aluminium Chloride Caustic Soda Hydrobromic Acid (50%) Hydrochloric Acid (36%) Hydrogen Sulphide Lead Acetate Methanol Oxalic Acid Phosphoric Acid (50%) Potassium Salts Sodium Hypochlorite Sodium Salts Sulphuric Acid (70%) Waste Gases 316 Stainless Base and Disc Acetic Acid Ammonium Hydroxide Carbon Disulphide Carbon Tetrachloride Caustic Soda Caustic Potash Citric Acid Formic Acid Fruit Juices Food Machinery Hexamine Hydrogen Peroxide Oil-Phosphate Ester Based Silver Nitrate Water De-ionised Contact our technical sales department for accuracies of transducers with alternate wetted parts. 24

27 Pressure Transducers Installation and Use A Pressure Transducer correctly installed and to the correct specification gives an electrical output proportional to the pressure in the system which helps to ensure the safe working of process plant and machinery. a) Before fitting the pressure transducer to a pressure source check that the range (full scale) of the device is the same or higher than the pressure to be applied. b) Before fitting the pressure transducer to a pressure source check that the wetted parts are compatible with the fluid being used, and that the pressure connection correctly matches that of the pipework. c) When fitting the pressure transducer to pipework use correct sealing methods. Do not use the transducer body to tighten the pressure transducer to the pipework, use correct spanners on the hexagon base. d) Do not use pressure transducers on Oxygen or Acetylene unless approved by our Technical Department. e) Ambient and process temperature acting on the transducer should be within catalogue values. The unit should be protected from higher fluid temperatures by means of a syphon tube filled with condensate before use. The fluid in the pressure chamber should not be allowed to freeze or crystallise as this will lead to rupture of the sensing element. f) Differential pressure transducers should not be used with more than the range of the transducer applied to one side unless approved by our Technical Department. Line pressure must not exceed the line pressure stated on the pressure transducers label. The higher of the two pressures must be connected to the port marked high and the lower of the two pressures must be connected to the port marked low. g) Ensure that the pressure transducer is connected electrically in accordance with the installation instructions supplied with the unit. Incorrect connection can damage the pressure transducer beyond repair. If in doubt concerning the application of any pressure transducer please contact our Technical Department who will be only too pleased to give you advice. Pressure Conversion Factors Multiply units in left hand column by factor to obtain units at top. i.e. bar x = lbf/in 2 bar lbf/in 2 kg/cm atm (std) MH 2 O inh 2 0 mmhg inhg N/M 2 Pa bar lbf/in kg/cm atm (std) MH 2 O inh 2 O 0, mmhg inhg N/M Pa The right is reserved to change product specifications without prior notice. 1

28 OTHER PRODUCTS IN OUR RANGE PRESSURE SWITCHES BOURDON TUBE PRESSURE GAUGES DIAPHRAGM & DIFFERENTIAL PRESSURE GAUGES Keeping pressure under control Tel +44 (0) Fax +44 (0) Web DP09PT