666iom (Page 1) - Dwyer Instruments, Inc.
Contents
1. BULLETIN A 30 666 SERIES 666 RANGEABLE DIFFERENTIAL PRESSURE TRANSMITTER Specifications Installation and Operating Instructions 3 16 4 76 DIA MOUNTING HOLE es lt 19 05 6 13 64 157 56 5 19 32 3 16 4 76 OD PRESSURE FITTING 142 08 Description Versatility is the key with our Series 666 Rangeable Differential Pressure Transmitter Up to 6 field selectable pressure ranges are available in a single model Four dipswitches located inside the transmitter case make calibration simple and easy Glass Filled Polycarbonate housing provides environmental protection per NEMA 4 IP65 Units can withstand overpressure to 10 psig Low pressure ranges and 1 full scale accuracy make these transmitters ideal for HVAC and energy manage ment applications Installation Pressure Fitting Two 2 3 16 O D barbed pressure fittings are supplied for pressure connection with 1 4 push on tubing Both the positive high pressure port and the reference low pressure port are located on the bottom of the unit labeled High and Low respectively For best results shortest response times 16 I D tubing is suggested for tubing lengths up to 100 feet long 1 4 D for tubing lengths up to 300 feet and s I D for tubing lengths up to 900 feet Electrical Connections Wiring is through a PG9 cable strain relief Wiring termi nations are identified on the circuit board below the terminal s2. ectional pressure ranges turn the zero adjust ment screw until a reading of 4 mA 0 15 mA is achieved For bidirectional ranges set the zero to 12 mA 0 15 mA Span Adjustment Complete the zero adjustment before setting span Span on full scale output adjustments should only be performed by using an accurate pressure standard electronic manometer digital pressure gage etc with at least comparable accuracy to the 666 series lt 1 full scale With full scale pressure applied to the high pressure port reference port open to atmosphere adjust span to achieve 20 mA output Example 1 Unidirectional pressure range of O to 1 W C Apply 1 00 W C adjust span to 20 mA Example 2 Bidirectional pressure range of 5 W C Apply 5 00 W C adjust span to 20 mA Copyright 1999 Dwyer instruments Inc DWYER INSTRUMENTS INC P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A Printed in U S A 3 99 Single Range LCD Version The 666 series is available with an optional LCD display Field adjustable multi range capability is not available with this option A single factory calibrated range is specified at order entry The LCD readout is located in a window on the top cover Multi Range Operation The 666 series is re rangeable by accessing the switches located internal to the transducer housing Remove cover using housing screws The Dip switches are located on the electronics board as shown in Figure 2 T
3. he location of these switches on or off determine what range has been selected See Figure 2 Range Switching Instructions 666 2 Range 666 3 Range 666 4 Range Switch Settings 0 625 Figure 2 Maintenance Repair After final installation of the Series 666 Rangeable Differential Pressure Transmitter no routine maintenance is required A periodic check of system calibration is recommended These devices are not field repairable and should be returned to the factory if recalibration or other service is required After first obtaining a Returned Goods Authorization RGA number send the material freight prepaid to the following address Please include a clear description of the problem plus any application information available Dwyer Instruments Inc Attn Repair Department 102 Highway 212 Michigan City IN 46360 FR R1 443098 00 Phone 219 879 8000 Fax 219 872 9057 www dwyer inst com Lit By Fax 888 891 4963 e mail info dwyer inst com
4. loop powered 4 to 20 mA current output unit See Figure 1 The current flows into EXC terminal and returns back to the power supply through the EXC terminal The power supply must be a DC voltage source with a voltage range between 9 and 30 VDC measured between terminal EXC and EXC DWYER INSTRUMENTS INC P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A Phone 219 879 8000 Fax 219 872 9057 Lit By Fax 888 891 4963 www dwyer inst com e mail info dwyer inst com The unit is calibrated at the factory using a 250 ohm load at 24 VDC Notes Minimum Supply Voltage VDC 9 0 02 x resistance of receiver plus line Maximum Supply Voltage VDC 30 0 004 x resis tance of receiver plus line If the current loop has a current limiter threshold should be adjusted to 35 mA minimum a Pressure L NANN 9 30 VDC Transmitter Figure 1 Calibration The 666 series is factory calibrated and should require no field adjustment However both zero and span adjustments are accessible under the cover of the unit below and to the right of the terminal strip Whenever possible any zero and or span offsets should be corrected by software adjustment in the user s control system The 666 series is calibrated in the vertical posi tion at the factory baseplate vertical Zero Adjustment While monitoring the current output with both pressure ports open to atmosphere the zero may be adjusted For unidir
5. trip To access the terminal strip remove the 1 9 32 32 54 15 16 23 81 1 47 64 44 51 64 20 24 PHYSICAL DATA Service Air and non conductive gases Accuracy 1 of full scale RSS includes non linearity hysteresis and non repeatability Output 4 to 20 mA 2 wire Loop Resistance 0 500 ohms Supply Voltage 9 30 VDC Maximum Pressure 10 psig 0 7 kg cm Compensated Range 40 to 150 F 5 to 65 C Thermal Effects 0 033 FS F 0 06 FS C includes zero and span 2 3 8 60 33 Temperature Limits Operating 0 to 150 F 18 to 65 C Storage 65 to 180 F 54 to 82 C Housing Glass Filled Polycarbonate case NEMA 4 IP65 Mounting 2 mounting tabs with 18 dia holes Electrical Connection Screw terminal strip with PG 9 cable strain relief Pressure Connection 3 16 O D barbed brass pressure fitting for 1 4 I D tubing Weight 16 4 oz 465 g SERIES 666 TRANSMITTER MODELS amp RANGES Model Ranges Model Ranges Number Inches W C Number Inches W C 0 to 1 25 0 to 2 5 0 to 0 1 O to 0 05 0 to 5 0 to 0 625 0 to 1 25 O to 2 5 cover by using the screws on the top of the case 0 to 0 25 0 to 0 5 0 to 7 5 O to 15 0 to 1 0 O to 0 125 666 4 0 to 30 0 to 3 75 0 to 0 25 0 to 0 5 0 to 7 5 Oto 15 Also available with optional LCD display Consult factory for additional infor mation The Series 666 Current transmitter is a
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