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Bacharach 2772-0803 manual

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  • Page 1

    INSTRUCTION 2772-0803 REMOTE INTELLIGENT SENSOR AREA MONITOR Installation/Operation/Maintenance Rev. 14 – February 2004 (CN #3252) 251 Welsh Pool Road Exton, P A 19341 Ph: 610-363-5450 • Fax: 610-363-0167 Website: www .scottinstrument s.com • www.bacharach-inc.com Printed in U.S.A. ®Registered Trademark ®[...]

  • Page 2

    A Declaration of Conformity Manufacturer's Name: SCOTT INSTRUMENTS Manufacturer's Address: 251 Welsh Pool Road Exton, PA 19341 USA Product Name: Remote Intelligent Sensor Conforms to the following product specifications EMC: European Directive 89/336/EEC EN 500081-1 (Emissions) EN 500082-1 (Immunity)[...]

  • Page 3

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page i CONTENTS Page # FEATURES .................................................................................................................................... v PRODUCT SPECIFICATION ..................................................................................................[...]

  • Page 4

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page ii Instruction 2772-0803 2.8 SYSTEM CHECK ....................................................................................................................... 2-4 2.8.1 TAPE CASSETTE LOADING ..................................................................................... 2-4 2.8.2 CHECK AND ADJU[...]

  • Page 5

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page iii 3.13 OPTIONAL FEATURES ........................................................................................................ . 3-4 3.13.1 RELAY ALARM OPTION ............................................................................................ 3-4 3.13.2 PRINTER INTERF[...]

  • Page 6

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page iv Instruction 2772-0803 4.12 EXTERIOR CLEANING ................................................................................................. 4-6 4.13 KEY PARAMETER CHECKS ......................................................................................... 4 -6 4.14 MECHANICAL TIGHTNESS .......[...]

  • Page 7

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page v FEATURES • TRUE CONTINUOUS MONITORING WITH RELIABLE PAPER TAPE DETECTION Using GMD developed, optimized and proven tape technology. • MICROPROCESSOR CONTROLLED AND SOLID STATE LOGIC For reliability, flexibility and calibration stability. • QUICK RESPONSE & AUTORANGING S[...]

  • Page 8

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page vi Instruction 2772-0803 PRODUCT SPECIFICATION ACCURACY ppb Ranges: ± 15 % of reading ± 1 ppb. ppm Ranges: ± 15 % of reading ± 0.01 ppm. 2772-0020: ± 20 % of reading ± 0.01 ppm. 2772-0035: ± 20 % of reading ± 0.02 ppm. PHYSICAL Dimensions: 7" Depth x 11.75" Width x 7.875" Height ([...]

  • Page 9

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page vii PRODUCT SPECIFICATION (continued) DISPLAY Custom LCD Display: Area measures 5.7" (145mm) x 3.2" (81 mm). Displayed parameters include: System Readiness status, Measured Concentration (3 decades of ppb or ppm), Tape Remaining, and Icons for Gas & Fault alarms. In t[...]

  • Page 10

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page viii Instruction 2772-0803 * High Flow, all others are Low Flow TABLE #1 RIS CATALOG NUMBERS & DATA CA TA LO G NUM B E R GAS T YPE GAS CODE R A NGE UNI T S FL O W RA TE AL AR M LE V E L 1 AL AR M L EVEL 2 AN AL OG OUT P UT 2772- 0010 T DI 0 1000 ppb 200 5 10 10 0 2772- 0015 T DI HI G H RA NG E 5 200[...]

  • Page 11

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 1-1 1 INTRODUCTION 1.1 SYSTEM DESCRIPTION A range of Remote Intelligent Sensors (RIS) are available. Each is designed to measure low concen- trations of a specific gas. Multiple RIS systems can be connected into a control network to provide an area monitoring capability with centra[...]

  • Page 12

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 1-2 Instruction 2772-0803 On the main board are mounted several potenti- ometers and ‘dip’ switches. These should not nor- mally be touched, particularly dip switch 1 . However, a potentiometer (POT) is provided for user adjustment of the pump flow rate. The location of the POT is shown in Figure 1-[...]

  • Page 13

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 1-3 1.3.8 SAMPLE INLET. The sample is brought into the RIS through the short length of black FEP tube and into the optic block. There are two types of input tube; one has a single 0.25 inch (6 mm) diameter tube, the other is a double tube arrange- ment used for systems that monitor[...]

  • Page 14

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 1-4 Instruction 2772-0803 NOTES[...]

  • Page 15

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 2-1 2 INSTALLATION AND SYSTEM CHECK The RIS may be installed inside or out. It should be mounted and connected according to the instructions provided below, and in an environment that is within the specified limits detailed in the Product Specification. WARNING Failure to comply wi[...]

  • Page 16

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 2-2 Instruction 2772-0803 When input connections have been made, and 12 volts DC is available at J1 terminals #1 & 2, leave the system connected overnight with system switch, SW1, off during the recharge . WARNING Each RIS power supply must be connected to line voltage by a separate circuit back to [...]

  • Page 17

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 2-3 2.5.2.3 ‘Worst Case’ Current. Low Flow RIS. A practical ‘worst case’ current of 500 mA may be considered reasonable under most situations. Where long-term power disruptions (more than 2 hours) are likely, it may be prudent to assume 550 - 700 mA ‘worst case’. High F[...]

  • Page 18

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 2-4 Instruction 2772-0803 2.6.3 REACTIVE GASES. Many gases are extremely liable to attenuation and no extension of input tube should be attempted . These gases include ISOCYANATES, HYDRAZINES and ACID GASES such as HF and HCI. 2.6.4 SYSTEM PERFORMANCE WITH EXTENDED SAMPLE LINES. Bacharach will not guara[...]

  • Page 19

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 2-5 If the ‘O’ ring is left on the purge spigot the new cassette will not seat fully and faulty tape handling will occur. Push the new cassette firmly into position. When doing so make sure that the tape enters the open gate and does not catch on the side and break. If the tape[...]

  • Page 20

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 2-6 Instruction 2772-0803 Alarm Level 1 is displayed first and is identified by the number 1 which is shown in addition to the numerical set point value. Similarly, the Alarm level 2 set point which follows, is identified by a 2. IMPORTANT: Be aware that if the RIS is switched off at SW1, the alarm set [...]

  • Page 21

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 2-7 2.9 OPTION PCB INSTALLATION Under the cover on the main board are three slots for mounting option boards. An option board can be inserted in any available slot. The two option cards available are the Serial Printer Interface PCB, and the Alarm Relay PCB (See Section 5.5 for ord[...]

  • Page 22

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 2-8 Instruction 2772-0803 TERMINAL USE AND TERMI- SILKSCREEN IDENTS NAL 12 VDC – 1 INPUT + 2 (Connected internally to #1) 3 ANALOG – A 0V 4 OUTPUT + A OP 5 NET- A IN 6 WORK A OU T 7 COMMS B 8 INTERFACE S 9 PI 10 SERIAL P O 11 DATA Non GMD PRINTER PRDY 1 2 BUSY Printer INTERFACE PPRS 13 GROUND see Se[...]

  • Page 23

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 2-9 Figure 2-3. Phase 2 Base Board Terminal Strips[...]

  • Page 24

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 2-10 Instruction 2772-0803 Figure 2-4. Figure 2-5.[...]

  • Page 25

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 2-11 Figure 2-6.[...]

  • Page 26

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 2-12 Instruction 2772-0803 Figure 2-7 Figure 2-8[...]

  • Page 27

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 3-1 Effective purging requires the enclosure to be properly sealed. Ensure that the cable glands and the door are air tight. Unused cable glands can be tightened onto a short piece of cable. Purge inlet and exhaust ports can be piped to a remote location, where this is necessary. 3[...]

  • Page 28

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 3-2 Instruction 2772-0803 This method eliminates the ‘zero drift’ that could otherwise occur with slight variation in the reflective value of the tape. It also ensures that system accuracy is not compromised when reusing the same tape spot. System accuracy is not compro- mised when reusing the same [...]

  • Page 29

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 3-3 Flashing This symbol shows that sampling vacuum has dropped. The cause could be a pump failure or an air leak. Optics Icon warns that the light level is not acceptable. In addition, the affected channel is shown by a 1 or 2, or both. NOTE: This will occur if the tape gate is op[...]

  • Page 30

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 3-4 Instruction 2772-0803 3.8.3 FAULT RELAY. With the basic system the single (combined) gas alarm/fault relay is operated to provide external warning of any of the monitored ‘fault’ conditions. In a fault condition, the relay output ‘toggles’ open and closed at 1 Hz. When the Relay alarm Option[...]

  • Page 31

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 3-5 IMPORTANT: Please note that this method is not suitable for, and is not intended to be used for, checking or verifying the system’s calibration, but only for alarm simulation and checks. Test Preparation . Warn that tests are to be carried out and that external alarm systems [...]

  • Page 32

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 3-6 Instruction 2772-0803 In addition to that supplied by GMD, printers meeting the specification detailed below may be used. Those intending to use an alternative printer should check the specification carefully. 3.14.2 PRINTER SPECIFICATION. The printer must be capable of receiving serial data and mee[...]

  • Page 33

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 3-7 3.14.3.4 Printed Date Format. A choice of month/ day or day/month format is available: For the US month/day/year format, set SW2 switches 1 and 2 ‘ON’. For the European day/month/year format, set SW2 switches 1 and 2 ‘OFF’. 3.14.3.5 Data Storage Up To 7 Days. In any of [...]

  • Page 34

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 3-8 Instruction 2772-0803 The plug can then be cut off and the wire ends prepared for termination in a plug that will mate with that fitted on the RIS. The plug should be connected in accordance with the following table. Plug Pin # Connect to: 1 to 3 No connection 4 DATA 5 BUSY 6 GROUND 7 Link to pin 6 [...]

  • Page 35

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 4-1 Allow the Test data to cycle to the light level value (track 1), HOLD the display and check that the reading is near 220. RELEASE the track 1 display and then HOLD to check track 2. RELEASE track 2 and again press the TEST Mode button to return to the NORMAL mode. The light fau[...]

  • Page 36

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 4-2 Instruction 2772-0803 With the tape in place, adjust the track 1 potentiometer until the reading is 220. Clockwise rotation of potentiometers increases the level. When track 1 has been adjusted, press the HOLD/RELEASE button to allow track 2 to be displayed. HOLD this display as before and adjust tr[...]

  • Page 37

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 4-3 4.8 MEASURING PUMP CURRENT To establish the pump run current, first check the system current in the TEST Mode. Then the total current is measured as detailed below and the TEST Mode current deducted from total current to give pump current. If the printer option is fitted, the t[...]

  • Page 38

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 4-4 Instruction 2772-0803 Repeat several times, also with the gate open. If a can of pressurized air is available, carefully position tube at the tape side of the gate and blow again several times. Suitable cans of air are usually available from photographic suppliers. A mechani- cal pump or bellows can[...]

  • Page 39

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 4-5 NOTE: If it is not possible to achieve a satisfactory average tape step length, please refer to additional information in Section 4.21.2. Figure 4-7. Summary of Gate & Step Values 4.10.7 WHAT TO DO IF CLEANING DOES NOT RECTIFY THE PROBLEM. If performance cannot be improved,[...]

  • Page 40

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 4-6 Instruction 2772-0803 4.11.2 REMOVAL OF THE MECHANICAL CHASSIS. Remove the cassette, undo the two ribbon cable connectors and the two hose couplings in the tubes that connect the chassis to the body of the instrument. Undo the three (captive) cap head screws that secure the chassis (see Figure 4-8).[...]

  • Page 41

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 4-7 entered. These practices, if regularly carried out, will build up an informative system history. This will show trends and prove a useful diagnostic aid should this be required. The time taken to check and record parameters for each cassette change is normally only a few minute[...]

  • Page 42

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 4-8 Instruction 2772-0803 NOTE: The sections below do not refer to the modest changes in flow that occur over a period of time and are quickly adjusted for with the appropriate potentiometer. 4.20.1 A FAULTY PUMP. If this is the case, change the pump. Note that there are two pump types, which are fitted[...]

  • Page 43

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Instruction 2772-0803 Page 5-1 5 SYSTEM SPARE PARTS 5.1 MODEL DEPENDENT PARTS Some parts are model dependent (see the tables below). The other parts are common to all models. 5.1.1 CASSETTE INSTRUMENT GAS TYPE CASSETTE CAT.# CAT.# 2772-0010 T D I 2772-1010 2772-0015 TDI HIGH RANGE 2772-1010 2772-0020 HYDRAZI[...]

  • Page 44

    REMOTE INTELLIGENT SENSOR - AREA MONITOR Page 5-2 Instruction 2772-0803 5.5 OPTIONS AND SUPPLIES CAT. # DESCRIPTION 2772-0251 Serial Printer Interface PCB 2772-2079 Portable Prnter 110/120 VAC 2772-2078 Portable Printer 220 VAC 2772-2077 Portable Printer 240 VAC 2772-2083 Portable Printer Cable 2701-1347 Replacement Printer Ribbon 2701-1387 Replace[...]

  • Page 45

    Instruction 2772-0803 Page S-A1 REMOTE INTELLIGENT SENSOR - AREA MONITOR Several references to RlS’s manufactured before April 1992 with phase 1 base boards have been given in the main manual (Sections 1.1, 1.3.7, 2.8.2.1, & 4.4) Any references to Figure 2-3 should be refered to Figure S-3. The light level adjustment POTs for boards manufactu[...]

  • Page 46

    Page S-A2 Instruction 2772-0803 REMOTE INTELLIGENT SENSOR - AREA MONITOR Adjustment method ‘b’ . Remove the cassette and pull out a loop of several inches of tape. Insert a portion in the gate while the cassette is held in one hand; or placed on the top of the RIS. Do not touch tape with bare fingers to avoid contact with the chemicals on the t[...]

  • Page 47

    Instruction 2772-0803 Page S-A3 REMOTE INTELLIGENT SENSOR - AREA MONITOR Figure S-3. Phase 1 Base Board Terminal Strip Identifications[...]

  • Page 48

    Page S-A4 Instruction 2772-0803 REMOTE INTELLIGENT SENSOR - AREA MONITOR Figure S-4. Phase 2 (Early Version) Base Board Terminal Strip Identifications[...]

  • Page 49

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