Table of Contents
Advertisement
Advertisement
Table of Contents
Related Manuals for MMC D-2401-2
Summary of Contents for MMC D-2401-2
- Page 2 MMC INTERNATIONAL CORP. OPERATING AND MAINTENANCE INSTRUCTIONS INTRINSICALLY SAFE TRIPLE FUNCTION GAUGING TAPE FOR RESTRICTED APPLICATIONS LIQUID MEASURE OF ULLAGE, OIL/WATER AND TEMPERATURE MODEL D-2401-2 TECHNICAL APPROVED BY: FACTORY MUTUAL AND BASEEFA FOR CLASS I, DIVISION I, GROUPS C & D LLOYD'S REGISTER AND BUREAU VERITAS "MED"...
-
Page 3: Table Of Contents
TABLE OF CONTENTS PAGE NUMBER NOTICES GENERAL 1.0 SPECIFICATIONS ........... . 1.1 LINEAR ACCURACY SPECIFICATIONS . - Page 4 International requirements of a petroleum carrier, or a dual classed chemical / petroleum carrier. We hope that this sensor performs satisfactorily for all your applications and we would appreciate any return comments you may have concerning its response to various products. Best Regards, MMC International Corp.
-
Page 5: Specifications
SECTION I I. GENERAL 1.0 SPECIFICATIONS: °F = -40° to 199.9°* Display Readable Temperature Range ....*Reading Limit Due to 3-1/2 Digit LCD Display on °F Range. °C = -40°... -
Page 6: Linear Accuracy Specifications
+/- 0.01% of total tape length. GENERAL STATEMENT OF LINEAR ACCURACY MMC warrants that the above listed, newly produced equipment models, incorporating the listed basic gauging tape style and lengths, will perform to the stated system accuracy. Certification of accuracy for new equipment is available at extra cost. Certification cost to standards of accuracy more precise than the stated system accuracy will be quoted upon request. -
Page 7: Special Features
SPECIAL FEATURES: Conductive Tape Surface to Drain Off any Static Charge Grounding Cable with Heavy Alligator Clamp Watertight Electronics Construction with Sealed Switches All Stainless Steel Fasteners Nylon Coated Aluminum Reel Housing for Light Weight Portability Low Battery Display Indicator High Daylight Visibility with Liquid Crystal Display Push-button Night Light Rapid Multiple Temperature Measurements... - Page 8 0.1 degree and is accurate to ±0.2°F over the calibrated temperature ranges given in the specifications listed in Section I. The MMC system utilizes a sensor suspended at the end of a fluoropolymer covered \ gauging tape wound on a reel assembly, The plastic covered steel gauging tape contains two isolated side conductors to carry the signal and power to the electronic circuit within the sensor barrel with the steel tape provides the ground return.
- Page 9 SECTION III 3.0. THEORY OF OPERATION Drawing D-2562-1FRL illustrates the main components of the Ullage, Temperature and Interface system. A tape reel contains the calibrated tape. The reel crank on the driving hub is used by the operator to raise and lower the sensing head assembly which is attached to the reel via the tape.
- Page 10 The two potentiometer controls, R13 and R18, perform as a two point temperature calibration adjustment. A complete temperature calibration procedure is later described in this manual. (See Section VIII). Temperature re-calibration is recommended at yearly intervals. Please note that units returned Temperature Calibration during standard or extended warranty periods are not covered by warranty statement.
-
Page 11: Required Conditions
SECTION IV REQUIRED CONDITION AND RECOMMENDATION FOR SAFE USAGE The attention of the user of this apparatus is drawn to the possible hazards of ullage, interface and temperature measurements within flammable liquids, which are also known to be generators of static electricity. -
Page 12: Located On The Tape Reel Hub Cover Panel
SECTION V OPERATION FAMILIARIZATION WITH OPERATING CONTROLS AND FEATURES LOCATED ON THE TAPE REEL HUB COVER PANEL: 5.1.1 Turn on power by momentarily depressing the “Off/On” push-button switch (1) located at left of panel. The display should read 1XX.X* indicating that the system is in the Ullage/Interface mode. - Page 13 5.2.3 Make sure “LO BAT” Does not show at left upper corner of display 5.2.4 After grounding the assembly, insert the barrel of the gauging into the valve. Un-lock the tape reel lock, by rotating the brass lock thumbscrew counterclockwise turning position hub seat. Grasp the knurled reel crank hand and lower the sensor head tape assembly, which contains the sonic sensor, into the tank.
-
Page 14: Temperature Measurement Procedure
TEMPERATURE MEASUREMENT PROCEDURE 5.3.1 If power is off, turn unit on by depressing “Off/On” push-button switch. Unit comes on in Ullage/Interface mode. Depress “Mode” push-button switch to select temperature. 5.3.2 If unit was on and in Ullage/Interface mode, simply press the “Mode” push-button to select temperature. - Page 15 SECTION VI CARE AND MAINTENANCE Proper care and maintenance should be practiced to maintain long trouble free and accurate service and to maximize battery life, as follows: When not in use, make sure power is off as evidenced by display being extinguished. Store sensor head assembly in the fully wound position and store in a dry location.
-
Page 16: Temperature Sensor Calibration
TEMPERATURE SENSOR CALIBRATION The temperature sensor and its associated electronic circuitry have been accurately calibrated at the factory . Temperature Calibration by MMC is recommended at twelve-month intervals, with periodic checks being carried out as necessary between these intervals. Before attempting any calibration, make sure that the battery is at a proper voltage level as evidenced by the fact that "Lo Bat"... - Page 17 7.2.9 Calculate Zero Correction = tc (ph - pc) - pc th - tc 7.2.10 Place sensor in cold bath. Stir and wait until sensor reading on display stabilizes. Note reading and then adjust “Zero” control potentiometer marked (R13) so that the zero correction calculated in step 8.2.9. above is added to or subtracted from the sensor reading.
- Page 18 The sensor is connected to the tape be means of a quick connect plug to the tape socket plug. As with all tefzel coated MMC gauging tapes, the outer surfaces are factory treated to render the surfaces of the tapes anti-static properties.
- Page 19 SECTION IX HUB COVER AND P.C. BOARD REPLACEMENT To replace the turning drum hub cover and P. C. Board, follow the steps outlined below: Remove the six machine screws from the hub cover, and extract cover, gasket and P.C. Board. Unplug battery cap.
- Page 20 SECTION X 10.0 FAULT FINDING (SEE DRAWING B-2401-31) The following section covers only simple faults that may occur. No attempt has been made in this section to cover highly technical faults. PROBLEM NO. 1: Unit does not turn on when power "OFF/ON" switch is depressed. PROCEDURE &...
- Page 21 Determine if sensor is still useful by following the calibration procedure given is Section VII. If fault not corrected, return to MMC for repair. Sensor or integrated circuit chip may require replacement. PROBLEM NO. 5: Liquid Crystal Display (LCD) does not function properly one or more segments stay on or off all the time producing strange figures.
- Page 22 20-23 C. Factory Mutual Approval Agreement, Certificate No. OFOH1.AX, Dated September 6, 1983 D. Lloyd’s Register, Certificate of Type Approval, Type D-2401-2, D-2401-2UI, D-2401-2UT IMO Resolution MEPC.5XIII, Certificate No. SASP020006, E. Lloyd’s Register, Certificate of Type Approval, Type D-2401-2S, D-2401-2UIS, D-2401-2UTS IMO Resolution MEPC.5XIII, Certificate No.
- Page 23 No other warranty period, in excess of one year, may be expressed or implied by sub-agents or others, unless authorized in writing by MMC. The liability of the seller under this warranty is limited, at seller’s option, solely to repair or replace with equivalent equipment.
- Page 35 EXPLOSION PROTECTED ELECTRICAL EQUIPMENT CERTIFICATE OF COMPLIANCE Certificate Number: Ex 973 This certificate is issued for the electrical equipment: Ullage Interface Temperature Probe Model D-2401-2 Submitted for Certification by: MMC International Corporation 60 Inip Drive INWOOD L.I. YORK 11696 USA and Manufactured by;...
- Page 41 Page 37...
- Page 42 P 38...
- Page 44 GLOSSARY OF APPROVALS MAJOR APPROVAL STANDARDS & GOVERNMENT SPECIFICATIONS ADOPTED BY MMC INTERNATIONAL CORP. FOR CERTIFICATION, MANUFACTURE, INSPECTION, CALIBRATION AND TESTING INTRINSICALLY SAFE APPROVALS BASEEFA British Approval Service for Electrical Equipment in Flammable Atmospheres Canadian Standards Association EECS Electrical Equipment Certification Service (U.K.), (License NO. 0685)
- Page 45 TEMPERATURE CONVERSION CHART °C = 5/9 (°F-32) °F = (9/5°C)+32 Table Example: Kelvin = °C +273.15 Rankine = °F +459.67 To Convert 1000°C to °F look up 1000 read left To Convert 1000°F to °C look up 1000 read right To °F to °C to °F...
- Page 46 Electrical Equipment in flammable atmospheres) in the United Kingdom. In order to maintain the validity of the approval, tape units can be repaired only by MMC or our authorized guarantee repair offices approved by FM, BASEEFA, CSA, SAA and/or NKK. We can not offer that approval; it must be given by the approval agency.
- Page 47 SINGAPORE BOND INSTRUMENTATION (S) PTE. LTD. 8 Gul Street 3 Singapore 2262 Telephone: 65-861-4279, 861-6749 Facsimile: 65-862-4062 AUSTRALIA PC MAXWELL & ASSOCIATES 15 Ocean View Avenue Red Hill South Victoria 3937 Australia Telephone: 059-89-2762 Facsimile: 059-89-2700 NETHERLANDS SGS NEDER LAND BV Puntweg 4 3208 LD SIJKENISSE BLGD 31 The Netherlands...
- Page 48 LIST OF CHEMICALS The following list of chemicals, although not all-inclusive, are known to attack PES, the material from which a portion of the sonic liquid level sensor is made. Prolonged submergence of the sensor should be avoided. After submergence in any of these chemicals, a through cleaning of the sensor head should be conducted to prolong sensor life.
- Page 49 P. C. Board Component Placement & LCD Assembly B-2401-72B Sub-Assembly, Hub Coverplate and P. C. Board) Factory Mutual & BASEEFA D-2562-1FRL Restricted Trimode Tape Assembly for use with Vapor Control Valve S-2300-1 Typical Installation Criteria for Zero Ullaging, MMC Vapor Control Valves...
Need help?
Do you have a question about the D-2401-2 and is the answer not in the manual?
Questions and answers