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Summary of Contents for Morehouse UCM
- Page 1 PM-5201 Rev. 11/2021 ISO/IEC 17025 / ANSI/NCSLI Z540.3 Accredited Operation and Instruction Manual Universal Calibrating Machine (UCM) info@mhforce.com Morehouse Instrument Company, Inc. P: (717) 843-0081 1742 Sixth Ave., York, PA 17403-2675 USA www.mhforce.com F: (717) 846-4193...
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Page 2: Table Of Contents
5.5 Rust Prevention ............... . . 28 Morehouse Instrument Company, Inc. - Page 3 6.5 Drawings & Parts Lists ..............31 7. Accessories & Adapters for use with Morehouse Universal Calibrating Machines..... . 34 Morehouse Instrument Company, Inc.
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Page 4: Introduction
1.2 Functional Operation The Morehouse Universal Calibrating Machine is a device for simultaneously applying a force to a high accu- racy calibration reference standard, and the device to be calibrated (unit under test). The force is produced by a hydraulic jack activated by a manually operated pump, specially designed to perform precise and accurate calibration work. -
Page 5: Design
Since compression reference standards are less expensive than dual mode tension and compression type standards, the cost of reference standards for use with a Morehouse Universal Calibrating Machines is less than for other types of machines. -
Page 6: Overview
Hand Pump Assembly Unit Under Test in Tension Momentary Positioning Switch Lower Machine Platen Adjustable Foot Figure 3: Morehouse Universal Calibrating Machine 100,000 lbf (500 kN) Capacity (with motorized adjustable yoke platen) Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 6 1742 Sixth Ave., York, PA 17403-2675 USA... -
Page 7: Description
Universal Calibrating Machine (UCM) Manual (PM-5201) 2. Description 2.1 General The Morehouse Universal Calibrating Machine is comprised of three principal assemblies, which are described in this section: 1- Loading Frame 2- Hydraulic Jack 3- Loading Power Supply 2.2 Construction Overall construction of the calibrating machine is illustrated by the outline drawing shown in Figure 4. Dimen- sions are indicated for the various standard capacity machines in Table 1 and 2. - Page 8 = M for manual or A for automated • y = D for domestic or E for export Referenced dimensions are configured with the use of Morehouse load cells as the standards. Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 8 1742 Sixth Ave., York, PA 17403-2675 USA...
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Page 9: Hydraulic Jack Assembly
1” (25.4 mm) maximum. Hydraulic pressure at capacity load is approximately 4,500 psi (31 026 kPa). 2.4 Loading Power Supply A hydraulic power system is required to supply, maintain, and adjust the hydraulic fluid pressure in a UCM hydraulic jack in order to provide various calibration loads. Morehouse provides three optional hydraulic power... - Page 10 The basic and low-cost system to provide hydraulic pressure for a UCM is a Morehouse hand pump (Figure 5). When this system is purchased with a UCM, the hydraulic jack is activated by a hand pump assembly that ad- vances the ram quickly, then more slowly until the desired load is achieved. The high/low operation is switched manually, and can be switched at any desired load.
- Page 11 It is available for use with calibrating machines of capacities 60,000 lbf (250 kN) and higher. The hydraulic fluid flow for UHP units is adjusted by Morehouse based on the capacity and size of the machine. The operator uses the momentary switch in front of the unit to activate the electric motor and run the hydraulic pump.
- Page 12 The Morehouse Auxiliary Hydraulic Screw Pump is a manual hydraulic power system that is specifically de- signed to adjust and maintain the calibration force in a UCM at very fine level. This optional add-on gives the operator exceptional control over the calibration force and enables accurate calibration at any desired force.
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Page 13: Preparation For Use
Note: Be careful not to run the upper yoke platen against the stops near the end of the threads of the tension tie bars as this may damage the calibrating machine. Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 13 1742 Sixth Ave., York, PA 17403-2675 USA... -
Page 14: Installation Of A Reference Standard
3.3 Installation of a Reference Standard A reference standard, which is normally a load cell, must be installed in a Morehouse UCM before the using the machine. The reference standard is used to measure the applied force and calibrate the unit under test. - Page 15 If the capacity of the reference standard load cell is higher than 100,000 lbf (500 kN), then the kit shown in Figure 9 can be used to install the standard in a UCM. The kit contains the following: 1- Top Block Compression Adapter...
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Page 16: Preparing The Hand Pump For Use
If this occurs, then the system will need to be bled of the entrapped air. The procedure for bleeding the entrapped air is outlined in Section 6.2. Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 16 1742 Sixth Ave., York, PA 17403-2675 USA... -
Page 17: Operation
Precision test instruments usually are calibrated in a location where the temperature is maintained within certain prescribed limits, and where the calibration standard and test instrument are not subjected to sudden changes in temperature. It is recommended, therefore, that the Morehouse Universal Calibrating Ma- chine be installed and used where such conditions prevail. -
Page 18: Compression Setup
4.2 Compression Setup The Morehouse Universal Calibrating Machine is setup for compression calibration in two steps: 1. Positioning the reference standard, such as a Morehouse Proving Ring or Morehouse Load Cell 2. Positioning the unit under test Prior to use, the machine should be set on a solid surface and leveled by adjusting the feet. Selecting a location where an even temperature prevails will facilitate the calibration. - Page 19 To more easily maintain proper axial alignment, it is recommended that a reference standard with a ball seat be used whenever possible. Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 19 1742 Sixth Ave., York, PA 17403-2675 USA...
- Page 20 Proper acces- sories, such as alignment bearing blocks or soft steel pads used with hardened steel bearing plates should be used to decrease the unit stress to safe levels. Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 20 1742 Sixth Ave., York, PA 17403-2675 USA...
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Page 21: Tension Setup
(pulling rods), as shown in Figure 10b. Tension members supplied with the test instrument may suffice for this calibration. Moreover, the Morehouse Quick-Change Tension Members can save your time by making connections easier and more efficient. Faster testing and calibration turn-around can improve the bottom line in your operation. - Page 22 (UCM) Manual (PM-5201) Quick-Change Tension Member A single Tension Member Assembly is installed into the UCM and multiple tension adapters, both male and female, are interchanged to attached the desired size instrument. A single pair of Tension Members can re-...
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Page 23: Hand Pump Operation
Vernier piston and maintain a precise force. We recommend that the Vernier piston adjustment be kept at its mid-position of travel to allow small increments of force to be increased or decreased. Experience will dic- Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 23 1742 Sixth Ave., York, PA 17403-2675 USA... -
Page 24: Universal Hydraulic Pump
An optional electric motor driven pump is available for use with calibrating machines with capacities of 60,000 lbf (250 kN) and higher. This unit is referred to as the Morehouse Universal Hydraulic Pump. The power control replaces the hand pump, thus eliminating the effort required to operate the hand pump. To use the power control please refer to the operating instructions supplied with it. -
Page 25: Tare Load
(or bearing plate) that is used with the reference standard and the upper yoke. b) Remove the load ball (or bearing plate) from the top of the reference standard, and read the no - load de- flection of the reference standard. Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 25 1742 Sixth Ave., York, PA 17403-2675 USA... - Page 26 In calibrating test instruments with a rated capacity substantially less than that of the calibrating machine, and with a rated accuracy of 1% or less, the tare load effect usually must be taken into consideration. Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 26 1742 Sixth Ave., York, PA 17403-2675 USA...
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Page 27: Service, Inspection, Maintenance, & Lubrication
(39) has failed and must be replaced. The outlet in the pump body is tapped with 9/16”-18 NF threads and SAE ORB-6 (15). A firm joint will prevent leakage. If leakage develops, do not tighten the fitting excessively. Replace the o-ring seal. Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 27 1742 Sixth Ave., York, PA 17403-2675 USA... -
Page 28: Lubrication
The grease used should conform to NGLI 2 specifications. UCM’s above 300,000 lb capacity utilize a gearbox which requires maintenance, please refer to manufacturers guidelines for the applicable gearbox used on your machine. -
Page 29: Disassembly, Repair, And Reassembly
The parts list and drawing for the hand pump is included with this manual. Parts lists and drawings for Morehouse Universal Calibrating Machines and hydraulic jacks are supplied with the calibrat- ing machine. Recommendations regarding the disassembly and reassembly of the hand pump are included in this section. -
Page 30: Service Instructions For Hydraulic Hand Pump
All parts of the calibrating machine, except o-rings, are designed to last indefinitely in normal use. If inadver- tent misuse or accidental damage occurs, then repair may be accomplished by replacing the damaged parts. Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 30 1742 Sixth Ave., York, PA 17403-2675 USA... -
Page 31: Drawings & Parts Lists
If copies of drawings and parts lists of a spe- cific capacity calibrating machine or hydraulic jack are required, contact Morehouse to request the the appro- priate drawings. When ordering repair parts, please include the serial number and capacity of the calibrating machine (as engraved on the nameplate) and state the part number, name, and quantity required. - Page 32 T-406 Drip Pan Attaching Screw T-167 Drip Pan Attaching Washer T-110 Relief Valve Stem T-109 Relief Valve Body T-194 Poppet Valve Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 32 1742 Sixth Ave., York, PA 17403-2675 USA www.mhforce.com Rev. 11/2021...
- Page 33 Piston Back-Up Ring (T-159) T-107 Guide Rod 01-90003 Body Attaching Screw IGT-10 Retaining Plug IGT-34 Vernier Piston 10-90000 Seal Ring Piston Morehouse Instrument Company, Inc. Phone: (717) 843-0081 Page 33 1742 Sixth Ave., York, PA 17403-2675 USA www.mhforce.com Rev. 11/2021...
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Page 34: Accessories & Adapters For Use With Morehouse Universal Calibrating Machines
Universal Calibrating Machine (UCM) Manual (PM-5201) 7. Accessories & Adapters for use with Morehouse Universal Calibrating Machines Because of the physical differences in the many types of test instruments that may be calibrated in the More- house Universal Calibrating Machine, many different types of accessories and adapters are available. For more...
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