User Manual

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Operation Manual

for MultiCal Hg/PSI Pressure Module

MultiCal

Summary of content (12 pages)

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MultiCal Operation Manual for MultiCal Hg/PSI Pressure Module
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Contents Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Overview  1 —— Overview INTRODUCTION MultiCal pressure modules are used to measure pneumatic or hydraulic pressures. They can also be used to measure vacuum. MultiCal modules don’t display pressure, since they only have an electrical output. Instead, the modules convert pressure to millivolts. Modules are used with devices capable of measuring DC millivolts, such as a digital multimeters or oscilloscopes.
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—— Operation  2 Operation FUNCTIONS To ensure safe and accurate operation, please be familiar with the following operations and functions. !!WARNING: Severe injury or damage can occur through improper use of pressure instruments! Do not exceed recommended pressure limits of tubing and fittings. Be certain all pressure connections are secured. Never disconnect pressure instrumentation without first relieving system pressure.
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—— Operation  3 PRESSURE MEASUREMENT Follow this procedure to correctly use the MultiCal pressure module. 1 Plug the MultiCal directly into the voltage input terminals of the multimeter or with the patch cord set. The patch cord set consists of a 48" cord with double banana plugs on each end and a double banana jack splice. Plug the splice into the MultiCal and the patch cord into the splice. Plug the other end of the patch cord into the multimeter.
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—— Calibration  4 Calibration RECOMMENDED EQUIPMENT A calibration cycle of 1 year is recommended to maintain the MultiCal within specifications. Instrument Minimum Specification Pressure Standard ± 0.025% of Reading Digital Voltmeter ± 0.025% of Reading with a 10MΩ input impedance You do not need to use a reference multimeter if the MultiCal will be used with only one multimeter. In those cases, your overall accuracy may be better if it is calibrated as a set with the matching multimeter.
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Calibration  5 - Linearity Coarse Zero R1 Fine Zero R12 R15 inHg psi Potentiometer locations. 6 Check the inches of mercury pressure points shown in the following table. Adjust R12 if necessary to bring the readings to within the tolerances shown in the table. Readings in mV @ 23°C ±5°C True Pressure Acceptable Output (mV) 15 inHg 14.975 to 15.025 30 inHg 29.960 to 30.040 250 psi 249.73 to 250.27 500 psi 499.48 to 500.52 7 Set the switch on the MultiCal to the PSI position.
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Specifications  6 Specifications —— The following specifications apply at 23°C, ±5°C for 1 year after calibration, and when used with measuring devices having 10MΩ input impedance, or shunted so that their input impedance is 10MΩ. Also, the module must be "zeroed" prior to taking measurements to achieve the pressure specifications. PRESSURE Pressure Range Accuracy 0 to 30 inHg �� ±(0.1% of Reading + 0.
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—— —— Specifications  7 TEMPERATURE DERATING Add to Basic Accuracy Specification. °C = ambient temperature. Temperature Range Derating 28 to 55°C �� (0.016%/°C) x (°C – 28°C) 18 to 28°C �� No Derating 0 to 18°C �� (0.048%/°C) x (18° – °C) -10 to 0°C �� (0.
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—— Specifications  8 EC DECLARATION OF CONFORMITY DECLARATION OF CONFORMITY According to ISO/IEC 17050-1:2010 Manufacturer’s Name: Crystal Engineering Corporation An AMETEK Inc.
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—— ——— — —— Support  9 Support CONTACT US Phone �� (805) 595-5477 Toll-Free �� (800) 444‑1850 Fax �� (805) 595-5466 Email �� crystal@ametek.com Web �� crystalengineering.