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Summary of Contents for Omega HHM27
- Page 1 OMEGA...
- Page 2 European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification. The information contained in this document is believed to be correct but OMEGA Engineering, Inc. accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.
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Page 3: Safety Information
SAFETY INFORMATION The following safety information must be observed to insure maximum personal safety during the operation at this meter: 1. Do not use the meter if the meter or test leads look damaged, or if you suspect that the meter is not operating properly. 2. -
Page 4: Specifications
SPECIFICATIONS Display: Liquid crystal display (LCD) with a maximum reading of 2500. Polarity: Automatic, positive implied, negative polarity indication. Overrange: "OL"or "-OL" is displayed. Low battery indication: the " " is displayed when the battery voltage drops below the operating level. Measurement rate: 2.5 times per second, nominal. - Page 5 DC VOLTS Ranges: 250mV,2.5V,25V,250V,600V Resolution: 100µV Accuracy: ±(0.25%rdg + 5dgt) on 250mV range ±(0.25%rdg + 1dgt) on other ranges Input impedance: >10MW Overload protection: 600VDC or AC rms AC VOLTS (50Hz - 500Hz) Ranges: 250mV,2.5V,25V,250V,600V Resolution: 1mV.(100µA on 250mV range) Accuracy: ±(0.75% of reading + 4dgts) on 2.5V to 600V no specification on 250mV range Input impedance: 10MW...
- Page 6 AC CURRENT (50Hz - 500Hz) Ranges: 250µA,2.5mA,25mA,250mA,2.5A,10A Resolution: 100nA Accuracy: ±(1.5%rdg + 2dgts) on µA,mA ranges ±(3.0%rdg + 2dgts) on A range Burden voltage: 325mV on µA,mA ranges 700mV on A ranges Input protection: 0.5A / 250V fast blow ceramic fuse 10A / 600V fast blow ceramic fuse RESISTANCE Ranges: 250W ,2.5KW ,25KW ,250KW ,2500KW ,25MW...
- Page 7 25 MILLI - VOLTS (DC/AC@50Hz - 500Hz) Resolution: 10µV Accuracy: ±(1.0%rdg + 10dgt) Input impedance: >1000MW Overload protection: 0.5A / 250V fast blow ceramic fuse CAPACITANCE (Autoranging) Ranges: 2.5nF,25nF,250nF,2.5µF,25µF Accuracy: ±(10%rdg + 10dgts) on 2.5n Frange(use REL) ±(3.0%rdg + 10dgts) on other ranges Overload protection: 500VDC or AC rms FREQUENCY (Autoranging) Ranges: 5.000Hz,50.00Hz,500.0Hz,5.000KHz,50.00KHz,...
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Page 8: Operation
OPERATION Before taking any measurements, read the Safety Information Section. Always examine the instrument for damage, contamination (excessive dirt, grease, etc.) and defects. Examine the test leads for cracked or frayed insulation. If any abnormal conditions exist do not attempt to make any measurements. - Page 9 RANGE Button Press (RANGE) button to select the Manual Range mode and turn off the "AUTO" annunciator. In the Manual Range mode, each time you press (RANGE) button, the range (and the input range annunciator) increments, and a new value is displayed. To exit the Manual Range mode and return to autoranging, press and hold down (RANGE) button for 2 seconds.
- Page 10 Voltage Measurements 1. Connect the red test lead to the "VW " jack and the black test lead to the "COM" jack. 2. Set the Function/Range switch to the desired voltage function. 3. Connect the test leads to the device or circuit being measured. 4.
- Page 11 6. Use caution when measuring 10 amps on A range for 60s, please waiting for 10 minutes for next measurement of 10 amps for safety reason. Resistance Measurements 1. Set the Function/Range switch to W / position. 2. Remove power from the equipment under test. 3.
- Page 12 Continuity Measurements 1. Set the Function/Range switch to W / position. 2. Turn off power to the circuit under test. External voltage across the components causes invalid readings. 3. To toggle between the W /continity/diode modes, press SELECT button. 4. Connect the test leads to the two points at which continuity is to be tested. The buzzer will sound if the resistance is less than approximately 100W .
- Page 13 Capacitance Measurements 1. Set the Function/Range switch to the desired " " range. Press (RELD) to zero the display. 2. Dischange capacitors before trying to measure it. 3. Connect the "+" lead to the "VW " jack and the "-" lead to the "COM" jack. 4.
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Page 14: Maintenance
MAINTENANCE WARNING Remove test leads before changing battery or fuse or performing any servicing. Battery Replacement Power is supplied by a 9 volt "transistor" battery. (NEDA 1604, IEC 6F22). The " " appears on the LCD display when replacement is needed. To replace the battery, remove the two screws from the back of the meter and lift off the battery case. - Page 15 CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a "Basic Component" under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any...
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Page 16: Data Acquisition
Where Do I Find Everything I Need for Process Measurement and Control? OMEGA...Of Course! TEMPERATURE DATA ACQUISITION PRESSURE/STRAIN AND FORCE HEATERS FLOW/LEVEL ENVIRONMENTAL MONITORING AND CONTROL pH/CONDUCTIVITY M-2893/0799...
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