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Summary of Contents for halstrup-walcher EMA 200
- Page 1 Instruction Manual EMA 200 Digital Pressure Gauge halstrup-walcher GmbH Stegener Straße 10 D-79199 Kirchzarten, Germany Phone: +49 (0) 76 61/39 63–0 Fax: +49 (0) 76 61/39 63–99 E-Mail: info@halstrup-walcher.com Internet: www.halstrup-walcher.com Document 7100.004074 Version 3.2 07/2012...
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Page 2: Table Of Contents
EMA 200 Instruction Manual Table of Contents Purpose of instruction manual ....................3 Conformity ..........................3 Safety precautions ......................... 4 Appropriate use ........................4 Troubleshooting, maintenance, repairs, disposal ..............4 Symbols ..........................5 Instrument description ......................6 Functions ..........................6 Instrument controls ......................... -
Page 3: Purpose Of Instruction Manual
EMA 200 Instruction Manual 1 Purpose of instruction manual This instruction manual describes the features of the EMA 200 digital pressure gauge and provides guidelines for its use. Improper use of this instrument or failure to follow these instructions may cause injury or equipment damage. -
Page 4: Safety Precautions
EMA 200 is highly suitable for use in laboratory applications. Always observe the operating requirements—particularly the permissible supply voltage—indicated on the rating plate and in the “Technical data”... -
Page 5: Symbols
EMA 200 Instruction Manual Symbols The symbols given below are used throughout this manual to indicate instances when improper operation could result in the following hazards: WARNING! This warns you of a potential hazard that could lead to bodily injury up to and including death if the corresponding instructions are not followed. -
Page 6: Instrument Description
EMA 200 Instruction Manual 4 Instrument description 4.1 Functions The EMA 200 is a battery-operated, digital pressure gauge for measuring overpressure, vacuum and differential pressure of non-aggressive gases. Operating range is 200 Pa to 200 kPa. Because it is robust, easy-to-use and includes an analogue output, this instrument is especially suitable for maintenance, customer service and record-keeping for heating, ventilation and air-conditioning units. -
Page 7: Start-Up
5.2 Pneumatic connections Connect the EMA 200 to the pressure source at the overpressure port (+) when measuring overpressure, at the vacuum port (-) for measuring vacuum pressure, or at both ports (making certain to connect the + and - ports appropriately) for measuring differential pressure. -
Page 8: Changing Pressure Units
EMA 200 Instruction Manual Display Display mode arrow arrow normal instrument displays current measurement pressure value hold instrument displays pressure value prior to switching modes instrument displays the largest measured pressure instrument displays the smallest measured pressure 6.3 Changing pressure units The instrument allows the user to toggle between a number of different units of pressure. -
Page 9: Analogue Output
EMA 200 Instruction Manual 6.5 Analogue output The EMA 200 has a 0...2V analogue output, allowing it to read out an output voltage proportional to the pressure. When configuring the instrument, users may set the pressure at which the instrument will read out an output voltage of 2.0V. -
Page 10: Temperature Display
EMA 200 Instruction Manual 7.2 Temperature display The symbol '°C' is shown in the bottom line of the display and the current status of this switch (on or off) is shown in the top line. Users may change the status by depressing the... -
Page 11: Pitot Factor(Not Available With 200Kpa Range)
EMA 200 Instruction Manual 7.5 Pitot factor(not available with 200kPa Range) This step, represented by the 'Pit' symbol in the bottom line of the display, allows the user to enter the factor for a pitot tube. Selects which digit of the display is to be changed (digit will flash). -
Page 12: Auto On/Off
7.9 Auto On/Off The EMA 200 has an auto on/off function that can be used to avoid consuming battery power unnecessarily. This feature (which can be toggled on and off) will power down the instrument after 20 minutes if the pressure does not change during this time and no buttons are pressed. -
Page 13: Default Settings
EMA 200 Instruction Manual 7.10 Default settings This parameter is used to reset the instrument to its default settings if desired. The bottom line of the display will show the code 'rES.' Turns this function on (yes) or off (no). -
Page 14: Troubleshooting
EMA 200 Instruction Manual 8 Troubleshooting Error description Potential cause Corrective action display does not appear dead battery install new battery use a 9V IEC 6 LR 61 battery instrument returns false zero point has shifted adjust zero point values (see section 4.4) -
Page 15: Technical Data
EMA 200 Instruction Manual 9 Technical data 0.5% of FVM at 22°C linearity: temp.-dependent drift, 0.04%/°C of FVM measurement range 0.04%/°C of FVM (for gradual changes in temp.-dependent drift, offset: temperature) 10 x FVM (for ranges 20 kPa) overload range 2 x FVM (for ranges >... - Page 16 EMA 200 Instruction Manual weight: approx. 300 g, including battery miscellaneous: The automatic off function switches the instrument off after it has been "quiet" for approx. 20 minutes. This "quiet time" is interrupted whenever the pressure changes by more than 2% of the final value or the operator presses a button.
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Page 17: Drawings
EMA 200 Instruction Manual 10 Drawings analogue output 3,5 mm jack...