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Martel LC-110 Reference Manual

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LC-110/H
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Summary of Contents for Martel LC-110

  • Page 1 LC-110/H Reference Manual GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 2: Table Of Contents

    1. Introduction ........1 1.1 Customer Service .

  • Page 3: Introduction

    Introduction The Martel LC-110 and LC-110H are mA (loop) calibrators designed to be simple to use and to offer the highest accuracy of any loop calibrator in their class. The LC-110H differs from the standard LC-110 in that it incorporates HART communications and supports a select subset of the HART universal and common practice commands.

  • Page 4: Standard Equipment

    1.2 Standard Equipment Check to see if your calibrator is complete. It should include: • C alibrator • 6 x AAA batteries (installed) • T est leads - The LC-110 is supplied with one set of leads with alligator clips installed - T he LC-110H is supplied with two sets of tests. One set with alligator clips and the other set with mini-grabber style ends • Owner’s Manual...
  • Page 5 PE Ground Hot Surface (Burn Hazard) Read the User’s Manual (Important Information) Canadian Standards Association The following definitions apply to the terms “Warning” and “Caution”. • “ Warning” identifies conditions and actions that may pose hazards to the user. • “ Caution” identifies conditions and actions that may damage the instrument being used. Use the calibrator only as specified in this manual, otherwise injury and damage to the calibrator may occur. Warning To avoid possible electric shock or personal injury: • D o not apply more than the rated voltage. See specifications for supported ranges.
  • Page 6 • I nspect the test leads for damaged insulation or exposed metal. Check test leads continuity. Replace damaged test leads before you use the calibrator. • W hen using the probes, keep your fingers away from the probe contacts. Keep your fingers behind the finger guards on the probes. • C onnect the common test lead before you connect the live test lead. When you disconnect test leads, disconnect the live test lead first. • D o not use the calibrator if it operates abnormally. Protection may be impaired. When in doubt, have the calibrator serviced. • Do not operate the calibrator around explosive gas, vapor, or dust. • D isconnect test leads before changing to another measure or source function. • W hen servicing the calibrator, use only specified replacement parts. • T o avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator appears.

  • Page 7: Calibrator Interface And Operation

    Mode Calibrator w/HART™ 20mA = 100.00% Source 0.00% 4.000mA Cursor MARTEL ELECTRONICS Step / Ramp Enable 100% Key: Sets Output to 20mA 100% 25% Key: Steps 4, 8, 12, 16, 20mA Backlight On / Off 0% Key: Sets Output to 4mA...

  • Page 8: Milliamp Source

    4 to 20mA SCADA SYSTEM ETC. ( – LC-110H Precision Loop Calibrator w/HART™ Source 0.00% 4.000mA MARTEL ELECTRONICS 100% MENU EXIT Figure 2 • P ress the knob to move the decade cursor. • R otate the knob to increment or decrement the output in steps indicated by the selected decade. • U se the 3 percent keys to directly set the output to preset values. • U se the step/ramp key to select and stop these advanced modes which are described in section 5.1. When automatic step or ramp...

  • Page 9: Milliamp Simulate

    ( – LC-110H Precision Loop Calibrator w/HART™ Simulate 0.00% 4-20mA 4.000mA INPUT DEVICE ( – MARTEL ELECTRONICS 100% MENU EXIT Figure 3 • P ress the knob to move the decade cursor. • R otate the knob to increment or decrement the output in steps indicated by the selected decade. • U se the 3 percent keys to directly set the output to preset values. • U se the step/ramp key to select and stop these advanced modes which are described in section 5.1. When automatic step or ramp...

  • Page 10: Milliamp Measure Without 24V Power

    Figure 4 shows the main display and typical connections for this mode. 4-20mA 4 to 20mA OUTPUT DEVICE ( – LC-110H Precision Loop Calibrator w/HART™ Measure 0.00% 4.000mA MARTEL ELECTRONICS 100% MENU EXIT Figure 4 • P ress MENU/EXIT to enter the main menu described in section 3. • T he text ‘250Ω’ text is shown in the lower right corner when the HART resistor has been enabled on the Setup Menu, section 4.4. GlobalTestSupply www. .com Find Quality Products Online at:...

  • Page 11: Milliamp Measure With 24V Power

    The mode is useful for powering a transmitter without the need for a separate power supply. Figure 5 shows the main display and typical connections for this mode. LC-110H Precision Loop Calibrator w/HART™ Measure 24V 0.00% 4.000mA MARTEL ELECTRONICS 100% MENU EXIT Figure 5 • P ress MENU/EXIT to enter the main menu described in section 3. • T he text ‘250Ω’ text is shown in the lower right corner when the HART resistor has been enabled on the Setup Menu, section 4.4. 2.5 Volts Measure In the Volts Measure mode, the calibrator displays the loop voltage.

  • Page 12: Main Menu

    VOLTAGE OUTPUT DEVICE ( – LC-110H Precision Loop Calibrator w/HART™ Measure 10.000V MARTEL ELECTRONICS 100% MENU EXIT Figure 6 3. Main Menu The Main Menu is used to select the primary operating mode of the calibrator, to access the calibrator setup functions, and to enter HART mode. mA Source mA Simulate mA Measure...

  • Page 13: Calibrator Setup Menu

    4. Calibrator Setup Menu The calibrator setup menu consists of two screens. The second screen is reached by selecting ‘Other Parameters’ on the first screen. Auto Ramp Time Auto Step Time Valve Test HART 250Ω Resistor Other Parameters mA Span Contrast Auto Shutdown Time HART Write Enable Rotate the knob to select an action by moving the reverse video highlight up and down. Press the knob to perform the selected action. Press MENU/EXIT to return to the main display without performing an action. Note: The ‘HART Write Enable’ menu item only appears on the LC-110H device. 4.1 Setting Auto Ramp Time Auto Ramp Time 10 SEC.

  • Page 14: Setting Auto Step Time

    4.2 Setting Auto Step Time Auto Step Time 10 SEC. Press & hold to Save This function sets the step interval time for the mA Auto Step feature described in more detail in section 5.1. The value can be set from 5 to 300 seconds. Rotate the knob to adjust the value. Press and hold the knob to save it. Press MENU/EXIT to restore the previous value and return to the main display. 4.3 Enabling Valve Test Valve Test Enable OFF ON This function enables and disables the valve test feature described in more detail in section 5.2. Rotate the knob to move the reverse video highlight to the desired selection. Press the knob to save the highlighted selection. Press MENU/EXIT to restore the previous selection and return to the main display.

  • Page 15: Enabling The Hart Resistor

    4.4 Enabling the HART Resistor HART Resistor Enable OFF ON This function enables and disables the HART resistor described in more detail in section 5.3. Rotate the knob to move the reverse video highlight to the desired selection. Press the knob to save the highlighted selection. Press MENU/EXIT to restore the previous selection and return to the main display. 4.5 Selecting mA Span mA Span Selection 4 to 20 mA 0 to 20 mA This function selects the mA span used to calculate the percent of span field on the main display, and to set the value used by the 0% key.

  • Page 16: Configuring Auto Shutdown

    text modes. Press the knob to save the contrast value. Press MENU/ EXIT to restore the previous selection and return to the main display. 4.7 Configuring Auto Shutdown Auto Shutdown Time 10 MIN. This function sets or disables the time before the unit automatically shuts down if the keypad is not used. The value can be set to ‘Disabled’, or from 1 to 30 minutes. Rotate the knob to adjust the value. Press and hold the knob to save it. Press MENU/EXIT to restore the previous value and return to the main display. 4.8 HART Write Enable This setting is available only on the LC-110H. It protects all functions on the Modify Setup menu, and the Device Diagnostic, Trim 4mA, Trim 20mA, Set Fixed Output, and PV Zero functions. The default setting is “ON”, but may be turned off if the user wants to protect against unauthorized use. HART Write Enable OFF ON Rotate the knob to move the reverse video highlight to the desired selection. Press the knob to save the highlighted selection. Press MENU/EXIT to restore the previous selection and return to the main...

  • Page 17: Advanced Features

    Password Press & hold to Save Press the knob to move the decade cursor. Rotate the knob to adjust the value in steps indicated by the decade selected. Press and hold the knob to save the write enable setting. Press MENU/EXIT to restore the previous HART enable selection and return to the main display. The write enable setting is saved only when the correct password is entered. Otherwise an error message is displayed. 5. Advanced Features The calibrator has several advanced features that are available through the Calibrator Setup Menus. How the features are enabled and what they do is described below.

  • Page 18: Valve Test

    5.1.2 Automatic Stepping and Ramping 1. U se the main menu to set the calibrator to source or simulate current. 2. T he calibrator has separate Auto ramp and step times. Use the menu system to set the ramp or step time as described in section 4.1 or 4.2. 3. P ress the “Step/Ramp” key once to continually step the output from 0% of span to 100% of span and back in increments of 25% of span at the specified interval. Press the “Step/Ramp” once more to go to auto ramp. P ress one of the percent keys, or the “Step/Ramp” twice more, to turn off the auto step and ramp.

  • Page 19: Hart Device Communications

    6.1. HART Connection Diagrams 6.1.1 In Circuit, External Loop Power In “mA Measure” mode the LC-110H is in circuit and loop power is supplied externally as shown below. SUPPLY ( – 4 to 20mA LC-110H Precision Loop Calibrator w/HART™ Measure 0.00% 4.000mA 250Ω MARTEL ELECTRONICS 100% MENU EXIT Note: In this situation the 250Ω HART resistor is enabled. If your loop already has 250Ω, do not enable the HART resistor. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 20 In “mA Measure with 24V” mode the LC-110H is in circuit and the loop power is supplied by the LC-110H as shown below. ( – LC-110H Precision Loop Calibrator w/HART™ Measure 24V 0.00% 4.000mA 250Ω MARTEL ELECTRONICS 100% MENU EXIT Note: In this situation the 250Ω HART resistor is enabled. If your loop already has 250Ω, do not enable the HART resistor. 6.1.3 Across Circuit, Communicator Only In “Communicator Only” mode the LC-110H is across the circuit and the loop power is supplied externally as shown below. 4 to 20mA SUPPLY RL≥250Ω...

  • Page 21: Communications Setup And Selection

    6.2 Communications Setup and Selection For all main display operating modes except mA measure with 24V or volts measure, the operating mode is set to mA measure upon entry of the HART Comm. Menu. The operating mode remains the same as the main display when it is mA measure with 24V. If volts measure was selected in the main display, the menu will default to communicator mode only and the 250Ω resistor selection shows “n/a”. The 250Ω resistor selection is not editable in communicator mode. On exit neither the mode nor the resistor will change from the last selections made in the HART Communications Menu. The mode and 250Ω...
  • Page 22 Rotate the knob to move the reverse video highlight to the desired selection. Press the knob to change the mode to the highlighted selection and return to the Setup and Selection display in section 6.2. Press MENU/EXIT to restore the previous selection and return to the Setup and Selection display in section 6.2. In “mA Measure” mode the LC-110H is in circuit and loop power is supplied externally as shown in section 6.1.1. In “mA Measure with 24V” mode the LC-110H is in circuit and the loop power is supplied by the LC-110H as shown in 6.1.2. In “Communicator Only” mode the LC-110H is across the circuit and the loop power is supplied externally as shown in 6.1.3. The 250Ω Resistor selection will default to “n/a”. 6.2.2 Select 250Ω Resistor 250Ω Resistor OFF ON Rotate the knob to move the reverse video highlight to the desired selection. Press the knob to change the resistor to the highlighted selection and return to the Setup and Selection display in section 6.2. Press MENU/EXIT to restore the previous selection and return to the Setup and Selection display in section 6.2. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 23: Connecting To A Hart Device

    6.3 Connecting to a HART Device Before any operation may be performed with a HART device, it must be located on the loop. This is done by polling all of the possible device addresses and selecting a device from those addresses that respond. If a HART protocol revision 5 or earlier device is found on the loop, polling stops at poll address 15, otherwise it continues to poll address 63. Polling stops after a total of 10 devices are found on the loop. If multiple devices are found on the loop, a tag list is displayed for selecting the device of interest. If only one device is found on the loop, it becomes the device of interest by default.
  • Page 24 6.3.2 Tag Selection The tag selection display lists all of the long tag names found during polling. Tag names may span two lines if necessary to show all of the text. If the long tag name is not available, or it is blank, the short tag name is used. If the short tag name is blank, the text “Poll address x” is used. If necessary, the display spans more than one screen. The lower left corner contains the symbol  when additional screens follow the present one, the symbol ...

  • Page 25: Disconnect

    When data acquisition is complete, the Function Select Menu described in section 6.5 is displayed. 6.4 Disconnect This display is shown before returning to the main display to allow the user to disconnect the LC-110H from the loop. Disconnect from Loop Press Menu/Exit to exit HART mode 6.5 Function Select Menu Tag Name ♥ Display Setup & Data Modify Setup Trim, Set, & Zero Device Diagnostic Data Log & Config Log The tag name is truncated to fit on one line if necessary. The ♥ symbol in the upper right corner flashes to indicate a working HART connection.

  • Page 26: Modify Setup

    Sample Screen Image PT12234 ♥ PT12234 PV Unit: inWC 68F PV: 226.0 inWC PV mA: 13.016 mA PV %: 56.35 %  The tag name is truncated to fit on one line if necessary. The ♥ symbol in the upper right corner flashes to indicate a working HART connection. Each screen contains up to 6 items of data. An item may span more than one line if necessary to display the full text. If a data item is not supported in the HART device, it is marked “n/a”, not available. Data items that change dynamically in the HART device are updated as often as possible on the screens.
  • Page 27 Rotate the knob to move the reverse video highlight to the desired action. Press the knob to select the highlighted action and proceed to the corresponding display described in section 6.7.1 through 6.7.4. Press MENU/EXIT to return to the Function Select menu in section 6.5. 6.7.1 Write LRV A warning to change the loop to MANUAL before proceeding is displayed. Press the knob to proceed. Press MENU/EXIT to return to the Modify Setup menu in section 6.7. The present LRV value and units are displayed.. Tag Name ♥ Write LRV: degrees F 300.5 Press & hold to Write The tag name is truncated to fit on one line if necessary. The ♥ symbol in the upper right corner flashes to indicate a working HART connection. • Press the knob to move the decade cursor. • R otate the knob to increment or decrement the value in steps indicated by the selected decade. • P ress and hold the knob to send the new value to the HART device, remaining on this display. An error is displayed if the HART device rejects the value for any reason.
  • Page 28 Tag Name ♥ Write URV: degrees F 300.5 Press & hold to Write The tag name is truncated to fit on one line if necessary. The ♥ symbol in the upper right corner flashes to indicate a working HART connection. • P ress the knob to move the decade cursor. • R otate the knob to increment or decrement the value in steps indicated by the selected decade. • P ress and hold the knob to send the new value to the HART device, remaining on this display. An error is displayed if the HART device rejects the value for any reason. • P ress MENU/EXIT to return to the Modify Setup menu in section 6.7. A reminder to change the loop to AUTOMATIC is displayed first.
  • Page 29 The tag name is truncated to fit on one line if necessary. The ♥ symbol in the upper right corner flashes to indicate a working HART connection. • R otate the knob to move the reverse video highlight to the desired unit. • P ress and hold the knob to send the new value to the HART device, returning to the Modify Setup menu after displaying a reminder to change the loop to AUTOMATIC. An error is displayed if the HART device rejects the value for any reason. • P ress MENU/EXIT to return to the Modify Setup menu in section 6.7. A reminder to change the loop to AUTOMATIC is displayed first. 6.7.4 Modify Tags, Msg, Descr Select the item to be modified from the following menu.

  • Page 30: Trim, Set, & Zero Menu

    The character selected for change is indicated by an underline cursor. Short tag is up to 8 characters long from a limited character set that does not include lower case. Long tag is up to 32 characters long from the full character set. Descriptor is up to 16 characters long from a limited character set that does not include lower case. Message is up to 32 characters long from a limited character set that does not include lower case. • R otate the knob to modify the selected character by scrolling through the available character set. • P ress and hold the knob to send the new value to the HART device, returning to the Modify Setup menu. An error is displayed if the HART device rejects the value for any reason.
  • Page 31 Rotate the knob to move the reverse video highlight to the desired action. Press the knob to select the highlighted action and proceed to the corresponding display described in sections 6.8.1 through 6.8.4. Press MENU/EXIT to return to the Function Select menu in section 6.5. 6.8.1 Trim 4 mA If the operating mode is ‘Communicator Only’, this function is not available and an error message is displayed instead of the following screens. A warning to change the loop to MANUAL before proceeding is displayed. Press the knob to proceed. Press MENU/EXIT to return to the Trim, Set & Zero menu in section 6.8. While the HART device is changed to fixed output mode, an information display is shown. An error is displayed if the HART device rejects the mode change command for any reason. Once the mode change is successful, the following is displayed. Tag Name ♥ Trim D/A at 4 mA LC110H: 4.065 mA...
  • Page 32 6.8.2 Trim 20 mA If the operating mode is ‘Communicator Only’, this function is not available and an error message is displayed instead of the following screens. A warning to change the loop to MANUAL before proceeding is displayed. Press the knob to proceed. Press MENU/EXIT to return to the Trim, Set & Zero menu in section 6.8. While the HART device is changed to fixed output mode, an information display is shown. An error is displayed if the HART device rejects the mode change command for any reason. Once the mode change is successful, the following is displayed. Tag Name ♥ Trim D/A at 20 mA LC110H: 19.965 mA Press knob to trim The tag name is truncated to fit on one line if necessary. The ♥ symbol in the upper right corner flashes to indicate a working HART connection.
  • Page 33 While the HART device is changed to fixed output mode, an information display is shown. An error is displayed if the HART device rejects the mode change command for any reason. Once the mode change is successful, the following is displayed. Tag Name ♥ LC110H: 4.065 mA Select fixed output: 4.000 mA Press & hold to Send The tag name is truncated to fit on one line if necessary. The ♥ symbol in the upper right corner flashes to indicate a working HART connection. The screen is used to set a fixed output and monitor the result with the LC-110H measurement. The measurement is updated once a second.

  • Page 34: Device Diagnostic

    When the operating mode is ‘Communicator Only’, the mA measurement is not available and the message ‘mA not available’, ‘in Comm. Only mode’ is displayed instead. Tag Name ♥ Set PV input to zero LC110H: 4.065 mA Press knob to zero The tag name is truncated to fit on one line if necessary. The ♥ symbol in the upper right corner flashes to indicate a working HART connection. • P ress the knob to zero the HART device, remaining on this display to evaluate the result. An error is displayed if the HART device rejects the zero command for any reason. • P ress MENU/EXIT to return to the Trim, Set & Zero menu in section 6.8. A reminder to restore the PV process input signal to normal operating configuration and change the loop to AUTOMATIC is...

  • Page 35: Data Log & Config Log

    Press the knob to start the test. While the self test is performed the bottom line changes to “Testing” and a string of dots is extended once per second to show the operation is progressing. At the end of the test the following screen is displayed. It shows either “No errors”, or the first error reported. Tag Name ♥ Self Test Results RAM fault  The tag name is truncated to fit on one line if necessary. The ♥ symbol in the upper right corner flashes to indicate a working HART connection. The lower left corner contains the symbol  when additional errors follow the present one, the symbol ...
  • Page 36 Tag Name ♥ Configuration Log Data Log The tag name is truncated to fit on one line if necessary. The ♥ symbol in the upper right corner flashes to indicate a working HART connection. Rotate the knob to move the reverse video highlight to the desired action. Press the knob to select the highlighted action and proceed to the corresponding display described in sections 6.10.1 or 6.10.2. Press MENU/EXIT to return to the Function Select menu in section 6.5. 6.10.1 Configuration Log Configuration data for up to 20 tags may be stored for later recall. The configuration data saved is the same as that shown on the Device Data screen, section 6.6.
  • Page 37 The ♥ symbol in the upper right corner flashes to indicate a working HART connection. The lower left corner contains the symbol  when additional screens follow the present one, the symbol  when additional screens precede the present one, and both when additional screens follow and precede the present one. Rotate the knob to move the reverse video highlight to the desired storage position. Press the knob to select the storage position. Press MENU/EXIT to return to the Log Select menu in section 6.10. Once a storage position has been selected, the following menu is displayed to select the operation to be performed. Position: ♥ 3 Tag on two lines SAVE RECALL...
  • Page 38 ERASE operation: • I f the position is empty, an error message is displayed. • I f the position is in use, confirm that the existing data is to be permanently erased before doing so. SEND operation: • I f the position is empty, an error message is displayed. • I f the position is in use, send the data to the RS232 port in a report format. 6.10.2 Data Log Process data may be stored for a single tag for later upload to a personal computer via the BetaLOG HART Windows application. We recommend that you use PN: 1920049 (Lemo to USB Cable) for use with the BetaLOG HART Software . It incorporates a USB/Serial adapter using an FTDI chipset. This combination provides consistent and reliable communications between the LC-110H and PC. The USB Drivers are included on the BetaLOG HART Software CD. Data may be logged in multiple sessions, but all sessions must be from the same HART device as determined by the long tag name. A different logging interval may be selected for each session. Each data sample contains the LC-110H measurement, device mA, and all four process variables.
  • Page 39 Rotate the knob to move the reverse video highlight to the desired operation. Press the knob to perform the operation. Press MENU/ EXIT to return to the Log Select menu in section 6.10. START operation: • I f no free records remain, no free sessions remain, or the present HART device does not match the HART device already logged, an error message is displayed. • O therwise, proceed to interval selection described below. ERASE operation: • I f there is no logged data, an error message is displayed. • O therwise, confirm that the existing data is to be permanently erased before doing so. Select the logging interval. Select Interval ♥ 1 second 2 seconds 5 seconds 10 seconds 30 seconds 60 seconds The ♥ symbol in the upper right corner flashes to indicate a working...

  • Page 40: Hart Modem Simulation

    Press MENU/EXIT to stop logging and return to the first data log screen. The displayed data items are: • T he top line indicates whether logging is in progress (Logging) or is stopped (Stopped). Logging stops automatically when storage is full, or before the LC-110H is turned off when the battery reaches its low voltage automatic shutoff limit of 5.6 volts. • I nterval is the item previously selected. • E lapsed is the time since the log was started, updated each time a new sample is saved. • R ecords used is the total number used to date for all sessions, updated each time a new sample is saved. • R ecords free is the total number that remain unused, updated each time a new sample is saved.

  • Page 41: Error Displays

    6.12 Error Displays There are two classes of errors which may occur during HART communications. The first class contains errors that are reported by the loop device in its response. The second class contains errors that are detected by the LC110H when receiving responses from the loop device.
  • Page 42 6) Write protected The loop device is write protected. The LC110H can not alter the write protect status of a device. The command was ignored by the loop device. HART response code 7. 7) Set to nearest possible value The data value sent with the HART command was rounded or truncated due to limitations within the loop device.
  • Page 43 14) URV too high The URV value received is greater than the Upper Transducer Limit of this loop device. The command was ignored by the loop device. HART response code 11. 15) Loop mA not active The loop device is in multi-drop mode. The command was ignored by the loop device. HART response code 11. 16) URV too low The URV value received is less than the Lower Transducer Limit of this loop device.
  • Page 44 22) Busy The loop device is temporarily busy performing some internal operation. The command was ignored by the loop device. Try the command again later. HART response code 32. 23) Command not implemented The HART command has not been implemented in this loop device. The command was ignored by the loop device. HART response code 64.
  • Page 45 LC110H Detected Errors These errors are detected by the LC110H when receiving responses from the loop device. They are indicated by the text “LC110H error:” at the top of the display. This is followed by one of the following error messages. a) No response The loop device did not respond to the last HART command sent. Check the power and connections to the loop device. Try the command again.
  • Page 46 d) Character overrun A general communications error occurred during the response received from the loop device. Try the command again. If the error persists, check the power and connections to the loop device. e) Buffer overrun A general communications error occurred during the response received from the loop device. Try the command again. If the error persists, check the power and connections to the loop device. Framing bad The structure of the response received from the loop device did not match the HART protocol definition. Try the command again. If the error persists, check the power and connections to the loop device.

  • Page 47: Maintenance

    7. Maintenance 7.1 Replacing Batteries Replace batteries as soon as the battery indicator turns on to avoid false measurement. If the batteries discharge too deeply the LC-110 will automatically shut down to avoid battery leakage. Note: Use only AAA size alkaline, lithium batteries, or rechargeable NiMh cells. 7.2 Cleaning the Unit Warning To avoid personal injury or damage to the calibrator, use only the specified replacement parts and do not allow water into the case. Caution To avoid damaging the plastic lens and case, do not use solvents or abrasive cleaners.

  • Page 48: Specifications

    8. Specifications Functions: mA source, mA simulate, mA read, mA read/ loop power, and volts read. Ranges: mA (0 to 24mA) and Volts (0 to 30VDC) Resolution: 1uA on mA ranges and 1mV on voltage range Accuracy: 0.01% of reading ± 2LSD all ranges (@23° ± 5°C) Operating Temp Range: -10°C to 55°C (14°F to 131°F) Humidity Range: 10 to 95% non-condensing Storage: -20°C to 60°C (-4°F to 140°F) Stability: 20ppm of F.S. /°C from -10°C to 18°C and 28°C to 55°C Display: 128 x 64 pixels, LCD Graphic w/backlight, .34” high digits Power: 6AAA alkaline, lithium, or NiMH batteries ≥ 40 hours continuous use (measure mode) Battery Life: Loop Compliance 24VDC @ 20mA Voltage: Loop Drive Capability: 1200Ω without HART resistor, 950 Ω with HART resistor IP Rating: IEC 60529: IP40 Over-Voltage Protection: 240VAC Overload Current...

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