Martel 311A-Ex Reference Manual Download Page 5

3

Warning

To avoid possible electric shock or personal injury:

• Do not apply more than the rated voltage. See specifications for supported ranges. 

• Follow all equipment safety procedures.

• Never touch the probe to a voltage source when the test leads are plugged into the

current terminals.

• Do not use the calibrator if it is damaged. Before you use the calibrator, inspect the

case. Look for cracks or missing plastic. Pay particular attention to the insulation
surrounding the connectors.

• Select the proper function and range for your measurement.

• Make sure the battery cover is closed and latched before you operate the calibrator.

• Remove test leads from the calibrator before you open the battery door.

• Inspect the test leads for damaged insulation or exposed metal. Check test leads

continuity. Replace damaged test leads before you use the calibrator.

• When using the probes, keep your fingers away from the probe contacts. Keep your

fingers behind the finger guards on the probes.

• Connect the common test lead before you connect the live test lead. When you

disconnect test leads, disconnect the live test lead first.

• Do not use the calibrator if it operates abnormally. Protection may be impaired. When in

doubt, have the calibrator serviced.

• Only operate the calibrator in non-hazardous areas or classified areas for which this

device is certified to operate in.

• When measuring pressure, make sure the process pressure line is shut off and

depressurized before you connect it or disconnect it from the pressure module.

• Disconnect test leads before changing to another measure or source function.

• When servicing the calibrator, use only specified replacement parts.

• To avoid false readings, which could lead to possible electric shock or personal injury,

replace the battery as soon as the battery indicator appears.

Caution

To avoid possible damage to calibrator or to equipment under test:

• Use the proper jacks, function, and range for your measurement or sourcing application.

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Summary of Contents for 311A-Ex

Page 1: ...BETAGAUGE 311A Ex 321A Ex Reference Manual www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 2: ...easuring Temperature with an RTD 16 6 Performing a Pressure Switch Test 17 7 Calibrating Transmitters 19 7 1 Using the mA Input Function 19 7 2 Calibrating a Pressure to Current Transmitter 19 7 3 Per...

Page 3: ...se calibration certificate with data 1 3 Safety information Ex Hazardous Areas An Ex hazardous area as used in this manual refers to an area made hazardous by the potential presence of flammable or ex...

Page 4: ...und Hot Surface Burn Hazard Read the User s Manual Important Information Off On The following definitions apply to the terms Warning and Caution Warning identifies conditions and actions that may pose...

Page 5: ...our fingers behind the finger guards on the probes Connect the common test lead before you connect the live test lead When you disconnect test leads disconnect the live test lead first Do not use the...

Page 6: ...1 2 Input Terminals These terminal are used to measure current and a contact closure for switch test 3 P1 Pressure Port This is the connection for the internal sensor P1 4 P2 Pressure Port This is th...

Page 7: ...nd the ranges of the 2 internal pressure sensors The calibrator requires a maximum of 5 minutes warm up to rated accuracy Large changes in ambient temperature may require a longer warm up period See s...

Page 8: ...o set the parameters of the current display use the CONFIG option to get to the Display Configuration Menu Here the SELECT option will toggle through the choices for each parameter The first parameter...

Page 9: ...functions are available concurrently An X in a column indicates that the mode in the current display will not be available for selection if the mode in that row is in use in any other active display...

Page 10: ...8 Figure 4 Menu Map www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 11: ...9 www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 12: ...mits are within 5 of the full scale range of the selected sensor If the display indicates OL the zero function will not operate 2 3 2 Absolute Internal Sensor When an absolute module is selected on th...

Page 13: ...G option of the Configuration Lock Menu to lock or unlock the display configuration When the LOCK CFG option is chosen the menu display returns home and the CONFIG option on the Main Menu indicates th...

Page 14: ...activating a Display Use the DISPLAY option on the Display Selection Main Menu to access the Display Activation Menu The function option can be used to select which display to act upon The ON OFF opti...

Page 15: ...to turn the low resolution function on or off 3 Pressing DONE returns to main menu 2 4 8 Setting the RTD probe type Use the PROBE TYPE option of the RTD Probe Type main menu to access the RTD Probe s...

Page 16: ...an inappropriate pressure is applied If OL is observed on any pressure display the pressure should be reduced or vented immediately to prevent damage or possible personnel injury OL is displayed when...

Page 17: ...s 75 then the mA value is 16 mA Figure 6 5 Measuring Temperature with an RTD To measure temperature using an RTD probe you must select the RTD function on one of the displays Make sure the proper prob...

Page 18: ...6 Performing a Pressure Switch Test Warning Check entity parameters before making any connections to this device Figure 8 16 www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSu...

Page 19: ...ibrator if necessary Close the vent after zeroing the calibrator 4 The top of the display will read CLOSE 5 Apply pressure with the pump slowly until the switch opens Important NOTE In the switch test...

Page 20: ...sure setting Example P1 ST will return to P1 Important NOTE The previous example uses a normally closed switch The basic procedure is still the same for a normally open switch the display will just re...

Page 21: ...urrent Transmitter To calibrate a pressure to current transmitter P I perform the following steps 1 Connect the calibrator and the pump to the transmitter 2 Apply pressure with the pump 3 Measure the...

Page 22: ...30 psi pressure span into the calibrator and the calibrator will calculate and display the deviation or Error from the expected 4 to 20 mA output This eliminates the need for manual calculations and a...

Page 23: ...and arrows to set the 100 point of the desired pressure range select DONE SET when finished 6 Again use the arrows to set 0 point and select DONE SET when finished and the ERROR mode will be ready to...

Page 24: ...minimum and maximum values of any displayed parameter The min max function can be accessed by stepping through the menu options until min max is shown on the display above the F1 key At this time pres...

Page 25: ...splay is set to P1 mode and the middle is set to mA lower is off Setup 2 The upper display is set to P2 mode and the middle is set to mA lower is off Setup 3 The upper display is set to P1 mode and th...

Page 26: ...edure but most call for calibration of three parameters static pressure differential pressure and temperature To facilitate these measurements recall setup 5 on the 311A Ex 321A Ex Note The pressures...

Page 27: ...0 mH Uo 7 14 V Io 1 12 mA Po 2 mW Co 240 F Lo 1 H LEMO CONNECTOR FOR USE WITH LTP100A RTD PROBE ONLY EMI RFI Conformance EN6136 Annex A Connectors Ports Pressure two 1 8 NPT BetaPort P pressure module...

Page 28: ...002mA RTD ohms 0 015 of rdg 0 02 ohms or 0 1 C 0 C for Pt100 Temperature Effect No effect on accuracy on all functions from 15 C to 35 C Add 0 002 F S C for temps outside of 15 C to 35 C Optional LPT...

Page 29: ...omatically shut down to avoid battery leakage Note Use only AA size alkaline batteries Warning Only change batteries in an area known to be non hazardous Approved Batteries Battery Manufacturer All Ba...

Page 30: ...eansers Clean the calibrator with a soft cloth dampened with water or water and mild soap 13 3 Service Center Calibration or Repair Only qualified service personnel should perform calibration repairs...

Page 31: ...0697 0 0281 0 0703 0 3515 0 4921 1 0546 1 0546 2 1092 2 1092 7 0307 21 092 35 153 70 307 105 46 210 92 351 53 703 07 cmH2O 4 C 70 3089 28 124 70 309 351 54 492 16 1054 6 1054 6 2109 3 2109 3 7030 9 21...

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