Related Manuals for Martel 311A-Ex
Summary of Contents for Martel 311A-Ex
- Page 1 BETAGAUGE 311A-Ex/321A-Ex Reference Manual GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
-
Page 2: Table Of Contents
1.1 Contacting Martel / Beta ........1... -
Page 3: Introduction
The 311A-Ex uses the P1 port for all pressure inputs. The P2 port is only used on the model 321A-Ex. Therefore on the model 311A-Ex, all menu choices involving pressure are limited to the P1 port only. All other model 311A-Ex features and functions are the same as for the 321A-Ex. - Page 4 Symbols Used The following table lists the International Electrical Symbols. Some or all of these symbols may be used on the instrument or in this manual. Symbol Description AC (Alternating Current) AC-DC Battery CE Complies with European Union Directives Double Insulated Electric Shock Fuse PE Ground...
- Page 5 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.
-
Page 6: Calibrator Interface
2. Calibrator Interface Figure 1 shows the location of the process measurement inputs, while table 1 describes their use. Side View Figure 1 Pressure Measurement Inputs Table 1 Process Measurement Inputs Name Description 1, 2 Input Terminals These terminal are used to measure current and a contact closure for switch test. -
Page 7: Calibrator Display
Figure 2 shows the location of the keys. Table 2 describes the function of each key. Figure 2 Keypad Table 2 Key Functions Name Description Function Keys These keys are used in various ways, primarily to config- ure the calibrator ON/OFF Key This key is used to turn the calibrator on and off ZERO Key... - Page 8 Figure 3 Display Table 3 Display Functions Name Description Primary Parameters Indicates what is being measured. Span Indicator Indicates the percent of the 4 to 20 mA span. (For mA functions only) Pressure Units Indicates one of 17 pressure units available for display. Units Indicates the unit of measure for the display.
- Page 9 P[2] ST = Switch Test with right side sensor. mA = Milliamps measure RTD = RTD Temperature Measurement (if a probe is connected). The following table shows which 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 Figure 4 Menu Map GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
- Page 11 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
-
Page 12: Using The Backlight
2.2 Using the Backlight The backlight is controlled by the dedicated backlight key. It toggles on and off when the key is pressed; this is one of the few functions that cannot be controlled by the serial interface. There are no user configuration settings for the backlight. 2.3 Using the Zero Function When the ZERO KEY is pressed, the calibrator will zero the current display if a pressure mode is selected, and the pressure is within the zero limit. - Page 13 function. The second and third options of a ‘sub-main’ menu are always the same. The NEXT option leads to the next ‘sub-main’ menu and the DONE option returns home . For the last ‘sub-main’ menu the NEXT option wraps around to home. See Figure 4 for a detailed mapping of the menu structure.
- Page 14 recall the set-up stored in the selected location. The display menu will automatically go home. 2.4.4 Setting AutoShut-off Parameters The calibrator can be set to automatically shut-off after a selected number of minutes; this function can also be disabled. To set the auto shut off parameters select the AUTO OFF option on the Auto Shut Off Main Menu.
- Page 15 2.4.6 Low resolution function. Due to the high accuracy of the 311A-Ex/321A-Ex the measured values are displayed with many digits, this might be an disadvantage in some cases, therefore the 311A-Ex/321A- Ex has a low resolution function. The function takes away the last digit.
-
Page 16: Measuring Pressure
3. Measuring Pressure To measure pressure, connect the calibrator using an appropriate fitting. Choose a pressure setting for the display being used. The calibrator is equipped with two internal sensors. Be sure to choose the sensor based on working pressures and accuracy. Warning Pressure sensors may be damaged and/or personnel injury may occur due to improper application of pressure. -
Page 17: Media Compatibility
Note: The factory default type is PT100-385 so if the 311A-Ex/321A-Ex is being used with the Martel Model LPT100A probe you do not have to set the probe type. Simply plug the probe into the 311A-Ex/321A-Ex and configure the display to read temperature. - Page 18 Figure 7 6. Performing a Pressure Switch Test Warning Check entity parameters before making any connections to this device. Figure 8 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
-
Page 19: Performing A Pressure Switch Test
To perform a switch test, follow these steps: 1. Change the setup to Setup 4 (default switch test). Setup 4: The upper display is set to [P1] ST, all other displays are off. Important NOTE: The pressure Switch Test can be performed with the following functions[P1] ST, [P2] ST. -
Page 20: Calibrating Transmitters
8. Press the “NEXT” option to view when the switch closed, and the dead band. 9. Press the “NEW TEST” option to clear the data and perform another test. 10. Press the “DONE” option to end the test and return to the standard pressure setting. Example: [P1] ST will return to [P1]. -
Page 21: Using The Ma Input Function
7.1 Using the mA Input Function The mA input function allows the user to read back the 4-20 mA output from the device being calibrated. This can be done passively – where the device under test directly generates 4-20 mA and can be read by the calibrator. 7.2 Calibrating a Pressure-to-Current Transmitter To calibrate a pressure-to-current transmitter (P/I), perform the following steps: 1. -
Page 22: Percent Error Function
7.3 Percent Error Function Warning Check entity parameters before making any connections to this device. The calibrator features a unique function which can calculate pressure vs. milliamp error as a percentage of the 4 to 20 mA loop span. The percent error mode uses all 3 screens and has a unique menu structure. - Page 23 4. Use SELECT to toggle through the UNIT options, and select NEXT to move on. 5. Use the ↑ 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 use.
-
Page 24: Minimum And Maximum Storage Capability
Note: The 0% and 100% point will be saved in non-volatile memory until they are changed again by the user for the internal sensors, and external pressure modules. When using an external module the 0% and 100% are set to low and full scale of the module until the user changes it, or if it was previously saved. -
Page 25: Factory Setups
9. Factory Setups The Calibrator is loaded with five factory setups. These setups are shown below. Setup 1: The upper display 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 the middle is set to [P2], lower is off. -
Page 26: Custody Transfer / Flow Calibration
Warning Check entity parameters before making any connections to this device. The Model 311A-Ex/321A-Ex is ideal for flow computer calibration. Every manufacturer of flow computers has a different calibration procedure, 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. -
Page 27: Specifications
KEMA 10 ATEX 0168X 0344 Ex ia IIB T3 Gb (Ta=–10... +45°C) II 2 G IECEx CSA 10.0013X Manufactured by Martel Electronics, Inc., 3 Corporate Park Dr. Derry, NH, USA Entity Parameters MEASUREMENT JACKS: Ui = 30 V; Ii = 80 mA; Pi = 750 mW; Ci = 0 μF; Li = 0 mH Uo = 7,14 V;... -
Page 28: Warranty
Accuracy Pressure 0.3 psi ±0.1% F.S. 1.0 psi ±0.05% F.S. 15 psi through 3000 psi ±0.025% F.S. 5 psi, 5000 psi, 10,000 psi ±0.035% F.S. ±0.015% of rdg ±0.002mA 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... -
Page 29: Maintenance
13.1 Replacing Batteries Replace batteries as soon as the battery indicator turns on to avoid false measurements. If the batteries discharge too deeply the 311A-Ex/321A-Ex will automatically shut down to avoid battery leakage. Note: Use only AA size alkaline batteries. -
Page 30: Cleaning The Unit
13.2 Cleaning the Unit Warning To avoid personal injury or damage to the calibrator, do not allow water into the case. Caution To avoid damaging the plastic lens and case, do not use solvents or abrasive cleansers. 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, or servicing not covered in this manual. - Page 31 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...