Related Manuals for BEKA BA678C
Summary of Contents for BEKA BA678C
- Page 1 BA678C Panel mounting indicating temperature transmitter Issue 9 Issue 9 4th July 2019...
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Page 3: Table Of Contents
6.1.11 Access code ‘CodE’ 6.1.12 Resistance thermometer type ‘r.tYPE’ 6.1.13 Decimal point position ‘dP’ 6.1.14 Lower input & display ‘in-Lo’ 6.1.15 Higher input & display ‘in-Hi’ 6.3 Configuration defaults The BA678C is CE marked to show compliance with the European EMC Directive 2014/30/EU... -
Page 4: Description
1. DESCRIPTION 3. OPERATION The BA678C is a panel mounting 4/20mA loop Fig 1 shows a simplified diagram of the BA678C powered temperature transmitter with a large easy to Indicating Temperature Transmitter. The input, which may be from a resistance thermometer, read display. -
Page 5: Electrical System Design
4. ELECTRICAL SYSTEM DESIGN 4.1 Use as a temperature indicator The BA678C may also be used as just a temperature The BA678C is a smart HART enabled loop indicator by ignoring the instrument’s 4/20mA output powered 4/20mA Indicating Temperature Transmitter. -
Page 6: Installation
–20ºC and +70ºC. Please consult BEKA associates if high vibration is anticipated. Fig 3 shows the overall dimensions of the BA678C and the panel cut-out. To achieve an IP66 seal between the instrument enclosure and the panel, the smaller cut-out must be used and the instrument secured with four panel mounting clips. -
Page 7: Installation Procedure
5.2 Installation Procedure 5.3 EMC The BA678C complies with the requirements of the a. Insert the BA678C into the instrument panel European EMC Directive 2014/30/EU. For specified cut-out from the front of the panel with the immunity, all wiring should be in screened twisted sealing gasket positioned as shown in Fig 4. -
Page 8: Summary Of Functions
‘CJC’ Cold junction compensation Voltage and resistance inputs Turns thermocouple cold junction The BA678C can display the voltage or resistance compensation on or off. input in any engineering units. See section 6.2.5 Configuration allows: ‘FAuLt’ Sensor fault analogue indication Zero and span of digital display to be adjusted. - Page 9 For Resistance Thermometer (RTD) Input see Fig 6 For Voltage and Resistance Inputs – see Fig 7 Transmitter Summary Transmitter Summary display of function display of function ‘r.tYPE’ Resistance thermometer type ‘dP’ Decimal point position Selects Pt100 or Pt1000 sensor Defines position of displayed decimal See section 6.2.10 point.
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Page 10: Description Of Configuration Menu Functions
Units Transmitter Display 6.2.1 Transmitter input ‘InPut’ This function enables BA678C indicating temperature transmitter to be conditioned to operate with a thermocouple, 3 or 4 wire resistance When C or F are selected the units of measurement thermometer, voltage or 3 or 4 wire resistance input. -
Page 11: Sensor Fault Analogue Indication 'Fault
6.2.6 Sensor fault analogue indication ‘FAuLt’ function press P which will display the ‘ZEro’ function The sensor fault analogue indication function in the sub-menu, pressing P again will reveal the appears in the menu when the transmitter is existing transmitter input at which the transmitter configured for a resistance thermometer or a output current is 4mA. -
Page 12: Configuration Of Bargraph Display 'Bar
The ‘bAr’ function may be selected from within the If the access code is lost please contact BEKA configuration menu by operating the ▼ or ▲ button. associates. To enter the function press P which will display the ‘b.tYPE’... -
Page 13: Lower Input & Display 'In-Lo
6.2.12 Lower input & display ‘in-Lo’ 6.2.13 Higher input & display ‘in-Hi’ This function, which only appears in the menu when This function which only appears in the menu when the transmitter is configured for a voltage or the transmitter is configured for a voltage or resistance input, defines the transmitter lower input resistance input, defines the transmitter higher input voltage or resistance ‘inVAL’... - Page 17 6.3 Default configuration If the transmitter’s configuration is not specified at the time of ordering, the instrument will be configured as follows but can easily be reconfigured on-site. Function Factory default Transmitter input ‘InPut’ 3 wire RTD Sensor type ‘t.tYPE’ Pt100 Units of digital display ‘dEG’...
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Page 18: Configuration Example
7. CONFIGURATION EXAMPLE Step 2 Select resistance thermometer type In this example a BA678C indicating temperature See: Fig 6 and section 6.2.10 transmitter is required to display temperature in Using the ▼ or ▲ button select the degrees Celsius with maximum resolution. The ‘r,tYPE’... - Page 19 1209. configuration menu. Press E twice to enter the new access code and return the BA678C to the display mode via the ‘CodE prompt. Step 7 Configuration of bargraph display See: Fig 6 and section 6.2.8...
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Page 20: Maintenance
MAINTENANCE 8.1 Fault finding during commissioning If a BA678C fails to function during commissioning the following procedure should be followed: If a BA678C fails after it has been functioning correctly the following procedure should be followed: Symptom Cause Check No display or... -
Page 21: Servicing
Fig 8 Alarm outputs When an alarm is activated an annunciator appears on the left hand side of the BA678C display. This shows which alarm has been activated and will flash if the alarm is delayed or silenced. Programmable functions for each alarm include adjustable setpoint, hysteresis, alarm delay and alarm accept. -
Page 22: Solid State Output
180k panel push buttons, see Fig 3. Note: Because of the series protection diode some When a BA678C indicating temperature transmitter is test meters may not detect a closed alarm output. supplied with optional alarms the conditioning menu is extended as shown in Fig 11. - Page 23 Summary of programmable alarm functions Display Description of function ‘ALr1’ Alarm 1 ‘ALr2’ Alarm 2 The two functions each contain seven identical sub-functions, configuration alarm 1 and the other for configuration alarm 2. See section 9.3.3 and Fig 11. 'EnbL' Alarm enable Enables or disables the alarm function without changing the alarm parameters.
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Page 25: Alarm Selection 'Alr1' & 'Alr2
A BA678C transmitter with a high alarm set at the decimal point before adjusting ‘SP1’ or ‘SP2’. 90.0 and hysteresis of 10.0 will perform as follows:... -
Page 26: Alarm Delay 'Dela
9.3.11 Access Setpoint: ACSP This function controls a separate menu that provides direct access to the alarm setpoints when the BA678C transmitter is in the operational mode. The function enables an operator to adjust the alarm setpoints without having access to the configuration and alarm menus. -
Page 27: Operational Mode
9.3.12 Adjusting alarm setpoints from the operational mode Access to the alarm setpoints from the transmitter operational mode is obtained by operating the P and ▲ push buttons simultaneously as shown in Fig 12. If the setpoints are not protected by a security code the alarm setpoint prompt 'SP1' will be displayed.
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