Intrinsically safe- FM U.S. and Canadian approvals
- ATEX and IECEx certification
- High contrast display with backlight
- Communication from safe area via galvanic isolator
- Operator push buttons & switch outputs
- Field & panel mounting models
- BEKA, Modbus, MTL protocols
- Replace obsolete MTL 643 & 64
These two intrinsically safe instruments can display text and simple graphics in a hazardous area. Incorporating a high contrast backlit display, push-buttons and solid state outputs, they constitute low cost operator interfaces which are ideal for simple machine and process control applications.
Communication is normally via a two-wire serial data link, which also supplies powers to the text display from a single galvanically isolated safety barrier located in the safe area. A second display can be supported by the same isolator. A third and fourth display can be connected via a three-wire system.
BEKA protocol enables text to be written anywhere on the screen in five different font sizes, together with lines, boxes, bargraphs and simple bitmap graphics. A free programming guide and an instrument simulator package, which will run on a personal computer may be downloaded by clicking here. The simulator demonstrates the capabilities of the serial text display and the attached programming utilities enable applicational software to be developed without any additional hardware.
Recent upgrades include Modbus protocol and now permit up to eight variables to be displayed on one of nine standard screens. You can also create your own custom screen layout. Apart from addressing the required text display register, no programming is required which simplifies interfacing.
Obsolete MTL Model 643 & 644 text displays can be easily replaced by virtue of the built-in legacy protocol. Thus existing installations may be upgraded to include display backlighting and the latest certification without any programming changes.
Proprietary weighing applications benefit from ASCII pattern matching which enables a high level of programmed customisation. In this mode the serial data displays provide remote indication of a variety of data, plus operator push-buttons for such functions as “print” and “zero”. Even corporate logos can be displayed at power-up. Learn more…
| Intrinsically Safe, Field Mounting | |
| Model | BA484D |
| Style | ![BA484D Serial text [Data] display](http://www.beka.co.uk/thumbnails/ba484d.png) |
| Mounting | Field |
| Protection | IP66 |
| Display | High contrast 86.5mm x 45mm |
| with backlight, up to 8 variables | |
| Communications Interface via BA201 (other isolators may be used) | RS232 or RS485 |
| Protocol | Modbus, BEKA & Legacy |
| Operator push buttons | 4 |
| Connections for remote operator push buttons | 6 |
| Solid state outputs | 2 |
| Certification | |
| Europe ATEX | ATEX Group II Category 1G |
| Ex ia IIC T5 Ga -40°C ≤ Ta ≤ +60°C | |
| International IECEx | Ex ia IIC T5 Ga -40°C ≤ Ta ≤ +60°C |
| Optional | |
| USA FM certification | 3610 Entity CL I, II, III Div. 1 |
| Gp A, B, C, D, E, F & G T4 Ta = +60°C | |
| 3611 Nonincendive CL I, II, III Div. 2 | |
| Gp A, B, C, D, E, F & G T4 Ta = +60°C | |
| Canada cFM certification | Entity CL I, II, III Div. 1 |
| Gp A, B, C, D, E, F & G T4 Ta = +60°C | |
| IPA CL I, II, III Div. 2 | |
| Gp A, B, C, D, E, F & G T4 Ta = +60°C | |
| Europe ATEX Dust certification | Group II Category 1D |
| Ex ia IIIC T80°C IP66 Da | |
| -40°C ≤ Ta ≤ +60°C | |
| International IECEx Dust certification | Ex ia IIIC T80°C IP66 Da |
| -40°C ≤ Ta ≤ +60°C | |
| Intrinsically Safe, Panel Mounting | |
| Model | BA488C |
| Style | ![BA488C Serial text [Data] display](http://www.beka.co.uk/thumbnails/ba488c.png) |
| Mounting | Panel |
| Protection | Front IP66, rear IP20 |
| Display | High contrast 86.5mm x 45mm |
| with backlight, up to 8 variables | |
| Communications Interface via BA201 (other isolators may be used) | RS232 or RS485 |
| Protocol | Modbus, BEKA & Legacy |
| Operator push buttons | 6 |
| Connections for remote operator push buttons | 6 |
| Solid state outputs | 2 |
| Certification | |
| Europe ATEX | ATEX Group II Category 1G |
| Ex ia IIC T5 Ga -40°C ≤ Ta ≤ +60°C | |
| USA FM | 3610 Entity CL I Div. 1 |
| Gp A, B, C & D T4 Ta = +60°C | |
| 3611 Nonincendive CL I Div. 2 | |
| Gp A, B, C & D T4 Ta = +60°C | |
| Canada cFM | Entity CL I Div. 1 |
| Gp A, B, C & D T4 Ta = +60°C | |
| IPA CL I Div. 2 | |
| Gp A, B, C & D T4 Ta = +60°C | |
| International IECEx | Ex ia IIC T5 Ga -40°C ≤ Ta ≤ +60 |
| Communications Isolator | |
| Model | BA201 |
| Style |  |
| Mounting | 35mm DIN rail |
| Protection | IP20 |
| Certification | |
| Europe ATEX | ATEX Group II Category (1) G |
| [Ex ia] IIC Tamb = -40°C to +60°C | |
| USA FM | Entity AIS CL I, II, II |
| Gp A, B, C, D, E, F & G | |
| Non incendive CL I Div 2 | |
| Gp A, B, C & D T5 Ta = +60° | |
| Canada cFM | Entity AIS CL I, II, II |
| Gp A, B, C, D, E, F & G | |
| Non incendive CL I Div 2 | |
| Gp A, B, C & D T5 Ta = +60° | |
| International IECEx | [Ex ia] IIC Tamb = -40°C to +60°C |
