| Preset | 1 preset |
| Display | Number disc |
| Digits | |
| Function | Time counter (with ATEX) |
| Product Family | 497 ATEX Preset time counter |
| Technology | Pneumatic |
| Digit Height [mm] | 4 mm (0.2 in) |
| Reset | - button and pneumatic reset
- button and automatic reset
|
| Signal Times | - Signal duration at port A: Timers with pneumatic reset: From reaching preset value until Reset at 3 bar
- Timers with automatic reset: 300
340 ms
|
| Reset Frequency | max. 1 per 2 s |
| Count Input | adding |
| Application Input/Output (Timer) | |
| Counting Range | Maximum 15% in the first time unit (seconds or minutes) |
| Output | - 1/min 0.5% (minutes version)
- 1/s 2% (seconds version)
|
| Time Setting | after reaching preset value, pressure air ON from output P to A |
| IP Protection Class | - IP40 with connected hoses.
- IP55 when using a transparent protection cover (see Accessories)
|
| Operating Temperature [°C] | - 0
+ 60°C
- Maximum compressed air temperature: 30°C
|
| Service Pressure | 2 - 6 bar |
| Air Quality | Filtered, dried and unlubricated air according to ISO 8573-1: 2010 [7:4:4] |
| Filter Pore Width | designed for use with compressed air. Operation with other media/pure gases upon request |
| Degree of Protection | < 40 µm |
| Vibration Resistance | use suitable filters when necessary |
| Shock Resistance | - IP40 with connected hoses.
- IP55 when using a transparent hinged cover (see Accessories)
|
| Cable Length | - ATEX approval:
- Gas: Ex II 2G Ex h IIB T4 Gb (0°C ? Ta ? 60°C)
- Dust: Ex II 2D Ex h IIIB T130°C Db (0°C ? Ta ? 60°C)
- Mining: Ex I M2 Ex h I Mb (0°C ? Ta ? 60°C)
|
| Size [mm] | 75x60x125 |
| Mounting | front panel installation |
| Mounting Depth [mm] | - with pneumatic reset: 122 mm
- with automatic reset: 146 mm
|
| Front Panel Cutout | 52 x 52 mm |
| Weight [g] | Approx. 320 g (11.3 oz), with automatic reset approx. 350 g (12.3 oz) |
| Connection | hose coupler M5 |
| Transistor | is ventilated with supply air at the alarm |
User-friendly integrated preset time counter, Type 497 with ATEX, is easy to install using a hose coupler or rapid-fit connector. It has convenient pushbutton setting and is equipped with a manual pushbutton reset. Additionally it can have either an integrated pneumatic or an automatic reset function. The display ensures permanently visible preset and is available with 3 or 5-digits. The time unit can be chosen as minutes or seconds.
The ATEX version of pneumatic timer 497 is certified for use in potentially explosive atmospheres where there is a risk of gas or dust explosion, zones 1 and 21 as well as for Mining (category M2).
