

| Specification | |
| General  | |
| Inputs  | 4-20mA  | 
| Capacity  | 4 channels, Extension until 28 channels by modules adjunction  | 
| Display alphanumeric  | Number of channels  | 
| Measured value  |  | 
| Unit  |  | 
| Alarm, fault, test  |  | 
| Measurement range  | % LEL, ppm, % Vol.  | 
| Alarm threshold  | 4  | 
| Warranty  | 1 year  | 
| Output signals  | |
| Analogue  | None  | 
| Digital  | RS 485/422 ModBus or RS 232  | 
| Relay output  | 4 alarm relays configurables and one default  | 
|  | Extension until 19 internals relays  | 
| – option  | External module relay  | 
| Electrical  | |
| Power supply  | 115 or 230V AC (50/60Hz)  | 
| Environmental  | |
| Storage temperature  | -40°C to + 70°C  | 
| Operational temp.  | 0°C to + 40°C  | 
| Humidity  | 90% (non-condensing)  | 
| Certifications  | |
| Standards  | EN 50054/50057, 89/336/CE (CEM), EN 50081, 50082  | 
| Housing  | |
| Material  | Metallic  | 
| Weight  | 9,8 Kg  | 
| Dimensions  | 430 x 350 x 160 (LxWxdepth) mm  | 
| Options  | |
| Output  | RS 485/422 ModBus/JBus  | 
| References  | |
| ECHO 28  | Control unit, capacity 4 measurement channels  | 
| MOD 4 V  | Extension channel Module for ECHO 28 ( 4 channels)  | 
| MOD 8 REL  | Extension relays card (8 relays)  | 
| 产品名称 | 产品简介 | 产品编号 | 
|---|---|---|
| ECHO28气体检测仪 | The ECHO 28 controller covers the middle ground between the small controllers like ECHO 2/4 and the larger modular systems such as MDXI. The single unit design keeps the cost down. | MR-06543-00 |