Selection Guide
| M100-DA1 | DC Current input 4kV isolation |
| M100-DV1 | DC Voltage 20mV…11.9V input 4kV isolation |
| M100-DV2 | DC Voltage 12V…600V input 4kV isolation |
| M100-DA11 | DC Current input 1.5kV isolation |
| M100-DV11 | DC Voltage 20mV..11.9V input 1.5kV isolation |
| M100-DV21 | DC Voltage 12V..600V input 1.5kV isolation |
Typical Applications
These isolators isolate the DC Input signal from the DC Output signal, which is directly proportional to the input signal. There are two levels of isolation offered, the M100-DA1/DV1/DV2 have 4kV isolation and the M100-DA11/DV11/DV21 have 1.5kV isolation. A wide range of both D.C. Current and voltage inputs are offered. Typically these isolators can be used to prevent earth loops which occur when a measuring source that is earthed, is connected to a computer or data logger that is also earthed. Another common use is to provide isolation on the inputs to a PLC. All of these isolators have either A.C. or D.C. auxiliaries which means that they have an advantage over loop powered units, in that if for any reason the output lead should become disconnected, the input will not be saturated.
Technical Specifications
| INPUT | |
| Rated value In | ±1mA…10A M100-DA1/DA11 |
| Voltage drop | 20mV |
| Rated value Un | ±20mV…11.9V M100-DV1/DV11 |
| Impedance | 10 kOhm/volt |
| Working Range | ±125% In |
| Overload continuous | 4 x In M100-DA1 (upto 20A max) |
| Overload continuous | 1.5 x Un M100-DV1/DV2 |
| OUTPUT | |
| Rated value mA | 0-1/5/10/20 & 4-20mA |
| Load Resistance | 12/2.4/1.2/0.6 kOhm |
| Rated value volts | 0-5/10 & 1-5V |
| ADJUSTMENT | |
| Zero | ±2% |
| Span | ±10% |
| AUXILIARY | |
| A.C.Voltage | 115/230/400V(±25%/45-65 Hz/<2VA |
| D.C. Voltage | 24/48/110V(±20% / galvanically isolated / <3W) |
| WEIGHT&CASE SIZE | Approx 0.4kg. 55 case |
| INSULATION | |
| M100-DA1/DV1/DV2 | 4kV as shown in general |
| M100-DA11/DV11/DV21 | Test voltage 1.5kV RMS 50Hz |
| 1 min between input/case/output |
Ordering Information
| Product Code | Input In | Output | Aux | Freq | Options |
| M100-DA11 | 1mA | 4-20mA | 230v | 50Hz |
Options
| 1 | Non standard Inputs/Outputs as far as technically viable |
| 2 | A.C. Auxiliary in range 57.7 to 450 volts |
| 3 | Calibration at temperature other than 23ºC |
A.C. Current Connection Diagrams
