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Products > Temperature > Controllers & Displays > Loop Powered > IP67 Loop Powered Indicator
The DM400 is a loop powered indicator designed to be connected in series with a 4-20mA current loop and to display digitally, in engineering units, the process variable represented by the current flowing. Coarse and fine potentiometers are provided for both SPAN and ZERO adjustment. The DM400 3 ½ digit LCD display requires only 1 volt from the loop. Sealed to IP67, the housing can be mounted, on a probe assembly or wall. The DM401 is a lower cost version of the DM400 requiring 3 volts from the loop and the DM400X is an IS approved version for use in zone 0, 1 or 2 hazardous areas, (EEx ia IIC T5). |  |
| Specification | |
| Input | 4-20mA, two wire (reverse, polarity protected) |
| Min. Operating Current | DM400: 3.8mA DM400X: 3.8mA DM401: 3.8mA |
| Max. Loop drop @ 20mA | DM400: 1.0 Volts DM400X: 1.6 Volts DM401: 3.0 Volts |
| Display | 3 ½ Digit LCD |
| Display Range | -1000 to +1999 counts 3 1/2 digit |
| Offset | -1000 to +1000 counts at 4mA |
| Span | 200 to 2000 counts(16mA change) |
| Decimal Point | 3 positions, plus blank |
| Accuracy | ± 0.1% rdg, ±1 count |
| Ambient | to 50°C operating |
| Case Size | 85mm dia x 114mm overall |
| Entry | M16 & M20 |
| Standard units available | Temperature: °C, °F, °K, %RH Pressure: bar, bar g, bar abs, mbar, in wg, ft wg, mwg, mmHg, kg/cm², psi, psig, psi abs, Flow: l/s, l/min, l/h, gal/min, gal/h, Other: %, m, ft, %CO², ft/min, V dc, mV dc, A dc, mA dc. ft³/min |