DPM65S

DPM-65 Dimensions Specifications Display: Digits: Type: Polarity: Decimal Points: Overload: Hold: 3 1/2 Digits (±1999 counts) 0.39" (10mm) High Contrast Reflective LCD Automatic, "–" displayed 3 Position, user selectable Three lower order digits blank for inputs>1999 and 1 Megohm, (>10 Megohm on 200mV Range) 300Ω nominal @ 20 mA DC (loop powered) Performance: Accuracy: ±(0.1% +1 count) typical ±(0.2% +2 counts) maximum Conversion Rate: 3 per second Normal Mode Rej.: >30 dB @ 60 Hz Common Mode Range: ±1V DC Common Mode Rej.: >86 dB Zero Adjustment: Automatic Warmup: 10 minutes typical Temperature Coeff.: ±100 ppm per °C typical Environment: Operating Range: 0 to 50 °C Storage Range: –20 to 70 °C Power Supply: Voltage: +5V DC (±5%) Current: 3mA Mounting: Snap-in Bezel Mount Process Adder Board: Plugs onto DPM pins, adds approx. 0.6" (16mm) to depth Connections: Pins, 0.025" square on 0.1" centers Screw terminals on Process Adder Board PO Box 770 Londonderry, NH 03053 Fax: (603) 434-1653 • Tel: (603) 434-1433 • 1-800-821-0023 E-mail: sales@martelcorp.com • www.martelcorp.com Ranging DPMs for Voltage & Current * VIN RA** RB** I in RB** 2V 1 Meg 110 k 2 mA 100 20V 1 Meg 10 k 20 mA 10 200V 1 Meg 1k 200 mA 1 1000V* 10 Meg*** 1k When attentuating voltages above 20V care must be used to use components rated for higher voltages and that proper creepage and clearance distances are used. Refer to UL3111 or IEC 1010. ** Resistors should be 1%, 1/4 wattt with a 100 or 50 ppm temperature coefficient (Note: Recalibration of span required if accuracy better than ±1.4% is desired.) *** Use (2) 4.99 Meg in series if 10 Meg is not available. Connection Descriptions PIN Wiring Connections Description V+ +5V DPM Power Supply GND DPM Power Supply Ground DP COM Decimal Point Return DP1 1XX.X DP2 1X.XX DP3 1.XXX Input (+) Positive Input Signal Input (–) Negative Input Signal NC No Connection Required HOLD Hold Last Display 1. Floating Input, DPM65: The input common mode range is ± 1Vdc. If INPUT (–) is not directly conected to GND, a 10k resistor network can be connected as shown to reduce unstable readings. 2. Single-Ended Input, DPM65S: The 10K resistor network is not required. The INPUT (–) is internally connected to GND. Unused pins should be left open. CAUTION: Damage to the unit can occur if the power source polarity is reversed, or greater than 6V is applied between pins 1 & 2. DPM-65