DMR20-1-ACV Datasheet, PDF (1/4 Pages) Murata Manufacturing Co., Ltd. – 85 to 264Vac, LED Display Line Monitor

www.murata-ps.com
FEATURES
Universal 85 to 264Vac measurement range
_{Self-powered directly from the AC supply}
Installs in “oiltight”1.20 inch (30.5mm) round cutouts
Four-digit LED display with overvoltage indication
Reads true-rms value to 0.1V resolution
Knockout punches and tooling available
Digital replacement for analog panel meters
Screw-style terminal block simplifies installation
Self-resetting internal fuse for long-term reliability
Provides moisture resistance to IP67/NEMA 6
Supplied with EPDM rubber gasket and plastic hex nut
UL/CSA approvals pending
Performance/Functional Specifications
Typical at Ta = +25°C, fin = 60Hz
AC Input (TB1)
Voltage Range ➀
Current Consumption
85 to 264Vac (47-63 Hz)
@Vin = 250Vac: 30mA (max.)
@Vin = 120Vac: 15mA (max.)
Performance
Sampling Rate
Resolution
Accuracy @ +25°C
Temperature Drift
2.5 readings/second
0.1Vdc
±.1V (typ.), ±.2V (max.)
(–25 to +60°C) ±0.05V/°C (max.)
Mechanical
Dimensions
1.50"diameter x 1.15 depth"
(38.1 x 29.2mm)
Display Type
Four digit, LED, 0.30" high (7.6mm)
Weight
0.8 ounce (23 grams)
Case Material
Polycarbonate
Terminal Block Torque
3.6 in-lbs (0.4 N-m)
Wire Size And Type
18-22AWG (0.83-0.33mm²) copper,
solid or stranded
Wire Insulation Strip Length _{0.25" (6.4mm)}
Environmental
Operating Temperature _{–25 to +60°C}
Storage Temperature
–40 to +75°C
Humidity (non-condensing) _{0 to 85%}
➀ Operation and accuracy at inputs above or below these ranges are not specified.
NANO
DMR20-1-ACV
Self-Powered,
85 to 264Vac, LED Display Line Monitor
Murata Power Solutions’ new DMR20-1-ACV self-powered, AC line-voltage monitors are
designed to measure and display the true-rms voltage of AC power systems. Simply con-
nect any 85 to 264Vac 50/60Hz power source and these meters are fully operational—no
additional components or power sources are required. The unit can also measure distorted
AC power sources including triangle, square, and the quasi-sine output of many DC to AC
power inverters.
The DMR20-1-ACV is housed in a rugged, round polycarbonate case that provides excellent
protection against moisture, dust, shock and vibration. Panel installation is straightforward:
Using readily available tooling, simply drill and punch a 1.2 inch (30.5mm) diameter hole and
anti-rotation notch, insert the meter and gasket, and securely fasten the meter using the sup-
plied hex nut. The supplied hardware is designed to provide protection to IP67/NEMA 6.
Their large, 0.30"/7.6mm, bright LED displays can be easily read from 10 feet away (3
meters). These meters accurately display ac voltages with 0.1V resolution. A built-in reset-
table fuse assures long term reliability. All DMR20-1-ACVs employ a 13-bit A/D converter
and precision metal-film resistors to achieve outstanding performance over an operating
temperature range of –25 to +60°C.
Ordering Information
DMR20-1-ACV-R-C 85 to 264Vac voltage monitor (Red LED)
Knockout Punches
DMR20-1-KP
1.2" (30.5mm) Round knockout punch
DMR20-2-KP
(no keying notch)
1.2" (30.5mm) Round knockout punch
DMR20-3-KP
(with four keying notches)
1/8" and 3/16" (3.2 and 4.7mm)
key-notch nibbler tool
Note: An M30 x 1.5 nylon hex nut and EPDM sealing gasket are supplied with each
meter. The “-C” suffix denotes RoHS compliance.
Ḥ
For full details go to
www.murata-ps.com/rohs
(pending)
(pending)
www.murata-ps.com/support
MPM_DMR20-1-ACV.A02 Page 1 of 4