Texmate UM-35ACI1 Datasheet

General Features

The UM-35ACI1 and UM-35ACI5 are low cost, utility AC current
measuring meters. Their low resistance internal shunt, has a
very low burden of 0.1VA and 0.5VA when directly connected to
1A or 5A CT's (current transformers) respectively. No matter
what the CT ratio, the 15 turn, infinitely adjustable Span poten-
tiometer enables the user to easily scale the meters to display
almost any current value required.
The UM-35ACI1 and UM-35ACI5 meters can withstand
momentary over loads of up to 200 Amps (40 times input sig-
nal) for one second without developing an open circuit.
Texmate's unique differential AC measurement circuit provides
a safe high impedance ohmic isolation on both sides of the shunt.
Typical Application Connections
AC Current measurement in Single-phase Systems.
Easily User Scaled to Display Currents up to 1999 Amps.
N
External L
O
5 Amp CT
A
D
L
5 Amp AC
For 1 Amp CTs order UM-35ACI1
AC Current measurement in Multi-phase Systems.
Easily User Scaled to Display Currents up to 1999 Amps
R
S
External L
O
5 Amp CT
A
D
T
5 Amp AC
For 1 Amp CTs order UM-35ACI1
UM-Series low cost utility meters for switchboard and process indication
UM-35ACI1/5 AC amps, Scaled RMS, (1 or 5 Amp internal shunt), 3.5 digit
UM-35AC..............AC volts, Scaled RMS. 199.9V AC/500V AC Header Selectable Ranges, 3.5 digit
UM-40AC ........AC volts, Scaled RMS. 500.0V AC full scale, high resolution 4 digit
UM-35HZ ........15Hz to 199.9Hz or optionally 40Hz to 500Hz up to 500V AC input, 3.5 digit
UM-35..................DC Volts ±2/20V DC Header selectable or optionally ±2/200V DC, 3.5 digit
UM-35MV ..........DC mV ±50mV and ±100mV select inputs to suit DC current shunts, 3.5 digit
UM-45 ............DC Volts ±2V/±20V/±200V DC Header selectable ranges 4.5 digit
UM-45MV ..........DC mV ±50 mV, ±100mV, or ±200mV selectable inputs to suit DC current shunts, 4.5 digit
UM-35ACI Data Sheet (UM03)
UM-Series
0.56"
LEDs
0.8"
LEDs
Utility AC current measuring meters designed for direct
connection to industry standard 1 Amp and 5 Amp CTs.
SPAN
UM-35ACI5
0.02Ω
ZERO
in 3 Phase 3 Wire and
3 Phase 4 Wire Systems.
SPAN
UM-35ACI5
0.02Ω
ZERO
Texmate, Inc. Tel. (760) 598-9899 • www.texmate.com
UM-35ACI1 &
UM-35ACI5
1 Amp and 5 Amp AC Meters
3 1/2 DIGIT with 0.56" or 0.8" LEDs
in a Traditional NEMA Style Case
Compatibility
The UM-Series NEMA case style is com-
plementary to Texmate's Classic RP-Series.
For economy, each UM model is dedicated
to a specific application. UMs are ideal for
upgrading or replacing the traditional USA
NEMA case panel meters presently in use.

Specifications

Input Configuration: .......Shunt input with differential auto zeroing
Full Scale Ranges: .........1 Amp and 5 Amp Inputs can be scaled to
Input Impedance: ............0.02Ω for 5A CT. Burden is only 0.5VA
A/D Converter: .................12 Bit Dual Slope
Accuracy: .........................±(0.05% of reading plus 2 counts)
Temperature Coefficient: 100 ppm/°C (Typical)
Warm Up Time:.................2 minutes to specified accuracy
Conversion Rate: .............3 conversions per second (Typical)
Display:.............................3 1/2 digit 0.56" Red LED display (std),
Decimal Selection:...........Header under face plate, X•X•X•X•
Overrange Indication: .....1 (MSD) displayed all other digits blank
Power Supply (std): .........120/240V AC, 50/60/400 Hz. approx 1.5W.
(Optn) VO-DC/ISO ..........Isolated Switcher 9 to 36V DC/12 to 24V AC
(Optn) VO-24V ................Isolated Transformer 24V AC ±10%
(Optn) VO-5V DC............Non-isolated 5V DC ±10%
Operating Temperature: ..–10 to 50 °C
Storage Temperature:......–20 to 70 °C.
Relative Humidity: ...........95% (non-condensing)
Case Dimensions: ...........Bezel 4.06"Wx1.89"H (102.7Wx47.9Hmm)
Weight:..............................10oz., 13oz. when packed.
UM-35CL ........Process 4 to 20mA (100.0), easily user scalable, 3.5 digit
UM-35CLE ......Process 4 to 20mA (100.0) with 24V DC excitation, easily user scalable in
engineering units anywhere from –1999 to +1999. 3.5 digit
UM-45CL ........Process 4 to 20mA (100.00), easily user scalable, 4.5 digit
UM-35P............Pressure, strain gage and load cell, 4 and 6 wire, 5V DC excitation,
Header Selectable Sensitivity 2mV/V, 5mV/V, 10mV/V, 20mV/V, 3.5 digit
UM-35J/K........J or K thermocouple input, 1° resolution, order °C or °F, 3.5 digit
UM-35RTD......100Ω platinum RTD, 3 or 4 wire, order °C or °F and 0.1° or 1°, 3.5 digit
AC to DC converter scaled in RMS.
A Zero pot is provided to offset the
displayed reading ±500 counts.
any desired display value from 0 to 1999.
0.1Ω for 1A CT. Burden is only 0.1VA
(optn) Green or Super Bright Red, 0.8"
Red or Green. Range 0 to 1999 counts.
Depth behind bezel 3.64" (92.22 mm) Plus
0.5 to .9" (12.7 to 22.8mm) depending on
connector used.
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