Texmate, Inc. Tel. (760) 598-9899 • www.texmate.com
Page 2
UM-35-CL manual (UM04)
110/120 VAC
Selection header
200/240 VAC
Selection header
Component Layout
Calibration Procedure
Decimal Point Selection
1.XXX
1X.XX
1XX.X
1XXX
Cut loop to turn
OFF last digit
0.56" Display
Decimal Select
Header
Optional Isolated auto-sensing
AC/DC 9 to 36V DC / 12 to 24V AC
P.N.: PS7
Connector Pinouts
This meter uses plug-in type screw terminal connectors for all
input and output connections� The power supply connections
(pins 14 and 15) have a unique plug and socket outline to
prevent cross connection� The main board uses standard right-
angled connectors�
14 15
10 11
1 2 3
12
AC/DC Power
ZERO
SP
AN
HOLD
TEST
COMMON
AC
Neutral
– DC
AC
Line
+ DC
Signal Input Pin
This meter uses plug-in type
screw terminal connectors for
all connections�
Connectors
!
WARNING
:
AC and DC input signals and power supply voltages can be
hazardous. Do Not connect live wires to screw terminal plugs, and do not
insert, remove or handle screw terminal plugs with live wires connected.
Decimal selection
is made by moving
the jumper to the
indicated position
on the header for
the decimal required
on the front of the
display board�
To open meter,
insert
a flat head screwdriver
or similar instrument in
both slots on the side
of the cover and pry
open. The UM-Series
meters slide out from
the front of the case as
a complete assembly�
The first step
is to disengage the ZERO Pot and scale down the
Signal Span input to produce the desired Digital Display Span
output�
Signal Span
is defined as the total change of signal input that
would be required for a specific change of the Digital Display�
The largest Signal Span that can be specified with a 4 to 20mA
input is 16mA� A 4mA Signal Span proportionately scaled can
meet full scale display accuracy�
Digital Display Span is defined as the exact total in counts,
that the display would change within a specific Signal Span�
The largest Digital Display Span that can be displayed is -1999
to +1999 (4000 counts)� 16mA can not d4000, so
instead 4mA can be scaled to +1000�
The second step
is to select a Zero Offset Range and offset the
Digital Display Span with the ZERO Pot, until the desired reading
is displayed�
Maximum offset
is -3000 to +2000 counts� A Digital Display
Span of 4000 counts requires an offset of -3000 to display
-1999 to +1999�
For example
: A 4 to 20mA input to read -40�0°C to +199�9°C
Signal Span = 16mA, Digital Display Span = 2400 counts�
1� Remove the meter from its case and set the Zero Offset
Range Header to the Calibrate position� Select the 1400 –
3000 position on the Span Adjust Header and slide the meter
back into the case.
2� Connect power to the meter and apply 4mA (25% of 16mA)�
Adjust the SPAn Pot until the display reads +600 (25% of
2400)� The meter is now scaled for a Signal Span of 16mA
and a Digital Display Span of 2400 counts. In the example
4mA should read -400 and 20mA read 1999, therefore the
Digital Display Span should be offset by -1000�
3� Disconnect power and remove the meter from the case,
select the negative offset position on the ZERO OFFSET
RANGE Header, and slide the meter back into the case.
4� Connect power to the meter, apply 4mA and adjust the ZERO
Pot until the display reads -400. With the Digital Display Span
now offset by -1000 counts, the meter will read -400 for a
4mA input, and read +1999 for a 20mA input� Select decimal
point 1xx
•
x to display -40�0 to +199�9� Then apply the self
adhesive °C symbol (from the Face Plate Descriptor sheet
may be ordered� P�n:DU-CASEDES) to complete the calibra-
tion�
Exc. On/Off
Header
SPAn Pot
HI/LOW
SPAn RAnGE Header
ZERO Pot
ZERO ADJUST Header
SPAn ADJUST Header
ZERO OFFSET RAnGE
Header
