Texmate, Inc. Tel. (760) 598-9899 • www.texmate.com
September 10, 2003 CM-35XTL Data Sheet(X08)
Page 1
General Features
Compatibility
Specifications
CM-Series
A Multirange, Easily-Scaled 4-20 mA Process Meter with Screw
Terminal and Edge Connector Inputs, °C OR °F and less than 1 V Loop Drop.
The CM-35XTL is a functional replacement for the CM-35X
meter, but requires only a 1 V loop drop to operate, making it
especially suitable for current loops that would otherwise
exceed their power supply capacity with too many devices con-
nected. Its counterpart, the CM-35XT, is a lower-cost alterna-
tive to the CM-35XTL. It has the same pinout as the CM-35XTL
but a higher loop drop of 6.5V, making it suitable for applications
where fewer devices are in the current signal loop.
The meters feature Display Hold, Display Test and Auto-Polarity
indication. The polarity indication may be disabled or reversed
by repositioning jumper clips on internal header pins. Another
feature of the CM-series meters is the 4 1/2 digit LCD display
which provides for a non-active trailing dummy zero or a °C/°F
descriptor. Descriptor indication may be disabled or re-pro-
grammed by repositioning jumper clips on internal header pins.
The CM-35XTL & CM-35XT are designed to be easily user
scaled and calibrated to almost any conceivable engineering
unit, such as temperature, pressure, viscosity or flow rates etc.,
without requiring component changes.
Input Configuration: ....Series connection to 4-20 mA DC
current loop
Loop Excitation:............External
Full Scale Ranges:........Standard meter is adjustable to any scaling
between –1999 to +1999 without component
changes
Input Impedance: ..........1 volt drop @ 20 mA
Maximum Overcurrent: ....200 mA continuous
A/D Converter: ..............12 bit dual slope
Accuracy: ......................±(0.05% of r 2 digits)
Temperature Coefficient: ..100 ppm/˚C (typical)
Warm Up Time: ..............One minute to specified accuracy
Conversion Rate: ..........3 readings per second
Display: ..........................0.48" Liquid Crystal Display (LCD)
"Display Hold"
Polarity:..........................Automatically displays either "+" or "–";
header programmable polarity disable and
reversal
Decimal Selection: ........User programmable to three positions
Over-range Indication:..When input exceeds full scale on any range
being used, most significant "1" digit and
polarity symbol are displayed with all other
digits blank
Power Supply:..................No Separate Power Supply is Required; as
the unit derives its power from the
4-20 mA current loop signal
Operating Temp.: ..........–20°C to +50°C
Storage Temperature:........-20˚C to +70˚C
Relative Humidity: ............95% (non condensing)
Case Dimensions: ........Bezel (2.755”W x 1.170”H) 69.68mmW x 29.72mmH
Depth behind bezel (3.315”) 84.2mm
Plus (0.685”) 17.4mm for connector
Weight: ..........................87 gms (3.1 oz)
142 gms (5 oz) when packed
CM-35XTL
Loop-Powered Process Meter
3 1/2 Digit 0.48” LCD
in a Slim Bezel Case
Available in stackable
cases (see rear page)
Typical Application Connections
1
3
24V External
Loop Supply
Other devices can also be
added to the loop.
Fully User Scalable
+
+
_
_
CM-35XTL
ZERO
SPAN
10 to 1500
1400 to 3000
2900 to 4000
Negative
Mid Range
Positive
CAL
CM-35XT . . . . . . . . . . . . . . . . .3.5 digit LCD, Loop Powered, 4-20mA (1.0.0.0.0)
CM-35XTL . . . . . . . .3.5 digit LCD, 1 Volt Drop, Loop Powered, 4-20mA (1.0.0.0.0)
CM-Series, The Choice for Loop-Powered Meters
SLIM
BEZEL
The CM-Series is shipped in a standard Slim
Bezel case. The Slim Bezel case is compatible
with the TM, SM, PM, & SP Series of meters. The
CM-Series can be ordered in End Mount cases
for twin mounting or combinations of multiple
center mount cases and two end mount cases
for stack mounting.
