Download CONFIGURABLE 2-WIRE 4-20 mA TRANSMITTER Head

CONFIGURABLE 2-WIRE
4-20 mA TRANSMITTER
Head mounting
CM-40
DESCRIPTION
CM-40 is a configurable 2-wire temperature transmitter for
mounting on the connection head of a temperature
probe.
Built using SMD technology, the input and ranges can be
configured by "straps" (solder link).
Ready to connect to J and K, TC or RTD sensors giving
an output according to the specified sensor range.
Configurable on J or K TC
and RTD (Pt 100)
● CONFIGURABLE INPUT AND RANGE
● ONE TYPE FOR MOST FREQUENTLY USED KINDS
OF SENSORS REDUCES INVENTORY
● 4-20 mA OUTPUT, TWO-WIRE CONNECTION
● ELIMINATES THE NEED FOR COMPENSATION
OR EXTENSION LINES
● ECONOMIZES SPACE AND WIRING
● HIGH SECURITY TRANSMISSION LINE
● CAN BE MOUNTED ON PROBE HEADS SUCH AS
DIN B, DIN A, BBK, DA, DAN, ETC., 1.3" (33 mm)
● CE CERTIFIED (EMC DIRECTIVE)
(CM-40../PS)
FEATURES
The CM-40 is a new transmitter fully configurable with both
TC and RTD sensors and ranges via a simple solder link inside.
Can even be recalibrated in the field without special
difficulty.
Fine Zero and Span adjustments using internal precision
trimmers.
The CM-40 converts a low level signal from a TC or RTD Pt 100
sensor into a 4-20 mA process signal without power supply in
the field.
It can be mounted easily with security barriers (classified
areas) because it uses only two wires for power and
transmission.
In TC mode compensates the Cold Junction automatically
from 32 to 122°F (0 to 50°C). TC units are non linearized
output. Other thermocouple inputs are available (u.r.).
In RTD mode 3-wire connection, the output is fully
linearized.
Provides a sensor break detector. The output will go to over
20 mA when the sensor or wires break.
Its compactness and hole fixations allow it to be mounted
on any type of probe head, from 1.3" (33 mm) to 1.9" (49 mm)
raster.
Eliminates the use of compensation lines allowed the use of
two-conductor copper wire, and minimizes the effects of
electrical noises in long lines.
All PCB and terminals are dust and moisture protected by a
plastic housing. Upon request the electronic components
can be completely sealed in a coat of rugged epoxy.
We can provide the CM-40 for hazardous areas with
CENELEC approval for EEx ia II C, T4, T5, T6, to use in
intrinsically safe circuits.
NOTE: We manufacture a large range of digital instruments
for use with the CM-40, all with 4-20 mA input.
126.33
WIRING DIAGRAM
Available for TC, mV, mA and RTD, Ohms, etc.
Input: Thermocouple (w/ CJC), mV, mA
Output 4-20 mA (direct rated input/output)
Input: (RTD) Pt 100, Ni 100, (3- wire), Ohms, Potentiom.
Output 4-20 mA (linearized in Pt 100)
Application example: CM-40 with built-in power supply
configurable indicator LS-3200
LS-3200
CM-40 STANDARD SERIES (w/o suffix) Ranges on Stock:
Thermocouple J °F (°C)
32/392 (0/200)
32/752
(0/400)
Thermocouple K °F (°C)
32/1472 (0/800)
32/2192
(0/1200)
Pt 100 °F (°C)
32/122 (0/50)
(0/100)
32/212
24 V
32/1112 (0/600)
Input Signal 4-20 mA
CM-40 with ZENER barrier or galvanic insulator (CM-40 on
Ex-Proof enclosure) and field Ex-Proof LCD Indicator
32/392
(0/200)
32/752
(0/400)
Ex-Proof Loop
Powered Field
Indicator
CM-40/E SPECIAL SERIES (/E) Special Range or Special
Input: (factory configured only):
Thermocouples J, K, T, N, E
Thermocouples S, R, B
mV or mA
RTD, Ohm
FAC-24/1000
Min. Span 32/212 °F (0/100 °C)
Min. Span 32/1472 °F (0/800 °C)
Min. Span 10 mV
Min. Span 122 °F (50 °C) or 20 Ω
ZENER
Barrier
CM-40/N CONFIGURABLE SERIES (/N) User Configurable:
Ex-Proof Area
Thermocouple J °F (°C)
32/392 (0/200)
32/752
(0/400)
32/1112 (0/600)
Thermocouple K °F (°C)
32/1112 (0/600)
32/1472
(0/800)
32/2192 (0/1200)
RTD °F (°C)
-148/-58 (-100/-50)
-148/32 (-100/0)
-148/122 (-100/50)
-148/212 (-100/100)
-148/302 (-100/150)
-148/392 (-100/200)
-148/482 (-100/250)
-148/572 (-100/300)
(-50/0)
(-50/50)
(-50/100)
(-50/150)
(-50/200)
(-50/250)
(-50/300)
(-50/350)
DAS-8000
Safety Area
32/1472 (0/800)
Maximum CM-40 unit with single power supply:
32/122
32/212
32/302
32/392
32/482
32/572
32/662
32/752
(0/50)
(0/100)
(0/150)
(0/200)
(0/250)
(0/300)
(0/350)
(0/400)
212/302
212/392
212/482
212/572
212/662
212/752
212/842
212/932
(100/150)
(100/200)
(100/250)
(100/300)
(100/350)
(100/400)
(100/450)
(100/500)
FAC-24/1000
-58/32
-58/122
-58/212
-58/302
-58/392
-58/482
-58/572
-58/662
9931 H126.33-4
SPECIFICATIONS
No. CM-40 =
mA max. Pow. Sup.
25
DIMENSIONS
Weight: 0.8 oz. (25 g)
HOW TO ORDER
- CM-40 (Normalized Range on Stock) (see Specifications)
- CM-40/E (Special Input or Range u/request) (see Specif.)
Av. Frederic Rahola, 49 - 08032 BARCELONA (Spain)
Tel. (+34) 93 358 6011 - Fax (+34) 93 357 6850*
e-mail:[email protected] - http://www.desin.com
CM-40
126.33
- CM-40/N (User Configurable and Calibrate)
The contents of this sheet are subject to change without notice
COMMON SPECIFICATIONS
- Output: .................................................... 4-20 mA 2-wire
- Input Impedance: ............................................ 1 Mohm
- Excitation Current (Pt 100): ............................. 0.23 mA
- Circuit Breaker Protection: ............... Upscale >30 mA
- Power supply: ................. (Polarity Protec.) 12 - 45 Vdc
- Load Capability: .................. max. 600 ohm at 24 Vdc
- Accuracy:
TC, mV or mA ........................................................... 0.1%
RTD ................................................................... 0.1 to 0.25
- Lineality: ............................................... 0.06% full range
- Recalibration: .................... Fine Zero and Span adjust
- Zero Drift: ....................................................... ±0.02% /°C
- Voltage Supply Effect: .............................. ± 0.002% / V
- Max. Cold Junction Comp. Temp.: 32/122°F (0/50°C)
- Operating Temperature: .............. -4/158°F (-20/70°C)
- RFI Immunity: ................. CE certified (EMC Directive)
- Housing: ..................... ABS, with protection cover and
large hole fixation, from 1.3" (33 mm) to 1.9" (49 mm)
- Enclosure Protection: ........................ Nema 2 (IP-42)