Our products

• Temperature and process inputs: Platinum sensor, thermocouple, mV, mA, potentiometer
• 2-wire output powered by the 4-20mA loop
• Input/output galvanic isolation
• 4-digit LCD display, 10,000 counts
• Fully configurable RS232 and HART
• CNL70-H HART Protocol FDT-certified HART DTM drivers
• SIL2 compliance according to IEC 61508

The CNL70 is a programmable digital signal conditioner powered by a 4–20 mA current loop (
) with an LCD display, designed for measuring temperature sensors (thermocouples and PT100s) as well as process signals (mV, mA). Optionally, it can include Hart protocol communication and meet the SIL2 safety integrity level (
) in accordance with IEC 61508.

• Process and temperature inputs: voltage (V), mV, current (mA), potentiometer, thermocouple, PT100
• 2-wire technology powered by the 4-20 mA loop
• Galvanic isolation
• Fully configurable
• Measurement display (10,000 points)
• High thermal stability

The CNL45D is an isolated digital transmitter powered by a 4–20 mA loop, combining the ease of
implementation of two-wire technology with the flexibility of configurable converters.

• Programmable process and temperature inputs: Volts, mV, mA, potentiometer, thermocouple, PT100
• 2-wire configuration powered by the 4-20mA loop
• 1000V input/output galvanic isolation
• Fully configurable RS232 interface
• High thermal stability 50 ppm
The CNL45 is an isolated digital transmitter powered by the 4-20mA loop, combining the ease of implementation of
œ two-wire technology with the flexibility of configurable converters.

• Temperature and process inputs
, PT100 platinum sensor (2-, 3-, or 4-wire configuration), thermocouple,
, mV, mA, potentiometer

• 2-wire output: powered by the 4–20 mA loop
• Galvanic isolation: input/output
• Fully configurable: USB connection, HART protocol, FDT-certified HART DTM drivers

• SIL2 compliance according to IEC 61508
• Compact width: 18 mm
The CNL25igD is an isolated transmitter for DIN rail mounting, powered by the 4–20 mA loop
, designed for measuring temperature or process signals. The CNL25igDH incorporates the HART communication protocol
, is FDT-certified, and is available in SIL2 compliance according to IEC 61508.

• Process and temperature inputs
: voltage (V, mV), current (mA), potentiometer (
), thermocouple, PT100
• 2-wire technique powered by the 4-20mA loop
• Galvanic isolation
• Fully configurable
• Compact DIN rail housing
The CNL25ig is a programmable, isolated DIN rail-mounted transmitter, powered by the 4…20mA loop
and featuring a very compact design for applications with limited space.

• Temperature input: PT100, thermocouple
• Compact design: 17 mm
• Plug-in connectors
• 2-wire technology: powered by the 4-20 mA loop
• Fully configurable: USB connection

The CNL25 is an entry-level, DIN-rail-mountable, 4–20 mA loop-powered programmable transmitter
that supports all temperature measurement methods (PT100 and thermocouples)
across all measurement ranges with a single product.

• CALP45: Pt100, Pt1000, Ptxxx input, 2- or 3-wire configuration
• CALT45: Thermocouple input
• CAL45: mV, V (dc), mA (dc), potentiometer input
• Isolation: input/output
• 2-wire technique powered by the 4-20mA loop

• LED for immediate monitoring of the loop and sensor
Green LED: 4–20 mA loop OK; Red LED: sensor fault

• SIL 2 and SIL 3 compliance in accordance with IEC 61508

The CAL45 series signal conditioners convert input signals from Pt100, thermocouples, mA, mV
, or potentiometers into a 4–20 mA current output using isolated 2-wire technology. Their use is recommended
to eliminate ground loops or to protect the data acquisition system.

• CALP25 PT100, PT1000 input (2- or 3-wire configuration)
• CALT25 thermocouple input
• CAL25 mV, mA, and potentiometer inputs
• 2-wire configuration, loop-powered by the 4-20 mA loop
• 3-wire configuration, 0-10 V output
• CAL25isoV isolator
0..10 V inputs, 0…10 V output, 24 Vdc power supply
+/-10 V inputs, +/-10 V output, 24 Vdc power supply

• Loop and sensor status LEDs
Green LED: 4–20 mA loop OK
Red LED: Sensor fault

• SIL2 and SIL3 compliance according to IEC 61508
The CAL25 series signal conditioners allow for a Pt100, thermocouple, mA, mV, or
potentiometer input to produce a 4…20 mA current output (2-wire configuration) or a
0..1..5..10 V voltage output (3-wire configuration). The CAL25isoV is a compact 1:1 voltage isolator