Monitor and control temperature with precision using the CN38S Series controllers. The CN38S Series offers an innovative solution for programming through an ergonomic keypad which uses the technology “Sensitive Touch”. This sensor keyboard guarantees complete protection from dust and liquids in every critical environmental situation. Providing on/off control or PID control with Autotune, this controller is the solution for many applications. The CN38S series offers a soft start feature. This function makes it possible to eliminate thermal shock and mechanical stress (due to dilatation) that a system undergoes during start up. In other cases the aim is that of slowing down the increase in temperature in such a way that this can spread itself out evenly inside the material, especially when the machine is equipped with ‘stirrers’ that cannot be started up at room temperature. The CN38S also offers a compressor protection time feature, where some actuators, compressors, and pumps cannot be turned off or turned back on too quickly for their constructive characteristics. To protect the working life of the device it therefore becomes essential to be able to activate a timer that guarantees the minimum time between the switching off of the machine and the following start up.
Specifications Power Supply: 12 Vac/Vdc, 24 Vac/Vdc, 100 to 230 Vac/Vdc (±10%) Power Consumption: Maximum 6VA Device Class: Class II Nominal Pulse Voltage: 2.5 KV Category of Overvoltage: II Isolation: Reinforced isolation between low voltage (input and output relay) and frontal parts; reinforced isolation between low voltage and very low voltage parts (inputs, static outputs) Thermocouple Input Type: J, K programmable Resolution: 0.1°C with automatic scale change Unit of Measurement: °C or °F programmable Cold Junction: Automatic compensation 0 to 50°C Cold Junction Accuracy: 0.1°C/°C @ 25°C after a warm-up (instrument switch-on) of 20 minutes Calibration: According to EN 60584-1 Burn-Out: At the end of scale Thermocouple Type Range: J: -40 to 999°C (-40 to 999°F) K: -40 to 999°C (-40 to 999°F) RTD Type: Pt 100 and Pt 1000, 2-wire Resolution: 0.1°C with automatic scale change Unit of Measurement: °C or °F programmable Burn-Out: At the end of scale RTD Range: -50 to 850 (-58 to 999°F) -50.0 to 99.9 (-58.0 to 99.9°F) Thermistor Input Type: PTC: 990 Ω @ 25°C NTC: 10 kΩ @ 25°C Unit of Measurement: °C or °F programmable Model Range: PTC: -50 to 150°C (-67 to 302°F), -50.0 to 99.9°C (-67.0 to 99.9°) NTC: -50 to 110°C (-58 to 230°F), -50.0 to 99.9°C (-58.0 to 99.9°F) Outputs Output: 1 and 2 Function: Control output Output Action: Direct/reverse, programmable Type: Relay output Contact: SPDT Contact Load: Out 1 - 8 A/250 Vac on resistive load - 3 A/250V Relay Electric Life: 100,000 operations DC Pulse: Isolation: Output NOT isolated as regard the very low voltage parts Logic State: 1: 12V ±20% @ 1 mA, 10V ±20% @ 20 mA 0: <0.5V Mounting: Flush in panel Dimensions: 78 x 35 mm (3.07 x 1.38'), depth 64 mm (2.52') Panel Cut-Out: 71 (2.8') x 29 (1.14') Display: 3-digit single display, red, 12 mm (0.47') Weight: 180 g (6.3 oz) approximately Screw Terminals: 11 screw terminals (screw M3 for cables 0.25... 2.5 mm2 or AWG 22... AWG 14) Protection Degree: Front Protection: IP 65 (with gasket) according to EN60070-1 for indoor use Screw Terminal: IP20 Operating Temperature: 0 to 50°C (32 to 122°F) Operating Humidity: < 95 RH% without condensation Storage Temperature: -25 to 60°C (-13 to 140°F) Overall Accuracy: ±(0.5% span ±1 digit @25 °C) Sampling Rate: 1 s Display Updating Time: 1 s
Rated 5 out of
It's the Bomb!This little unit works sweet. If you need a 12 volt controller, this is the bomb! I am using this as a fan control for my rocket stove. I needed a higher sensor range than I could get with the 15 dollar Inkbird controller. I haven't had much experience with controllers other than an Inkbird 120v that I used for an old coffee vending machine @ 95c max, and Omega CN7500 120v that I used for a kiln. It seems easy enough to operate. NOTE, the sensor must be isolated. I blew up the first two (my fault) by not isolating the probe from the metal frame of the rocket stove.
I'm trying to use the CN38S-TC-DC1-DC2 with a refrigerator and set the "PCT" "compressor protection time" to 5 minutes. this wait-time is however ignored and it keeps switching on and off within a few seconds. does "PCT" only work in On/OFF mode?
Asked by: Anonymous
Thank you for contacting Omega. The PCT feature is only available if at least one output is programmed as cooling. With the controller being connected to a refrigerator, that would be a cooling application. Our Tech Support engineer has emailed you to confirm that you do have the controller programmed for cooling and help resolve this for you.