Two Channel Temperature Controller

The PTC-20 (npi electronic) temperature control system is designed for heating and cooling purposes in electrophysiological experiments. The PTC-20 system provides two independent temperature controller channels

Heating / cooling controllers are designed to be used with Peltier elements.

For more information on the PTC-20 please visit
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Two Channel Temperature Controller

The PTC-20 (npi electronic) temperature control system is designed for heating and cooling purposes in electrophysiological experiments. The PTC-20 system provides two independent temperature controller channels and is housed in a 19" standard rackmount cabinet with built-in power supply and cooling elements for the power devices. The PTC-20 system guarantees low noise operation and has special protection features to prevent the preparation from damage.

The PTC-20 incorporates two channels which include an electronic thermometer for small semiconductor sensor (standard is R2252, i.e. the sensor has a resistance of 2252 Ohms at 25 °C or optionally PT 100, i.e. 100 Ohms at 0 °C), a digital temperature display (XX.X °C) for each channel, a set value control with direct readout (XX.X °C), a PI (proportional-integral) controller with adjustable parameters, an output power control unit and a high-power bipolar output stage (±15 V DC, continuous operation) for Peltier elements (i.e. heat / cool operation) or resistive (i.e. heat only) loads with electronic protection circuits. For heat-only applications the bipolar output can be switched to unipolar operation (+15 V). The power outputs are short circuit protected, the output power is limited electronically. Maximum output voltage is approximately 15 Volt, the current is limited to 3 A.

SENSOR INPUT:
for semiconductor 2252 Ohms at 25 °C (standard) or platinum 100 Ohms at 0 °C,
accuracy typically 0.1 °C at 25 °C, with electronic protection

SENSOR INPUT (EXT. Mode):
1 mV / °C

ALARM and SHUTOFF:
disconnects POWER OUTPUT if temperature is below +3 °C (not connected or broken sensor) or above +45 °C (short circuited sensor)

DIGITAL DISPLAYS:
3 1/2 digits, XX.X °C (temperature of SENSOR A or B) or XX.X V (voltage at power output)

COMMAND INPUT:
analog input, 10 mV / °C, via BNC connector

SET VALUE CONTROL:
digital control, range 2-45 °C, XX.X °C or 0-100% of output voltage (DIRECT mode)

TEMPERATURE OUTPUT (A, B):
analog outputs, 10 mV / °C, via BNC connector, output impedance: 250 Ohms

POWER OUTPUT:
±15 V / 3 A for each channel, short circuit protected, continuous DC

LIMITER:
control for the output voltage with a linear range from 0 - 100 %

CONTROL:
PI (proportional-integral) controller, accuracy typically ±0.2 °C, gain range 10-10k, integration time 50 ms - 20 s (logarithmic scale)

MEASURING ACCURACY:
0.1 °C at 25 °C

POWER REQUIREMENTS:
115 / 230V AC, 60 / 50 Hz, fuse 4 / 2 A slow

DIMENSIONS:
19" rackmount cabinet 19" (483 mm), 10" (250 mm), 3.5" (88 mm).

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Below are options and additional accessories (at additional costs).

PTC-20
Two channel temperature controller
For heating and cooling, use with Peltier elements

TS100
Sensor
Temperature sensor for TC /PTC/ MTC systems

TS200
Sensor
Miniature temperature sensor for TC /PTC/ MTC systems