PTC10 Programmable Temperature Controller
Introducing the PTC10 Programmable Temperature Controller from SRS — the ideal instrument for measuring temperature, controlling heaters, and logging temperature data.
The PTC10 Programmable Temperature Controller is a modular system that can be configured to suit a wide range of applications. The system consists of the PTC10 Controller and up to four I/O cards — two types of input cards for RTDs and thermocouples, and two types of output cards for controlling heaters. The I/O cards are ordered separately, and you can mix and match them in any way you wish.
The PTC321 input card supports up to four Pt RTD sensors. Each channel has a four-wire input with its own 1 mA current source for sensor excitation. The current can be reversed with each reading to cancel out stray thermocouple EMFs.
For thermocouples, the PTC330 four channel thermocouple input card should be used. It is factory configured to interface with either E, J, K or T type thermocouples. Each channel is electrically isolated allowing thermocouples to be attached to electrically-live equipment.
Both input cards have selectable low-pass filters that help reduce noise and improve PID feedback performance.
The PTC420 output card is a 120/240 VAC heater driver that delivers up to 5 A of current, and is intended to drive large heaters. Alternatively, the PTC430 DC output card delivers up to 50 VDC and 1 A of current for driving smaller heaters.
Each output card is supported with a digital PID controller algorithm with automatic as well as manual tuning capability. You can servo PID controllers to any of the input signals, or the difference of any two input signals.
Since the temperature of most heaters is proportional to the square of the heater current or voltage, a square root filter is available to linearize the PID output.
Up to ten unique temperature ranges can be programmed with their own PID parameters.
Data Acquisition and Display
All temperature input channels are read simultaneously at a sampling rate that can be set between 1 Hz and 50 Hz. Temperature data can be displayed numerically or graphically on the LCD display. A group of channels can be plotted on the same graph or on smaller individual graphs.
Upper and lower alarm levels, or rate-of-change limits, can be assigned to each input channel. If these limits are exceeded, an audible alarm sounds, and assigned relays change state.
Remote operation is supported with GPIB (opt.), RS-232 and Ethernet computer interfaces. All instrument functions can be controlled and read over any of the interfaces.
The PTC10 stores data on USB devices like flash keys, flash card readers, and USB hard drives. Data is stored in binary format to minimize file size and access time, but can be converted to ASCII text using an included application.
The PTC10 also has four configurable general purpose DACs/ADCs, eight bidirectional digital lines, and four relays.
The General purpose DAC/ADC card can be replaced by the PTC332 single slot Pt RTD input card allowing you to use all four I/O slots for output cards. This makes the PTC10 into a complete 4 chennel temperature controller.
The PTC10 Programmable Temperature Controller has the flexibility to handle virtually any temperature control application. It’s as useful in the research lab as it is in industry. The PTC10 is the right choice for all your temperature control experiments.
|PTC10 Temperature Controller|
|Data acquisition rate||1 to 50 Hz|
|PID feedback||Both manual and auto-tuning modes are available|
||320×240 pixel touchscreen
Both numeric and graphical data display
||Upper and lower temperature limits. Rate-of-change limits can be set on each channel
If exceeded, an audio alarm and a relay closure will occur
|# of ports||4 configurable DAC or ADC ports|
|Resolution||24-bit input, 16-bit output|
|Update rate||50 Hz|
|Computer interface||USB, Ethernet, and RS-232. GPIB is optional|
88 to 132 VAC or 176 to 264 VAC
47 to 63 Hz or DC
|Dimensions||17" × 5 " × 18 " (WHL)|
||One years parts and labor on defects in material and workmanship|
|PTC321 Pt RTD Card|
|Temperature||-200 °C to 550 °C|
|Inputs||Four 100 Ω Pt RTD 4-wire inputs|
|Noise||2 mKrms (10 samples/s)|
|Temp. coefficient||1.4 mK/°C|
||Selectable 1 and 10 second time constant (digital LPFs) are provided.|
|Signal detection||Card detects open and short circuit conditions|
|PTC330 Thermocouple Card|
|Thermocouple types||E, J, K, or T|
|E-type||-270 °C to 1000 °C|
|J-type||-210 °C to 1200 °C|
|K-type||-270 °C to 1370 °C|
|T-type||-270 °C to 400 °C|
|Inputs||Four thermocouple inputs|
|Input capacitance||<1 pF|
|Connector type||Omega mini thermocouple jacks|
|Accuracy||±500 mK (over 12 months)|
|Noise||20 mKrms (10 samples/s)|
|Temp. coefficient||20 mK/°C (type K thermocouple at 164.0 K)|
|Common mode isolation||250 VAC|
|PTC420 AC Output Card|
|Output voltage||120/240 VAC|
|Max. output current||5 A|
|Cycle time||Adjustable between 1 and 240 s|
|Max. line voltage||250 VAC|
|Surge current||100 A max. (non-repetitive)|
|Output resolution||0.1 % at 10 s cycle time|
|Heater resistance (min.)||24 W (110 VAC), 46 W (230 VAC)|
|PTC430 DC Output Card|
|Max. output voltage||50 VDC|
|Voltage ranges||20 V and 50 V|
|Max. output current||1 A|
|Current ranges||0.1 A, 0.5 A, 1 A (50 V) or 2 A (20 V)|
|Output resolution||16-bit (24-bit with dithering)|
||±1 mA (1 A range)
±0.1 mA (0.5 A range)
±0.01 mA (0.1 A range)
|Noise (rms), 25 Ω load
||200 µV (2 A range)
15 µV (0.5 A range)
5 µV (0.1 A range)