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Operates Down to 1.2 K with Appropriate Sensors
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2 Sensor Inputs
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Supports Diode, RTD, and Thermocouple Sensors
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Sensor Excitation (Current Reversal Eliminates Thermal EMF Errors for Resistance Sensors)
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2 Autotuning Control Loops: 25 and 2 W Max
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Control Loop 2: Variable Vdc source from 0 to 10 V Max
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IEEE-488 and RS232C Interfaces
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View related products - Superconductivity and Cryogenics Temperature Measurement
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The CY325 Series dual-channel temperature controller
is capable of supporting nearly any diode, RTD, or
thermocouple temperature sensor. Two independent
PID control loops with heater outputs of 25 and 2 W
are configured to drive either a 50 or 25 Ù load for
optimal control flexibility. Designed with ease of use,
functionality, and value in mind, the CYC325 Series is
ideal for general-purpose laboratory and industrial
temperature measurement and control applications.
SPECIFICATIONS
Thermometry
Number of Inputs: 2
Input Configuration: Each input is factory configured for either diode/RTD or thermocouple
Isolation: Sensor inputs optically isolated from other circuits but not each other
A/D Resolution: 24-bit
Input Accuracy: Sensor dependent, refer to input specifications table
Measurement Resolution: Sensor dependent, refer to input specifications table
Max Update Rate: 10 rdg/s on each input (except 5 rdg/s on input A when configured as thermocouple)
Filter: Averages 2 to 64 input readings
Sensor Input Configuration Diode/RTD:
Measurement Type: 4-lead differential
Excitation: Constant current with current reversal for RTDs
Supported Sensors: Diodes, silicon, GaAlAs; RTDs, 100 ΩPlatinum, 1000 Ω Platinum, germanium, carbon-glass, CernoxTM, and RoxTM
Standard Curves: CY7 and CY670, PT-100, PT-1000, RX-102A, RX-202A
Input Connector: 6-pin DIN
Thermocouple:
Measurement: 2-lead, room temperature, compensated
Excitation: N/A
Supported Sensors: Most thermocouple types
Standard Curves: Type E, Type K, TypeT, AuFe 0.07% vs Cr, AuFe 0.03% vs Cr
Input Connector: Ceramic isothermal block
Control
Control Loops: 2
Control Type: Closed loop digital PID with manual heater output or open loop
Tuning: Autotune (1 loop at a time), PID, PID zones
Control Stability: Sensor dependent, see input specification table
PID Control Settings:
Proportional (Gain): 0 to 1000 with 0.1 setting resolution
Integral (Reset): 1 to 1000 (1000/s) with 0.1 setting resolution
Derivative (Rate): 1 to 200% with 1% resolution
Manual Output: 0 to 100% with 0.01% setting resolution
Zone Control: 10 temperature zones with P, I, D, manual heater out, and heater range
Setpoint Ramping: 0.1 K/min to 100 K/min
Safety Limits: Curve temperature, power up heater off, short circuit protection
Front Panel:
Display: 2-line, 20-character, liquid crystal display with 5.5 mm (0.216") character height
Number of Reading Displays: 1 to 4
Display Units: K, °C, V, mV,
Reading Source: Temperature, sensor units
Display Update Rate: 2 rdg/s
Temp Display Resolution: 0.001° from 0 to 99.999°, 0.01° from 100 to 999.99°, 0.1° above 1000°
Sensor Units Display Resolution: Sensor dependent; to 5 digits
Other Displays: Setpoint, heater range, and heater output; user selected
Setpoint Setting Resolution: Same as display resolution (actual resolution is sensor dependent)
Heater Output Display: Numeric display in percent of full scale for power or current
Heater Output Resolution: 1%
Display Annunciators: Control input, remote, autotune
Keypad: 20-key membrane, numeric and specific functions
Front Panel Features: Front panel curve entry, keypad lock-out
Interface
IEEE-488 Interface Features: SH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT0, C0, E1
Reading Rate: To 10 rdg/s on each input
Software Support: LabVIEWTM driver; consult factory for availability
Serial Interface:
Electrical Format: RS232C
Baud Rates: 9600, 19200, 38400, 57600
Connector: 9-pin D-style, DTE configuration
Reading Rate: To 10 rdg/s, each input
General
Ambient Temperature: 15 to 35 °C (59 to 95ºF) at rated accuracy, 5 to 40 °C (41 to 104ºF) at reduced accuracy
Power Requirement: Standard 120 Vac, optional 240 Vac, 6%, -10%, 50 or 60 Hz, 85 VA
Dimensions: 89 H x 216 W x 368 mm D (3.5 x 8.5 x 14.5"), half rack
Weight: 4.00 kg (8.82 lb)
Approval: CE mark
Input Specifications
| | Sensor Temp Coefficient | Input Range | Excitation Current | Display Resolution | Measurement Resolution | Electronic Accuracy (at 25°C) | Electronic Control Stability1 |
|---|
| Diode | Negative | 0 to 2.5 V | 10 µA
±0.05%2,3 | 100 µV | 0.4 µV | ±80 µV
±0.005%
of rdg | ±20 µV |
| Diode | Negative | 0 to 7.5 V | 10 µA
±0.05%2,3 | 100 µV | 10 µV | ±80 µV
±0.001%
of rdg | ±40 µV |
| PTC RTD | Positive | 0 to 500ø | 1 mA4 | 10 mø | 2 mø | ±0.004ø
±0.01%
of rdg | ±4 mø |
| PTC RTD | Positive | 0 to 5000ø | 1 mA4 | 100 mø | 20 mø | ±0.004ø
±0.02%
of rdg | ±40 mø |
| NTC RTD | Negative | 0 to 7500ø | 10 µA ±0.05% | 100 mø | 40 mø | ±0.1ø
±0.04%
of rdg | ±80 mø |
| Thermocouple | Positive | ±25 mV | N/A | 1 µV | 0.4 µV | ±1 µV
±0.05%
of rdg5 | ±0.8 µV |
| Thermocouple | Positive | ±50 mV | NA | 1 µV | 20 µV | ±1 µV
±0.05%
of rdg5 | ±0.8 µV |
1 Control stability of the electronics only, in ideal thermal system
2 Current source error has negligible effect on measurement accuracy
3 Diode input excitation can be set to 1 mA
4 Current source error is removed during calibration
5 Accuracy specification does not include errors from room temperature compensation
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† All dollar amounts on this site are shown in US currency.
Note: Comes with heater output connector (dual banana jack), sensor input mating connector (6-pin DIN plugs), terminal block (2-pin), power cord and operator’s manual.
Add suffix "-240" for 240 Vac power supply, no additional cost.
Ordering Example: (1) CYC325 2 inputs silicon diode/RTD controller, USD$229,780.00
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