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Model 235 Cryogenic Temperature Transmitter
Analog output from resistive or diode temperature sensors down to 1 K Features DD Produces a single analog output in proportion to a measured temperature DD 0 to 10 V for local connections and 4 to 20 mA for remote scenarios DD Configurable output ranges for maximum temperature resolution DD Supports industry-leading Lake Shore sensors (Cernox™ diodes, platinum RTDs, etc.) DD Precision measurement circuitry with on-board conversion to calibrated temperature units DD High-speed mode allows rapid detection of a temperature change DD Enables monitoring at temperatures down to 1 K and up to 800 K DD Current reversal to minimize thermoelectric offsets The Model 235 cryogenic temperature transmitter makes the remote monitoring of extreme temperatures easier than ever before. Building on the proven technology of the existing Lake Shore temperature transmitter platform, the Model 235 offers significant improvements, such as a single module being compatible with multiple different sensor types and the ability to easily configure the transmitter via a USB interface. The measurement circuit has also been improved greatly, borrowing from the technology used in our highly accurate lab-quality temperature controllers. The Model 235 provides excellent backward compatibility with existing Model 231 and 234-based temperature transmitter systems by using the same VME form factor as the previous transmitter models and providing the same analog output options.
DD Fully configurable through direct USB connection DD 3U Eurocard form factor installs in any VME enclosure
Coming
Q1 2016
Lake Shore Cryotronics, Inc. | t. 614.891.2243 | f. 614.818.1600 |
[email protected] | www.lakeshore.com
Power sources Power supply (109-132) Comes standard with interchangeable input plugs Power requirements 100 to 240 VAC, 50 or 60 Hz, 0.3 A max Output +5 V at 1.2 A Size 40.5 mm W × 30 mm H × 64 mm D (1.6 in × 1.2 in × 2.5 in) Weight 0.15 kg (0.33 lb)
VME rack (2308-12) The 2308-12 VME card case holds up to 12 temperature transmitters. A +5 VDC power supply with universal input is provided with the case. Wall mount power supplies are not necessary with a 2308-12.
Specifications (preliminary) Analog input Number of inputs: 1 Measurement type: 4-lead Sensor compatibility: RTDs (e.g., Cernox™, platinum) and diodes Cernox Platinum Diodes Sensor units Ohms (Ω) Volts (V) Measurement 0 to 100 kΩ 0 to 1 kΩ 0 to 10 V range Excitation 100 nA to 1 mA 10 μA current 100 µA Measurement performance: Measurement resolution 2 K (with CX-1050) 0.06 mK 4.2 K (with CX-1050) 0.2 mK 4.2 K (with DT-670) 0.6 mK 77 K (with PT-103) 47 mK
Electronic accuracy ±0.57 mK ±2.1 mK ±15 mK ±104 mK
Thermometry Maximum update rate: 10 rdg/s Filter: Averages 2 to 64 input readings Temperature conversion: Lake Shore calibration curves Temperature reporting: Kelvin (K), Celsius (C), Fahrenheit (F)
Output Output range: 4 to 20 mA or 0 to 10 V Output compliance: 10 V (500 Ω max load) Output ranges: User settable (minimum and maximum) e.g., 2 to 300 K Output resolution: TBD Output accuracy: TBD Output temperature coefficient: TBD
Card slots 12 Output voltage +5 VDC, 100 mV peak to peak ripple Output current 6 A (max) Input power Universal 85 to 265 VAC, 47 to 440 Hz, 60 W Enclosure mounting Bench or full (19 in) rack Size 450 mm W × 178 mm H × 260 mm D (17.7 in × 7 in × 10.25 in) Weight 5.5 kg (12 lb)
Power requirement Voltage: 5 VDC ±5% Current: <500 mA Input: VME bus connector or front panel connector (barrel plug 5.5 mm OD × 2.1 mm ID × 9.9 mm length ) Protection: Overvoltage, overload, switched polarity Physical Dimensions: length 160 mm, height 100 mm, width 30.5 mm Mounting: VME enclosure or standalone Local programming: USB-B to local computer Environmental Compliance: RoHS, CE Operating temperature: -20 °C to +60 °C Storage temperature: -30 °C to +85 °C Relative humidity: 0 to 95% at 50 °C non-condensing
For more information, go to www.lakeshore.com Lake Shore Cryotronics, Inc. | t. 614.891.2243 | f. 614.818.1600 |
[email protected] | www.lakeshore.com
