This product is no longer available. Some accessories, replacement parts, or services may still be available.
| Services Available |
|---|
Overview
The CS250DM is a Pt-1000 Class-A air temperature sensor for temperature gradient and stability analysis. This sensor delivers extremely accurate and precise air temperature data that is necessary for IEC 61724 Class-A solar monitoring applications and Delta Temperature (ΔT) calculations. It also includes a digital Modbus RS-485 output, ensuring data quality over long cable lengths.
Read MoreBenefits and Features
- High accuracy and precision
- Exceeds IEC 61724-1 standards for ambient air temperature measurements
- Exceeds EPA standards for ΔT measurements
- Digital Modbus RS-485 output ensuring data quality over long cable lengths
- Best-in-class noise protection and isolation meet IEC Class 4 standards
- NIST-traceable, serialized calibration certificate supplied with every sensor
Technical Description
The CS250DM uses a precision Pt-1000 Class A platinum resistor thermometer (PRT) to provide the highest level of accuracy. The cable includes a Campbell Scientific precision analog-to-digital, smart-sensor module for making the measurements. The module design is optimized for the class A PRT that minimizes self-heating and lead-wire resistance. Measurement electronics are surge protected with 1200 V isolation and environmentally protected with a rugged overmolding with an IP65 rating.
When exposed to sunlight, the CS250DM should be housed in the RAD06 6-plate radiation shield.
Images
Related Products
Specifications
| Measurement Uncertainty | ±0.3°C |
| Element Stem Material | 316L stainless steel sheathed |
| Surge Protection | 1200 V isolation |
| Supply Voltage | 5 to 30 Vdc |
| Power Draw | 15 mA |
| Temperature Coefficient | TCR = 3850 ppm/K |
| Stem Diameter | 0.32 cm (0.125 in.) |
| Overall Stem Length | 6.35 cm (2.5 in>0 |
| Sensor Dimensions | 17.15 x 11.13 x 6.05 cm (6.75 x 4.38 x 2.38 in.) |
| Sensor Weight | 90.7 g (0.2 lb) |
Sensing Element |
|
| Precision | 1000 ohm Class A platinum (Pt 1000) |
| Accuracy | ±(0.15 + 0.002T)°C |
| Long-Term Stability | Maximum Ro drift = 0.04% after 1000 hours at 400°C |
| Measurement Temperature Range | –75° to +250°C |
| Time Constant | 15 seconds in 5 m/s wind |
Communications |
|
| Protocol | Modbus RTU protocol (over RS-485) |
| Format | 8 data bits, 1 stop bit, even parity as default (user-configurable) |
| Baud Rate | 19,200 bps as default (user-configurable) |
| Modbus ID | Last two digits of serial number as default (user-configurable) |
Cable (Sensor Head to DM Board) |
|
| Wire Size and Type | 24 AWG (7/32,RT38) copper |
| Insulation Type | PFA insulated (Teflon®) |
| Insulation Rating | –75° to +250°C |
| Sheath | Thin PFA sheathed overall |
| Number of Cores | 3 |
| Physical Properties | Good abrasion and moisture resistance |
| Overall Diameter | 2.1 mm (0.08 in.) |
Cable (DM Board to PT) |
|
| Wire Size and Type | 24 AWG (7/32) tinned copper |
| Insulation Type | PVC |
| UL | AWM 10012 1000V 105°C |
| Filler | Fibrillated polypropylene as required for uniform round construction |
| Drain | 24 AWG (7/32) tinned copper (cabled, touching foil) |
| Shield | Aluminum/Mylar (100% coverage, 25% minimum overlap, foil facing in) |
| Nominal Wire Diameter | 0.61 mm (0.024 in.) |
Resources and Links
Downloads
CS250DM Example Program v.1 (1 KB) 07-12-2020
The example CR6 program measures four CS250DM sensors, averages the four temperature measurements, and calculates the standard deviation of the four sensors.
Listed Under
Privacy Policy Update
We've updated our privacy policy. Learn More
Cookie Consent
Update your cookie preferences. Update Cookie Preferences