Overview
Enviro Testers high precision temperature adopts modularized structure to output alarm, sensor auxiliary power supply, forwarding, printing, communication, and other functions. Measurement data can be displayed in a variety of types, such as bar chart graphic display, real-time trend, historical trend memory, real-time circular chart, historical circular chart memory, alarm state display, etc. Curves and data can also be printed by small printer through RS232 port.
Features
- 7 in (177.8 mm) TFT color LCD
- Wide viewing angle
- High brightness and high contrast
- USB standard interface data export
- Using SMT technology, the design is more concise
- The 32 bit high performance and highly integrated RAM processor
- The photoelectric isolated RS 485 communication interface
- Avoids the interference between channels
- The supporting software supports PC data export and viewing
Technical Specifications
| Input Signal | RTD-Resistance bulbs 3 types (Pt100, CU50, CU100) |
| Linear DC Voltage (0 V to 5 V DC, 1 V to 5 V DC,0 V to 10 V DC) | |
| DC Current (4 mA to 20 mA, 0 mA to 10 mA) | |
| 0 mV to 20 mV, 0 mV to 60mV, 0 mV to 100 mV, 0 mV to 500 mV | |
| Accuracy | 0.2 grade when RTD, linear voltage, linear current and T.C input |
| 0.2% FS ±35.6 °F (±2.0 ℃) when T.C input with cold junction compensation by internal part of recorder | |
| Sampling Rate | ≤1 s |
| Temperature Shift Coefficient | Standard value 50 PPM |
| CMR Ratio | 85 dB to 110 dB |
| Input Independence | 0 V DC to 5 V DC and 1 V DC to 5 V DC input 500 KΩ |
| 4 mA to 20 mA input 250 KΩ | |
| 0 mA to 10 mA input 500 KΩ | |
| Other signal input 20 MΩ | |
| Isolation | Isolated voltage between channels and ground 1000 V AC
Isolated voltage between channels 400 V AC |
| Input Error Action | Max, Min, Hold |
| Power supply | 100 V AC to 240 V AC, frequency 47 Hz to 63 Hz, max power consumption 5 V A |
| 24 V DC, max power consumption 5 V A (please advise when order) | |
| Insulation | When power insulation to ground is higher than 1500 V AC, leakage current 10 mA for one minute |
| When power insulation to housing is higher than 1500 V AC, leakage current 10 mA for one minute | |
| Aux. power supply | 24 V DC, max. 40 mA for sensor and transmitters, up to 8 points built in |
| Processor | 32 bits, high performance, and integrated ARM CPU |
| Hardware guider | CPU inner integration for long time, stable and safe operation |
| Hardware Clock | Adopt hardware real clock with high stability. Clock accuracy ±5 ppm. After power off, Li battery for continual power supply |
| validity of battery is 30 days | |
| Data Memory | All data will be stored in FLASH memory, not need reserve battery to ensure that all the history data and configuration |
| parameters will be not lost when power off | |
| Comm. Port | Photoelectrical isolated RS 485 communication interface |
| Comm. Protocol | Standard MODBUS- RTU comm. protocol, can communicate with modern HMI and DCS directly |
| Printing Port | Photoelectrical isolated RS 232C print port, Baudrate 9600 bps
Maximum print resolution 240 dot per line |
| Record Time | Record time = 45 days x record interval ÷ channel numbers. Can record 1 day data at least, also for 440 years at most |
| Display | 7.0 in (177.8 mm), 320 Pixel x 240 Pixel TFT, Color LCD display |
| Ambient | Working Temperature 32 ℉ to 122 ℉ (0 ℃ to 50 ℃) Relative humidity 10% to 85% (now dew) |
| Transport and storage -4 ℉ to 140 ℉ (-20 ℃ to 60 ℃) Relative humidity 5% to 95% | |
| Size | Dimension 7.68 in x 5.70 in x 2.38 in (195 mm x 145 mm x 60.5 mm) Panel Flush Mounted |
| Net Weight | Maximum 2.2 lb (1 kg) |
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