SEM160i RH/TEMPERATURE TRANSMITTER SEM160i SINGLE AND DUAL CHANNEL VERSIONS DIRECT USB CONFIGURATION (4 TO 20) MA LOOP OUTPUT DUCT AND WALL MOUNT VERSIONS SWITCH TO SELECT PRE-CONFIGURED RANGES FOR DUAL CHANNEL VERSION RH, TEMPERATURE, DEW POINT AND DELTA TEMPERATURE MEASUREMENT SELECTION INTRODUCTION The SEM160i is a low cost single/dual channel RH and temperature transmitter for industrial and BMS/HVAC applications. The unit can be supplied in single or dual channel ( two wire (4 to 20) mA ) versions, the single channel version has a thermistor mounted in the sensor tip for direct temperature sensing by the users. A USB HID interface is provided for user configuration using USBSpeedLink configuration software, allowing the user to select signal source and range for each channel. The dual channel version has four switch set ranges for easy onsite configuration. The four ranges can be programmed individually to the customers requirement off site via the configuration software. Single point alignment is provided for both temperature and humidity ranges. The configuration software also provides data readings together with a basic logger function for diagnostics. Wall and duct mount versions are available. SEM160i 1 FACTORY DEFAULT: - CH 1 SEM160i 2 + CH1 RH (0 to 100) % RH MCU COM M S 3 PT100 - SEM160i SENSORS CH 2 CH2 Version Switch=A Tamb (0 to 50) C 4 + 2 CH ver. only PC CONFIGURATION Type USB 2.0 Baud rate 19,200 baud Equipment PC running windows XP or later, USB cable. USB Speed Link Software Download from www.status.co.uk SEM160i RH/TEMPERATURE TRANSMITTER SPECIFICATIONS 20 C INPUT USER PROGRAMMING Via USB Speed Link Software (all temperatures in C) RH range (0 to 100) %RH RH accuracy Typically +/- 3% (+/- 5% Max) between (10 to 90) %RH SENSOR Temperature range (-30 to 100) C Humidity Single point offset correction Temperature accuracy +/- 0.5 C between (-20 to 80) %RH C Temperature Single point offset correction CH1 Source (RH, Temperature, Dew Dew point range (0 to 50) C point, Delta T), Range and error Delta temperature (Delta T)= Ambient temperature dew signal point temperature CH2 Delta T range (0 to 50) C Position A Source (RH, Temperature, Dew point, Delta T), Range and error Thermistor Optional discrete thermistor to signal replace second (4 to 20) mA Position B Source (RH, Temperature, Dew channel. point, Delta T), Range and error Thermistor to be read directly signal by user. Single channel version Position C Source (RH, Temperature, Dew only. point, Delta T), Range and error 10 K NTC, data on request. signal Position D Source (RH, Temperature, Dew CH1 (CH2) OUTPUTS point, Delta T), Range and error signal Output type 2 wire (4 to 20) mA current loop Read live data RH, Temperature, Dew point, Output range (4.0 to 20.0) mA Delta T, CH1 mA, CH2 mA, Output connection Two part screw terminal Date/Time Maximum output > 20.5 mA in high burnout Basic data log Text file saved to PC while condition connected via USB Minimum output < 3.9 mA in low burnout Tag number User entered condition Accuracy (mA output /2000) or 5 uA, whichever is the greater Loop voltage effect 0.2 uA / V The required configuration can be specified at time of Thermal drift 1 uA / C order, removing the need for user configuration. If the range is not specified the transmitter will be supplied with Maximum output load (Vsupply-10)/20 K Ohms the default CH1 (0 to 100) %RH 21.5 mA error signal. (Example: 700 Ohms 24V) CH2 (0 to 50) C 21.5 mA error signal. Channel isolation 500 Vdc Switch settings CH2 only Four switch selected ranges provided APPROVALS EMC - BS EN 61326 Electrical equipment for Note CH1 = main supply channel and must be powered, CH2 measurement control and acts as slave to CH1 laboratory use. ANNEX A Immunity test requirements for equipment intended for use in GENERAL SPECIFICATION industrial locations Update time 3 Seconds ANNEX F Test configurations, operational Start-up time < 10 seconds, I out < 4 mA conditions and performance criteria for transducers with during start up Power Supply (10 to 30) Volts dc integrated or remote signal conditioning. IEC 61000-4-2 Electrostatic discharge Operating temperature Electronics housing (-20 to 70) C IEC 61000-4-3 EM Field Probe (-30 to 100) C IEC 61000-4-4 Transient Burst (output) IEC 61000-4-5 Surge (output)