User manual Firmware version V2.0 8.5.2008 FTR262 Universal wireless transmitter Pt100, TC, mV, mA and V inputs

DESCRIPTION FTR262 is a wireless transmitter that has universal input and can be powered using batteries or 24 VDC power supply. It is housed in a field enclosure (IP65) and equipped with detachable screw post connectors for inputs and power supply. The wireless concept allows easy implementation, installation and expansion of a measuring system even in difficult locations and installation sites. The transmitter is programmable for transmission intervals from 5 seconds to 5 minutes and for the following inputs: Pt100, Ni, Cu, universal thermocouple (mV + cold junction temperature), ohms, millivolts,...

SUPPLY VOLTAGE FTR262 can be powered using standard AA batteries or external 24 VDC power supply. Note that the supply voltage selection jumper must be configured accordingly. Open the case, match the batteries to the + and - marks inside the battery holder and insert the batteries. Set also the supply voltage selection jumper to batteries position. External power supply FTR262 can be powered connecting 8...30 V external power supply to connector B. Open the case and connect the positive wire of the supply voltage to terminal 1 and the ground wire to terminal 2. Set also the supply voltage selection...

SETTINGS Use MekuWin program and programming cable or Nokeval 6790 hand held programmer to configure the device. You can download MekuWin from Nokeval’s web site www.nokeval.com for free. Connection settings Communication settings for configuration: • baud rate 9600 • protocol SCL • address 0 Programming connector The device has a 3PIN POL programming connector. Use POL-3PIN adaptor to connect a POLRS232 cable, DCS772 (USB-POL converter) or 6790 to the device. The 3PIN POL programming connector can be connected in both ways. When the programming connector is connected the device sends measurement...

Settings The configuration menu is divided in several submenus. The input settings are in a submenu called In. In submenu Sensor Input range and sensor selection. • Pt, Ni and Cu: Resistance thermometers (RTD’s). The nominal resistance is set in R0 (see below). The reading is in Celsius. • Ohm: Resistance input. The resistor is connected in two-wire, three-wire or four-wire connection. The reading is in ohms. • mV: Voltage input -30...2000 mV. • V: Voltage input -600 mV...100 V. • mA: Current input 0...25 mA. • TC: Thermocouples. Note! FTR262 doesn’t do linearization. If TC is selected, the result...

FTR262 User Manual Mea1, Sca1, Mea2, Sca2 Scaling points. Visibility of these settings depend on the Pts setting. Unscaled reading Mea1 is converted to Sca1, and Mea2 to Sca2. These scaling points can be conveniently used to calibrate a sensor-transmitter pair in a thermal bath. First set the scaling off by setting Pts=0. Apply one or two known temperatures to the sensor and write down the displayed and the real temperatures. Then set Pts to 1 or 2 depending on the number of calibration points, and write the first reading in Mea1 and the real temperature in Sca1. And the same with Mea2 and Sca2...

You must enable four-wire (4W) measurement in settings.

For example, if you have transmission interval of 20 seconds and one repeater, the maximum number of transmitters is 43*.

The collision probability of radio data packets increases when the number of transmitters in a coverage area increases or the transmission interval decreases. The following picture shows how the collision probability raises as the number of transmitters increases. Collision Probabilities With Different Transmission Intervals

SPECIFICATIONS Inputs Pt100 Range Accuracy Thermal Drift Ni100 Range Accuracy Thermal Drift Cu10 Range Accuracy Thermal Drift Thermocouples Accuracy Supply voltage 2 x 1.5 V alkaline AA batteries or external 8...30 VDC power supply Cold junction 0...40 °C ±0.75 °C -30...60 °C ±1.5 °C Thermocouple: See mV mV Range Accuracy Thermal Drift Load V Range Accuracy Thermal Drift Load mA Range Accuracy Thermal Drift Load The use of ”heavy duty” or ”long life” batteries is recommended. Replace both batteries at the same time and with the same type. Because alkaline batteries are prone to leak over time...

Environment Oper. temperature -30...+60 °C Protection class IP65 Compatible radio devices Nokeval MTR, RTR and FTR series radio devices. Dimensions Case: 80 mm x 130 mm x 60 mm (WxHxD) Radio transmitter Antenna connector: 50 Q female BNC connector Standard antenna: Quarter-wave whip antenna (BNC connector) Frequency range: License free 433.92 MHz subband f according to ERC/REC/70-03 Coverage area: • Open space: up to 500 m connector Protocol: Nokeval SCL protocol Configuration: PC with Mekuwin for Windows 98...XP or 6970 hand held programmer Regulations EMC directive • EMC immunity EN 61326 •...