Wireless Transmitter for Sensor with mA or V Output
The new UWPC wireless process transmitter converts standard process signals (0 to 1V, 0 to 5V, 0 to 10V and 4 to 20 mA) into a wireless signal that can be transmitted up to 120 metres, eliminating the need for wiring runs in a variety of environments. The wireless transmitter is housed in an IP65 enclosure, providing water and dust protection. The UWPC transmits data at preset intervals, selectable from 2 to 120 seconds. Transmitted data includes the sensor reading, along with RF signal strength and battery status.
The UWPC is compatible with the UWTC-REC family of wireless receivers, which can accept signals from up to 48 wireless transmitters, and display them on a PC. Receivers are available with optional display and analog output. An analogue output can be used to interface with a process controller, PLC or data acquisition device. Each unit includes free software that converts your PC into a monitor, chart recorder or data logger. Readings can be saved and later printed or exported to a spreadsheet file.
Wireless Receivers
UWTC-REC1: 48-channel wireless receiver with USB
UWTC-REC2: 48-channel wireless receiver with USB and single analogue output
UWTC-REC4: 48-channel DIN rail mount wireless receiver with USB and four analogue output signals
SPECIFICATIONS:
Input Range: 0 to 1 Vdc, 0 to 5 Vdc, 0 to 10 Vdc or 4 to 20 mA
Accuracy: ±0.04% of range
Input Connection: Panel connector (mating connector supplied)
Computer Interface: USB, for initial transmitter/sensor setup and configuration
Transmit Sample Rate: Programmable from 1 sample/2 sec to 1 sample/120 sec
Radio Frequency (RF) Transceiver Carrier: ISM 2.4 GHz, direct sequence spread spectrum
RF Output Power: 10 dBm (10 mW)
Range of RF Link:
Outdoor Line of Sight: Up to 120 m
Indoor/urban: Up to 40 m
RF Data Packet Standard: IEEE 802.15.4, open communication architecture
Software (Included Free): Requires Windows® XP, 7, 8, 10 operating system
Power: One 3.6V, lithium "C" cell (included)
Battery Life (Typical): 3 years 1 sample/minute reading rate @ 25°C
Enclosure: NEMA 4 (IP65), polycarbonate
Enclosure Dimensions: 80 L x 82 mm W
Weight: 272 g

Understanding Sensor Output Signals
Have you ever wondered why there are a multitude of sensor output signals that can be configured on pressure, temperature, humidity, or gas sensing instrumentation used in process or HVAC applications? Most of these offerings were originally set up to allow sensor manufacturers to better align with the inputs offered by manufacturers of programmable logic controllers (PLCs) and direct digital controllers (DDCs), which are used for controlling processes for both automation and HVAC control.
I’d like to focus on two of the most commonly used output signals and zero in on the advantages and disadvantages...









