Wattchman RF Station Monitor/Alarm System Model 81090 & 81091

รายละเอียด

  Wattchman RF Station Monitor/Alarm System Model 81090 & 81091          Features    Protects Your Transmitter From High Reflected or Low    Forward Conditions   Continuous Display Of Forward and Reflected Power  Audible and Visual Alarms   Fast Fault Response (15ms)  Remote Reset Provision  110/220 VAC Input Switch  Amplified DC Outputs Two Year Limited Warranty   Description The Coaxial Dynamics Wattchman Monitor/Alarm measures forward and reflected RF power simultaneously in 50-Ohm coaxial cables and transmission lines. It is compatible with our entire series of 7/8" through 6-1/8" Line Sections and will accept plug-in elements that range from 5 watts to 100 kW full scale from 0.45 MHz to 2300 MHz. Similar in appearance to our 81070 & 81080 Series these units provide improved functionality at a reduced cost. Both models feature forward and reflected trip adjustments, a built in DC amplifier and 110/220 VAC input switch. Model 81090 has our standard 5/10/25 scales and Model 81091 has 15/30/60 scales. A Station Monitor/Alarm system installation consists of a Wattchman, a dual socket Line Section and two plug-in elements for monitoring both forward and reflected power. The Wattchman is supplied with two 25-foot DC cable assemblies for connection to the line section, and a 6 foot AC power cord. Installation requires inserting the line section into the transmission line, connecting the terminals of the transmitter interlock systems to the proper terminals on the Wattchman and providing AC power. Abnormal load conditions quickly cause transmitter shutdown within less than 15 milliseconds (including control relay). An audible single tone alarm will indicate system/transmitter malfunction. Relay contacts are provided for remote alarm and reset switching. Fail-Safe or Non-Fail-Safe mode is selected by a switch located on the rear of the instrument. Your confidence in the quality and dependability of the Models 81090 and 81091 Wattchman is assured with the Coaxial Dynamics Two Year Limited Warranty.     Specifications Power Range 5 W to 100 kW Frequency Range 0.45 MHz to 2300 MHz Meter Specifications 30µA full scale, ±5% 1400 ohms terminal resistance 4-1/2 inch movement Accuracy ±5% when used with proper Coaxial Dynamics line sections and elements Response Time Less than 15 milliseconds (including control relay function) Front Panel Controls Push button reset Trip set adjustments Rear Panel Controls Audible alarm switch Fail-Safe mode switches 110/220 VAC input switch Connections Meter inputs NO/NC control connections Remote alarm connections Remote reset connections AC power receptacle Amplified DC Outputs Contact Ratings 5A at 110 VAC non-inductive Power Requirements 110/220 VAC, 50/60 Hz, 10 Watts maximum Dimensions (H x W x D) 5.25 in. (13.3 cm) x 19 in. (48.3 cm) x 8 in. (20.3 cm) Weight 9.0 lbs. (4.08 kg) Finish Textured Blue Polyurethane Enamel Front Panel Alodine (Yellow Iridite) Chassis