SpectraScan International, Inc.

S M U - 1 5 0 0 S E R I E S
	RESISTIVE MULTIFUNCTION WRIST STRAP MONITOR

Click Here for Larger Image

DESCRIPTION

The SMU-1500/4A is designed for use with two conductor wriststraps, for continuous resistive monitoring. The SMU-1500/4A also features continuous monitoring of bench-tops and both earth ground and electrical ground. A second monitored wriststrap jack is also provided for guests. The alarm trip levels may be factory custom set and the alarm loudness is customer adjustable. The SMU-1500-4A is compatible with the ASC-300 Automated Static Control System.

SPECIFICATIONS

FUNCTIONS: Continuously monitors two dual conductor wrist straps for a safe resistance range. Continuously monitors the workstation surface resistance to ground, and continuously monitors the integrity of both the electrical ground and the earth ground.

WRIST STRAP MONITORING: The SMU-1500A and the SMU-1500-4A use the reliable loop resistance principle for continuous monitoring of two dual conductor wrist straps with two 1.0 Megohm series resistors. The unit will alarm for a series resitance of less than 0.5 Megohm and more than 20 Megohm. These trip-points may be factory set to smaller or larger values. The guest jack is continuously monitored.

WORKSTATION SURFACE MONITORING: The unit will alarm for workstation surface to ground resistances of 0 and more than 50 Megohm. These trip-points may be factory set to smaller or larger values.

GROUND QUALITY MONITORING: The unit will alarm if the loop resistance of the electrical ground and the earth ground exceeds 100 ohms. This trip-point may be factory set to smaller or larger values.

AUDIBLE ALARM LOUDNESS: Internally adjustable.

OUTPUTS: SMU-1500A: 5 volt logic signal for remote monitoring or data acquisition. SMU-1500-4A: 4 digital data lines through an RJ-11 connector, for use with the ASC-300 Automated Static Control System.

OPERATIONAL INDICATORS: Red and green LEDs and a piezoelectric beeper. Green LEDs: ON for "PASS" condition. Red EDs: ON until "FAIL" condition is corrected. Audible Alarm: ON for 3 seconds following a "FAIL" condition. All failure conditions must be corrected to re-set the audible alarm.

POWER REQUIREMENTS: A UL/CSA approved, grounded AC plug-in power adaptor rated at 120 VAC, 60 Hz, 10W is included. A "tabletop" adaptor for 230 VAC, 50 Hz is optionally available.

DIMENSIONS: 4 3/8" L x 3 1/4" W x 1 1/2" H (Approx.)

MOUNTING: Hook-and-loop self-adhesive strip.

TO ORDER: Model SMU-1500A or SMU-1500-4A for standard housing. Add suffix MC for metal case.

Patent Nos. 4,649,374 4,859,992 and 5,083,117

Return to the SpectraScan Products Page

"Possibly the best there is..."