50514 EMIT, 50514 Datasheet - Page 4

• Manufacturer Part Number: 50514
• Description: FULL TIME CONTINUOUS MONITOR, LED
• Manufacturer: EMIT

Specifications of 50514

• Meter Display Type: LED
• External Height: 11.4cm
• External Width: 6.4cm
• External Depth: 3cm
• Weight: 192g
• Lead Free Status / RoHS Status: na

TB-6550 Page 4 of 4
Figure 4. Typical external relay circuit
WORK SURFACE CHANNEL
The Full Time Continuous Monitor monitoring circuitry is
sufficiently sensitive to detect extremely low current when
used with a worksurface with a conductive layer.
Note: The monitor will not detect insulative contamination
on the worksurface. Insulative contamination can
increase the resistance to ground making the worksurface
ineffective.” (ESD TR12-01 section 3.1 Worksurface
monitors). ESD worksurfaces should be kept clean using
an approved ESD cleaner like Reztore™ Antistatic Surface
& Mat Cleaner.
When the monitor is connected to an ESD worksurface,
the amount of current that flows is a function of the total
resistance between the Continuous Monitor and through
the worksurface to ground. When the resistance of the
worksurface is below a pre-set threshold, the monitor will
indicate Pass. Conversely, if the resistance level is high
when compared to the monitor’s reference, the unit will fail
and alarm. This is an integrating resistance measuring
circuit, therefore it is relatively insensitive to externally
induced electromagnetic fields. The resistance threshold
is factory set to 10 megohms. (It can be special ordered to
other limits. Contact manufacturer for specifications).
Specifications
RESISTANCE LIMITS
Test range of monitored circuit
Worksurface limit*
Power Source
Current Drain
Wrist strap open circuit voltage 1.2 volts peak to peak @
EMIT - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone] • Website: DescoEMIT.com
Set to 10 megohms
50514: 120 VAC
50519: 220 VAC
50-60 Hz
<15 mA RMS
1-2 MicroAmps
500K - 10M ohms†
Mat test open circuit voltage
Response time to alarm
Standby “parking” snap delay
Long Term Drift
Temperature
Field Adjustment
Size
† This cannot be verified with standard DC test equipment.
The continuous monitor is an impedance sensing device
and the limits are determined by the magnitude and angle
of the impedance.
* Contact factory for special limits.
Maintenance and Calibration
The Full Time Continuous Monitor is solid state and
designed to be maintenance free. The 50514 / 50519
is calibrated to standards traceable to NIST. There are
no user adjustments that can be made. Because of the
impedance sensing nature of the test circuit, special
equipment is required for calibration. We recommend that
calibration be performed annually, using the EMIT 50512
Continuous Monitor Calibration Unit. The Calibration Unit
is a most important product which allows the customer to
perform NIST traceable calibration on continuous monitors.
The 50512 is designed to be used on the shop floor at the
workstation, virtually eliminating downtime, verifying that the
continuous monitor is operating within tolerances.
Limited Warranty
EMIT expressly warrants that for a period of five (5) years from the
date of purchase EMIT Continuous Monitors will be free of defects in
material (parts) and workmanship (labor). Within the warranty period,
a credit for purchase of replacement EMIT Continuous Monitors, or, at
EMIT’s option, the Continuous Monitor will be repaired or replaced free
of charge. If product credit is issued, the amount will be calculated by
multiplying the unused portion of the expected five year life times the
original unit purchase price. Call our Customer Service Department at
909-664-9980 for a Return Material Authorization (RMA) and proper
shipping instructions and address. Please include a copy of your
original packing slip, invoice, or other proof of date of purchase. Any
unit under warranty should be shipped prepaid to the EMIT factory.
Warranty replacements will take approximately two weeks.
If your unit is out of warranty, call our Customer Service Department
at 909-664-9980 for a Return Material Authorization (RMA) and proper
shipping instructions and address. EMIT will quote repair charges
necessary to bring your unit up to factory standards.
Warranty Exclusions
THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU
OF ALL OTHER PRODUCT WARRANTIES, EXPRESSED AND
IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE WHICH ARE SPECIFICALLY DISCLAIMED.
The express warranty will not apply to defects or damage due to
accidents, neglect, misuse, alterations, operator error, or failure to
properly maintain, clean or repair products.
Limit of Liability
In no event will EMIT or any seller be responsible or liable for any
injury, loss or damage, direct or consequential, arising out of the use of
or the inability to use the product. Before using, users shall determine
the suitability of the product for their intended use, and users assume
all risk and liability whatsoever in connection therewith.
5 to 7.5 volts
<50 mS
6-8 seconds
1/2% per decade
(1st decade is 1 hr)
10-40 degrees C
None required
3/4" x 3-1/4" x 4-3/8"
© 2009 DESCO INDUSTRIES INC.
Employee Owned