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1.05 Hazardous
Environments
WARNING!
The standard scale is not “explosion-proof”. The standard scale must not be
operated in an environment where conditions exist that could cause an explosion of dust or gas.
Specially built explosion proof scales, signal conditioner enclosures, and speed sensors are
available from
Tecnetics
for hazardous environments.
1.06 Scale
Over-Loading
WARNING!
Excessive loading on the scale could result in damage to the scale, conveyor, or
cause injury to personnel. Information that applies to your specific application is available in
Section 12 of this manual. An increase in maximum rate and/or a reduction of belt speed could
result in overloading the scale. Additionally, increasing the idler center-to-center distance (refer
to Section 7.02.5), which increases the loading on the weigh idler, can also result in overloading
the scale.
1.07 Environment
The equipment is designed to be operated in wet or dry environments, within a temperature range
of 32-104 degrees Fahrenheit (0-40 degrees Celsius), and a relative humidity less than 80%.
Although the equipment will operate outside this temperature range, the accuracy of the
equipment might be affected. If the equipment is to be stored for an extended period of time,
keep it in a cool dry area and do not expose the shipping crate or pallet to the weather unless care
is taken to protect it from rain exposure.
1.08
Printed Circuit Board (PCB) Precautions
Disconnect and lock out all power to the scale before servicing. When handling PCBs, always
use a commercially available grounding wrist strap to prevent electrostatic discharge, which can
destroy electronic components. Store unused PCBs in electrostatic protection bags made for that
purpose.
1.09
Welding
Precautions
Do not
do electrical welding on or near the scale carriage, electrical enclosures, load cells or
LVDT’s, or signal wiring. Electrical current passing through the PCBs will destroy them, as can
electromagnetic radiation. If welding near the scale is absolutely necessary, place the ground
clamp as close to the welding area as possible.
Содержание Tecweigh 20
Страница 2: ... 1 ...
Страница 10: ... 9 2 09 I O Quick Reference Guide ...
Страница 20: ... 19 ...
Страница 24: ... 23 4 03 WY15 and WY25 Scale Wiring load cells ...
Страница 25: ... 24 4 04 HY15 and HY25 Field Wiring ...
Страница 26: ... 25 4 05 WY10 WY10HD and WY20 Scale Wiring LVDTs ...
Страница 27: ... 26 4 06 Chart Recorder Data Logger using the 4 20 ma output ...
Страница 28: ... 27 4 07 Chart Recorder Data Logger using the HFR output ...
Страница 29: ... 28 4 08 Remote Rate Total Display 4 09 Remote Tons Counter ...
Страница 30: ... 29 4 10 Radio Transceivers Local Scale Remote Processor ...
Страница 31: ... 30 4 11 Radio Transceivers Local Processor Remote PLC PC or Remote Display ...
Страница 32: ... 31 4 12 Radio Transceivers Local DC Generator Remote Processor ...
Страница 33: ... 32 4 13 Radio Transceivers Local DC Generator and Processor ...
Страница 34: ... 33 4 14 Multiple Processors to Tecweigh Multi Scale Display MSD ...
Страница 35: ... 34 4 15 Interposing Relay External 120 vac Power 4 16 Interposing Relay Internal 30 vdc Power ...
Страница 61: ... 60 SC300 PCB WY15 and WY25 SC400 PCB WY10 and WY20 ...
Страница 71: ... 70 10 01 WY10 Dimensions CHAPTER 10 DIMENSIONS ...
Страница 72: ... 71 10 02 WY10 HD Heavy Duty Dimensions ...
Страница 73: ... 72 10 03 WY15 Dimensions ...
Страница 74: ... 73 10 04 WY20 Dimensions ...
Страница 75: ... 74 10 05 WY25 Dimensions ...
Страница 76: ... 75 10 06 HY15 and 25 Dimensions ...